Information & Opto-Energy
Materials (IOEM) Laboratory

Impact of sidewall passivation on reliability in InGaN-based micro-LEDs

Tae Kyoung Kim, Abu Bashar Mohammad Hamidul Islam, Jongil Kim, Hyeondong Lee, Minji Kim, Joohan Bae, June-O Song, Dong-Soo Shin, Jong-In Shim, Sang Ho Oh, Joon Seop Kwak

Advanced Photonics Nexus 5(1) 016014 (2026)

Improved Optoelectronic Performance of InGaN/AlGaN Near-Ultraviolet LEDs: Effect of n-GaN Thickness

Abu Bashar Mohammad Hamidul Islam , Dong-Soo Shin , Joon Seop Kwak , Jong-In Shim

IEEE TRANSACTIONS ON ELECTRON DEVICES 73(1) 460-467 (2026)

Double-Sided Epitaxial Structure with Quantum Dots-Embedded Porous GaN for Enhanced Color Conversion

Jaeyoung Baik, Je-Sung Lee, Jeongwoon Kim, Hoe-Min Kwak, Jin-Soo Kim, Yu-Jin Park,Woo-Lim Jeong, Hyeondong Lee, Joon Seop Kwak, Chang-Mo Kang,* and Dong-Seon Lee*

Advanced Optical Materials (2025)

Enhanced size-dependent efficiency of InGaN/AlGaN nearultraviolet micro-LEDs

Abu Bashar Mohammad Hamidul Islam, Tae Kyoung Kim, Yu-Jung Cha, Joosun Yun, June-O Song, Dong-Soo Shin, Jong-In Shim, Joon Seop Kwak

APPLIED PHYSICS LETTERS 126 0453503 (2025)

Temperature-Induced Stress Performance of High-Density GaN Micro-LED Arrays for Industrial Mass Production

Eun Jeong Youn, Tae Kyoung Kim, Abu Bashar Mohammad Hamidul Islam, Jiwon Kim, Eun-Kyung Chu, Yunhee Shin, Sang Hyun Jung, Young Su Choi, Dong-Soo Shin, Jong-In Shim, Joon Seop Kwak, Hyeong-Ho Park

ACS Applied Electronic Materials 6 8819-8827 (2024)

Accurate Modeling for Small-Signal Response Analysis in GaInN/GaN-Based Micro-Light-Emitting Devices

Changeun Park, Tae Kyoung Kim, Joon Seop Kwak, Dong-Pyo Han

ACS Photonics 11 4933-4940 (2024)

Temperature-Dependent Efficiency Droop in GaN- Based Blue Micro Light-Emitting Diodes

Abu Bashar Mohammad Hamidul Islam, Tae Kyoung Kim, Yu-Jung Cha, Dong-Soo Shin, Jong-In Shim and Joon Seop Kwak

ECS Journal of Solid State Science and Technology 12(125002) 2162-8777 (2023)

Determining the Turn-On Voltage of GaN-Based Light-Emitting Diodes: From Near-Ultraviolet to Green Spectra

Abu Bashar Mohammad Hamidul Islam, Dong-Soo Shin, Joon Seop Kwak and Jong-In Shim

ECS Journal of Solid State Science and Technology 12(126001) 2162-8777 (2023)

Experimental Probing of the Bias Dependent Self-Heating in AlGaN/GaN HEMTs With a Transparent Indium Tin Oxide…

Anwarul Karim, Tae Kyoung Kim, Daniel Shoemaker, Yiwen Song, Joon Seop Kwak, Sukwon Choi

International Electronic Packaging Technical Conference and Exhibition 86557 V001T09A011 (2022)

Generation of sidewall defects in InGaN/GaN blue micro-LEDs under forward-current stress

Abu Bashar Mohammad Hamidul Islam, Tae Kyoung Kim, Dong-Soo Shin, Jong-In Shim, Joon Seop Kwak

Applied Physics Letters 121 (1) 013501 (2022)