Abstract
Nanocrystalline TiO2 films of different morphology have been fabricated using various experimental approaches. Photoluminescent properties of films at 90 K have been studied. The effect of heat treatment on low-temperature properties caused by the anatase–rutile phase transition has been demonstrated. It has been shown that the luminescence of rutile films is longer, for both TiO2 nanoparticles and nanotubes. Photovoltaic cells of the DSSC type have been assembled on the basis of the obtained nanostructures. Impedance spectroscopy has demonstrated that the resistance to electron transport in films of TiO2 nanotubes is higher and the recombination rate is lower than in films of nanoparticles.
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Funding
The work was carried out within the framework of grants from the Committee for Science of the Ministry of Education and Science of the Republic of Kazakhstan (program type A, nos. APP-PHD-A-19/004P and AP08052675: grants for supporting studies and trainings of PhDs), as well as State Assignment of Kurnakov Institute of General and Inorganic Chemistry, RAS in the field of basic research and State budget topic of the Chemistry Department of Moscow State University “Catalysis and Physical Chemistry of Surfaces” (no. AAAA-A16-116092810057-8).
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Serikov, T.M., Ibrayev, N.K., Isaikina, O.Y. et al. Nanocrystalline TiO2 Films: Synthesis and Low-Temperature Luminescent and Photovoltaic Properties. Russ. J. Inorg. Chem. 66, 117–123 (2021). https://doi.org/10.1134/S0036023621010071
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DOI: https://doi.org/10.1134/S0036023621010071