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, Toshiki Makimoto, H. Nakano

Research output: Contribution to journalArticle

Abstract

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
Volume4
Issue number7
DOIs
Publication statusPublished - 2007
Externally publishedYes

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quantum dots
excitons
quantum wells
photoluminescence
buffers

ASJC Scopus subject areas

  • Condensed Matter Physics

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Evidence of quantum dot-like nano-objects in InGaN quantum wells provided by narrow photoluminescence spectra from localized exciton. / Gotoh, H.; Akasaka, T.; Tawara, T.; Kobayashi, Y.; Makimoto, Toshiki; Nakano, H.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 4, No. 7, 2007, p. 2350-2353.

Research output: Contribution to journalArticle

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AU - Gotoh, H.

AU - Akasaka, T.

AU - Tawara, T.

AU - Kobayashi, Y.

AU - Makimoto, Toshiki

AU - Nakano, H.

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