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Title: Electrochemical deposition of ZnSe and (Zn,Cd)Se films from nonaqueous solutions

Abstract

Films of (Zn,Cd)Se and ZnSe were electrodeposited from dimethylsulfoxide solutions of elemental Se and the perchlorates of Zn and Cd. The composition of the mixed selenides could be controlled by variation of the deposition current density, utilizing diffusion control of the low concentrations of Cd(ClO{sub 4}){sub 2}. The film composition was measured by X-ray photoelectron spectroscopy and compared with the measured bandgap values extracted from optical transmission spectra. Photoelectrochemical photocurrent spectroscopy and contact potential difference (Kelvin probe) measurements both showed changes in apparent conductivity type with Zn concentration in the electrolyte from n-type (low Zn) concentration to p-type (high Zn). This phenomenon is discussed in terms of preferential surface trapping of either electrons or holes at the nanocrystallite surface.

Authors:
;
Publication Date:
Research Org.:
Weizmann Inst. of Science, Rehovot (IL)
OSTI Identifier:
20080581
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 147; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0013-4651
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; ZINC SELENIDES; CADMIUM SELENIDES; ELECTRODEPOSITION; ELECTRODEPOSITED COATINGS; CHEMICAL COMPOSITION; PHOTOCURRENTS; PHOTOCONDUCTIVITY; SOLAR CELLS; WINDOWS

Citation Formats

Gal, D., and Hodes, G. Electrochemical deposition of ZnSe and (Zn,Cd)Se films from nonaqueous solutions. United States: N. p., 2000. Web. doi:10.1149/1.1393441.
Gal, D., & Hodes, G. Electrochemical deposition of ZnSe and (Zn,Cd)Se films from nonaqueous solutions. United States. doi:10.1149/1.1393441.
Gal, D., and Hodes, G. Mon . "Electrochemical deposition of ZnSe and (Zn,Cd)Se films from nonaqueous solutions". United States. doi:10.1149/1.1393441.
@article{osti_20080581,
title = {Electrochemical deposition of ZnSe and (Zn,Cd)Se films from nonaqueous solutions},
author = {Gal, D. and Hodes, G.},
abstractNote = {Films of (Zn,Cd)Se and ZnSe were electrodeposited from dimethylsulfoxide solutions of elemental Se and the perchlorates of Zn and Cd. The composition of the mixed selenides could be controlled by variation of the deposition current density, utilizing diffusion control of the low concentrations of Cd(ClO{sub 4}){sub 2}. The film composition was measured by X-ray photoelectron spectroscopy and compared with the measured bandgap values extracted from optical transmission spectra. Photoelectrochemical photocurrent spectroscopy and contact potential difference (Kelvin probe) measurements both showed changes in apparent conductivity type with Zn concentration in the electrolyte from n-type (low Zn) concentration to p-type (high Zn). This phenomenon is discussed in terms of preferential surface trapping of either electrons or holes at the nanocrystallite surface.},
doi = {10.1149/1.1393441},
journal = {Journal of the Electrochemical Society},
issn = {0013-4651},
number = 5,
volume = 147,
place = {United States},
year = {2000},
month = {5}
}