Evidence of quantum dot-like nano-objects in InGaN quantum wells provided by narrow photoluminescence spectra from localized exciton

H. Gotoh, T. Akasaka, T. Tawara, Y. Kobayashi, T. Makimoto, H. Nakano

Research output: Contribution to journalConference article


We report on narrow photoluminescence (PL) spectra obtained from spatially localized excitons in InGaN quantum wells (QW). These PL lines (less than 1 meV wide) are clearly detected in QWs on several buffer structures and substrates with the micro-PL technique in low temperature regions. A narrow PL spectrum is one of the characteristics of an exciton confined in a quantum dot (QD). Our results directly confirm that QD-like nano-objects exist in InGaN QWs.

Original languageEnglish
Pages (from-to)2350-2353
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Issue number7
Publication statusPublished - 2007 Dec 1
EventInternational Workshop on Nitride Semiconductors, IWN 2006 - Kyoto, Japan
Duration: 2006 Oct 222006 Oct 27


ASJC Scopus subject areas

  • Condensed Matter Physics

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