· Compositional dependences of optical parameters in Cu-As-S thin films have demonstrated decrease of the energy pseudogap and increase in the Urbach energy with the copper content increase.
· Influence of disordering processes on optical properties of Cu-As-S thin films is mainly defined by the influence of compositional disordering caused by the increase of copper content.
Semiconductor Physics, Quantum Electronics & Optoelectronics, 21 (2), P. 167-172 (2018).
Deposition and optical absorption studies of Cuâ€“Asâ€“S thin films
1Faculty of Physics, Uzhhorod National University, 3, Narodna Sq., 88000 Uzhhorod, Ukraine,
Abstract. Cuâ€“Asâ€“S thin films were deposited using the thermal evaporation technique. Optical transmission spectra of Cu 0.1 As 2.1 S 3.1 thin films were measured within the temperature range 77...300 K. Temperature behaviour of absorption edge inherent to Cu 0.1 As 2.1 S 3.1 thin films was studied. Temperature and compositional dependences of optical parameters in Cuâ€“Asâ€“S thin films have been analyzed. It has been revealed that the energy pseudogap decrease and Urbach energy increase with the copper content increase take place in Cuâ€“Asâ€“S thin films. The influence of or
Keywords: thin film, thermal evaporation, optical absorption, energy pseudogap, Urbach energy.
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.