Enhanced radiative recombination and suppressed Auger process in semipolar and nonpolar InGaN/GaN quantum wells grown over GaN nanowires

Guanjun You; Jie Liu; Zhenyu Jiang; Li Wang; N. A. El-Masry; A. M. Hosalli; Salah M. Bedair; Jian Xu

doi:10.1364/OL.39.001501

Enhanced radiative recombination and suppressed Auger process in semipolar and nonpolar InGaN/GaN quantum wells grown over GaN nanowires

Guanjun You
, Jie Liu
, Zhenyu Jiang
, Li Wang
, N. A. El-Masry
, A. M. Hosalli
, Salah M. Bedair
, Jian Xu

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The mechanism behind the improved light emission properties of semipolar and nonpolar InGaN/GaN multiple quantum wells (MQWs) conformally grown over n-GaN nanowires (NWs) was studied using variable-temperature photoluminescence and time-resolved photoluminescence (TRPL). A reduced internal polarization electric field was found to account for the observed enhancement in the radiative recombination rate and internal quantum efficiency of the MQWs on NWs. Additionally, the excitation-dependent TRPL results indicate a significantly depressed Auger recombination in MQWs grown on NWs that can be attributed to the feature of ultralow dislocation density of the MQWs grown over GaN nanostructures.

Original language	English (US)
Pages (from-to)	1501-1504
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	6
DOIs	https://doi.org/10.1364/OL.39.001501
State	Published - Mar 15 2014

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OL.39.001501

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title = "Enhanced radiative recombination and suppressed Auger process in semipolar and nonpolar InGaN/GaN quantum wells grown over GaN nanowires",

abstract = "The mechanism behind the improved light emission properties of semipolar and nonpolar InGaN/GaN multiple quantum wells (MQWs) conformally grown over n-GaN nanowires (NWs) was studied using variable-temperature photoluminescence and time-resolved photoluminescence (TRPL). A reduced internal polarization electric field was found to account for the observed enhancement in the radiative recombination rate and internal quantum efficiency of the MQWs on NWs. Additionally, the excitation-dependent TRPL results indicate a significantly depressed Auger recombination in MQWs grown on NWs that can be attributed to the feature of ultralow dislocation density of the MQWs grown over GaN nanostructures.",

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doi = "10.1364/OL.39.001501",

language = "English (US)",

volume = "39",

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TY - JOUR

T1 - Enhanced radiative recombination and suppressed Auger process in semipolar and nonpolar InGaN/GaN quantum wells grown over GaN nanowires

AU - You, Guanjun

AU - Liu, Jie

AU - Jiang, Zhenyu

AU - Wang, Li

AU - El-Masry, N. A.

AU - Hosalli, A. M.

AU - Bedair, Salah M.

AU - Xu, Jian

PY - 2014/3/15

Y1 - 2014/3/15

N2 - The mechanism behind the improved light emission properties of semipolar and nonpolar InGaN/GaN multiple quantum wells (MQWs) conformally grown over n-GaN nanowires (NWs) was studied using variable-temperature photoluminescence and time-resolved photoluminescence (TRPL). A reduced internal polarization electric field was found to account for the observed enhancement in the radiative recombination rate and internal quantum efficiency of the MQWs on NWs. Additionally, the excitation-dependent TRPL results indicate a significantly depressed Auger recombination in MQWs grown on NWs that can be attributed to the feature of ultralow dislocation density of the MQWs grown over GaN nanostructures.

AB - The mechanism behind the improved light emission properties of semipolar and nonpolar InGaN/GaN multiple quantum wells (MQWs) conformally grown over n-GaN nanowires (NWs) was studied using variable-temperature photoluminescence and time-resolved photoluminescence (TRPL). A reduced internal polarization electric field was found to account for the observed enhancement in the radiative recombination rate and internal quantum efficiency of the MQWs on NWs. Additionally, the excitation-dependent TRPL results indicate a significantly depressed Auger recombination in MQWs grown on NWs that can be attributed to the feature of ultralow dislocation density of the MQWs grown over GaN nanostructures.

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UR - https://www.scopus.com/pages/publications/84897460380#tab=citedBy

U2 - 10.1364/OL.39.001501

DO - 10.1364/OL.39.001501

M3 - Article

AN - SCOPUS:84897460380

SN - 0146-9592

VL - 39

SP - 1501

EP - 1504

JO - Optics Letters

JF - Optics Letters

IS - 6

ER -

Enhanced radiative recombination and suppressed Auger process in semipolar and nonpolar InGaN/GaN quantum wells grown over GaN nanowires

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