Optical constants and parameters of Urbach absorption edge for x-ray irradiated (Ga0.3In0.7)2Se3 films

Ihor P. Studenyak; Mykhaylo M. Pop; Mladen Kranjčec; Andriy M. Solomon; Nataliia V. Titova; Elena M. Sorochan; Paweł Komada; Indira Shedreyeva; Gayni Karnakova

doi:10.1117/12.2607827

3 November 2021 Optical constants and parameters of Urbach absorption edge for x-ray irradiated (Ga_0.3In_0.7)₂Se₃ films

Ihor P. Studenyak, Mykhaylo M. Pop, Mladen Kranjčec, Andriy M. Solomon, Nataliia V. Titova, Elena M. Sorochan, Paweł Komada, Indira Shedreyeva, Gayni Karnakova

Author Affiliations +

Proceedings Volume 12040, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2021; 1204004 (2021) https://doi.org/10.1117/12.2607827
Event: Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2021 (WILGA 2021), 2021, Warsaw, Poland

Abstract

(Ga_0.3In_0.7)₂Se₃ films were deposited by the thermal evaporation technique. As-deposited (Ga_0.3In_0.7)₂Se₃ films were irradiated using wideband radiation of Cu-anode X-ray tube at different exposure times. The spectral dependences of refractive index and extinction coefficient were measured by the spectral ellipsometry technique. The optical transmission spectra of X-ray irradiated (Ga_0.3In_0.7)₂Se₃ films were studied depending on irradiation time. Parameters of Urbach absorption edge for X-ray irradiated (Ga_0.3In_0.7)₂Se₃ thin films were determined and compared with nonirradiated film. The spectral dependences of refractive indices of non-irradiated and X-ray irradiated (Ga_0.3In_0.7)₂Se₃ films are described in the framework of Wemple and DiDomenico model. TThe variation of the parameters of Wemple and DiDomenico model for non-irradiated and X-ray irradiated (Ga_0.3In_0.7)₂Se₃ films was discussed.

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Ihor P. Studenyak, Mykhaylo M. Pop, Mladen Kranjčec, Andriy M. Solomon, Nataliia V. Titova, Elena M. Sorochan, Paweł Komada, Indira Shedreyeva, and Gayni Karnakova "Optical constants and parameters of Urbach absorption edge for x-ray irradiated (Ga_0.3In_0.7)₂Se₃ films", Proc. SPIE 12040, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2021, 1204004 (3 November 2021); https://doi.org/10.1117/12.2607827

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