2025

Ju, H., Oh, S., Kim, H. et al. High-pressure phases of van der Waals Weyl semimetal transition metal ditellurides. NPG Asia Mater 17, 20 (2025). [link]

Manh Hong Nguyen, Giung Park, Je-Geun Park, Hyeonsik Cheong "Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3" NPJ Quantum Materials 10, 65 (2025). [link]

Donghoon Moon, Wonsik Lee, Chaesung Lim, Jinwoo Kim, Jiwoo Kim, Yeonjoon Jung, Hyun-Young Choi, Won Seok Choi, Hangyel Kim, Ji-Hwan Baek, Changheon Kim, Jaewoong Joo, Hyun-Geun Oh, Hajung Jang, Kenji Watanabe, Takashi Taniguchi, Sukang Bae, Jangyup Son, Huije Ryu, Junyoung Kwon, Hyeonsik Cheong, Jeong Woo Han, Hyejin Jang, Gwan-Hyoung Lee "Hypotaxy of wafe-scale single-crystal transition metal dichalcogenides" Nature 638, 957-964 (2025). [link]

Y. Jung, D. Moon, J. Joo, J. Kim, S. Oh, H. Lee, J. Kim, H. Kim, H. Ryu, S. C. Hong, J.-H. Baek, N. Kim, H. Cheong, G.-H. Lee "WOx-driven growth of 2H- and 3R-WS2 multilayers by physical vapor deposition" Applied Surface Science 682, 161676 (2025). [link]


2024


C. Y. Ly, C. Vong, T. Sriv and H. Cheong "Raman spectroscopy of atomically thin HfX2 (X=S, Se)" 2D Mater. 11 045013 (2024). [link]

W. Na, P. Park, S. Oh, J. Kim, A. Scheie, D. A. Tennant, H. C. Lee, J-. G. Park, H. Cheong "Direct Observation and Analysis of Low-Energy Magnons with Raman Spectroscopy in Atomically Thin NiPS3" ACS Nano 18 (31), 20482-20492 (2024). [link]

M. H. Nguyen, S. Son, G. Park, W. Na, J-.G. Park and H. Cheong "Temperature dependent Raman study of antiferromagnetic CrPS4" J. Mater. Chem. C  Advance Article (2024). [link]

J. Park, Y. Je, J. Kim, J. M. Park, J-. E. Jung, H. Cheong, S. W. Lee & K. Kim "Unveiling the distinctive mechanical and thermal properties of γ-GeSe"  Nano Convergence 11, 29 (2024). [link]

Y. Lee, C. Kim, S. Son, J. Cui, G. Park, K-.X. Zhang, S. Oh, H. Cheong, A. Kleibert, J-. G. Park "Imaging Thermally Fluctuating Néel Vectors in van der Waals Antiferromagnet NiPS3" Nano Lett. 24 20, 6043–6050 (2024). [link]

H. Ryu, S. C. Hong, K. Kim, Y. Jung, Y. Lee, K. Lee, Y. Kim, H. Kim, K. Watanabe, T. Taniguchi, J. Kim, K. Kim, H. Cheong and G-. H. Lee "Optical grade transformation of monolayer transition metal dichalcogenides via encapsulation annealing" Nanoscale 16 5836-5844 (2024). [link]

S. Oh, H-. Kim, J. Kim, H. Jeong, H. J. Choi, H. Cheong "Modification of interlayer interaction in bilayer MoS2 due to monolayer WSe2 in heterostructures" 2D Mater. 11 025004 (2024). [link]


2023


J. Kim, W. Na, J. Kim, P. Park, K. Zhang, I. Hwang, Y.-W. Son, J. H. Kim, H. Cheong, J.-G. Park "Rapid Suppression of Quantum Many-Body Magnetic Exciton in Doped van der Waals Antiferromagnet (Ni,Cd)PS3" Nano Letters [link]

J.-H. Baek, H. G. Kim, S. Y. Lim, S. C. Hong, Y. Chang, H. Ryu, Y. Jung, H. Jang, J. Kim, Y. Zhang, K. Watanabe, T. Taniguchi, P. Y. Huang, H. Cheong, M. Kim, G.-H. Lee "Thermally induced atomic reconstruction into fully commensurate structures of transition metal dichalcogenide layers" Nat. Mater. (2023). [link]


Yoon, J.-Y., Lee, Y., Kim, D.-G., Oh, D. G., Kim, J. K., Guo, L., Kim, J., Choe, J., Lee, K., Cheong, H., Kim, C. U., Choi, Y. J., Ma, Y., Kim, K., "Type-II Red Phosphorus: Wavy Packing of Twisted Pentagonal Tubes" Angew. Chem. Int. Ed. 62, e202307102 (2023). [link]

S. Song, A. Yoon, S. Jang, J. Lynch, J. Yang, J. Han, M. Choe, Y. H. Jin, C. Y. Chen, Y. Cheon, J. Kwak, C. Jeong, H. Cheong, D. Jariwala, Z. Lee, S.-Y. Kwon "Fabrication of p-type 2D single-crystalline transistor arrays with Fermi-level-tuned van der Waals semimetal electrodes" Nat Commun 14, 4747 (2023). [link]


H. Kim, J. Kim, J. Park, G. Park, J.l Kim, J.-H. Baek, S. Ryu, H. Cheong, Y. Son, G. ‐H. Lee "In-plane Anisotropy of Graphene by Strong Interlayer Interaction with van der Waals Epitaxially-grown MoO3" Science Advances 9 (23), eadg6696 (2023). [link]


S. Y. Lim, H. Kim, Y. W. Choi, T. Taniguchi, K. Watanabe, H. J. Choi, and H. Cheong "Modulation of Phonons and Excitons Due to Moiré Potentials in Twisted Bilayer of WSe2/MoSe2" ACS Nano 17 (14), 13938-13947 (2023). [link]


D. H. Shin, H. Kim, S. H. Kim, H. Cheong, P. G. Steeneken, C. Joo, S. W. Lee "Graphene nono-electromechanical mass sensor with high resolution at room temperature" iScience 26, 105958 (2023). [link]


S. Park, S. Hong, J. Y. Lim, S. Yu, J. Kim, H. Cheong, S. Im "Measuring the Bandgap of Ambipolar 2D Semiconductors using Multilayer Graphene Contact" Small Science 3, 2200075 (2023). [link]


H. Ryu, Y. Lee, J. H. Jeong, Y. Lee, Y. Cheon, K. Watanabe, T. Taniguchi, K. Kim, H. Cheong, C.-H. Lee, G.-H. Lee "Laser-Induced Phase Transition and Patterning of hBN-Encapsulated Mo Te2" SMALL 19, 2205224 (2023). [link]


C.-H. Lee, H. Ryu, G. Nolan, Y. Zhang, Y. Lee, S. Oh, H. Cheong, K. Watanabe, T. Taniguchi, K. Kim, G.-H. Lee, P. Y. Huang "In Situ Imaging of an Anisotropic Layer-by-Layer Phase Transition in Few-Layer MoTe2" Nano Letters 23, 677 (2023). [link]



2022


Y. Lee, S. Son, C. Kim, S. Kang, J. Shen, M. Kenzelmann, B. Delley, T. Savchenko, S. Parchenko, W. Na, K.-Y. Choi, W. Kim, H. Cheong, P. M. Derlet, A. Kleibert, J.-G. Park "Giant Magnetic Anisotropy in the Atomically Thin van der Waals Antiferromagnet FePS3" Advanced Electronic Materials 9, 2200650 (2022). [link]


T. H. Tran, T. M. A. Nguyen, V. P. T. Dao, C. D. Sai, T. C. Bach, N. H. Pham, A. B. Ngac, V. T. Pham, T. K. C. Tran, H. Cheonge, V. T. Nguyen "Highly sensitive characteristic of surface enhanced Raman scattering for CuO/Au core/shell nanowires substrate" Ceramics International 48, 3199 (2022). [link]


H. J. Yang, M. Redington, D. P. Miller, E. Zurek, M. Kim, C.-S. Yoo, S. Y. Lim, H. Cheong, S.-A. Chae, D. Ahn, N. H. Hur "New monoclinic ruthenium dioxide with highly selective hydrogenation activity" Catalysis Science & Technology 12, 6556 (2022). [link]


