Effects of The Thickness of p-type GaN on Light Extraction of GaN Based Vertical Light Emitting Diodes on Silicon Substrate

TAO Xi-xia; WANG Li; LIU Yan-Song; WANG Guang-xu; JIANG Feng-yi

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Effects of The Thickness of p-type GaN on Light Extraction of GaN Based Vertical Light Emitting Diodes on Silicon Substrate

paper | 更新时间：2020-08-12

- Effects of The Thickness of p-type GaN on Light Extraction of GaN Based Vertical Light Emitting Diodes on Silicon Substrate
- Chinese Journal of Luminescence Vol. 32, Issue 10, Pages: 1069-1073(2011)
- 作者机构：
  
  南昌大学国家硅基LED工程技术研究中心,江西南昌,330047
- 作者简介：
- 基金信息：
  
  863"
- DOI：
  CLC： TN312+.8
- Received：28 June 2011，
  
  Revised：03 August 2011，
  
  Published Online：22 October 2011，
  
  Published：22 October 2011
- 稿件说明：
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陶喜霞, 王立, 刘彦松, 王光绪, 江风益. p层厚度对Si基GaN垂直结构LED出光的影响[J]. 发光学报, 2011,32(10): 1069-1073

TAO Xi-xia, WANG Li, LIU Yan-Song, WANG Guang-xu, JIANG Feng-yi. Effects of The Thickness of p-type GaN on Light Extraction of GaN Based Vertical Light Emitting Diodes on Silicon Substrate[J]. Chinese Journal of Luminescence, 2011,32(10): 1069-1073
陶喜霞, 王立, 刘彦松, 王光绪, 江风益. p层厚度对Si基GaN垂直结构LED出光的影响[J]. 发光学报, 2011,32(10): 1069-1073 DOI：

TAO Xi-xia, WANG Li, LIU Yan-Song, WANG Guang-xu, JIANG Feng-yi. Effects of The Thickness of p-type GaN on Light Extraction of GaN Based Vertical Light Emitting Diodes on Silicon Substrate[J]. Chinese Journal of Luminescence, 2011,32(10): 1069-1073 DOI：

摘要

利用金属有机化学气相沉积(MOCVD)法在Si衬底上生长了一系列具有不同p层厚度

的InGaN/GaN蓝光LED薄膜并制备成垂直结构发光二极管(VLEDs)

研究了p层厚度即p面金属反射镜与量子阱层的间距对LED出光效率的影响

并采用F-P干涉模型进行了理论分析。结果显示

光提取效率受

影响很大

随

的增加呈现类似阻尼振动的变化趋势

分别在0.73

处和 1.01

处取得第一个极大值和极小值

且前者是后者两倍多。因此优化p层厚度可以有效提高LED的出光效率。

Abstract

The relationship between the thickness

of p-type GaN and light extraction efficiency of GaN based vertical light emitting diodes (VLEDs) was described in this work. The VLEDs were grown on silicon by metal organic chemical vapour deposition (MOCVD). A series of VLEDs were fabricated with varied thickness of p-type GaN. It showed that the thickness

was in the order of wavelength and it had a significant influence on extraction efficiency due to interferences. The maximum in extraction efficiency was two times more than the neighboring minimum

which were located at 0.73

and 1.01

respectively. Therefore

the extraction efficiency of VLEDs can be enhanced by optimizing the thickness of p-type GaN.

关键词

Keywords

references

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