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Journal Articles

GaN remote epitaxy on a pristine graphene buffer layer via controlled graphitization of SiC

Seokje Lee, Jekyung Kim, Bo-In Park, Han Ik Kim, Changhyun Lim, Eunsu Lee, Jeong Yong Yang, Joonghoon Choi, Young Joon Hong, Celesta S. Chang, Hyun S. Kum, Jeehwan Kim, Kyusang Lee, Hyunseok Kim, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 125, 252102 (2024)
https://doi.org/10.1063/5.0235653
Published: December 2024
View article titled, GaN remote epitaxy on a pristine graphene buffer layer via controlled graphitization of SiC
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Journal Articles

Helicity exchange and symmetry breaking of in-plane phonon scattering of h-BN probed by polarized Raman spectroscopy

Shih-Po Chien, Yu-Chen Chang, Kristan Bryan Simbulan, Shantanu Saha, Yu-Fan Chiang, Rajendra K. Saroj, Gyu-Chul Yi, Shamsul Arafin, Ting-Hua Lu, Yann-Wen Lan
Journal: Applied Physics Letters
Appl. Phys. Lett. 121, 182203 (2022)
https://doi.org/10.1063/5.0114075
Published: November 2022
View article titled, Helicity exchange and symmetry breaking of in-plane phonon scattering of h-BN probed by polarized Raman spectroscopy
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Includes: Supplementary data
Journal Articles

Novel epitaxy of functional materials

Jeehwan Kim, Gyu-Chul Yi, Abdallah Ougazzaden, Jian Shi
Journal: Journal of Applied Physics
J. Appl. Phys. 132, 060401 (2022)
https://doi.org/10.1063/5.0109143
Published: August 2022
View article titled, Novel epitaxy of functional materials
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Journal Articles

Large-scale, single-oriented ZnO nanostructure on h-BN films for flexible inorganic UV sensors

Hongseok Oh, Youngbin Tchoe, Heehun Kim, Jiyoung Yun, Mingi Park, Seongjun Kim, Young-Soo Lim, Hanjoon Kim, Woosung Jang, Jaeyong Hwang, Yeda Song, Juntae Koh, Gyu-Chul Yi
Journal: Journal of Applied Physics
J. Appl. Phys. 130, 223105 (2021)
https://doi.org/10.1063/5.0067644
Published: December 2021
View article titled, Large-scale, single-oriented ZnO nanostructure on <em>h-</em>BN films for flexible inorganic UV sensors
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Includes: Supplementary data
Journal Articles

One-dimensional semiconductor nanostructures grown on two-dimensional nanomaterials for flexible device applications

Young Joon Hong, Rajendra K. Saroj, Won Il Park, Gyu-Chul Yi
Journal: APL Materials
APL Mater. 9, 060907 (2021)
https://doi.org/10.1063/5.0049695
Published: June 2021
View article titled, One-dimensional semiconductor nanostructures grown on two-dimensional nanomaterials for flexible device applications
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Journal Articles

Understanding luminescence properties of grain boundaries in GaN thin films and their atomistic origin

Hyobin Yoo, Sangmoon Yoon, Kunook Chung, Seoung-Hun Kang, Young-Kyun Kwon, Gyu-Chul Yi, Miyoung Kim
Journal: Applied Physics Letters
Appl. Phys. Lett. 112, 131901 (2018)
https://doi.org/10.1063/1.5018598
Published: March 2018
View article titled, Understanding luminescence properties of grain boundaries in GaN thin films and their atomistic origin
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Includes: Supplementary data
Journal Articles

ZnO nanotube waveguide arrays on graphene films for local optical excitation on biological cells

Editor’s Pick
Hyeonjun Baek, Hankyul Kwak, Minho S. Song, Go Eun Ha, Jongwoo Park, Youngbin Tchoe, Jerome K. Hyun, Hye Yoon Park, Eunji Cheong, Gyu-Chul Yi
Journal: APL Materials
APL Mater. 5, 046106 (2017)
https://doi.org/10.1063/1.4981646
Published: April 2017
View article titled, ZnO nanotube waveguide arrays on graphene films for local optical excitation on biological cells
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Journal Articles

Distinctive mapping of strain and quantum size effects using depth-resolved photoluminescence in ZnO nanoneedles

Hyeong-Yong Hwang, Hyeonjun Baek, Gyu-Chul Yi, Hyoung-Chan Kim, Young-Dahl Jho
Journal: AIP Advances
AIP Advances 6, 045021 (2016)
https://doi.org/10.1063/1.4948452
Published: April 2016
View article titled, Distinctive mapping of strain and quantum size effects using depth-resolved photoluminescence in ZnO nanoneedles
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Journal Articles

Growth and optical characteristics of high-quality ZnO thin films on graphene layers

Suk In Park, Youngbin Tchoe, Hyeonjun Baek, Jaehyuk Heo, Jerome K. Hyun, Janghyun Jo, Miyoung Kim, Nam-Jung Kim, Gyu-Chul Yi
Journal: APL Materials
APL Mater. 3, 016103 (2015)
https://doi.org/10.1063/1.4905488
Published: January 2015
View article titled, Growth and optical characteristics of high-quality ZnO thin films on graphene layers
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Journal Articles

