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Refractive index, static dielectric constant, energy band gap and oscillator parameters of Ga2SeS single crystals

✍ Scribed by Qasrawi, A. F. ;Gasanly, N. M.

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
202 KB
Volume
204
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

The optical properties of Bridgman method grown Ga~2~SeS crystals have been investigated by means of room‐temperature transmittance and reflectance spectral analysis. The optical data have revealed direct and indirect allowed transition band gaps of 2.49 and 2.10 eV, respectively. The room‐temperature refractive index, which was calculated from the reflectance and transmittance data, allowed the identification of the dispersion and oscillator energies, static dielectric constant and static refractive index as 20.93 eV and 4.01 eV, 6.21 and 2.49, respectively. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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