The optical and holographic characteristics of amorphous As _100-xSe_x, As₂Se₃:Sn and Sb ₂Se₃:Sn prepared by vacuum evaporation on glass substrates are investigated. From the transmission spectra the changes of the refractive index under the light irradiation and heat treatment are calculated. . The band gap for amorphous Sb₂Se₃ was found to be E _g=1.30 eV and decrease with increasing of the tin concentration up to E_g=1.0 eV for Sb₂Se₃:Sn_10.0. The kinetics of photoinduced absorption and holographic recording in the investigated thin films was studied. The compositional and thickness dependences of the light induced optical parameters are determinate. The modifications of the refractive index under the light irradiation make these materials suitable for registration of optical and holographic information.