Improved Light Extraction Efficiency in Blue Light-Emitting Diodes by SiO
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概要
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We report on the improved light extraction efficiency of blue light-emitting diodes (LEDs) by SiO<inf>2</inf>-coated ZnO nanorods (NRs) grown on indium--tin oxide (ITO). The optical output power of the LEDs with SiO<inf>2</inf>-coated ZnO NRs, which are grown on the patterned sapphire substrates, increases by 5% at 20 mA, compared with that of LEDs with bare ZnO NRs. This increase is attributed to the improved light extraction efficiency of LEDs because the SiO<inf>2</inf>layer with a refractive index lower than that of ZnO NRs further reduces the Fresnel reflection.
- 2013-04-25
著者
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Kang Jang-Won
School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
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Park Seong-Ju
School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea
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Cho Chu-Young
School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea
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Kim Sung-Tae
Samsung Electronics Co., Ltd., Suwon, Gyeonggi 443-742, Republic of Korea
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Kim Na-Yeong
Department of Nanobio Materials and Electronics, World-Class University, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
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Leem Young-Chul
School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
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Hong Sang-Hyun
Department of Nanobio Materials and Electronics, World-Class University, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
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Lim Wantae
Samsung Electronics Co., Ltd., Suwon, Gyeonggi 443-742, Republic of Korea
関連論文
- Growth and Separation of High Quality GaN Epilayer from Sapphire Substrate by Lateral Epitaxial Overgrowth and Wet Chemical Etching
- Effect of Internal Electric Field in Well Layer of InGaN/GaN Multiple Quantum Well Light-Emitting Diodes on Efficiency Droop
- Effect of VI/II Gas Ratio on the Epitaxial Growth of ZnO Films by Metalorganic Chemical Vapor Deposition
- Improved Light Extraction Efficiency in Blue Light-Emitting Diodes by SiO
- Improved Light Extraction Efficiency in Blue Light-Emitting Diodes by SiO₂-Coated ZnO Nanorod Arrays
- Improved Light Extraction Efficiency in Blue Light-Emitting Diodes by SiO_2-Coated ZnO Nanorod Arrays