Time-resolved photoluminescence spectra of high-density InGaAs/AlGaAs quantum wire structures

Noriaki Tsurumachi, Chang Sik Son, Tae Geun Kim, Kazunori Hikosaka, Kazuhiro Komori, Mutsuo Ogura

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

We investigated the temperature dependence of the time-resolved photoluminescence (PL) spectra of high-density InGaAs/AlGaAs quantum wire (QWR) distributed-feedback laser structure on a submicron grating. A red-shift of peak in the time-resolved PL after photo-excitation was observed due to the relaxation of the photo-generated excitons from the entire QWR to localized centers at 10 K. On the other hand, at 60 K, no red-shift in the time-resolved PL spectra was observed since the localization centers are thermally activated and the excitons are delocalized.

Original languageEnglish
Pages (from-to)300-303
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume21
Issue number2-4
DOIs
Publication statusPublished - 2004 Mar
EventProceedings of the Eleventh International Conference on Modulation (MSS11) - Nara, Japan
Duration: 2003 Jul 142003 Jul 18

Keywords

  • Localized exciton
  • Quantum wire
  • Time-resolved Photoluminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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