Publications

Spectral Tuning of Single Photon Emission in Hexagonal Boron Nitride

S. Lim, J.-U. Lee

In preparation


Broadband Enhancement of Second-order Susceptibility in Scrolled Monolayer

S.Han, Y.S.Heo, J.-U. Lee

In preparation


Large-scale Analysis of Defects in Atomically Thin Semiconductors using Hyperspectral Line Imaging

S. Lim*, T. Kim*, T. Park, Y. S. Heo, S. Yang, H. Seo, J. Suh, J.-U. Lee

Submitted


Mesoscopic Stacking Reconfigurations in Stacked van der Waals Film

Y.S. Heo, T. W. Kim, W. Lee, J. Choi, S. Park, D.-I. Yeom, J.-U. Lee

Small 230629 (2023) / arXiv


Indirect Band Gap in Scrolled MoS2 Monolayers

J. Na, C. Park, C. H. Lee, W. R. Choi, S. Choi, J.-U. Lee, W. Yang, H. Cheong, E. Campbell, S. H. Jhang 

Nanomaterials 12 (19), 3353 (2022)


Nano-characterizations of low-dimensional nanostructural materials

H.-W. Seo*,  J.-U. Lee, C.-H. Yang, and K. Chu

Journal of Korean Physical Society  80, 1035 (2022).


Enhanced Optical Third-Harmonic Generation in Phase-Engineered MoTe2 Thin Films

S. Ha, H. Kim, H. Nam, J. Choi, K. Chae, J.-U. Lee, J.-Y. Park, Y. Yoo, D.-I. Yeom 

ACS Photonics  9 (8), 2600 (2022)


Coherent many-body exciton in van der Waals antiferromagnet NiPS3 

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 

Nature 583, 785 (2020)


Polarized Raman spectroscopy of two-dimensional materials

J. Kim,  J.-U. Lee* and H. Cheong*

Journal of Physics: Condensed Matter 32, 343001 (2020).


Structural configurations and Raman spectra of carbon nanoscrolls 

T. Uhm, J. Na, J.-U. Lee, H. Cheong, S. W. Lee, E. E. B. Campbell, S. H. Jhang

Nanotechnology 31, 315707 (2020)


Tuning electrical conductance of MoS2 monolayers through substitutional doping 

H. Gao, J. Suh, M. C. Cao, A. Y. Joe, F. Mujid, K.-H. Lee, S. Xie, P. Poddar, J.-U. Lee, K. Kang, P. Kim, D. A. Muller 

Nano Letters 20(6), 4095 (2020)


Polytipism in few-layer gallium selenide

S. Y. Lim,  J.-U. Lee, J. H. Kim, L. Liang, X. Kong, T. T. Nguyen, Z. Lee, S. Cho, H. Cheong 

Nanoscale 12, 8563 (2020)


Wafer-scale synthesis of monolayer two-dimensional porphyrin polymers for hybrid superlattices 

Y. Zhong, B. Cheng, C. Park, A. Ray, S. Brown, F. Mujid, J.-U. Lee, H. Zhou, J. Suh, K.-H. Lee, A. J. Mannix, K. Kang, S. J. Sibener, D. A. Muller, J. Park

Science 366, (6471), 1379 (2019)


Raman spectroscopy of two-dimensional magnetic van der Waals materials

K. Kim,  J.-U. Lee* and H. Cheong*

Nanotechnology 30 (45), 452001 (2019).


Antiferromagnetic ordering in van der Waals two-dimensional magnetic material MnPS3 probed by Raman spectroscopy

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 

2D materials 6, 041001 (2019)


Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3

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 

Nature communications 10, 345 (2019)


Electrically Robust Single‐Crystalline WTe2 Nanobelts for Nanoscale Electrical Interconnects 

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

Advanced Science 6 (3), 1801370 (2019)


2013~2018

Davydov splitting and polytypism in few-layer MoS2

W. Na, K. Kim, J.-U. Lee, H. Cheong

2D Materials 6 (1), 015004 (2018)


Single-crystalline nanobelts composed of transition metal ditellurides

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

Advanced Materials 30, 1707260 (2018)


Resonance Raman effects in transition metal dichalcogenides

J.-U. Lee and H. Cheong

Journal of Raman Spectroscopy 49 (1), 66 (2018).


Strain-shear coupling in bilayer MoS2

J.-U. Lee*, S. Woo*, J. Park, H. C. Park, Y.-W. Son, H. Cheong

Nature Communications 8, 1370 (2017) / arXiv


Excitonic resonance effects and Davydov splitting in circularly polarized Raman spectra of few-layer WSe2

 S. Kim*, K. Kim*, J.-U. Lee, H. Cheong

2D Materials 4 (4), 045002 (2017) / arXiv


Excitation energy dependence of Raman spectra of few-layer WS2

J. Yang, J.-U. Lee, H. Cheong

FlatChem 3, 64 (2017) / arXiv


Probing evolution of twist-angle-dependent interlayer excitons in MoSe2/WSe2 van der Waals heterostructures

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

ACS Nano 11 (4), 4041 (2017)


