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

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

We report internal quantum efficiency enhancement of thin p-GaN green quantum-well 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 (US)
JournalAIP ADVANCES
Volume5
Issue number9
DOIs
StatePublished - Sep 1 2015
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • General Physics and Astronomy

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