Growth, crystal structure and optical properties of CdTe_1–xSe_x thin films prepared by quasi close-space sublimation method

Abstract

Recently, thin films of solid solution CdTe_1-xSe_x are of interest as a material that can be used to improve CdTe-based solar panels. In this article, we study the optical characteristics of CdTe_{1 – x}Se_x films obtained by the quasi close-space sublimation method was carried out. Phase analysis and crystal structure were studied by X-ray diffraction. The spectral distributions of the transmission and reflection coefficients of the films are obtained and their bandgap is calculated. The absorption coefficient α(λ) and the extinction coefficient k(λ) as a function of wavelength for CdTe_{1 – x}Se_x films is calculated.

Keywords:

• Absorption
• reflection
• thin films
• transmission

Additional information

Funding

The work was supported by the Project 0119U002247 of Ministry of Education and Science of Ukraine.