Internal quantum efficiency enhancement of GaInN/GaN quantum-well structures using Ag nanoparticles.

Daisuke Iida, Ahmed Fadil, Yuntian Chen, Yiyu Ou, Oleksii Kopylov, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama, Isamu Akasaki, Haiyan Ou

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Abstract

We report internal quantum efficiency enhancement of thin p-GaN green quantumwell structure using self-assembled Ag nanoparticles. Temperature dependent photoluminescence measurements are conducted to determine the internal quantum efficiency. The impact of excitation power density on the enhancement factor is investigated. We obtain an internal quantum efficiency enhancement by a factor of 2.3 at 756 W/cm2 , and a factor of 8.1 at 1 W/cm2 . A Purcell enhancement up to a factor of 26 is estimated by fitting the experimental results to a theoretical model for the efficiency enhancement factor.
Original languageEnglish
Article number097169
JournalA I P Advances
Volume5
Number of pages9
ISSN2158-3226
DOIs
Publication statusPublished - 2015

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All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported license. See: http://creativecommons.org/licenses/by/3.0/

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