Submicron-Scale Photoluminescence of InGaN/GaN Probed by Confocal Scanning Laser Microscopy

Koichi Okamoto, Jungkwon Choi, Yoichi Kawakami, Masahide Terazima, Takashi Mukai, Shigeo Fujita

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Confocal scanning laser microscopy was used for the first time to obtain the submicron-scale photoluminescence (PL) of InGaN/GaN single quantum wells (SQWs). We found island-shaped spatial inhomogeneities of both PL intensities and spectra as small as 100-200 nm. The spatial resolution of the obtained PL images was much smaller than the diffusion length of carriers in active layers at room temperature.

Original languageEnglish
Pages (from-to)839-840
Number of pages2
JournalJapanese Journal of Applied Physics
Issue number2
Publication statusPublished - Feb 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy


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