|Improved heat dissipation in gallium nitride light-emitting diodes with embedded graphene oxide pattern|
N Han, T Viet Cuong, M Han, B Deul Ryu, S Chandramohan, J Bae Park, ...
Nature communications 4 (1), 1452, 2013
|Work-function-tuned multilayer graphene as current spreading electrode in blue light-emitting diodes|
S Chandramohan, J Hye Kang, YS Katharria, N Han, Y Seon Beak, ...
Applied Physics Letters 100 (2), 023502, 2012
|Comparison of various surface textured layer in InGaN LEDs for high light extraction efficiency|
JH Kang, JH Ryu, HK Kim, HY Kim, N Han, YJ Park, P Uthirakumar, ...
Optics express 19 (4), 3637-3646, 2011
|Impact of Interlayer Processing Conditions on the Performance of GaN Light-Emitting Diode with Specific NiOx/Graphene Electrode|
S Chandramohan, JH Kang, BD Ryu, JH Yang, S Kim, H Kim, JB Park, ...
ACS Applied Materials & Interfaces 5 (3), 958-964, 2013
|Chemically modified multilayer graphene with metal interlayer as an efficient current spreading electrode for InGaN/GaN blue light-emitting diodes|
S Chandramohan, JH Kang, YS Katharria, N Han, YS Beak, KB Ko, ...
Journal of Physics D: Applied Physics 45 (14), 145101, 2012
|DFB laser diodes based on GaN using 10th order laterally coupled surface gratings|
JH Kang, H Wenzel, V Hoffmann, E Freier, L Sulmoni, RS Unger, ...
IEEE Photonics Technology Letters 30 (3), 231-234, 2017
|Impact of two-floor air prism arrays as an embedded reflector for enhancing the output power of InGaN/GaN light emitting diodes|
HG Kim, HK Kim, HY Kim, JH Ryu, JH Kang, N Han, P Uthirakumar, ...
Applied Physics Letters 95 (22), 221110, 2009
|Nanoscale ITO/ZnO layer-texturing for high-efficiency InGaN/GaN light emitting diodes|
P Uthirakumar, JH Kang, BD Ryu, HG Kim, HK Kim, CH Hong
Materials Science and Engineering: B 166 (3), 230-234, 2010
|High performance of InGaN light-emitting diodes by air-gap/GaN distributed Bragg reflectors|
JH Ryu, HY Kim, HK Kim, YS Katharria, N Han, JH Kang, YJ Park, M Han, ...
Optics Express 20 (9), 9999-10003, 2012
|Synthesis and improved luminescence properties of OLED/ZnO hybrid materials|
U Periyayya, JH Kang, JH Ryu, CH Hong
Vacuum 86 (3), 254-260, 2011
|Improvement of light output power in InGaN/GaN light-emitting diodes with a nanotextured GaN surface using indium tin oxide nanospheres|
JH Kang, HG Kim, HK Kim, HY Kim, JH Ryu, P Uthirakumar, N Han, ...
Japanese Journal of Applied Physics 48 (10R), 102104, 2009
|The different types of ZnO materials on the performance of dye-sensitized solar cells|
P Uthirakumar, JH Kang, S Senthilarasu, CH Hong
Physica E: Low-dimensional Systems and Nanostructures 43 (9), 1746-1750, 2011
|Enhanced light output power of GaN-based light-emitting diodes by nano-rough indium tin oxide film using ZnO nanoparticles|
B Deul Ryu, P Uthirakumar, J Hye Kang, B Jun Kwon, S Chandramohan, ...
Journal of Applied Physics 109 (9), 093116, 2011
|Enhancement of light output power in InGaN/GaN LEDs with nanoroughed hemispherical indium tin oxide transparent ohmic contacts|
JH Kang, HG Kim, JH Ryu, HK Kim, HY Kim, J Joo, MS Lee, YJ Park, ...
Electrochemical and Solid-State Letters 13 (2), D1, 2009
|Continuous-wave operation of DFB laser diodes based on GaN using 10th-order laterally coupled surface gratings|
JH Kang, H Wenzel, E Freier, V Hoffmann, O Brox, J Fricke, L Sulmoni, ...
Optics letters 45 (4), 935-938, 2020
|Optically pumped DFB lasers based on GaN using 10th-order laterally coupled surface gratings|
JH Kang, M Martens, H Wenzel, V Hoffmann, W John, S Einfeldt, ...
IEEE Photonics Technology Letters 29 (1), 138-141, 2016
|Stress-relaxed growth of n-GaN epilayers|
JH Ryu, YS Katharria, HY Kim, HK Kim, KB Ko, N Han, JH Kang, YJ Park, ...
Applied Physics Letters 100 (18), 181904, 2012
|Enhancement of light output power in GaN-based light-emitting diodes using indium tin oxide films with nanoporous structures|
JH Kang, JH Ryu, HK Kim, HY Kim, N Han, MS Lee, YJ Park, ...
Thin Solid Films 520 (1), 437-441, 2011
|Effect of embedded silica nanospheres on improving the performance of InGaN/GaN light-emitting diodes|
YJ Park, HY Kim, JH Ryu, HK Kim, JH Kang, N Han, M Han, H Jeong, ...
Optics Express 19 (3), 2029-2036, 2011
|Stimulated N-doping of reduced graphene oxide on GaN under excimer laser reduction process|
BD Ryu, N Han, M Han, S Chandramohan, YJ Park, KB Ko, JB Park, ...
Materials Letters 116, 412-415, 2014