The complex array sapphire structure on the LED overall light extraction efficiency

• Main Authors: Chun-hsien Liu, 劉俊賢
• Other Authors: Zong-shen Chang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/j428f9

碩士 === 國立中央大學 === 光電科學與工程學系 === 102 === The study discusses about the complex array and sapphire structure on the LED in an overall light extraction efficiency. The study composed of experiments and analyses. I came out with three experiments. 1. If there are presence of photos or not, it will increase it's lights. 2.The amount of lightness between submicron and micron structure. 3.The width and height of submicron and how does it influence light extraction efficiency. In order to know about these experiments' results, I use chips from nano-imprint and dry etching, and I want to increase the reliability of the result of the experiment, so I will separate the chips to two batch of epitaxy. In each group, I distributed five chips. Experiment 1: The chip with a photo increase it's light 59% up to 87%. Experiment 2: Light in submicron is so higher than in micron by 10% to 18%. Experiment 3: The biggest width and height of the chips are better than the smallest one, more than 3% to 5%.