Optical properties and energetic band structure of Tl3AsS3, Tl3AsSe3 and Tl3SbS3 crystals

SYRBU, N. N.; KRASOVSKY, V. T.; GITSU, D. V.; GRINCHESCHEN, I. N.

Optical properties and energetic band structure of Tl3AsS3, Tl3AsSe3 and Tl3SbS3 crystals

SYRBU, N. N.; KRASOVSKY, V. T.; GITSU, D. V.; GRINCHESCHEN, I. N.

URI: https://doi.org/10.1016/0921-4526(94)00919-M
http://repository.utm.md/handle/5014/12368

Date: 1995

Abstract:

Fundamental absorption edge spectra and reflectivity spectra of TlaAsS3, T13AsSe3 and TlaSbS 3 crystals have been investigated in the range 1-6 eV at 300 and 77 K. Polarization dependences of three excitonic series ground states have been found in TlaAsS 3 and TI3SbS3 crystals. The energetic band structure of these crystals has been built on the basis of experimental reflectivity spectra and theoretical band calculations for crystals of C53v group.