A. Kim, S. Y. Lim, J. H. Park, J.-S. Chung, H. Cheong, C. Koc, J.-G. Yoon, S. M. Yang "Nanoscale mapping of temperature-dependent conduction in an epitaxial VO2 film grown on an Al2O3 substrate" RSC Advances 12, 23039 (2022). [link]


S. Oh, S. Y. Lim, D.-H. Son, J.-K. Kang, H. Yoo, D.-H. Kim, H. Cheong "Optical Detiction of SnSe2 Formation on CZTSSe Thin-film Solar Cells" ACS Appl. Energy Mater 5, 11774 (2022). [link]


J. M. Park, S. Lee, W. Na, K. Kim, H. Cheong "Precise Determination of Offset between Optical Axis and Re-Chain Direction in Rhenium Disulfide" ACS Nano 16, 9222 (2022). [link]


J. Kim, E. Ko, J. Jo, M. Kim, H. Yoo, Y.-W. Son, H. Cheong "Anomalous optical excitations from arrays of whirlpooled lattice distortions in moiré superlattices" Nature Materials 21, 890 (2022). [link]


S. Son, Y. Lee, J. H. Kim, B. H. Kim, C. Kim, W. Na, H. Ju, S. Park, A. Nag, K.-J. Zhou, Y.-W. Son, H. Kim, W.-S. Noh, J.-H. Park, J. S. Lee, H. Cheong, J. H. Kim, J.-G. Park "Multiferroic-Enabled Magnetic-Excitons in 2D Quantum-Entangled Van der Waals Antiferromagnet NiI2" Advanced Materials 34, 2109144 (2022). [link]


2021


Y. S. KIM, S. KANG, J.-P. SO, J. C. KIM, K. KIM, S. YANG, H. Y. JEONG, H.-G. PARK, G.-H. LEE, C.-H. LEE  "Atomic–layer–confined multiple quantum wells enabled by monolithic bandgap engineering of transition metal dichalcogenides" Science Advances 7, 7921 (2021). [link]


H. Ryu, Y. Lee, H.-J. Kim, S.-H. Kang, Y. Kang, K. Kim, J. Kim, B. E. Janicek, K. Watanabe, T. Taniguchi, P. Y. Huang, H. Cheong, I.-H. Jung, K. Kim, Y.-W. Son, G.-H. Lee  "Anomalous Dimensionality-Driven Phase Transition of MoTe2 in Van der Waals Heterostructure" Advanced Functional Materials 31, 2107376 (2021). [link]


F. Ullah, J.-H. Lee, Z. Tahir, A. Samad, C. T. Le, J. Kim, D. Kim, M. U. Rashid, S. Lee, K. Kim, H. Cheong, J. I. Jang, M.J. Seong, Y. S. Kim "Selective Growth and Robust Valley Polarization of Bilayer 3R-MoS2" ACS Applied Materials & Interfaces 13, 57588 (2021). [link]


S. Kim, Y. Kim, J. Kim, S. Choi, K. Yun, D. Kim, S. Y. Lim, S. Kim, S. H. Chun, J. Park, I. Eom, K. S. Kim, T.-Y. Koo, Y. Ou, F. Katmis, H. Wen, A. Dichiara, D. A. Walko, E. C. Landahl, H. Cheong, E. Sim, J. Moodera, H. Kim "Ultrafast Carrier–Lattice Interactions and Interlayer Modulations of Bi2Se3 by X-ray Free-Electron Laser Diffraction" Nano Letters 21, 8554 (2021). [link]


D. Kim, H. Ryu, S. Y. Lim, K. M. McCall, J. Park, S. Kim, T. J. Kim, J. Kim, Y. S. Kim, M. G. Kanatzidis, H. Cheong, J. I. Jang "On the Origin of Room-Temperature Amplified Spontaneous Emission in CsPbBr3 Single Crystals", Chemistry of Materials 33, 7185 (2021). [link]


M. H. Nguyen, S. Y. Lim, T. Taniguchi, K. Watanabe, H. Cheong "Interlayer interaction in 2H-MoTe2/hBN heterostructures", 2D Materials  8, 045004 (2021). [link]


S. Lee, J.-E. Jung, H.-G. Kim, Y. Lee, J. M. Park, J. Jang, S. Yoon, A. Ghosh, M. Kim, J. Kim, W. Na, J. Kim, H. J. Choi, H. Cheong, K. Kim "γ-GeSe: A New Hexagonal Polymorph from Group IV–VI Monochalcogenides" Nano Letters 21, 4305 (2021). [link]


M. Jang, H. Bae, Y. Lee, W. Na, B. Yu, S. Choi, H. Cheong, H. Lee, K. Kim "Unidirectional Alignment of AgCN Microwires on Distorted Transition Metal Dichalcogenide Crystals" ACS Applied Materials & Interfaces 13, 8727 (2021). [link]


S. Lee, S. Y. Lim, T. Kim, J. H. Lee, Y. Kim, H. Ahn, K. K. Hong, H. Cheong, H. Shin, D. H. Wang, J. H. Park "High-Valent Iodoplumbate-Rich Perovskite Precursor Solution via Solar Illumination for Reproducible Power Conversion Efficiency", Journal of Physical Chemistry Letters 12, 1676 (2021). [link]


Y. Cheon, S. Y. Lim, K. Kim, H. Cheong "Structural Phase Transition and Interlayer Coupling in Few-Layer 1T' and Td MoTe2" ACS Nano 15, 2962 (2021). [link]


S. Y. Lim, K. Kim, S. Lee, J.-G. Park, H. Cheong "Thickness dependence of antiferromagnetic phase transition in Heisenberg-type MnPS3" Current Applied Physics 21, 1 (2021). [link]




2020


Y. Sim, A. Yoon, H. S. Kang, J. Kwak, S.-Y. Kim, Y. Jo, D. Choe, W. Na, M. H. Lee, S.-D. Park, S. Song, D. Kim, J.-W. Yoo, S. Y. Kim, H. Cheong, J. S. Lee, C.-H. Lee, Z. Lee, S.-Y. Kwon "Design of 2D Layered Catalyst by Coherent Heteroepitaxial Conversion for Robust Hydrogen Generation" Advanced Functional Materials 31, 2005449 (2020). [link]


S. Kang, K. Kim, B. H. Kim, J. Kim, K. I. Sim, J.-U. Lee, S. Lee, K. Park, S. Yun, T. Kim, A. Nag, A. Walters, M. Garcia-Fernandez, J. Li, L. Chapon, K.-J. Zhou, Y.-W. Son, J. H. Kim, H. Cheong, J.-G. Park "Coherent many-body exciton in van der Waals antiferromagnet NiPS3" Nature 583, 785 (2020). [link]


S. G. Jeong, S. Y. Lim, J. Kim, S. Park, H. Cheong, W. S. Choi "Spin-phonon coupling in epitaxial SrRuO3 heterostructures" Nanoscale 12, 13926 (2020). [link]


B. K. Choi, S. Ulstrup, S. M. Gunasekera, J. Kim, S. Y. Lim, L. Moreschini, J. S. Oh, S.-H. Chun, C. Jozwiak, A. Bostwick, E. Rotenberg, H. Cheong, I.-W. Lyo, M. Mucha-Kruczynski, Y. J. Chang "Visualizing Orbital Content of Electronic Bands in Anisotropic 2D Semiconducting ReSe2", ACS Nano 14, 7880 (2020). [link]


T. Sriv, T. M. H. Nguyen, Y. Lee, S. Y. Lim, V. Q. Nguyen, K. Kim, S. Cho, H. Cheong "Optical phonons of SnSe(1-x)Sx layered semiconductor alloys", Scientific Reports 10, 11761 (2020). [link]


J.-A Oh, Y. J. Song, S. Y. Lim, T. Sriv, H. Cheong, C.-W. Jeona "Implementation of Na diffusion layer at Cu2ZnSnSe4/Mo interface for flexible thin film solar cell fabricated on Ti foil by solid state selenization", Current Applied Physics 20, 967 (2020). [link]


J. Kim, J.-U. Lee, H. Cheong "Polarized Raman spectroscopy for studying two-dimensional materials", Journal of Physics:Condensed Matter 32, 343001 (2020). [link]


T. Uhm, J. Na, J.-U. Lee, H. Cheong, S. W. Lee, E. E. B. Campbell, S. H. Jhang "Structural configurations and Raman spectra of carbon nanoscrolls", Nanotechnology 31, 315707 (2020). [link]


