Localized surface plasmon enhanced quantum efficiency of InGaN/GaN quantum wells by Ag/SiO 2 nanoparticles

Lee Woon Jang, Dae Woo Jeon, Trilochan Sahoo, Dong Seob Jo, Jin Woo Ju, Seung Jae Lee, Jong Hyeob Baek, Jin Kyu Yang, Jung Hoon Song, Alexander Y. Polyakov, In-Hwan Lee

Research output: Contribution to journalArticle

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Abstract

Optical properties of InGaN/GaN multi-quantum-well (MQW) structures with a nanolayer of Ag/SiO 2 nanoparticle (NP) on top were studied. Modeling and optical absorption (OA) measurements prove that the NPs form localized surface plasmons (LSP) structure with a broad OA band peaked near 440-460 nm and the fringe electric field extending down to about 10 nm into the GaN layer. The presence of this NP LSP electrical field increases the photoluminescence (PL) intensity of the MQW structure by about 70% and markedly decreases the time-resolved PL (TRPL) relaxation time due to the strong coupling of MQW emission to the LSP mode.

Original languageEnglish
Pages (from-to)2116-2123
Number of pages8
JournalOptics Express
Volume20
Issue number3
DOIs
Publication statusPublished - 2012 Jan 30
Externally publishedYes

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plasmons
quantum efficiency
quantum wells
nanoparticles
optical absorption
photoluminescence
relaxation time
absorption spectra
optical properties
electric fields

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Localized surface plasmon enhanced quantum efficiency of InGaN/GaN quantum wells by Ag/SiO 2 nanoparticles . / Jang, Lee Woon; Jeon, Dae Woo; Sahoo, Trilochan; Jo, Dong Seob; Ju, Jin Woo; Lee, Seung Jae; Baek, Jong Hyeob; Yang, Jin Kyu; Song, Jung Hoon; Polyakov, Alexander Y.; Lee, In-Hwan.

In: Optics Express, Vol. 20, No. 3, 30.01.2012, p. 2116-2123.

Research output: Contribution to journalArticle

Jang, LW, Jeon, DW, Sahoo, T, Jo, DS, Ju, JW, Lee, SJ, Baek, JH, Yang, JK, Song, JH, Polyakov, AY & Lee, I-H 2012, ' Localized surface plasmon enhanced quantum efficiency of InGaN/GaN quantum wells by Ag/SiO 2 nanoparticles ', Optics Express, vol. 20, no. 3, pp. 2116-2123. https://doi.org/10.1364/OE.20.002116
Jang, Lee Woon ; Jeon, Dae Woo ; Sahoo, Trilochan ; Jo, Dong Seob ; Ju, Jin Woo ; Lee, Seung Jae ; Baek, Jong Hyeob ; Yang, Jin Kyu ; Song, Jung Hoon ; Polyakov, Alexander Y. ; Lee, In-Hwan. / Localized surface plasmon enhanced quantum efficiency of InGaN/GaN quantum wells by Ag/SiO 2 nanoparticles In: Optics Express. 2012 ; Vol. 20, No. 3. pp. 2116-2123.
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AU - Ju, Jin Woo

AU - Lee, Seung Jae

AU - Baek, Jong Hyeob

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AU - Polyakov, Alexander Y.

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