Sputtered indium-tin oxide/cadmium telluride junctions and cadmium telluride surfaces

Journal Article · Mon Mar 31 23:00:00 EST 1980 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.327892· OSTI ID:5336581

Courreges, F G; Fahrenbruch, A L; Bube, R H

The properties of indium-tin oxide (ITO)/CdTe junction solar cells prepared by rf sputtering of ITO on P-doped CdTe single-crystal substrates have been investigated through measurements of the electrical and photovoltaic properties of ITO/CdTe and In/CdTe junctions, and of electron beam induced currents (EBIC) in ITO/CdTe junctions. In addition, surface properties of CdTe related to the sputtering process were investigated as a function of sputter etching and thermal oxidation using the techniques of surface photovoltage and photoluminescence. ITO/CdTe cells prepared by this sputtering method consist of an n/sup +/-ITO/n-CdTe/p-CdTe buried homojunction with about a 1-..mu..m-thick n-type CdTe layer formed by heating of the surface of the CdTe during sputtering. Solar efficiencies up to 8% have been observed with V/sub 0c/=0.82 V and J/sub s/c=14.5 mA/cm/sup 2/. The chief degradation mechanism involves a decrease in V/sub 0c/ with a transformation of the buried homojunction structure to an actual ITO/CdTe heterojunction.

• Research Organization: Department of Materials Science and Engineering, Stanford University, Stanford, California 94305
• OSTI ID: 5336581
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
BEAMS
CADMIUM COMPOUNDS
CADMIUM TELLURIDE SOLAR CELLS
CADMIUM TELLURIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTALS
CURRENTS
DATA
DIRECT ENERGY CONVERTERS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTRON BEAMS
EQUIPMENT
ETCHING
FABRICATION
INDIUM COMPOUNDS
INDIUM OXIDES
INFORMATION
JUNCTIONS
LEPTON BEAMS
LUMINESCENCE
MONOCRYSTALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
PERFORMANCE
PHOTOELECTRIC CELLS
PHOTOLUMINESCENCE
PHOTOVOLTAIC CELLS
PHOTOVOLTAIC EFFECT
PHYSICAL PROPERTIES
SOLAR CELLS
SOLAR EQUIPMENT
SPUTTERING
SUBSTRATES
SURFACE FINISHING
SURFACES
TELLURIDES
TELLURIUM COMPOUNDS
TIN COMPOUNDS
TIN OXIDES