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Correlations between the interfacial chemistry and current-voltage behavior of n-GaAs/liquid junctions

Tufts, Bruce J. and Casagrande, Louis G. and Lewis, Nathan S. and Grunthaner, Frank J. (1990) Correlations between the interfacial chemistry and current-voltage behavior of n-GaAs/liquid junctions. Applied Physics Letters, 57 (12). pp. 1242-1244. ISSN 0003-6951. http://resolver.caltech.edu/CaltechAUTHORS:TUFapl90

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Abstract

Correlations between the surface chemistry of etched, (100) oriented n-GaAs electrodes and their subsequent photoelectrochemical behavior have been probed by high-resolution x-ray photoelectron spectroscopy. GaAs photoanodes were chemically treated to prepare either an oxide-free near stoichiometric surface, a surface enriched in zero-valent arsenic (As0), or a substrate-oxide terminated surface. The current-voltage (I-V) behavior of each surface type was subsequently monitored in contact with several electrolytes.


Item Type:Article
Additional Information:Copyright © 1990 American Institute of Physics (Received 16 April 1990; accepted 2 July 1990) We thank the Department of Energy, Office of Basic Energy Sciences, for support of this work. We thank Dr. C. L. R. Lewis of Varian Associates, Palo Alto, CA, for a generous supply of GaAs samples and acknowledge R. P. Vasquez and M. H. Hecht of the Jet Propulsion Laboratory, Pasadena, CA, for assistance with the XPS instrument used in this study. N.S.L. also acknowledges support as an A. P. Sloan Fellow and as a Dreyfus Teacher-Scholar. Erratum: Appl. Phys. Lett. 57, 2262 (1990)
Subject Keywords:GALLIUM ARSENIDES; CHEMICAL PROPERTIES; ELECTROLYTES; SURFACE PROPERTIES; CORRELATIONS; PHOTOCHEMISTRY; ELECTROCHEMISTRY; SCHOTTKY EFFECT; PHOTOCONDUCTIVITY; SURFACE REACTIONS; IV CHARACTERISTIC; SOLID–FLUID INTERFACES; SEMICONDUCTOR–ELECTROLYTIC CONTACTS
Record Number:CaltechAUTHORS:TUFapl90
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:TUFapl90
Alternative URL:http://dx.doi.org/10.1063/1.103497
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2424
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:03 Apr 2006
Last Modified:26 Dec 2012 08:49

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