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Advanced amorphous materials for photovoltaic conversion. Annual report for 1983

Author
Vanier, P. E.
Published
United States : [publisher not identified], 1984
Springfield, Va.: National Technical Information Service, [approximately 1984]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Corderman, R. R., Kampas, F. J., and Rajeswaran, G.

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Summary
The task of this program is to fabricate and characterize thin-film amorphous semiconductor photovoltaic devices, and to develop new materials with properties which help to improve the conversion efficiency and stability of the devices. An important goal of the program is to increase the rate of deposition of high-quality semiconducting material in order to make the technology more economical. The materials include intrinsic and doped hydrogenated amorphous silicon and related alloys deposited by rf capacitive glow discharge, and transparent conducting layers such as indium oxide and indium tin oxide. The improvement of deposition rate and the optimization of film properties for device applications require a fundamental understanding of the processes occurring in the glow-discharge plasma and at the surface of the growing film. Techniques such as optical emission spectroscopy and mass spectrometry are used to analyze these processes. The prepared films are studied using optical and infrared spectroscopy, electron microscopy, photoconductivity, and photoluminescence. The film properties are then correlated with plasma processing parameters. High-efficiency photovoltaic devices are fabricated in order to test the usefulness of the materials for the different layers of a solar cell, and to explore problems which may occur at the interfaces between these layers. Factors affecting the efficiency and stability of such cells are deduced from an analysis of their electrical characteristics and spectral response.
Report Numbers
DE84017198; BNL-51772
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AC02-76CH00016
OSTI Identifier 6804299
Research organization: Brookhaven National Lab. (BNL), Upton, NY (United States).
View MARC record | catkey: 47345493