Entwicklung und Überprüfung von Photoelektroden zur Wasserzersetzung |
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| Authors: | K J Hartig Nikola Getoff |
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| Institution: | (1) Institut für Theoretische Chemie und Strahlenchemie der Universität Wien und Ludwig-Boltzmann-Institut für Strahlenchemie, A-1090 Wien, Österreich |
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| Abstract: | Polycrystallinen-TiO2 semiconductor photoanodes were produced by controlled thermal oxidation, anodic oxidation of Ti-foils and vapour deposition of TiO2. Samples of both former series were subsequently reduced in H2-atmosphere (700°C, 30 min) in order to enhance the donor density in the semiconductor layer. All TiO2-samples were investigated with respect to their crystal structure, the relationship between thickness and photoefficiency, frequency dependence ofMott-Schottky plots and corrosion resistance at long-time operation. Using 10 ns LASER-pulses ( =353 nm; 0.6 mJ) some preliminary kinetic studies of the photocurrent were also reported.Herrn Prof. Dr.K. Schlögl mit herzlichen Glückwünschen zum 60. Geburtstag gewidmet. |
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| Keywords: | Photoelectrochemical water splitting Polycrystalline n-TiO2 photoanodes Frequency dependence of Mott-Schottky plots Thickness and efficiency of n-TiO2-films |
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