C. T. Le, J. Kim, F. Ullah, A. D. Nguyen, T. N. Nguyen Tran, T.-E. Le, K.-H. Chung, H. Cheong, J. I. Jang, Y. S. Kim "Effects of Interlayer Coupling and Band Offset on Second Harmonic Generation in Vertical MoS2/MoS2(1–x)Se2x Structures", ACS Nano 14,  4366 (2020). [link]


T. H. Tran, M. H. Nguyen, T. H. T. Nguyen, V. P. T. Dao, Q. H. Nguyen, C. D. Sai, N. H. Pham, T. C. Bach, A. B. Ngac, T. T. Nguyen, K. H. Ho, H. Cheong, V. T. Nguyen "Facile fabrication of sensitive surface enhanced Raman scattering substrate based on CuO/Ag core/shell nanowires", Applied Surface Science 509,  145325 (2020). [link]


Y. Zhang, S. Seo, S. Y. Lim, Y. Kim, S.-G. Kim, D.-K. Lee, S.-H. Lee, H. Shin, H. Cheong, N.-G. Park "Achieving Reproducible and High-Efficiency (>21%) Perovskite Solar Cells with a Presynthesized FAPbI3 Powder", ACS Energy Letters 2,  360 (2020). [link]


S. Song, Y. Sim, S.-Y. Kim, J. H. Kim, I. Oh, W. Na, D. H. Lee, J. Wang, S. Yan, Y. Liu, J. Kwak, J.-H. Chen, H. Cheong, J.-W. Yoo, Z. Lee & S.-Y. Kwon  "Wafer-scale production of patterned transition metal ditelluride layers for two-dimensional metal–semiconductor contacts at the Schottky–Mott limit", Nature Electronics  3, 207 (2020). [link]


S. Y. Lim, J.-U. Lee, J. H. Kim, L. Liang, X. Kong, T. T. H. Nguyen, Z. Lee, S. Cho, H. Cheong "Polytypism in Few-Layer Gallium Selenide", Nanoscale  12,  8563 (2020). [link]


S.-H. Do, C. H. Lee, T. Kihara, Y. S. Choi, S. Yoon, K. Kim, H. Cheong, W.-T. Chen, F. Chou, H. Nojin, K.-Y. Choi "Randomly Hopping Majorana Fermions in the Diluted Kitaev System α-Ru0.8Ir0.2Cl3", Physical Review Letters  124,  047204 (2020). [link]



2019


Y. Lee, J. Koo, S. Lee, J.-Y. Yoon, K. Kim, M. Jang, J. Jang, J. Choe, B.-W. Li, C. T. Le, F. Ullah, Y. S. Kim, J. Y. Hwang, W. C. Lee, R. S. Ruoff, H. Cheong, J. Cheon, H. Lee, K. Kim "Universal Oriented van der Waals Epitaxy of 1D Cyanide Chains on Hexagonal 2D Crystals", Advanced Science  7,  1900757(2019). [link]


Y. Choi, K. Kim, S. Y. Lim, J. Kim, J. M. Park, J. H. Kim, Z. Lee, H. Cheong "Complete determination of the crystallographic orientation of ReX2 (X = S, Se) by polarized Raman spectroscopy", Nanoscale Horizons  5, 308 (2019). [link]


J. Y. Lee, S. Kang, D. Lee, S. Choi, S. Yang, K. Kim, Y. S. Kim, K. C. Kwon, S. H. Choi, S. M. Kim, J. Kim, J. Park, H. Park, W. Huh, H. S. Kang, S. W. Lee, H.-G. Park, M. J. Ko, H. Cheong, S. Han, H. W. Jang, C.-H. Lee "Boosting the photocatalytic hydrogen evolution performance via an atomically thin 2D heterojunction visualized by scanning photoelectrochemical microscopy", Nano Energy  65, 104053 (2019). [link]


D.-H. Son, Y.-I. Kim, S.-H. Kim, D. Nam, H. Cheong, J.-K. Kang, K-J. Yang, D.-H. Kim "Effects of S and Se contents on the physical and photovoltaic properties of Cu2ZnSn(SX, Se1−X)4 thin films: achieving a PCE of 9.47%", Journal of Materials Chemistry A  7, 22986 (2019). [link]


S. Yu, Y. Cho, J. Y. Lim, H. Kwon, Y. Jeong, J. Kim, H. Cheong, S. Im "Advanced Multifunctional Field Effect Devices Using Common Gate for Both 2D Transition‐Metal Dichalcogenide and InGaZnO Channels", Advanced Electronic Materials 5,  1900730(2019). [link]

K. Kim, J.-U. Lee, H. Cheong "Raman spectroscopy of two-dimensional magnetic van der Waals materials", Nanotechnology  30, 452001 (2019). [link]

K. Kim, S. Y. Lim, J. Kim, J.-U. Lee, S. Lee, P. Kim, K. Park, S. Son, C.-H. Park, J.-G. Park, H. Cheong "Antiferromagnetic ordering in van derWaals 2D magnetic material MnPS3 probed by Raman spectroscopy", 2D Materials  6, 041001 (2019). [link]

D.-N. Jeong, D.-K. Lee, S. Seo, S. Y. Lim, Y. Zhang, H. Shin, H. Cheong, N.-G. Park "Perovskite Cluster-Containing Solution for Scalable d-Bar Coating toward High-Throughput Perovskite Solar Celle", ACS Energy Letters  4, 1189 (2019). [link]

K. Kim, S. Y. Lim, J.-U. Lee, S. Lee, T. Y. Kim, K. Park, G. S. Jeon, C.-H. Park, J.-G. Park,  H. Cheong "Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3", Nature Communications  10, 345 (2019). [link]

W. Na, K. Kim, J.-U. Lee, H. Cheong "Davydov splitting and polytypism in few-layer MoS2", 2D Materials  6, 015004 (2019). [link]



2018


W.-H. Park, M. Kim, J. Choo, H. Cheong, "Experimental investigation of surface morphology of a chemical vapor deposition-grown graphene monolayer mediating with a gap-plasmonic system and the related ripple shape study", Journal of Applied Physics   124, 223101 (2018). [link]

W. Choi, I. Akhtar, M. A. Rehman, M. Kim, D. Kang, J. Jung, Y. Myung, J. Kim, H. Cheong, Y. Seo "Twist-Angle-Dependent Optoelectronics in a Few-Layer Transition-Metal Dichalcogenide Heterostructure", ACS Applied Materials & Interfaces   11, 2470 (2018). [link]

S. Song, S.-Y. Kim, J. Kwak, Y. Jo, J. H. Kim, J. H. Lee, J.-U. Lee, J. U. Kim, H. D. Yun, Y. Sim, J. Wang, D. H. Lee, S.-H. Seok, T.-i. Kim, H. Cheong, Z. Lee, S.-Y. Kwon "Electrically Robust Single-Crystalline WTe2 Nanobelts for Nanoscale Electrical Interconnects", Advanced Science   6, 1801370 (2018). [link]

J. Kwak, Y. Jo, S. Song, J. H.  Kim, S.-Y. Kim, J.-U. Lee, S. Lee, J. Park, K. Kim, G.-D. Lee, J.-W. yoo, S. Y. Kim, Y.-M. Kong,G.-H Lee, W.-G. Lee, J. Park, X. Xu, H. Cheong, E.Yoon, Z. Lee, S.-Y. Kwon "Single-Crystalline Nanobelts Composed of Transition Metal Ditellurides", Advanced Materials  30, 1707260 (2018). [link]

M. G. Gang, S. W. Shin, M. P. Suryawanshi, U. V. Ghorpade, Z. Song, J. S. Jang, J. H. Yun, H. Cheong, Y. Yan, J. H. Kim "Band Tail Engineering in Kesterite Cu2ZnSn(S,Se)4 Thin-Film Solar Cells with 11.8% Efficiency", The Journal of Physical Chemistry Letters  9, 4555 (2018). [link]

Y. Kwon, K. Kim, W. Kim, S. Ryu, H. Cheong  "Variation of Photoluminescence spectral line shape of monolayer WS2", Current Applied Physics  18, 941 (2018). [link]

T. Sriv, K. Kim, H. Cheong "Low-Frequency Raman Spectroscopy of Few-Layer 2H-SnS2", Scientific Reports 8, 10194 (2018). [link]

J.-U. Lee,  H. Cheong "Resonance Raman effects in transition metal dichalcogenides", Journal of Raman Spectroscopy 49, 66 (2018). [link]

