Effects of temperature on excited-state descriptions of luminescent photoelectrochemical cells employing tellurium-doped cadmium sulfide electrodes. Technical report
The need for alternate energy sources has led to the rapid development of photoelectrochemical cells (PECs). A PEC consisting of an n-type semiconductor, a counterelectrode, and a suitably chosen electrolyte can convert optical energy directly into chemical fuels and/or electricity (1,2,3,4). We recently reported that tellurium-doped CdS (CdS:Te) mimics undoped CdS in its ability to sustain the conversion of monochromatic ultraband gap light (> or about = 2.4 eV; lambda < or about = 500 nm (5)) into electricity at about 7% efficiency in PECs employing aqueous polychalcogenide electrolytes (6,7,8,9). A novel feature of the CdS:Te photoanodes is that they emit lambda sub max about 600 nm for 100 ppm CdS:Te) with about 0.1% efficiency while effecting the oxidation of polychalcogenide species.
- Research Organization:
- Wisconsin Univ., Madison (USA). Dept. of Chemistry
- OSTI ID:
- 5439422
- Report Number(s):
- AD-A-107840/1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
ANODES
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMILUMINESCENCE
EFFICIENCY
ELECTRICITY
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTIC CELLS
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
INORGANIC PHOSPHORS
LUMINESCENCE
MATERIALS
N-TYPE CONDUCTORS
OPTICAL PROPERTIES
PHOSPHORS
PHOTOANODES
PHOTOCHEMICAL REACTIONS
PHOTOELECTROCHEMICAL CELLS
PHYSICAL PROPERTIES
SEMICONDUCTOR MATERIALS
SOLAR EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
TELLURIUM COMPOUNDS
TEMPERATURE DEPENDENCE