Efficiency improvement of the light-emitting diodes by the lateral overgrowth GaN on an AlN nanorod template

Wen Yi Lan, Yu Feng Yin, Chen Hung Tsai, Mu Xin Ma, Hsiang Wei Li, Wei Chi Lai, Jianjang Huang

研究成果: Conference contribution

摘要

With the rapid development of GaN light-emitting diodes (LEDs), LEDs have been utilized in various ways. However, the quality of the GaN epi-structure has been a popular topic. In order to achieve higher internal quantum efficiency (IQE), LEDs have to be made with few defects during the epitaxy growth. Here we propose an AlN nanorod template grown on the sapphire substrate by vapor-liquid-solid (VLS) method. The voids near the AlN nanorods indicate a modification of dislocation with a lateral overgrowth. A strain relaxation and a better IQE in the epi-layer are observed in the Raman spectroscopy and temperature-dependent photoluminescence (PL). As a result, the IQE of the device with the proposed AlN nanorod template is increased 12.2% as compared with the reference sample without AlN nanorods.

原文English
主出版物標題Fourteenth International Conference on Solid State Lighting and LED-Based Illumination Systems
編輯Nikolaus Dietz, Jian-Jang Huang, Matthew H. Kane, Jianzhong Jiao
發行者SPIE
ISBN(電子)9781628417371
DOIs
出版狀態Published - 2015
事件14th International Conference on Solid State Lighting and LED-Based Illumination Systems - San Diego, United States
持續時間: 2015 八月 122015 八月 13

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
9571
ISSN(列印)0277-786X
ISSN(電子)1996-756X

Other

Other14th International Conference on Solid State Lighting and LED-Based Illumination Systems
國家United States
城市San Diego
期間15-08-1215-08-13

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

指紋 深入研究「Efficiency improvement of the light-emitting diodes by the lateral overgrowth GaN on an AlN nanorod template」主題。共同形成了獨特的指紋。

引用此