Far infrared optical study of CdInGaS4, HgInGaS4 and CdIn2S2Se2 crystals

N. N. Syrbu

doi:10.1117/12.2299052

1 September 1996 Far infrared optical study of CdInGaS₄, HgInGaS₄ and CdIn₂S₂Se₂ crystals

N. N. Syrbu

Proceedings Volume 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology; 27784P (1996) https://doi.org/10.1117/12.2299052
Event: 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 1996, Taejon, Korea, Republic of

Abstract

The infrared reflectivity spectra in the range from 50 to 4000cm^-1 of the CdInGaS₄, CdIn₂S₄, HgInGaS₄ and CdIn₂S₂Se₂ crystals have been investigated. The fundamental phonon parameters, the limiting dielectric constants ε_o and ε_∞ and the reflectivity spectrum contours have been calculated using classical dispersion relations. The values of parameters obtained from the fitting procedure are listed in the table. It is shown, that the replacement of an anion (In by Ga) leads to appearance of additional vibrational mode caused by dynamics of Ga-S molecules.

Citation Download Citation

N. N. Syrbu "Far infrared optical study of CdInGaS₄, HgInGaS₄ and CdIn₂S₂Se₂ crystals", Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 27784P (1 September 1996); https://doi.org/10.1117/12.2299052

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