Investigation on the performance and efficiency droop behaviors of InGaN/GaN multiple quantum well green LEDs with various GaN cap layer thicknesses

CORC > 苏州纳米技术与纳米仿生研究所 > 中国科学院苏州纳米技术与纳米仿生研究所 > 纳米器件及相关材料研究部 > 刘建平团队

	Investigation on the performance and efficiency droop behaviors of InGaN/GaN multiple quantum well green LEDs with various GaN cap layer thicknesses
	Yang, J; Zhao, DG; Jiang, DS; Chen, P; Zhu, JJ; Liu, ZS; Le, LC; He, XG; Li, XJ; Liu, JP(刘建平)
刊名	VACUUM
	2016
卷号	129
通讯作者	Zhao, DG
英文摘要	The performance and efficiency droop behaviors of InGaN/GaN multiple quantum well (MQW) green LEDs with various low temperature grown GaN cap (LT-cap) layer are investigated. It is found that the output power increases when a thin LT-cap layer (0.37 nm) is inserted and it decreases as the LT-cap layer thickness increases up to 1.5 nm. In addition, the apparent efficiency droop decreases when the thickness of LT-cap layer increases from 0 to 1.5 nm. However, the related physical mechanisms are different. When the relatively thin LT-cap layers are inserted, the carrier confinement effect of QWs enhances due to the increased In content of InGaN QWs. In this case, electrons are hardly to escape from MQW region to pGaN region, which results in a relatively high output power at high injection current, thus a small efficiency droop is obtained. However, when the LT-cap layer thickness is relatively thick, due to the large defect density of InGaN/GaN MQWs, although the small efficiency droop also can be observed, the relatively low output power is obtained at all injection currents. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000377313500015
内容类型	期刊论文
源URL	[http://ir.sinano.ac.cn/handle/332007/4599]
专题	苏州纳米技术与纳米仿生研究所_纳米器件及相关材料研究部_刘建平团队
推荐引用方式 GB/T 7714	Yang, J,Zhao, DG,Jiang, DS,et al. Investigation on the performance and efficiency droop behaviors of InGaN/GaN multiple quantum well green LEDs with various GaN cap layer thicknesses[J]. VACUUM,2016,129.
APA	Yang, J.,Zhao, DG.,Jiang, DS.,Chen, P.,Zhu, JJ.,...&Yang, H.(2016).Investigation on the performance and efficiency droop behaviors of InGaN/GaN multiple quantum well green LEDs with various GaN cap layer thicknesses.VACUUM,129.
MLA	Yang, J,et al."Investigation on the performance and efficiency droop behaviors of InGaN/GaN multiple quantum well green LEDs with various GaN cap layer thicknesses".VACUUM 129(2016).