CaltechAUTHORS
  A Caltech Library Service

Passivation of GaAs surface recombination with organic thiols

Lunt, Sharon R. and Santangelo, Patrick G. and Lewis, Nathan S. (1991) Passivation of GaAs surface recombination with organic thiols. Journal of Vacuum Science and Technology B, 9 (4). pp. 2333-2336. ISSN 1071-1023. http://resolver.caltech.edu/CaltechAUTHORS:LUNjvstb91

[img]
Preview
PDF - Published Version
See Usage Policy.

709Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:LUNjvstb91

Abstract

Exposure of GaAs crystals to solutions of organic thiols resulted in substantial reductions in nonradiative GaAs surface recombination rates. This process yielded improvements in steady state photoluminescence signals that were comparable to those obtained after a Na2S·9H2O (aqueous) treatment. Use of a series of thiols indicated that the chemically important surface electrical trap levels behaved as a polarizable, electron deficient center. X-ray photoelectron spectroscopy indicated that the thiols did not remove excess As0 nor form detectable levels of As2S3-like phases, implying that neither of these factors is required for effective surface passivation chemistry.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1116/1.585743DOIUNSPECIFIED
Additional Information:© 1991 American Vacuum Society. Received 30 January 1991; accepted 22 March 1991. We thank the Department of Energy, Office of Basic Energy Sciences, for support of this work. We are grateful to C. Sandroff and E. Yablonovitch of Bellcore for several helpful discussions, to H. McMillan of Varian Associates for supplying the GaAs/AlGaAs sample used in this work, and to R.P. Vasquez of JPL and E.-H. Cirlin of Hughes Research Laboratories for use of the XPS instrumentation. This is Contribution No. 8392 from the Caltech Division of Chemistry and Chemical Engineering.
Funders:
Funding AgencyGrant Number
Department of EnergyUNSPECIFIED
Subject Keywords:GALLIUM ARSENIDES, SURFACES, THIOLS, PASSIVATION, RECOMBINATION, PHOTOLUMINESCENCE, PHOTOELECTRON SPECTROSCOPY
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Division of Chemistry and Chemical Engineering8392
Record Number:CaltechAUTHORS:LUNjvstb91
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LUNjvstb91
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12053
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:21 Oct 2008 16:28
Last Modified:26 Dec 2012 10:26

Repository Staff Only: item control page