Issue 40, 2012
From the journal:

Journal of Materials Chemistry

Energy coupling processes in InGaN/GaN nanopillar light emitting diodes embedded with Ag and Ag/SiO2nanoparticles

Lee-Woon Jang,a   Dae-Woo Jeon,a   Trilochan Sahoo,a   Alexander Y. Polyakov,a   Balasubramaniam Saravanakumar,a   Yeon-Tae Yu,a   Yong-Hoon Cho,b   Jin-Kyu Yangc  and  In-Hwan Lee*a  

* Corresponding authors

a School of Advanced Materials Engineering and Research Center of Advanced Materials Development, Chonbuk National University, Jeonju 561-756, Korea
E-mail: ihlee@jbnu.ac.kr
Fax: +81-63-270-2305
Tel: + 82-63-270-2290

b Department of Physics, KAIST, Daejeon 305-701, Korea

c Department of Optical Engineering, Kongju National University, Kongju, Chungnam 314-701, Korea

Abstract

We synthesized Ag and Ag/SiO2 nanoparticles (NPs) and investigated the energy coupling processes between the localized surface plasmons of NPs and the active quantum well regions of nanopillar light-emitting diodes (LEDs). Nanopillar LEDs embedded with Ag NPs exhibited a decreased photoluminescence (PL) intensity, while the PL was markedly enhanced for Ag/SiO2 NP embedded nanopillar LEDs. Though the PL decay times decreased in both cases compared to the sample without NPs, the difference in observed optical behavior suggests that different types of energy coupling (EC) are involved.

Graphical abstract: Energy coupling processes in InGaN/GaN nanopillar light emitting diodes embedded with Ag and Ag/SiO2 nanoparticles

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Article information

DOI
https://doi.org/10.1039/C2JM33759B
Article type
Paper
Submitted
12 Jun 2012
Accepted
31 Aug 2012
First published
31 Aug 2012

J. Mater. Chem., 2012,22, 21749-21753

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Energy coupling processes in InGaN/GaN nanopillar light emitting diodes embedded with Ag and Ag/SiO2 nanoparticles

L. Jang, D. Jeon, T. Sahoo, A. Y. Polyakov, B. Saravanakumar, Y. Yu, Y. Cho, J. Yang and I. Lee, J. Mater. Chem., 2012, 22, 21749 DOI: 10.1039/C2JM33759B

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