Surface recombination at semiconductor electrodes: a single level study

Ramakrishna, S and Rangarajan, SK (1991) Surface recombination at semiconductor electrodes: a single level study. In: Journal of Electroanalytical Chemistry, 308 (1-2). pp. 49-61.

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Abstract

The recombination and the faradaic fluxes are shown to be sensitive to the location of a single level recombination center, when it is located near the band edges. As the surface level is shifted deeper into the band gap from either of the band edges, the back emission terms are dominated by electron capture and hole capture terms, and the occupancy of the surface level is no longer determined by its location in the band gap. However, when one of the back emission terms determines the surface state occupancy, it is shown that there exists a simple relation between the value of the surface level and the recombination and the faradaic fluxes respectively. Expressions to this effect are derived and verified in the case of the recombination flux, which characterized by the potential at which it attains its maximum value. For the faradaic flux the results are qualitative.

Item Type:	Journal Article
Publication:	Journal of Electroanalytical Chemistry
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	07 Dec 2010 07:41
Last Modified:	07 Dec 2010 07:41
URI:	http://eprints.iisc.ac.in/id/eprint/34172

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