Abstract
Polycrystalline Fe2TiO5 films were prepared on nesa silica glass substrates by the sol-gel method, and their photoanodic properties were measured in a three-electrode wet cell with an aqueous buffer solution of pH = 7. Gel films were crystallized into Fe2TiO5 when fired at ≥500°C. The photoanodic current significantly increased when the films were fired at 700°C, and then decreased with increasing firing temperature. Thicker films obtained by repeating the gel film deposition and firing showed smaller photocurrent, and the 50 nm thick film prepared via non-repetitive deposition exhibited the maximum photocurrent. Although the photoresponse was extended to wavelengths near 500 nm, the maximum quantum yield was as low as 0.12 at a wavelength of 340 nm.
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Kozuka, H., Kajimura, M. Sol-Gel Preparation and Photoelectrochemical Properties of Fe2TiO5 Thin Films. Journal of Sol-Gel Science and Technology 22, 125–132 (2001). https://doi.org/10.1023/A:1011228706934
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DOI: https://doi.org/10.1023/A:1011228706934