D. G. Moon, S. Rehan, S. Y. Lim, D. Nam, I. Seo, J. Gwak,  H. Cheong, Y. s. Cho, Y. Lee, S. Ahn "Structural, optical and electrical impacts of marcasite in pyrite thin films", Solar Energy 159, 930 (2018). [link]





2017


S. Lee, K. Kim, K. P. Dhakal, H. Kim, W. S. Yun, J. Lee,  H. Cheong,  J.-H. Ahn "Thickness-Dependent Phonon Renormalization and Enhanced Raman Scattering in Ultrathin silicon Nanomembranes", Nano Letters 17, 7744 (2017). [link]

J.-U. Lee, S. Woo, J. Park, H. C. Park, Y.-W. Son, H. Cheong "Strain-shear coupling in bilayer MoS2", Nature Communications 8, 1370 (2017). [link]

D.-H. Jeon, D.-K. Hwang, J.-K. Kang, D. Nam, H. Cheong "Control of Zn Content and Influence on Cu2ZnSnSe4 Thin-Film Solar Cells Fabricated by Coevaporation", Journal Of Nanoscience and Nanotechnology 17, 8236 (2017). [link]

C. Chen, L. Wang, L. Gao, D. Nam, D. Li, K. Li, Y. Zhao, C. Ge, H. Cheong, H. Liu, H. Song, J. Tang "6.5% Certified Sb2Se3 Solar Cells Using PbS Colloidal Quantum Dot Film as Hole Transporting Layer", ACS Energy Letters 2, 2125 (2017). [link]

S. Kim, K. Kim, J.-U. Lee, H. Cheong "Excitonic resonance effects and Davydov splitting in circularly polarized Raman spectra of few-layer WSe2", 2D Materials 4, 045002 (2017). [link]

J. Yang, J.-U. Lee, H. Cheong "Excitation energy dependence of Raman spectra of few-layer WS2", FlatChem 3, 64 (2017). [link]

P. K. Nayak, Y. Horbatenko, S. Ahn, G. Kim, J.-U. Lee, K. Y. Ma, A-R. Jang, H, Lim, D. Kim, S. Ryu,  H. Cheong, N. Park, H. S. Shin "Probing Evolution of Twist-Angle-Dependent Interlayer Excitons in MoSe2/WSe2 van der Waals Heterostructures", ACS Nano 11, 4041 (2017). [link]

K.-J. Yang, J.-H. Sim, D.-H. Son, Y.-I. Kim, D.-H. Kim, D. Nam, H. Cheong, S. Kim, J. Kim, J.-K. Kang"Precursor designs for Cu 2 ZnSn (S, Se) 4 thin-film solar cells", Nano Energy 35, 52 (2017). [link]

D.-K. Hwang, B.-S. Ko, D.-H. Jeon, J.-K. Kang, S.-J. Sung, K.-J. Yang, D. Nam, S. Cho, H. Cheong, D.-H. Kim "Single-step sulfo-selenization method for achieving low open circuit voltage deficit with band gap front-graded Cu2ZnSn(S,Se)4 thin films", Solar Energy Materials & Solar Cells 161, 162 (2017). [link]

K.-J. Yang, J.-H. Sim, D.-H. Son, S.-J. Sung, D.-H. Jeon, D.-K. Hwang, D. Nam, H. Cheong, S.Y. Kim, J.H. Kim, D.-H. Kim, J.-K. Kang "Comparison of chalcopyrite and kesterite thin-film solar cells", Journal of Industrial and Engineering Chemistry 45, 78 (2017). [link]

S.-Y. Kim, J. Kwak, J. H. Kim, J.-U. Lee, Y. Jo, S. Y. Kim, H. Cheong, Z. Lee, S.-Y. Kwon "Substantial improvements of long-term stability in encapsulation-free WS2 using highly interacting graphene substrate", 2D Materials 4, 011007 (2017). [link]

J. Li, S.Y. Kim, D. Nam, X. Liu, J.H. Kim, H. Cheong, W. Liu, H. Li, Y. Sun, Y. Zhang "Tailoring the defects and carrier density for beyond 10% efficient CZTSe thin film solar cells", Solar Energy Materials & Solar Cells 159, 447 (2017). [link]

 


2016


J.-U. Lee, S. Lee, J. H. Ryoo, S. Kang, T. Y. Kim, P. Kim, C.-H. Park, J.-G. Park, H. Cheong, "Ising-Type Magnetic Ordering in Atomically Thin FePS3", Nano Letters 16, 7433 (2016). [link]

D. K. Singh, S. Cha, D. Nam, H. Cheong, S.-W. Joo, D. Kim "Raman spectroscopic Study in Alkyl Chain Conformation in 1-Butyl-3-methylimidazolium Ionic Liquids and their Aqueous Mixtures", Chem. Phys. Chem. 17, 3040 (2016). [link]

D. Kim, H. Du, T. Kim, S. Shin, S. Kim, M. Song, C.W. Lee, J.-U. Lee, H. Cheong, D. H. Seo, S. Seo "The enhanced low resistance contacts and boosted mobility in two-dimensional p-type WSe2 transistors through Ar+ ion-beam generated surface defects", AIP Advances 6, 105307 (2016). [link]

K. Kim, J.-U. Lee, D. Nam, H. Cheong, "Davydov Splitting and excitonic Resonance Effects in Raman Sepctra of Few-Layer MoSe2", ACS Nano 10, 8113 (2016). [link]

M. Kim, S. Han, J.-H. Kim, J.-U. Lee, Z. Lee, H. Cheong, "Determination of the thickness and orientation of few-layer tungsten ditelluride using polarized Raman spectroscopy", 2D Materials 3, 034004 (2016). [link]

K.-J. Yang, D.-H. Son, S.-J. Sung, J.-H. sim, Y.-I. Kim, S.-N. Park, D.-H. Jeon, J.S. Kim, D.-K. Hwang, C.-W. Jeon, D. Nam, H. Cheong, J.-K. Kang, D.-H. Kim "A band-gap-graded CXTSSe solar cell with 12.3% efficiency", Journal of Materials Chemistry A 4, 10151 (2016). [link]

N. K. Youn, G. L. Agawane, D. Nam, J. Gwak, S. W. Shin, J. H. Kim, J. H. Yun, S. J. Ahn, A. Cho, Y. J. Eo, S. K. Ahn, H. Cheong, D. W. Kim, K.-S. Shin, K. H. Yoon "Cu2ZnSnS4 solar cells with a single spin-coated absorber layer prepared via a simple sol-gel route", International Journal of Energy Research 40, 662 (2016). [link]

D. Nam, S. Cho, J.-H. Sim, K.-J. Yang, D.-H. Son, D.-H. Kim, J.-K. Kang, M.-S. Kwon, C.-W. Jeon,  H. Cheong "Solar conversion efficiency and distribution of ZnS secondary phase in Cu2ZnSnS4 solar cells", Solar Energy Materials & Solar Cells 149, 226 (2016). [link]

W.-H. Park, I. Jo, B. H. Hong, H. Cheong "Controlling the ripple density and heights: a new way to improve the electrical performance of CVD-grown graphene", Nanoscale 8, 9822 (2016). [link]

Y. Cho, S. Jegal, J.-U. Lee, D. Yoon, S.-M. Choi, Y.-W. Son, H. Cheong "Anisotropic phonon softening of uniaxially strained bilayer graphene", Carbon 103, 473 (2016). [link]

J.-U. Lee, K. Kim, S. H. Han, G. H. Ryu, Z. Lee, H. Cheong "Raman Signatures of Polytypism in Molybdenum Disulfide", ACS NANO 10, 1948 (2016). [link]

W.-H.. Park, H. Cheong "Exploring the SERS background using a sandwiched graphene monolayer with gap-plasmon junctions", Journal of Physics D: Applied Physics 49, 105302 (2016). [link]

M.-S. Kwon, D. Nam, H. Cheong, C.-W. Jeon "Effect of Cu/(Zn+Sn) ratio on the ZnSe position and performance of CZTSe solar cells", Journal of Alloys and Compounds 665, 304 (2016). [link]

H.-T. Kim, M. Kim, A. Sohn, T. Slusar, G. Seo, H. Cheong, D.-W. Kim "Photoheat-induced Schottky nanojunction and indirect Mott transition in VO2: photocurrent analysis", Journal of Physics: Condenced Matter  28, 085602 (2016). [link]

