Energy coupling processes in InGaN/GaN nanopillar light emitting diodes embedded with Ag and Ag/SiO 2 nanoparticles

Lee Woon Jang, Dae Woo Jeon, Trilochan Sahoo, Alexander Y. Polyakov, Balasubramaniam Saravanakumar, Yeon Tae Yu, Yong Hoon Cho, Jin Kyu Yang, In Hwan Lee

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Abstract

We synthesized Ag and Ag/SiO 2 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/SiO 2 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.

Original languageEnglish
Pages (from-to)21749-21753
Number of pages5
JournalJournal of Materials Chemistry
Volume22
Issue number40
DOIs
Publication statusPublished - 2012 Oct 28

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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    Jang, L. W., Jeon, D. W., Sahoo, T., Polyakov, A. Y., Saravanakumar, B., Yu, Y. T., Cho, Y. H., Yang, J. K., & Lee, I. H. (2012). Energy coupling processes in InGaN/GaN nanopillar light emitting diodes embedded with Ag and Ag/SiO 2 nanoparticles. Journal of Materials Chemistry, 22(40), 21749-21753. https://doi.org/10.1039/c2jm33759b