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Study of optical properties of thin films of tin oxide
https://doi.org/10.15518/isjaee.2024.10.213-225
Abstract
The article presents an experimental and theoretical study of the optical properties of tin oxide thin films. It is in thin films that the adsorption of gas molecules has a greater effect on the conductivity of the layers. The method of measurement using a spectrophotometer and further processing of experimental optical transmission spectra is presented. Transmission spectra were measured, from which the band gap width was determined.
Tin oxide films made by spray pyrolysis from a sol-gel solution were studied, and the structural properties of tin oxide were also considered. The experiment was conducted as follows. Two-aqueous tin chloride (SnCl2 = 2H2O) (0,5 M) is used as a precursor, isopropyl alcohol was used as a solvent. The solution was stirred for 1 hour, followed by 24 hours of exposure. The application of spray pyrolysis of SnO2 was carried out on the basis of a solution for the sol-gel method (SPGZ). To do this, the solution was filled into the tank of the automated spray pyrolysis unit USP-3. Optical properties were studied using a spectrophotometer SPECKS SSP-715-M spectrophotometer manufactured by JSC LOMO. It was revealed that the films have a transparency of T = 60-80% in the visible range of the spectrum. The optical properties of tin oxide films at temperatures of 200, 300, 400 °C are presented. The width of the forbidden zone, which is the value at a temperature of 200 °C – 3,96 eV, 300 °C – 3,98 eV, 400 °C – 3,98 eV.
About the Authors
A. V. Zvyagintseva
Federal State Budgetary Educational Institution of Higher Education
«Voronezh State Technical University»
Russian Federation
Russian Federation
Zvyagintseva Alla Vitalievna, Associate professor. Academic degree: Candidate of Technical Sciences
394006, Voronezh, 20th Anniversary of October St., 84
I. N. Panteleev
Federal State Budgetary Educational Institution of Higher Education
«Voronezh State Technical University»
Russian Federation
Russian Federation
Panteleev Igor Nikolaevich, Associate Professor, Candidate of Physicaland Mathematical Sciences
394006, Voronezh, 20th Anniversary of October St., 84
S. V. Dolzhenkov
Federal State Budgetary Educational Institution of Higher Education
«Voronezh State Technical University»
Russian Federation
Russian Federation
Dolzhenkov Svyatoslav Vladimirovich, Magister
394006, Voronezh, 20th Anniversary of October St., 84
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For citations:
Zvyagintseva A.V., Panteleev I.N., Dolzhenkov S.V. Study of optical properties of thin films of tin oxide. Alternative Energy and Ecology (ISJAEE). 2024;(10):213-225. (In Russ.) https://doi.org/10.15518/isjaee.2024.10.213-225
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