Comparative study on luminescence extraction strategies of LED by large-scale fabrication of nanopillar and nanohole structures

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2018专题

	Comparative study on luminescence extraction strategies of LED by large-scale fabrication of nanopillar and nanohole structures
	Ye, Jichun; Bo, Baoxue; Sun, Jie; Sheng, Jiang; Guo, Shiping; Li, Hongwei; Yang, Zhenhai; Jiang, Jie'an; Sheikh, Moheb; Li, Junmei
刊名	JOURNAL OF PHYSICS D-APPLIED PHYSICS
	2018
卷号	51 期号:24
关键词	Light-emitting-diodes Photonic Crystal-structure Multiple-quantum Wells Optical-properties Output Power Efficiency Arrays Improvement Wavelength Bandgap
英文摘要	Light extraction and current injection are two important considerations in the development of high efficiency light-emitting-diodes (LEDs), but usually cannot be satisfied simultaneously in nanostructure patterned devices. In this work, we investigated near-LW LEDs with nanopillar and nanohole patterns to improve light extraction efficiency. Photoluminescence (PL) intensities were enhanced by 8.0 and 4.1 times for nanopillar and nanohole LEDs compared to that of planar LED. Nanopillar LED exhibits higher PL emission than that of the nanohole LED, attributing to a convex shape sidewall for more effective outward light scattering, and reduction of quantum-confined-stark-effect owing to strain relaxation. However, nanopillar LED exhibits lower electroluminescence intensity than the nanohole sample, which calls for further optimization in carrier distributions. Experimental results were further supported by near-field electric field simulations. This work demonstrates the difference in optical and electrical behaviors between the nanopillar and nanohole LEDs, paving the way for detailed understanding on luminescence extraction mechanisms of nanostructure patterned UV emitters.
学科主题	Materials Science ; Physics
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17388]
专题	2018专题
推荐引用方式 GB/T 7714	Ye, Jichun,Bo, Baoxue,Sun, Jie,et al. Comparative study on luminescence extraction strategies of LED by large-scale fabrication of nanopillar and nanohole structures[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2018,51(24).
APA	Ye, Jichun.,Bo, Baoxue.,Sun, Jie.,Sheng, Jiang.,Guo, Shiping.,...&Guo, Wei.(2018).Comparative study on luminescence extraction strategies of LED by large-scale fabrication of nanopillar and nanohole structures.JOURNAL OF PHYSICS D-APPLIED PHYSICS,51(24).
MLA	Ye, Jichun,et al."Comparative study on luminescence extraction strategies of LED by large-scale fabrication of nanopillar and nanohole structures".JOURNAL OF PHYSICS D-APPLIED PHYSICS 51.24(2018).