Photoluminescence study of InAs quantum dots and quantum dashes grown on GaAs(211)B

Shiping Guo, Hideo Ohno, Aidong Shen, Yuzo Ohno, Fumihiro Matsukura

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

InAs self-organized quantum dots (QDs) and quantum dashes (QDHs) were grown by molecular beam epitaxy on GaAs (211)B substrates. QDs with bimodal size distribution were formed at lower growth temperatures, whereas QDHs were observed at higher growth temperatures. Photoluminescence (PL) intensity and peak position of QDs and QDHs showed similar temperature dependence, whereas the excitation density dependence of the PL peak intensity and the PL peak energy of the two nanostructures was different. The blue shift in QDH peak energy with the increase of the excitation density is suggested to be due to the existence of the piezoelectric field in InAs QDHs.

Original languageEnglish
Pages (from-to)1527-1531
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number3 SUPPL. B
DOIs
Publication statusPublished - 1998 Mar

Keywords

  • Blue-shift
  • Gaas (211)b
  • Molecular beam epitaxy
  • Photoluminescence
  • Quantum dashes
  • Quantum dots

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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