Substantial improvements of long-term stability in encapsulation-free WS2 using highly interacting graphene substrate

S.-Y. Kim*, J. Kwak*, J. H. Kim, J.-U. Lee, Y. Jo, S. Y. Kim, H. Cheong, Z. Lee, S.-Y. Kwon

2D Materials 4 (1), 011007 (2016)


Ising-type magnetic ordering in atomically thin FePS3

J.-U. Lee*, S. Lee*, J.H. Ryoo*, S. Kang, T. Y. Kim, P. Kim, C.-H. Park, J.-G. Park, H. Cheong

Nano Letters, 16 (12), 7433 (2016) / arXiv


The enhanced low resistance contacts and boosted mobility in two-dimensional p-type WSe2 transistors through Ar+ ion-beam generated surface defects

D. Kim, H. Du, T. Kim, S. Shin, S. Kim, M. Song, C. Lee, J.-U. Lee, H. Cheong, D. H. Seo, S. Seo

AIP Advances 6 (10), 105307 (2016)


Davydov splitting and excitonic resonance effects in Raman spectra of few-layer MoSe2

K. Kim*, J.-U. Lee*, D. Nam, H. Cheong

ACS Nano 10 (8), 8113 (2016) / arXiv


Determination of the thickness and orientation of few-layer tungsten ditelluride using Raman spectroscopy

M. Kim, S. Han, J.H. Kim, J.-U. Lee, Z. Lee, H. Cheong

2D Materials 3, 034004 (2016) / arXiv


Anisotropic phonon softening of uniaxially strained bilayer graphene

 Y. Cho*, S. Jegal*, J.-U. Lee*, D. Yoon, S.-M. Choi, Y. -W. Son, H. Cheong

Carbon 103, 473 (2016)


Raman signatures of polytypism in molybdenum disulfide

J.-U. Lee, K. Kim, S. Han, G. H. Ryu, Z. Lee, H. Cheong

ACS Nano 10 (2), 1948 (2016) / arXiv


Photocurrent generations at ABA/ABC lateral junction in tri-layer graphene photodetector

 M. Kim, S. -M. Choi, H. A. Yoon, S. K. Choi, J.-U. Lee, J. Kim, S. -W. Lee, Y. -W. Son, H. Cheong

Carbon 96, 454 (2016) / arXiv


Excitation energy dependent Raman spectrum of MoSe2

D. Nam, J.-U. Lee, H. Cheong

Scientific Reports 5, 17113 (2015) / arXiv


Resonant Raman and photoluminescence spectra of suspended molybdenum disulfide

J.-U. Lee*, K. Kim*, H. Cheong

2D Materials 2(4), 044003 (2015) / arXiv


Raman spectroscopic studies on two-dimensional materials

J.-U. Lee, M. Kim, H. Cheong,

Applied Microscopy 45, 126 (2015).


Engineering optical and electronic properties of WS2 by varying the number of layers

 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

ACS Nano 9 (7), 6854 (2015)


Saturable optical absorption in MoS2 nano-sheet optically deposited on the optical fiber facet

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

Optics Communications 335, 224 (2015)


Anomalous excitonic resonance Raman effects in few-layered MoS2

J.-U. Lee*, J. Park*, Y. -W. Son, H. Cheong

Nanoscale 7, 3229 (2015) / arXiv


Anomalous polarization dependence of Raman scattering and crystallographic orientation of black phosphorus

J. Kim*, J.-U. Lee*, J. Lee, C. Lee, H. Cheong

Nanoscale 7 (44), 18708 (2015) / arXiv


Polarized Raman spectroscopy of Cu-poor and Zn-rich single-crystal Cu2ZnSnSe4

D. Nam, J. Kim, J.-U. Lee, A. Nagaoka, K. Yoshino, W. Cha, H. Kim, I. C. Hwang, K. B. Yoon, H. Cheong

Applied Physics Letters 105, 173903 (2014)


Polarization dependence of double resonant Raman scattering band in bilayer graphene

 J.-U. Lee*, N. M. Seck*, D. Yoon, S. -M. Choi, Y. -W. Son, H. Cheong

Carbon 72, 257 (2014) / arXiv


Large scale production of highly conductive reduced graphene oxide sheets by a solvent-free low temperature reduction

K. H. Lee, B. Lee, S. -J. Hwang, J.-U. Lee, H. Cheong, O. -S. Kwon, K. Shin, N. H. Hur

Carbon 69, 327 (2014)


Excitation energy dependent Raman signatures of ABA- and ABC-stacked few-layer graphene

T. A. Nguyen, J.-U. Lee, D. Yoon, H. Cheong

Scientific Reports 4, 4630 (2014) / arXiv

2011~2012

Estimation of Young’s modulus of graphene by Raman spectroscopy

J.-U. Lee, D. Yoon, H. Cheong

Nano Letters 12 (9), 4444 (2012) / arXiv


Thermal conductivity of suspended pristine graphene measured by Raman spectroscopy 

J.-U. Lee, D. Yoon, H. Kim, S. -W. Lee, H. Cheong

Physical Review B 83 (8) 081419 (2011) / arXiv

* equally contributed