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Analysis of Emission Rate Measurements in a Material Showing a Meyer-Neldel- Rule

Published online by Cambridge University Press:  01 February 2011

Richard S. Crandall
Richard S. Crandall*
Affiliation:
National Renewable Energy Laboratory, Golden, CO 80401
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Abstract

This paper presents data showing a Meyer-Neldel rule (MNR) in InGaAsN alloys. It is shown that without this knowledge, significant errors can be made using Deep-Level Transient-Spectroscopy (DLTS) emission data to determine capture cross sections. The errors arise because of the neglect of significant transition entropy changes associated with multiphonon excitation of charge from deep traps. Ignoring the entropy change results in cross section values ranging over five orders-of-magnitude in InGaAsN alloys and 18 orders-of-magnitude in CuInGaSe alloys. Only by correctly accounting for the MNR and the accompanying entropy changes in analyzing the DLTS data will the correct value of the cross section be obtained.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 799: Symposium Z – Progress in Compound Semiconductor Materials III - Electronic and Optoelectronic Applications , 2003 , Z1.6
Copyright
Copyright © Materials Research Society 2004

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References

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