Light Extraction Efficiency Optimization of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes | |
H. Wan,S. J. Zhou,S. Y. Lan and C. Q. Gui | |
刊名 | Ecs Journal of Solid State Science and Technology |
2020 | |
卷号 | 9期号:4页码:5 |
ISSN号 | 2162-8769 |
DOI | 10.1149/2162-8777/ab85c0 |
英文摘要 | Using finite-difference time-domain method, the light extraction efficiency (LEE) of AlGaN-based deep-ultraviolet light-emitting diodes (DUV LEDs) is investigated. Simulation results show that compared to flat sapphire substrate, the nano-patterned sapphire substrate (NPSS) expands the extraction angles of top surface and sidewalls. As a result, the LEE of transverse-magnetic (TM) polarized light is improved significantly. Roughening on the backside of n-AlGaN surface significantly enhances the LEE of top surface of thin-film flip-chip DUV LEDs. However, the LEE of sidewalls of thin-film flip-chip DUV LEDs is greatly weakened. For bare DUV LED, the LEE of flip-chip LED on NPSS is estimated to be about 15%, which is around 50% higher than that of thin-film flip-chip DUV LED with roughening on the backside of n-AlGaN surface. (C) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited. |
URL标识 | 查看原文 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.ciomp.ac.cn/handle/181722/64648] |
专题 | 中国科学院长春光学精密机械与物理研究所 |
推荐引用方式 GB/T 7714 | H. Wan,S. J. Zhou,S. Y. Lan and C. Q. Gui. Light Extraction Efficiency Optimization of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes[J]. Ecs Journal of Solid State Science and Technology,2020,9(4):5. |
APA | H. Wan,S. J. Zhou,S. Y. Lan and C. Q. Gui.(2020).Light Extraction Efficiency Optimization of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes.Ecs Journal of Solid State Science and Technology,9(4),5. |
MLA | H. Wan,S. J. Zhou,S. Y. Lan and C. Q. Gui."Light Extraction Efficiency Optimization of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes".Ecs Journal of Solid State Science and Technology 9.4(2020):5. |
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