M. Kim, S.-M. Choi, H. A. Yoon, S. K. Choi, J.-U. Lee, J. Kim, S. W. Lee, Y. -W. Son, H. Cheong "Photocurrent generation at ABA/ABC lateral junction in tri-layer graphene photodetector", Carbon 96, 454 (2016). [link]



2015 


K.-J. Yang, J.-H. Sim, D.-H. Son, D.-H. Kim, G.-Y. Kim, W. Jo, S. Song, J.H. Kim, D. Nam, H. Cheong, J.-K. Kang "Effects of the compositional ratio distribution with sulfurization temperatures in the absorber layer on the defect and surface electrical characteristics of Cu2ZnSnS4 solar cells", Progress in Photovoltaics: Research and Applications  23, 1771 (2015). [link]

O.Dobrozhan, A. Opanasyuk, M. Kolesnyk, M. Demydenko, H. Cheong, "Substructural investigations, Raman, and FTIR spectroscopies of nanocrystalline ZnO films deposited by pulsed sprayn pyrolysis", Shysica Status Solidi A-Applications and Materials Science 212, 2915 (2015). [link]

P. V. Tuong, Y .J. Yoo, J. W. Park, Y. J. Kim, K. W. Kim, H. Cheong, L.Y. Chen, Y.O. Lee "Multi-plasmon-induced perfect absorption at the third resonance in metamaterials", Journal of Optics 17, 125101 (2015). [link]

D. Nam, J.-U. Lee, H. Cheong, "Excitation energy dependent raman spectrum of MoSe2", Scientific Reports 5, 17113 (2015). [link]

B. S. Tung, B. X. Khuyen, N. V. Dung, V. D. Lam, Y. H. Kim, H. Cheong, Y. Lee "Multi-band near-perfect absorption via the resonance excitation of dark meta-molecules", Optics Communications 356, 362 (2015). [link]

S. Hwang, D.-H. Kim, D.-H. Son, K.-J. Yang, D. Nam, H. Cheong, J.-K. Kang, S.-I. In "Effects of a pre-annealing treatment(PAT) in Cu2ZnSn(S,Se)4 thin films prepared by rapid thermal processing(RTP) selenization", Solar Energy Materials & Solar Cells 143, 218 (2015). [link]

J. Kim, J.-U. Lee, J. Lee, H. J. Park, Z. Lee, C. Lee, H. Cheong "Anomalous polarization dependence of Raman scattering and crystallographic orientation of black phosphorus", Nanoscale 7, 18708 (2015). [link]

J.-U. Lee, K. Kim, H. Cheong "Resonant Raman and photoluminescence spectra of suspended molybdenum disulfide", 2D Materials 2, 044003 (2015). [link]

H.-C. Kim, H. Kim, J.-U. Lee, H.-B. Lee, D.-H. Choi, J.-H. Lee, W. H. Lee, S. H. Jhang, B. H. Park, H. Cheong, S.-W. Lee, H.-J. Chung "Engineering Optical and Electronic Properties of WS2 by Varying the Number of Layers", ACS Nano 9, 6854 (2015). [link]

D.H. Son, D.-H. Kim, S.-N. Park, K.-J. Yang, D. Nam, H. Cheong,J.-K. Kang "Growth and Device Characteristics of CZTSSe Thin-Film Solar Cells with 8.03% Efficiency", Chemistry of Materials 27, 5180 (2015). [link]

D.H. Jung, C. Kang, D. Yoon,  H. Cheong, J.S. Lee, M.-H. Bae, Y. D. Park "Anisotropic behavior of hydrogen in the formation of pentagonal graphene domains", Carbon  89, 242 (2015). [link]

M.M. Ivashchenko, I.P. Buryk, A.S. Opanasyuk, D. Nam, H. Cheong, Ja. G. Vaziev, V.V. Bibyk "Influence of deposition conditions on morphological, structural, optical and electro-physical properities of ZnSe films obtained by colse-spaced vacuum sublimation", Materials Science in Semiconductor Processing 36, 13 (2015). [link]

Y. D. Kim, H. Kim, Y. Cho, J. H. Ryoo, C.-H. Park, P. Kim, Y. S. Kim, S. Lee, Y. Li, S.-N. Park, Y. S. Yoo, D. Yoon, V. E. Dorgan, E. Pop, T. F. Heinz, J. Hone, S.-H. Chun, H. Cheong, S. W. Lee, M.-H. Bae, Y. D. Park "Bright visible light emission from graphene", Nature Nanotechnology 10, 676  (2015). [link]

J. Li, Y. Zhang, W. Zhao, D. Nam, H. Cheong, L. Wu, Z. Zhou, Y. Sun "A Temporary Barrier Effect of the Alloy Layer During Selenization: Tailoring the Thickness of MoSe2 for Efficient Cu2ZnSnSe4 Solar Cells", Advanced Energy Materials 5, 1402178 (2015). [link]

O. Dobrozhan, D. Kurbatov, A. Opanasyuk,  H. Cheong, A. Cabot "Influence of substrate temperature on teh structural and optical properties of crystalline ZnO films obtained by pulsed spray pyrolysis", Surface and Interface Analysis 47, 601 (2015). [link]

G. Kim, H.J. Jin, W. Jo, D. Nam,  H. Cheong, H.S. Kim, S.S. Oh, R.K. Ko, Y.S. Jo, D.W. Ha "Ultra-large current transport in thick SmBa2Cu3O7-x films grown by reactive co-evaporation", Physica C:Superconductivity and its Applications 513, 29 (2015). [link]

J.-U. Lee, J. Park, Y.-W. Son,  H. Cheong "Anomalous excitonic resonance Raman effects in few-layered MoS2", Nanoscale 7, 3229 (2015). [link]

Y.  J. Yoo, Y. J. Kim, J.  s. Hwang, J. Y. Rhee, K. W. Kim, Y. H. Kim,  H. Cheong, L. Y. Chen, Y. P. Lee "Triple-band perfect metamaterial absorption, based on single cut-wire bar", Applied Physics Letters  106, 071105 (2015). [link]

V. T. Nguyen, D. Nam, M. Gansukh, S.-N. Park, S.-J. Sung, D.-H. Kim, J.-K. Kang, C. D. Sai, T. H. Tran, H. Cheong, "Influence of sulfate residue on Cu2ZnSnS4 thin films prepared by direct solution method", Solar Energy Materials and Solar Cells  136, 113 (2015). [link]

R. Khazaeinezhad, S. H. Kassani, T. Nazari, H. Jeong, J. Kim, K. Choi, J.-U. Lee, J. H. Kim, H. Cheong, D.-I. Yeom, K. Oh "Saturable optical absorption in MoS2 nano-sheet optically deposited in the optical fiber facet", Optics Communications  335, 224 (2015). [link]



2014


D. Nam, J. Kim, J.-U. Kim, A. Nagaoka, K. Yoshino, W. Cha, H. Kim, I. C. Hwang, K. B. Yoon,  H. Cheong "Polarized Raman Spectroscopy of Cu-poor and Zn-rich single-crystal Cu2ZnSnSe4", Applied Physics Letters  105, 173903 (2014). [link]

Y. J. Yoo, H. Y. Zheng, Y. J. Kim, J. Y. Rhee, J.-H. Kang, K. W. Kim, H. Cheong, Y. H. Kim, Y. P. Lee "Flexible and elastic metamaterial absorber for low frequency, based on small-size unit cell", Applied Physics Letters  105, 041902 (2014). [link]

S. M. Yoon, J.-S. Kim, D. Yoon, H. Cheong, Y. Kim, H. H. Lee "Effects of polycrystallinity in nano patterning by ion-beam sputtering", Journal of Applied Physics  116, 024307 (2014). [link]

A. S. Opanasyuk, P. V. Koval, D. Nam, H. Cheong, A. R. Jeong, W. Jo, A. G. Ponomarev "The structure, phase and chemical composition of CZTSe thin films", Functional Materials  21, 164 (2014). [link]

I.-S. Byun, W. Kim, D. W. Boukhvalov, I. Hwang, J. W. Son, G. Oh, J. S. Choi, D. Yoon, H. Cheong, J. Baik, H.-J. Shin, H. W. Shiu, C.-H. Chen, Y.-W. Son, B. H. Park "Electrical control of nanoscale functionalization in graphene by the scanning probe technique", NPG Asia Materials  6, e102 (2014). [link]

