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.
|Number of pages||4|
|Journal||Physica Status Solidi (C) Current Topics in Solid State Physics|
|Publication status||Published - 2007 Dec 1|
|Event||International Workshop on Nitride Semiconductors, IWN 2006 - Kyoto, Japan|
Duration: 2006 Oct 22 → 2006 Oct 27
ASJC Scopus subject areas
- Condensed Matter Physics