Photoluminescence of zincselenide single crystals annealed in zinc or selenium atmosphere

Kenji Yoshino, Yasushi Matsushima, Hiroyoshi Kinoshita, Makoto Hiramatsu

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

Zincselenide single crystals grown by the sublimation method are annealed in Zn or Se atmosphere. The annealing effects are examined by means of photoluminescence (PL) and reflection spectroscopy at 4.2 K. In the PL spectrum for the as-grown crystal, bound exciton lines (I2, I1) are observed. For the Zn-annealed crystal, the free exciton line is clearly observed. For the Se-annealed crystal, peak positions of all lines shift to the higher energies and all lines become sharp, compared with the spectra for the as-grown crystal. It is concluded that Se-vacancies affect the bandgap energy more than Zn-vacancies do.

Original languageEnglish
Pages (from-to)533-538
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume348
Publication statusPublished - Dec 1 1994
EventProceedings of the 1994 MRS Spring Meeting - San Francisco, CA, USA
Duration: Apr 4 1994Apr 8 1994

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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