M. Gwon, Y. Lee, J. W. Wu, D. Nam, H. Cheong, D.-W. Kim "Polarization-independent light emission enhancement of ZnO/Ag nanogrationg via surface plasmon polariton excitation and cavity resonance", ACS Applied Materials & Interfaces  6, 8602 (2014). [link]

D.Nam, H. Cheong, A. S. Opanasyuk, P. V. Koval, V. V. Kosyak, P. M. Fochuk "Raman investigation in thin and thick CdTe films obtained by close spaced vacuum sublimation thchnique", Physica Status Solidi C  1, (2014). [link]

D. Nam, A. S. Opanasyuk, P. V.  Koval, A. G. Ponomarev, A. R. Jeong, G. Y. kim, W. Jo, H. Cheong, "Composition variations in Cu2ZnSe4 thin film analyzed by X-ray diffraction, energy dispersive X-ray spectroscopy, particle induced X-ray emission, photoluminescence, and Ramin spectroscopy", Thin solid films  562, 109 (2014). [link]

H. Lim, S.-E. Choi, H. Cheong, J. S. Lee "Energy trasfer in dye molecule-containing zeolite monolayers", Microporous and Mesoporous Materials  192, 89 (2014). [link]

D.-H. Son, D.-H. Kim, K.-J. Yang, D. Nam, M. Gansukh, H. Cheong, J.-K. Kang "Influence of precursor sulfur content on film formation and the properties of sulfurized Cu2ZnSnS4 thin films for solar cells", Physica Status Solidi A  211, 946 (2014). [link]

T. A. Nguyen, J.-U. Lee, D. Yoon, H. Cheong, "Excitation Energy Dependent Raman Signatures of ABA- and ABC-stacked Few-layer Graphene", Scientific Reports  4, 4630 (2014). [link]

G.-J. Lee, N. G. Deshpande, Y. P. Lee, H. Cheong, N. Swami, J. S. Bhat, "Optical and Structural Properties of AI-ZnO Nanocomposites", Jouranl of Nanoscience and Nanotechnology  14, 3661 (2014). [link]

J.-U. Lee, N. M. Seck, D. Yoon, S.-M. Choi, Y.-W. Son, H. Cheong, "Polarization dependence of double resonant Raman scattering band in bilayer graphene", Carbon  72, 257 (2014). [link]

S.-N. Park, S.-J. Sung, D.-H. Son, D.-H. Kim, M. Gansukh, H. Cheong, J.-K. Kang, "Solution-processed Cu2ZnSnS4absorbers prepared by appropriate inclusion and removal of thiourea for thin film solar cells", RSC Adv. 4, 9118 (2014). [link]

D. H. Jung, C. Kang, M. kim, H. Cheong, H. Lee, J. S. Lee, "Effects of Hydrogen Partial Pressure in the Annealing Process on Graphene Growth", J. Phys. Chem. C 118, 3574 (2014). [link]

K. H. Lee, B. Lee, S.-J. Hwang, J.-U. Lee, H. Cheong, O.-S. Kwon, K. Shin, N.-H. Hur, "Large scale production of highly conductive reduced graphene oxide sheets by a solvent-free low temperature reduction", Carbon 69, 327 (2014). [link]

H. Kim, U. S. Jung, S. I. Kim, D. Yoon, H. Cheong, C. W. Lee, S. Woo Lee, "Young's modulus of ZnO microwires determined by various mechanical measurement methods", Current Applied Physics 14, 166 (2014). [link]



2013


Y. J. Yoo, Y. J. Kim, P. V. Tuong, J. Y. Rhee, K. W. Kim, W. H. Jang, Y. H. Kim, H. Cheong, Y. P. Lee, "Polarization-indepenednt dual-band perfect absorber utilizing multiple magnetic resonances", Optics Express  21, 32484 (2013). [link]

Y. Cho, D.-W. Kim, S. Ahn, D. Nam, H. Cheong, G. Y. Jeong, J. G., J. H. Yun, "Recombination in Cu(In,Ga)Se2 thin-film solar cells containing ordered vacancy compound phases", Thin Solid Films  546, 358 (2013). [link]

M. Kim, D. Yoon, S. K. Choi, H. Cheong, H. A. Yoon, S. W. Lee, "Polarization dependence of the photocurrent due to an anisotropic electron-photon interaction in Pd-graphene-Pd devices", J. Korean Phys. Soc. 63, 1019 (2013). [link]

J.-S. Kim, J. S. Choi, M. J. Lee, B. H. Park, D. Bukhvalov, Y.-W. Son, D. Yoon, H. Cheong, J.-N. Yun, Y. Jung, J. Y. Park, N. Salmeron, “Between Scylla and Charybdis: Hydrophobic graphene-guided water diffusion on hydrophilic substrate,” Scientific Reports 3, 2309 (2013). [link]

D. Yoon, D. Jeong, H.-J. Lee, R. Saito, Y.-W. Son, H. C. Lee, H. Cheong, “Fano resonance in Raman scattering of graphene,” Carbon 61, 373 (2013). [link]

P. V. Tuong, J. W. Park, J. Y. Rhee, K. W. Kim, H. Cheong, W. H. Jang, Y. P. Lee "Symmetric metamaterials based on flower-shaped structure," Mater. Chem. Phys. 141, 535 (2013). [link]

S. Jung, J. Gwak, J. H. Yun, S. Ahn, D. Nam, H. Cheong, S. Ahn, A. Cho, K. Shin, K. Yoon "Cu2ZnSnSe4 thin film solar cells based on a single-step co-evaporation process," Thin Solid Films 535, 52 (2013). [link]

A.R. Jeong, W. Jo, D.Y. Park, H. Cheong, Y.K. Seo, J.H. Park, J.S. Chung, Y.S. Lee, Y.-J. Kwark "Effects of substrates on structural and optical properties of Cu-poor CuGaSe2 thin films prepared by in-situ co-evaporation," Curr. Appl. Phys. 13, 907 (2013). [link]

D. Nam, S. Jung, S. Ahn, J. Gwak, K. Yoon, J. H. Yun, H. Cheong "Influence of growth process on optical properties of Cu(In1-x Gax)Se2 thin film solar cells," Thin Solid Films 535, 118 (2013). [link]

S. Jegal, Y. Hao, D. Yoon, R. S. Ruoff, H. Yun, S. W. Lee, H. Cheong "Crystallographic orientation of early domains in CVD graphene studied by Raman spectroscopy," Chem. Phys. Lett. 568, 146 (2013). [link]

J. Park, E. D. Grayfer, Y. Jung, K. Kim, K.-K Wang, Y.-R. Kim, D. Yoon, H. Cheong, H.-E. Chung, S.-J. Choi, J.-H. Choy, S.-J. Kim "Photoluminescent nanographitic/nitrogen-doped graphitic hollow shells as a potential candidate for biological applications," J. Mater. Chem. B 1, 1229 (2013). [link]

P. V. Tuong, J. W. Park, J. Y. Rhee, K. W. Kim, W. H. Jang, H. Cheong, and Y. P. Lee "Polarization-insensitive and polarization-controlled dual-band absorption in metamaterials," Appl. Phys. Lett. 102, 081122 (2013). [link]



2012


J.-K. Chio, J.-H.Huh, S.-D. Kim, D. Moom, D. Yoon, K. Joo, J. Kwak, J. H. Chu, S. Y. Kim, K. Park, Y.-W. Kim, E. Yoon, H. Cheong, S.-Y. Kwon "One-step graphene coating of heteroepitaxial GaN films," Nanotechnology 23, 435603 (2012). [link]

H. Y. Zheng, X. R. Jin, J. W. Park, Y. H. Lu, J. Y. Rhee, W. H. Jang, H. Cheong, Y. P. Lee "Tunable dual-band perfect absorbers based on extraordinary optical transmission and Fabry-Perot cavity resonance," Opt. Express 20, 24002 (2012). [link]

J.-U. Lee, D. Yoon, H. Cheong, "Estimation of Young’s Modulus of Graphene by Raman Spectroscopy," Nano Lett. 12, 4444 (2012). [link]

M. Kim, H. A. Yoon, S. Woo, D. Yoon, S. W. Lee, H. Cheong, "Polarization dependence of photocurrent in a metal-graphene-metal device," Appl. Phys. Lett. 101, 073103 (2012). [link]

