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Photoluminescence Of Zincselenide Single Crystals Annealed In Zinc Or Selenium Atmosphere

Published online by Cambridge University Press:  21 February 2011

Kenji Yoshino ,
Yasushi Matsushima ,
Hiroyoshi Kinoshita  and
Makoto Hiramatsu
Kenji Yoshino
Affiliation:
College of Liberal Arts and Sciences, Okayama University, 2-1-1 Tsushima-naka, Okayama, 700, Japan
Yasushi Matsushima
Affiliation:
College of Liberal Arts and Sciences, Okayama University, 2-1-1 Tsushima-naka, Okayama, 700, Japan
Hiroyoshi Kinoshita
Affiliation:
College of Liberal Arts and Sciences, Okayama University, 2-1-1 Tsushima-naka, Okayama, 700, Japan
Makoto Hiramatsu
Affiliation:
College of Liberal Arts and Sciences, Okayama University, 2-1-1 Tsushima-naka, Okayama, 700, Japan
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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 Sc-vacancies affect the bandgap energy more than Zn-vacancies do.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 348 , 1994 , 533
Copyright
Copyright © Materials Research Society 1994

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References

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