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Proceedings Paper

Optical properties of As2S3 and As2Se3 glasses doped with Dy, Sm, and Mn
Author(s): Andrei M. Andriesh; Mihai S. Iovu; Sergiu D. Shutov; Angela B. Seddon; David Furniss; Mihai A. Popescu
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Paper Abstract

The effect of low amounts of dysprosium, samarium and manganese (0.1-0.5 at.%) on structure and optical properties of chalcogenide glassy semiconductors As2S3 and As2Se3 is investigated. The fundamental absorption edge shifts to longer wavelength with doping; the largest shift was observed for As2S3 glasses doped with Dy and Mn. A correlation of the properties with medium range order and electronegativity of impurity atoms was revealed. Photodarkening relaxation under light exposure of a-As2Se3 amorphous films doped with 0.5 at.% of metals Sn, Mn, Sm and Dy was studied in dependence on the impurity and thermal treating. Both factors reduce photodarkening and the degree of reduction depends on the sort of impurity. The relaxation process may be described by a stretched exponential with the dispersive parameter 0.5

Paper Details

Date Published: 29 June 2001
PDF: 12 pages
Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); doi: 10.1117/12.432868
Show Author Affiliations
Andrei M. Andriesh, Ctr. of Optoelectronics (Moldova)
Mihai S. Iovu, Ctr. of Optoelectronics (Moldova)
Sergiu D. Shutov, Ctr. of Optoelectronics (Moldova)
Angela B. Seddon, Univ. of Nottingham (United Kingdom)
David Furniss, Univ. of Nottingham (United Kingdom)
Mihai A. Popescu, National Institute for Research in Physics of Materials (Romania)

Published in SPIE Proceedings Vol. 4430:
ROMOPTO 2000: Sixth Conference on Optics
Valentin I. Vlad, Editor(s)

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