Resonance impurity radiation in CuGaS2 crystals

SYRBU, N. N.; NEMERENCO, L. L.; TEZLEVAN, V. E.

Resonance impurity radiation in CuGaS2 crystals

SYRBU, N. N.; NEMERENCO, L. L.; TEZLEVAN, V. E.

URI: https://doi.org/10.1016/j.optmat.2006.12.002
http://repository.utm.md/handle/5014/12387

Date: 2007

Abstract:

In this work the reflectivity spectra of the CuGaS2 crystals have been investigated in the EIIc polarization and the absorption spectra were studied in the E⊥c polarization at the 10K. The parameters of the excitons and the band gaps have been determined. The low temperature (10K) luminescence spectra of the CuGaS2 crystals have been investigated under the excitation by 4880Å and 4965Å Ar+ laser lines. A model of optic transitions between the levels of excitons bound on neutral donor is proposed.