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Optimization of the electrode shape of AlGaInP LED

Zhang Jun-Bing Zeng Xiang-Hua Lin Yue-Ming Bo Lin

Optimization of the electrode shape of AlGaInP LED

Zhang Jun-Bing, Zeng Xiang-Hua, Lin Yue-Ming, Bo Lin
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  • Abstract views:  3830
  • PDF Downloads:  1566
  • Cited By: 0
Publishing process
  • Received Date:  01 January 2008
  • Accepted Date:  21 February 2008
  • Published Online:  20 September 2008

Optimization of the electrode shape of AlGaInP LED

  • 1. (1)扬州大学物理科学与技术学院,扬州 225002; (2)扬州华夏集成光电有限公司,扬州 225009

Abstract: The distribution of current diffusion of the quaternary AlGaInP LED has been simulated by finite element method to study the effect of electrode shape on the current spreading layer GaP. By comparing traditional circular-shape with cross-shape, arrow-shape, floriated-shape and gammadion-shape electrodes, we found that the electrode shape has an important effect on the output efficiency of light, and the light extraction efficiency of gammadion electrode is the highest. As the area of the whole electrode has an effect on the output efficiency, by optimizing the width of the electrode, the light extraction efficiency will be upgraded. For the gammadion electrode, when the width equals to 6.2204 μm, its light extraction efficiency is the highest, which is more than twice that of the traditional round electrode’s.

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