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Title: The reaction kinetics of Cu with the CdTe(111)-B surface: Formation of metastable Cu{sub x}Te (x{approx}2)

Abstract

In the present study, elemental Cu is deposited on the clean CdTe(111)-B surface and annealed in vacuum. Surface-composition maps generated by scanning Auger microcopy provide evidence that a reaction occurs between Cu and the CdTe(111)-B substrate that results in the formation of a metastable copper telluride phase Cu{sub x}Te (x{approx}2) at the surface. In situ thermal-desorption mass spectrometry measurements show that elemental Cd is released during the reaction and desorbs from the surface. Desorption of Te from the substrate is suppressed during the reaction. Analysis of Cd desorption traces demonstrates that the Cu+CdTe(111)-B reaction proceeds via zero-order kinetics, with an activation energy of 180{+-}5 kJ mol{sup -1}.

Authors:
 [1]
  1. National Renewable Energy Laboratory (NREL), Golden, Colorado 80401 (United States)
Publication Date:
OSTI Identifier:
20723221
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 123; Journal Issue: 18; Other Information: DOI: 10.1063/1.2102904; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ACTIVATION ENERGY; ANNEALING; AUGER ELECTRON SPECTROSCOPY; CADMIUM TELLURIDES; COPPER; DESORPTION; MASS SPECTROSCOPY; REACTION KINETICS; SCANNING ELECTRON MICROSCOPY; SEMICONDUCTOR MATERIALS; SURFACES

Citation Formats

Teeter, Glenn. The reaction kinetics of Cu with the CdTe(111)-B surface: Formation of metastable Cu{sub x}Te (x{approx}2). United States: N. p., 2005. Web. doi:10.1063/1.2102904.
Teeter, Glenn. The reaction kinetics of Cu with the CdTe(111)-B surface: Formation of metastable Cu{sub x}Te (x{approx}2). United States. doi:10.1063/1.2102904.
Teeter, Glenn. Tue . "The reaction kinetics of Cu with the CdTe(111)-B surface: Formation of metastable Cu{sub x}Te (x{approx}2)". United States. doi:10.1063/1.2102904.
@article{osti_20723221,
title = {The reaction kinetics of Cu with the CdTe(111)-B surface: Formation of metastable Cu{sub x}Te (x{approx}2)},
author = {Teeter, Glenn},
abstractNote = {In the present study, elemental Cu is deposited on the clean CdTe(111)-B surface and annealed in vacuum. Surface-composition maps generated by scanning Auger microcopy provide evidence that a reaction occurs between Cu and the CdTe(111)-B substrate that results in the formation of a metastable copper telluride phase Cu{sub x}Te (x{approx}2) at the surface. In situ thermal-desorption mass spectrometry measurements show that elemental Cd is released during the reaction and desorbs from the surface. Desorption of Te from the substrate is suppressed during the reaction. Analysis of Cd desorption traces demonstrates that the Cu+CdTe(111)-B reaction proceeds via zero-order kinetics, with an activation energy of 180{+-}5 kJ mol{sup -1}.},
doi = {10.1063/1.2102904},
journal = {Journal of Chemical Physics},
number = 18,
volume = 123,
place = {United States},
year = {Tue Nov 08 00:00:00 EST 2005},
month = {Tue Nov 08 00:00:00 EST 2005}
}