H. G. Na, T. V. Khai, D. S. Kwak, Y. J. Kwon, K. B. Shim, S. S. Kim, H. Cheong, H. W. Kim, "Au-assisted growth, Raman spectra, and photoluminescence of Mg2SiO4 nanowires," J. Ceram. Process. Res. 13, 210 (2012). [link]

P. V. Tuong, J. W. Park, V. D. Lam, K. W. Kim, H. Cheong, W. H. Jang, Y. P. Lee, "Simplified perfect absorber structure," Comput. Mater. Sci. 61, 243 (2012). [link]

J. H. Park, H. Lim, H. Cheong, K. M. Lee, H. C. Sohn, G. Lee, S. Im, "Anisotropic mobility of small molecule-polymer blend channel in organic transistor: Characterization of channel materials and orientation," Org. Electron. 13, 1250 (2012). [link]

H. W. Kim, H. G. Na, J. Bae, J. C. Yang, S. S. Kim, H. Cheong, D. Y. Kim, "Synthesis and characterization of orthorhombic Sb2O4 nanowire prepared by heating Sb2S3 powder," Electrochem. Solid State Lett. 15, K49 (2012). [link]

X.-R. Jin, Y. Lu, J. Park, H. Zheng, F. Gao, Y. Lee, J. Y. Rhee, K. W. Kim, H. Cheong, W. H. Jang, "Manipulation of electromagnetically-induced transparency in planar metamaterials based on phase coupling," J. Appl. Phys. 111, 073101 (2012). [link]

D. Yoon, H. Cheong, J. S. Chio, B. H. Park, "Enhancement of the Raman Scattering Intensity in Folded Bilayer Graphene," J. Korean Phys. Soc. 60, 1278 (2012). [link]

A. S. Opanasyuk, D. I. Kurbatov, M. M. Ivashchenko, I. Yu. Protsenko, H. Cheong, "Properties of the Window Layers for the CZTSe and CZTS Based Solar Cells," J. Nano-Electron. Phys. 4, 01024 (2012). [link]

M. Park, S. Ahn, J. H. Yun, J. Gwak, A. Cho, S. Ahn, K. Shin, D. Nam, H. Cheong, K. Yoon, "Characteristics of Cu(In,Ga)Se2 (CIGS) thin films deposited by a direct solution coating process," J. Alloy. Compd. 513, 68 (2012). [link]

K. Heo, H. Lee, Y. Park, J. Park, H.-J. Lim, D. Yoon, C. Lee, M. Kim, H. Cheong, J. Park, J. Jian, S. Hong, "Aligned networks of cadmium sulfide nanowires for highly flexible photodetectors with improved photoconductive responses," J. Mater. Chem. 22, 2173 (2012). [link]



2011


X.-R. JIn, J. Park, H. Zheng, S. Lee, Y. Lee, J. Y. Rhee, K. W. Kim, H. Cheong, W. H. Jang, "Highly-dispersive transparency at optical frequencies in planar metamaterials based on two-bright-mode coupling," Opt. Express 19, 21652 (2011). [link]

N. C. Jeong, H. Lim, H. Cheong, K. B. Yoon, "Distribution Pattern of Length, Length Uniformity, and Density of TiO32- Quantum Wires in an ETS-10 Crystal Revealed by Laser-Scanning Confocal Polarized Micro-Raman Spectroscopy," Angew. Chem.-Int. Edit. 50, 8697 (2011). [link]

D. Park, D. Nam, S. Jung, S. An, J. Gwak, K. Yoon, J. H. Yun, H. Cheong, "Optical characterization of Cu2ZnSnSe4 grown by thermal co-evaporation," Thin Solid Films 519, 7386 (2011). [link]

I.-S. Byun, D. Yoon, J. S. Choi, I. Hwang, D. H. Lee, M. J. Lee, T. Kawai, Y.-W. Son, Q. Jia, H. Cheong, B. H. Park,"Nanoscale Lithography on Monolayer Graphene Using Hydrogenation and Oxidation," ACS Nano 8, 6417 (2011). [link]

D. Yoon, Y.-W. Son, H. Cheong, "Negative Thermal Expansion Coefficient of Graphene Measured by Raman Spectroscopy," Nano Lett. 11, 3227 (2011). [link]

A. R. Jeong, W. Jo, C. Ko, M. Han, S. J. Kang, M. Kim, D. Y. Park, H. Cheong, H. J. Yun, "Growth and structural properties of pulsed laser-ablated CuInSe2 nanoparticles by pulsed-laser ablation and selenization process," J. Alloy. Compd. 509, 8073 (2011). [link]

J. S. Choi, J.-S. Kim, I.-S. Byun, D. H. Lee, M. J. Lee, B. H. Park, C. Lee, D. Yoon, H. Cheong, K. H. Lee, Y.-W. Son, J. Y. Park, M. Salmeron, "Friction Anisotropy- Driven Domain Imaging on Exfoliated Monolayer Graphene," Science 333, 607 (2011). [link]

Y. D. Kim, K. Heo, M. R. Cho, S. Cho, D. Yoon, H. Cheong, J. Jian, S. Hong, Y. D. Park, "Determination of Mechanical Properties of Single Crystal CdS Nanowires from Dynamic Flexural Measurements of Nanowire Mechanical Resonators," Appl. Phys. Express 4, 065004 (2011). [link]

G. Kim, W. Jo, H.-S. Ha, S. S. Oh, D. Y. Park, H. Cheong, "Characterization of Co-Evaporated SmBa2Cu3O7 Coated Conductors by Polarized-Raman Scattering Spectroscopy," IEEE Trans. Appl. Supercond. 21, 3352 (2011). [link]

G. J. Lee, Y. P. Lee, H. Lim, H. Cheong, B.-H. Kil, S.-H. Han, "Photoluminescence and Nonlinear Optical Properties of Semiconductor Nanocomposites Consisting of ZnO Nanorods and CdS Nanodots," J. Korean Phys. Soc. 58, 1290 (2011). [link]

H. Lim, H. Cheong, S. Choi, Y. N. Choi, J. S. Lee, "Optical Properties of Organic Dye Molecules Incorporated within Different Zeolitic Structures," J. Korean Phys. Soc. 58, 1035 (2011). [link]

D. Yoon, Y.-W. Son, H. Cheong, "Strain-Dependent Splitting of the Double-Resonance Raman Scattering Band in Graphene," Phys. Rev. Lett. 106, 155502 (2011). [link]

J.-U. Lee, D. Yoon, H. Kim, S. W. Lee, H. Cheong, "Thermal conductivity of suspended pristine graphene measured by Raman spectroscopy," Phys. Rev. B 83, 081419(R) (2011). [link]

S. S. Kim, J. Y. Park, H. S. Kim, H. G. Na, J. C. Yang, S. H. Shim, C. Lee, D. Park, D. Nam, H. Cheong, H. W. Kim, "Temperature-controlled synthesis of In2Ge2O7 nanowires and their photoluminescence properties," J. Phys. D-Appl. Phys. 44, 025502 (2011). [link]

G. J. Lee, S.-K. Min, C.-H. Oh, Y. Lee, H. Lim, H. Cheong, H. J. Nam, C. K. Hwangbo, S.-K. Min, S.-H. Han, "Effects of Seed Layers on Structural, Morphological, and Optical Properties of ZnO Nanorods," J. Nanosci. Nanotechnol. 11, 511 (2011). [link]



2010


J. M. Jin, H. Cheong, "Long-term Durability of Pd/a-WO3 and Pd-Pt/a-WO3 Thin Films for Hydrogen Sensors," J. Korean Phys. Soc. 57, 1885 (2010). [link]

H. Lim, H. Cheong, J. S. Lee, K. B. Yoon, "Depolarization of Luminescence from Dye Molecules in Solutions or Embedded in Zeolite Pores," J. Korean Phys. Soc. 57, 1614 (2010). [link]

G. Kim, A. R. Jeong, W. Joa, D. Y. Park, H. Cheong, G. M. Shin, S. I. Yoo, "Optimal growth conditions for GdBa2Cu3O7 thin-film coated conductors characterized by polarized Raman scattering spectroscopy," Physica C 470, 1021 (2010). [link]

G. J. Lee, H. J. Nam, C. K. Hwangbo, H. Lim, H. Cheong, H. S. Kim, C. S. Yoon, S.-K. Min, S.-H. Han, Y. Lee, "Growth of ZnO-Nanorod Grating on the Seed Grating Produced by Femtosecond Laser Pulses," JPN. J. Appl. Phys. 49, 105001 (2010). [link]

