Investigation of redox processes at semiconductor electrode liquid junctions
Research in fundamental aspects of photoelectrochemical cells has been in the following areas: chemical probes for hot carrier processes, electrostatic theory for describing electrical interactions at interfaces, and kinetics of electron transfer at ideal semiconductor solution interfaces. Our goal is to achieve a better understanding of dark and photo-induced current flow at the semiconductor electrode/redox electrolyte interface (SEI) so that devices and processes utilizing this interface for solar energy conversion can be developed or improved. Our most important accomplishment has been the development of a redox system capable of detecting hot electrons at the p-InP/acetonitrile interface. Also, we have examined electrostatic theory for the image potential of an ion as a function of distance from the SEI. Finally, our group was one of the first to realize that the 2-dimensional metal chalcogenides (MC) are excellent materials for fundamental studies of electron transfer at the SEI. One of the chief potential advantages for use of MC's is the formation of semiconductor/liquid junctions with nearly ideal electrochemical properties. 27 refs., 1 fig.
- Research Organization:
- Colorado Univ., Boulder, CO (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- FG02-84ER13247
- OSTI ID:
- 6433663
- Report Number(s):
- DOE/ER/13247-6; ON: DE91001787
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ACETONITRILE
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COPPER
DOCUMENT TYPES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRON TRANSFER
ELECTROSTATICS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
INTERFACES
MATERIALS
METALS
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
P-TYPE CONDUCTORS
PROGRESS REPORT
REDOX REACTIONS
REDUCTION
SEMICONDUCTOR MATERIALS
TIN COMPOUNDS
TIN HALIDES
TRANSITION ELEMENTS
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ACETONITRILE
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COPPER
DOCUMENT TYPES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRON TRANSFER
ELECTROSTATICS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
INTERFACES
MATERIALS
METALS
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
P-TYPE CONDUCTORS
PROGRESS REPORT
REDOX REACTIONS
REDUCTION
SEMICONDUCTOR MATERIALS
TIN COMPOUNDS
TIN HALIDES
TRANSITION ELEMENTS