Electrochemical deposition of cadmium sulfide thin films from organic solution I. Sulfur reduction and cadmium-polysulfide complex formation
Journal Article
·
· J. Electrochem. Soc.; (United States)
The reduction of sulfur in an aprotic solvent (DMSO) is known to be a two-stage process; each stage involves a bielectronic electrochemical step followed by a chemical dismutation reaction. When reduction is performed at a rotating electrode, it is shown that the electrochemical steps alone are involved in the electrode process. The voltammetric waves then correspond to the simple scheme 1st wave: S/sub 8/ + 2e/sup -/ ..-->.. S/sub 8//sup 2 -/ 2nd wave: S/sub 8//sup 2 -/ + 2e/sup -/ ..-->.. 2S/sub 4//sup 2 -/ The slower dismutation reactions appear only in the bulk of solution. They lead to electron number which differ from 2 when S/sub 8/ is electrolyzed. The addition of Cd/sup 2 -/ ions to a polysulfide ion solution yields soluble polysulfide-cadmium 2:1 complexes (Cd(S /SUB x/ )/sub 2/)/sup 2 -/ with /chi/ = 8, 6, and 4. The stability of the complex is increased when /chi/ decreases from 8 to 4, which leads to dismutation and exchange reactions between complexes, polysulfide ions, and sulfur.
- Research Organization:
- Laboratoire de Spectrometrie Physique, CNRS et Universite de Grenoble I, 38402 Saint-Martin d'Heres Cedex
- OSTI ID:
- 6491159
- Journal Information:
- J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 132:2; ISSN JESOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DEPOSITION
DMSO
ELECTROCHEMICAL COATING
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYSIS
ELEMENTS
FILMS
INORGANIC PHOSPHORS
KINETICS
LYSIS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOSPHORS
REACTION KINETICS
REDUCTION
SULFIDES
SULFOXIDES
SULFUR
SULFUR COMPOUNDS
SURFACE COATING
THIN FILMS
360101* -- Metals & Alloys-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DEPOSITION
DMSO
ELECTROCHEMICAL COATING
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYSIS
ELEMENTS
FILMS
INORGANIC PHOSPHORS
KINETICS
LYSIS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOSPHORS
REACTION KINETICS
REDUCTION
SULFIDES
SULFOXIDES
SULFUR
SULFUR COMPOUNDS
SURFACE COATING
THIN FILMS