Improved efficiency of CdSe photoanodes by photoelectrochemical etching

Journal Article · Fri Aug 15 04:00:00 EDT 1980 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.91931· OSTI ID:5321359

Tenne, R; Hodes, G

By illuminating a CdSe photoanode in an electrolyte in which it is photoelectrochemically unstable, a selective etching of the CdSe to a matte black surface occurs with formation of small pits (approx. =1000 A diameter). This photoelectrochemical etch was found to improve the output characteristics of the CdSe-polysulfide photoelectrochemical cell through an increase in short-circuit current (SCC) for single-crystal CdSe, and an increase in fill factor and SCC for polycrystalline CdSe, where the improvement is more marked. This increase could be explained only partly through decreased reflectivity of the surface, and is probably connected with removal of (near) surface recombination centers.

• Research Organization: Department of Plastics Research, The Weizmann Institute of Science, Rehovot, Israel
• OSTI ID: 5321359
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 37:4; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
ANODES
CADMIUM COMPOUNDS
CADMIUM SELENIDES
CHALCOGENIDES
CHEMISTRY
CONVERSION
CRYSTALS
EFFICIENCY
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ENERGY CONVERSION
EQUIPMENT
ETCHING
MONOCRYSTALS
MORPHOLOGY
OPTICAL PROPERTIES
PERFORMANCE
PHOTOANODES
PHOTOCHEMISTRY
PHOTOELECTROCHEMICAL CELLS
PHYSICAL PROPERTIES
POLYCRYSTALS
RECOMBINATION
REFLECTIVITY
SELENIDES
SELENIUM COMPOUNDS
SOLAR ENERGY CONVERSION
SOLAR EQUIPMENT
SURFACE FINISHING
SURFACE PROPERTIES