Selective excitation of Fabry-Perot or whispering-gallery mode-type lasing in GaN microrods

Hyeonjun Baek, Jerome K. Hyun, Kunook Chung, Hongseok Oh, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 105, 201108 (2014)
https://doi.org/10.1063/1.4902373
Published: November 2014
View article titled, Selective excitation of Fabry-Perot or whispering-gallery mode-type lasing in GaN microrods
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Journal Articles

Twinning effect on photoluminescence spectra of ZnSe nanowires

Jing Xu, Chunrui Wang, Binhe Wu, Xiaofeng Xu, Xiaoshuang Chen, Hongseok Oh, Hyeonjun Baek, Gyu-Chul Yi
Journal: Journal of Applied Physics
J. Appl. Phys. 116, 174303 (2014)
https://doi.org/10.1063/1.4900850
Published: November 2014
View article titled, Twinning effect on photoluminescence spectra of ZnSe nanowires
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Journal Articles

Growth and characterizations of GaN micro-rods on graphene films for flexible light emitting diodes

Kunook Chung, Hyeonjun Beak, Youngbin Tchoe, Hongseok Oh, Hyobin Yoo, Miyoung Kim, Gyu-Chul Yi
Journal: APL Materials
APL Mater. 2, 092512 (2014)
https://doi.org/10.1063/1.4894780
Published: September 2014
View article titled, Growth and characterizations of GaN micro-rods on graphene films for flexible light emitting diodes
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Journal Articles

GaN nanowire/thin film vertical structure p–n junction light-emitting diodes

Young Joon Hong, Chul-Ho Lee, Jun Beom Park, Sung Jin An, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 103, 261116 (2013)
https://doi.org/10.1063/1.4860971
Published: December 2013
View article titled, GaN nanowire/thin film vertical structure <em>p–n</em> junction light-emitting diodes
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Journal Articles

Microstructural defects in GaN thin films grown on chemically vapor-deposited graphene layers

Hyobin Yoo, Kunook Chung, Suk In Park, Miyoung Kim, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 102, 051908 (2013)
https://doi.org/10.1063/1.4790385
Published: February 2013
View article titled, Microstructural defects in GaN thin films grown on chemically vapor-deposited graphene layers
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Journal Articles

Excitonic origin of enhanced luminescence quantum efficiency in MgZnO/ZnO coaxial nanowire heterostructures

Jinkyoung Yoo, Bonghwan Chon, Wei Tang, Taiha Joo, Le Si Dang, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 100, 223103 (2012)
https://doi.org/10.1063/1.4721519
Published: May 2012
View article titled, Excitonic origin of enhanced luminescence quantum efficiency in MgZnO/ZnO coaxial nanowire heterostructures
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Journal Articles

Formation of 10 - μ m -level patterned organic thin film using microthermal evaporation

Jun Hee Choi, Andrei Zoulkarneev, Tae Yong Noh, Young Gu Lee, Sun Il Kim, Sung Soo Park, Chan Wook Baik, Byoung Lyong Choi, Miyoung Kim, Gyu-Chul Yi, Jong Min Kim
Journal: Journal of Vacuum Science & Technology B
J. Vac. Sci. Technol. B 29, 021016 (2011)
https://doi.org/10.1116/1.3554400
Published: February 2011
View article titled, Formation of 10 - μ m -level patterned organic thin film using microthermal evaporation
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Journal Articles

Vertically aligned ZnO nanostructures grown on graphene layers

Yong-Jin Kim, Jae-Hyun Lee, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 95, 213101 (2009)
https://doi.org/10.1063/1.3266836
Published: November 2009
View article titled, Vertically aligned ZnO nanostructures grown on graphene layers
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Journal Articles

Whispering-gallery-modelike resonance of luminescence from a single hexagonal ZnO microdisk

Sung Soo Kim, Yong-Jin Kim, Gyu-Chul Yi, Hyeonsik Cheong
Journal: Journal of Applied Physics
J. Appl. Phys. 106, 094310 (2009)
https://doi.org/10.1063/1.3255971
Published: November 2009
View article titled, Whispering-gallery-modelike resonance of luminescence from a single hexagonal ZnO microdisk
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Journal Articles

Modulation doping in ZnO nanorods for electrical nanodevice applications

Jinkyoung Yoo, Chul-Ho Lee, Yong-Joo Doh, Hye Seong Jung, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 94, 223117 (2009)
https://doi.org/10.1063/1.3148666
Published: June 2009
View article titled, Modulation doping in ZnO nanorods for electrical nanodevice applications
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Journal Articles

GaN / In 1 − x Ga x N / GaN / ZnO nanoarchitecture light emitting diode microarrays

Chul-Ho Lee, Jinkyoung Yoo, Young Joon Hong, Jeonghui Cho, Yong-Jin Kim, Seong-Ran Jeon, Jong Hyeob Baek, Gyu-Chul Yi
Journal: Applied Physics Letters
Appl. Phys. Lett. 94, 213101 (2009)
https://doi.org/10.1063/1.3139865
Published: May 2009
View article titled, GaN / In 1 − x Ga x N / GaN / ZnO nanoarchitecture light emitting diode microarrays
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