H. Lim, S. Park, H. Cheong, H.-M. Choi, Y. C. Kim, "Discrimination between natural and HPHT-treated type IIa diamonds using photoluminescence spectroscopy," Diam. Relat. Mat. 19, 1254 (2010). [link]

G. J. Lee, Y. Lee, H.-H. Lim, M. Cha, S. S. Kim, H. Cheong, S.-K. Min, S.-H. Han, "Photoluminescence and Lasing Properties of ZnO Nanorods," J. Korean Phys. Soc. 57, 1624 (2010). [link]

C. W. Ahn, H.-I. Hwang, K. S. Lee, B. M. Jin, S. Park, G. Park, D. Yoon, H. Cheong, H. J. Lee, I. W. Kim, "Raman Spectra Study of K0.5Na0.5NbO3 Ferroelectric Thin Films," JPN. J. Appl. Phys. 49, 095801 (2010). [link]

S. Ahn, S. Jung, J. Gwak, A. Cho, K. Shin, K. Yoon, D. Park, H. Cheong, J. H. Yun, "Determination of band gap energy (Eg) of Cu2ZnSnSe4 thin films: On the discrepancies of reported band gap values," Appl. Phys. Lett. 97, 021905 (2010).

S. Hong, H. Cheong, G. Park, "Raman analysis of a YBa2Cu3O7-thin film with oxygen depletion," Physica C 470, 383 (2010). [link]

G. J. Lee, K.-M. Lee, W.-S. Hong, S. S. Kim, H. Cheong, C. S. Yoon, Y. Lee, "Fabrication of nanocrystalline silicon gratings embedded within a silicon nitride matrix by femtosecond laser-induced crystallization," JPN. J. Appl. Phys. 49, 015502 (2010). [link]



2009


J. Y. Shim, J. D. Lee, J. M. Jin, H. Cheong, S.-H. Lee, "Pd-Pt alloy as a catalyst in gasochromic thin films for hydrogen sensors," Sol. Energy Mater. Sol. Cells 93, 2133 (2009). [link]

J. Y. Shim, J. D. Lee, J. M. Jin, H. Cheong, S.-H. Lee, "Comparison of Pd, Pt and Pt/Pd as catalysts for hydrogen sensor films," J. Korean Phys. Soc. 55, 2693 (2009). [link]

S. S. Kim, Y.-J. Kim, G.-C. Yi, H. Cheong, "Whispering-gallery-modelike resonance of luminescence from a single hexagonal ZnO microdisk," J. Appl. Phys. 106, 094310 (2009). [link]

N. C. Jeong, Y. J. Lee, J.-H. Park, H. Lim, C.-H. Shin, H. Cheong, K. B. Yoon, "New Insights into ETS-10 and titanate quantum wire: a comprehensive characterization," J. Am. Chem. Soc. 131, 13080 (2009). [link]

H. Min, Y. Jeon, S. Park, H. Kwon, J. Pak, D. Park, S. Song, H. Cheong, G. Park, H. Kim, D. Kim, "Second Harmonic Generation from Bi 3.75La0.25Ti3O12 Thin Films Grown by Sol-gel Method," J. Korean Phys. Soc. 55, 1278 (2009). [link]

D. Yoon, H. Moon, Y.-W. Son, J. S. Choi, B. H. Park, Y. H. Cha, Y. D. Kim, H. Cheong, "Interference effect on Raman spectrum of graphene on SiO2/Si," Phys. Rev. B 80, 125422 (2009). [link]

D. Yoon, H. Moon, H. Cheong, J. S. Choi, J. A. Choi, B. H. Park, "Variations in the Raman Spectrum as a Function of the Number of Graphene Layers," J. Korean Phys. Soc. 55, 1299 (2009). [link]

G. J. Lee, Y. Lee, S. S. Kim, H. Cheong, C. S. Yoon, Y.-D. Son, J. Jang, "Effect of post thermal annealing on femtosecond laser crystallization of 500-nm-thick amorphous silicon films," J. Korean Phys. Soc. 55, 50 (2009). [link]

G. Kim, W. Jo, G. M. Shin, S. I. Yoo, D. Y. Park, H. Cheong, H. K. Kim, S. H. Moon, "Growth behaviors of high Jc Gd1+xBa2-xCu3O7 coated conductors on IBAD-MgO templates probed by X-ray diffraction and Raman scattering spectroscopy," IEEE Trans. Appl. Supercond. 19, 2929 (2009). [link]

D. H. Kim, G. E. Lee, E. Yoon, D.-Y. Park, H. Cheong, W. S. Choi, T. W. Noh, J.-H. Cho, J.-S. Park, "Effect of dimethylhydrazine on p-type conductivity of as-grown Mg-doped GaN," Phys. Status Solidi-Rapid Res. Lett. 3(2-3), 52 (2009). [link]

S. Park, J. Pak, D. Park, H. Cheong, G. Park, "a-axis contribution to the polarization value in (117)/(200)-oriented Bi3.75La0.25Ti3O12 thin films deposited on Pt(111)/Ti/SiO2/Si substrate," J. Korean Phys. Soc. 54, 926 (2009). [link]



2008


D. Yoon, H. Moon, Y.-W. Son, G. Samsonidze, B. H. Park, J. B. Kim, Y. Lee, H. Cheong, "Strong polarization dependence of double-resonant Raman intensities in graphene," Nano Lett. 8, 4270 (2008). [link]

C. Kim, E. Cho, S. Yoon, D. Kim, R. Jung, J. Lee, S. Seo, H. Cheong, M. Bastjan, B. Schulz, M. Ruubhausen, "Structural and stoichiometry change in NiO with a thin IrO2 layer," J. Korean Phys. Soc. 53, 3390 (2008). [link]

H. Lim, H. Cheong, J. S. Lee, K. B. Yoon, "Concentration dependence of the photoluminescence energy and anisotropy from dye molecules and dye molecule-zeolite composites," J. Korean Phys. Soc. 53, 2328 (2008). [link]

G. J. Lee, Y. Lee, S. G. Jung, C. K. Hwangbo, S. S. Kim, H. Cheong, C. S. Yoon, "Photo-structuring of silver-oxide films by using femtosecond laser pulses," J. Korean Phys. Soc. 53, 1414 (2008). [link]

J. Kim, S. A. Yang, Y. C. Choi, J. K. Han, K. O. Jeong, Y. J. Yun, D. J. Kim, S. M. Yang, D. Yoon, H. Cheong, K.-S. Chang, T. W. Noh, S. D. Bu, "Ferroelectricity in highly ordered arrays of ultra-thin-walled Pb(Zr,Ti)O3 nanotubes composed of nanometer-sized Perovskite crystallites," Nano Lett. 8, 1813 (2008). [link]

H. J. Kim, Y. Shin, S.-Y. Kwon, H. J. Kim, S. Choi, S. Hong, C. S. Kim, J.-W. Yoon, H. Cheong, E. Yoon, "Compositional analysis of In-rich InGaN layers grown on GaN templates by metalorganic chemical vapor deposition," J. Cryst. Growth 310, 3004 (2008). [link]

Y. Jeon, J. Sung, C. Seo, H. Lim, H. Cheong, M. Kang, B. Moon, Y. Ouchi, D. Kim, "Structures of ionic liquids with different anions studied by infrared vibration spectroscopy," J. Phys. Chem. B 112, 4735 (2008). [link]

S.-Y. Kwon, H. J. Kim, E. Yoon, Y. Jang, K.-J. Yee, D. Lee, S.-H. Park, D.-Y. Park, H. Cheong, F. Rol, L. S. Dang, "Optical and microstructural studies of atomically flat ultrathin In-rich InGaN/GaN multiple quantum wells," J. Appl. Phys. 103, 063509 (2008). [link]

N. Kim, C. W. Seo, H. Cheong, "Improved durability of Pd/WO3 hydrogen sensor films prepared by sputtering," J. Korean Phys. Soc. 52, s50 (2008). [link]

Y. Jeon, J. Sung, D. Kim, C. Seo, H. Cheong, Y. Ouchi, R. Ozawa, H. Hamaguchi, "Structural change of 1-butyl-3-methylimidazolium tetrafluoroborate + water mixtures studied by infrared vibrational spectroscopy," J. Phys. Chem. B 112, 923 (2008). [link]