Abstract

The energy bandgaps, reflectances, and indices of refraction of coevaporated thin films of arsenic-and antimony-triselenide and of stoichiometric and antimony-rich antimony trisulfide were determined from measurements of transmittance at wavelengths extending upward from the fundamental absorption region and reflectance at wavelengths below the absorption edge. In mixtures of As₂Se₃ and Sb₂Se₃, the optical bandgap decreases and the index of refraction increases as the ratio of Sb to As is increased. Similarly, the bandgap of antimony trisulfide decreases with the addition of excess antimony. The deduced bandgaps of evaporated As₂Se₃ and Sb₂S₃ films agree well with published values for single crystals. Dielectric constants of representative compositions were obtained from capacitance measurements.

© 1968 Optical Society of America

Optical Properties of Amorphous Selenium in the Vacuum Ultraviolet

Algird G. Leiga
J. Opt. Soc. Am. 58(11) 1441-1445 (1968)

Structure, nonlinear properties, and photosensitivity of (GeSe₂)_100-x(Sb₂Se₃)_x glasses

M. Olivier, J.C. Tchahame, P. Němec, M. Chauvet, V. Besse, C. Cassagne, G. Boudebs, G. Renversez, R. Boidin, E. Baudet, and V. Nazabal
Opt. Mater. Express 4(3) 525-540 (2014)

Effect of annealing conditions on the physio-chemical properties of spin-coated As₂Se₃ chalcogenide glass films

Yi Zou, Hongtao Lin, Okechukwu Ogbuu, Lan Li, Sylvain Danto, Spencer Novak, Jacklyn Novak, J. David Musgraves, Kathleen Richardson, and Juejun Hu
Opt. Mater. Express 2(12) 1723-1732 (2012)

Optical Properties of Tin Telluride in the Visible and Infrared Regions

R. B. Schoolar and J. R. Dixon
J. Opt. Soc. Am. 58(1) 119-125 (1968)

Optical Properties of Silicon Monoxide in the Wavelength Region from 0.24 to 14.0 Microns*

Georg Hass and Calvin D. Salzberg
J. Opt. Soc. Am. 44(3) 181-187 (1954)