Photovoltaic effect on titanium dioxide
Abstract
A necessary condition for the occurrence of the photovoltaic effect is the presence of a film of oxide, halogen or sulfur compounds of metals on the clean metal surface of the illuminated electrode. It can be stated that most of the studied photosensitive layers are compounds related to the type of semiconductors, and the photovoltaic element can be considered as a system consisting of a semiconductor bordering a metal electrode on one side, and an electrolyte on the other. Thus, it is natural to compare the photovoltaic effect with the internal photoelectric effect characteristic of semiconductors. The advantage of titanium dioxide over copper oxide is its chemical inertness, which allows for a wide variation in the conditions of the medium bordering the electrode. Based on the spectral characteristics of the positive and negative signs, it can be concluded that photocurrents of both signs are caused by electronic processes in the semiconductor that are independent of each other.
References
- Veselovsky V. Photogalvanic process on the Ag electrode. Journal of Physical Chemistry, 1939, v. XV.
- Veselovsky V. Application of the light-electrochemical method to the study of heterogeneous sensitization. Journal of Physical Chemistry, 1947, v. XXI.
- Veselovsky V. On the question of the elementary photogalvanic act. Journal of Technical Physics, 1943, v. XX.
- Veselovsky V. Photoelectrochemical process and the mechanism of oxygen evolution on Pt. Journal of Physical Chemistry, 1950, v. XXIV.
- Veselovsky V. Mechanism of the photoelectrochemical process on Ag — Ag2O. Journal of Physical Chemistry. 1948, v. XXII.
- Volkenstein F. O. Electrical conductivity of semiconductors. Gostekhizdat, 1947.
- Volkenstein F. O. Some features of adsorption caused by thermal disorder on the surface of a crystal. Journal of Physical Chemistry, 1949 XXII.
- Esin O. and Beklemesheva T. On the mechanization of potential generation in foreign solutions. Zhurnal obshchestvennoy khimii, 1934, v. IV.
- Lepen. Surface compounds and surface chemical reactions. Uspekhi khimii, 1940, v. IX.
- Orestov I. On the behavior of electrodes in solutions of foreign ions. Zhurnal physichii, 1938, v. IX.
- Terenin A. Photochemistry of dyes. Publ. AN SSSR, 1947.
- Tamm I. Phys. Z. d. Socv. Un. 1932, № VI.
- Andubert R. Comptes Rendus. 1933, № 177.
- Andubert R. Comptes Rendus. 1924, № 179.
- Andubert R. Comptes Rendus. 1931, No. 193.
- Crube und Baumeister. Zeitschr. f. Elektroch. 1924, no. 30.
- Earlie D. Phys. Chem. 1939, No. 184.
- Rao G. Zeitschr. Phys. Chem. 1939, No. 184.
- Athanasin G. Comptes Rendus. 1925, No. 180.
- Garrison A. J. Phys. Chem. 1923, no. 27.
- Scheopard S. J. Phys. Chem. 1923, No. 27.
- Hober. Naturwissen. 1931, No. 19.