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Title: Development of photoelectrochemical cells based on compound semiconductors and nonaqueous electrolytes. Semiannual report, May 1, 1981-October 31, 1981

Abstract

A reproducible procedure for chemical bath deposition (CBD) of CdSe has been documented in detail, allowing a consistent production of photoelectrode yielding 5.5 to 6.5% conversion efficiency in alkaline polysulfide electrolyte (employing a tungsten halogen lamp/KG-2 filter solar simulated light source). The CBD films of n-CdSe on Ti have achieved an efficiency of approx. 10% under both solar simulated and real sunlight conditions using an Fe(CN)/sub 6//sup -3///sup -4/ electrolyte at pH 13. For an initial current density of 16 mA/cm/sup 2/ (approx. 80 mW/cm/sup 2/ illumination), a decrease of approx. 25% is observed after 3 hours illumination. Research was completed on developing a stable Cu/sup +///sup +2/ redox electrolyte in CH/sub 3/CN, which contains excess Cl/sup -/, to promote photochemical stability. For poly-n-GaAs, best results were obtained for electrolytes containing approx. 0.5M Cucl, 0.05M CuCl/sub 2/, 1M tetrabutylammonium chloride, viz: at 80 mW/cm/sup 2/, j/sub sc/ = 19 mA/cm/sup 2/, V/sub oc/ = 0.74V, P/sub max/ = 3.78 mW/cm/sup 2/, ff = 0.27 and eta = 4.8% (eta = 8.1% at 8 mW/cm/sup 2/ irradiation). Five encapsulated sealed cells have been tested with 15 cm/sup 2/ photoelectrodes comprised of CBD CdSe on Ti. The cells are frontwall illuminated withmore » various configurations for ion flow to the rear-placed Ni/CoS electrode. For one design, an efficiency of 4.3% was achieved under 63 mW/cm/sup 2/ real solar illumination. Laser spot scanning has been developed as a technique for evaluation of both large area geometrical effects and microscopic photoelectrode morphological effects on the performance of PECs.« less

Authors:
Publication Date:
Research Org.:
Solar Energy Research Inst., Golden, CO (USA); EIC Labs., Inc., Newton, MA (USA)
Sponsoring Org.:
USDOE
OSTI Identifier:
5287072
Report Number(s):
SERI/PR-8002-7-T4
ON: DE82013700
DOE Contract Number:  
AC02-77CH00178
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of document are illegible
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PHOTOELECTROCHEMICAL CELLS; ELECTROLYTES; PERFORMANCE TESTING; PHOTOANODES; ACETONITRILE; CADMIUM SELENIDES; COBALT SULFIDES; COPPER CHLORIDES; CURRENT DENSITY; DESIGN; EFFICIENCY; FERRICYANIDES; FERROCYANIDES; FILMS; GALLIUM ARSENIDES; LASER RADIATION; NICKEL; PH VALUE; POLYCRYSTALS; SOLAR SIMULATORS; TITANIUM; ANALOG SYSTEMS; ANODES; ARSENIC COMPOUNDS; ARSENIDES; CADMIUM COMPOUNDS; CHALCOGENIDES; CHLORIDES; CHLORINE COMPOUNDS; COBALT COMPOUNDS; COMPLEXES; COPPER COMPOUNDS; COPPER HALIDES; CRYSTALS; ELECTROCHEMICAL CELLS; ELECTRODES; ELECTROMAGNETIC RADIATION; ELEMENTS; EQUIPMENT; FUNCTIONAL MODELS; GALLIUM COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; IRON COMPLEXES; METALS; NITRILES; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PNICTIDES; RADIATIONS; SELENIDES; SELENIUM COMPOUNDS; SIMULATORS; SOLAR EQUIPMENT; SULFIDES; SULFUR COMPOUNDS; TESTING; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; 140505* - Solar Energy Conversion- Photochemical, Photobiological, & Thermochemical Conversion- (1980-)

Citation Formats

Rauh, R. D. Development of photoelectrochemical cells based on compound semiconductors and nonaqueous electrolytes. Semiannual report, May 1, 1981-October 31, 1981. United States: N. p., 1982. Web. doi:10.2172/5287072.
Rauh, R. D. Development of photoelectrochemical cells based on compound semiconductors and nonaqueous electrolytes. Semiannual report, May 1, 1981-October 31, 1981. United States. doi:10.2172/5287072.
Rauh, R. D. Mon . "Development of photoelectrochemical cells based on compound semiconductors and nonaqueous electrolytes. Semiannual report, May 1, 1981-October 31, 1981". United States. doi:10.2172/5287072. https://www.osti.gov/servlets/purl/5287072.
@article{osti_5287072,
title = {Development of photoelectrochemical cells based on compound semiconductors and nonaqueous electrolytes. Semiannual report, May 1, 1981-October 31, 1981},
author = {Rauh, R. D.},
abstractNote = {A reproducible procedure for chemical bath deposition (CBD) of CdSe has been documented in detail, allowing a consistent production of photoelectrode yielding 5.5 to 6.5% conversion efficiency in alkaline polysulfide electrolyte (employing a tungsten halogen lamp/KG-2 filter solar simulated light source). The CBD films of n-CdSe on Ti have achieved an efficiency of approx. 10% under both solar simulated and real sunlight conditions using an Fe(CN)/sub 6//sup -3///sup -4/ electrolyte at pH 13. For an initial current density of 16 mA/cm/sup 2/ (approx. 80 mW/cm/sup 2/ illumination), a decrease of approx. 25% is observed after 3 hours illumination. Research was completed on developing a stable Cu/sup +///sup +2/ redox electrolyte in CH/sub 3/CN, which contains excess Cl/sup -/, to promote photochemical stability. For poly-n-GaAs, best results were obtained for electrolytes containing approx. 0.5M Cucl, 0.05M CuCl/sub 2/, 1M tetrabutylammonium chloride, viz: at 80 mW/cm/sup 2/, j/sub sc/ = 19 mA/cm/sup 2/, V/sub oc/ = 0.74V, P/sub max/ = 3.78 mW/cm/sup 2/, ff = 0.27 and eta = 4.8% (eta = 8.1% at 8 mW/cm/sup 2/ irradiation). Five encapsulated sealed cells have been tested with 15 cm/sup 2/ photoelectrodes comprised of CBD CdSe on Ti. The cells are frontwall illuminated with various configurations for ion flow to the rear-placed Ni/CoS electrode. For one design, an efficiency of 4.3% was achieved under 63 mW/cm/sup 2/ real solar illumination. Laser spot scanning has been developed as a technique for evaluation of both large area geometrical effects and microscopic photoelectrode morphological effects on the performance of PECs.},
doi = {10.2172/5287072},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {3}
}