Effect of Time on the Optical and Structural Properties of Tin Oxide Thin Films as an Electron Transport Layer for Perovskite Solar Cell

International Journal of Applied Physics
© 2022 by SSRG - IJAP Journal
Volume 9 Issue 3
Year of Publication : 2022
Authors : L. A. Ozobialu, A. J. Ekpunobi, D. M. Jeroh

How to Cite?

L. A. Ozobialu, A. J. Ekpunobi, D. M. Jeroh, "Effect of Time on the Optical and Structural Properties of Tin Oxide Thin Films as an Electron Transport Layer for Perovskite Solar Cell," SSRG International Journal of Applied Physics, vol. 9,  no. 3, pp. 37-43, 2022. Crossref, https://doi.org/10.14445/23500301/IJAP-V9I3P104


The performance of a perovskite solar cell is significantly influenced by the electron transport layer. It lessens the recombination of free charge carriers (holes and electrons) with their equivalents on interface imperfections. In this study, we developed tin oxide films utilizing chemical bath deposition as an electron transport layer for perovskite solar cells. Ammonia served as a complexing agent in the deposition bath, which also contained 0.2M of tin chloride dehydrate (Sncl4. 2H2O) and 0.1M of KOH. The time ranged from one to three hours at a constant temperature of 70°C and with continual stirring. Using a UV-spectrophotometer, it was possible to measure how time affected the optical properties of the deposited thin films, such as their absorbance and transmittance at normal incidence of light in the 190–1100nm wavelength range. The outcome showed a large band gap and high transmittance. SnO2-ETL's chemical bath deposition method provides homogeneous thin film coverage and also makes it a great, affordable choice for manufacturing perovskite solar cells on a big scale.


Electron transport layer, Chemical bath deposition, Perovskite solar cell.


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