Cover Image

Advanced amorphous materials for photovoltaic conversion. Semiannual report, October 1, 1979-March 31, 1980 [electronic resource]

Saved in:
Bibliographic Details
Online Access: Online Access
Corporate Authors: Alabama A & M University (Researcher), Brookhaven National Laboratory (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Upton, N.Y. : Oak Ridge, Tenn. : Brookhaven National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, 1980.
Subjects:
Information.
Experimental Data.
Deposition.
Plasma Arc Spraying.
Direct Energy Converters.
Equipment.
Solar Equipment.
Physical Properties.
Photoluminescence.
Hydrogen Additions.
Mobility.
Charge Carriers.
Elements.
Spray Coating.
Emission Spectroscopy.
Solar Cells.
Optical Properties.
Electrical Properties.
Materials.
Spectroscopy.
Semimetals.
Silicon Solar Cells.
Charge Transport.
Numerical Data.
Amorphous State.
Silicon.
Graphs.
Photoconductivity.
Surface Coating.
Photoelectric Cells.
Impurities.
Semiconductor Materials.
Photovoltaic Cells.
Electric Conductivity.
Luminescence.
Carrier Mobility.
Data.
Spectral Response.
Materials Science.
Solar Energy.
Description
Abstract:The primary objectives of this project are twofold: (i) to investigate new amorphous semiconductor (a-Sc) materials, in which recombination centers are passivated, using plasma deposition techniques; and (ii) to characterize the optoelectronic properties pertaining to both majority-carrier and minority-carrier transport in as-deposited films and in devices. The specific goals in FY 1980 are: (i) to continue investigations of the effects of atmospheric impurities, i.e., nitrogen and oxygen, on the optoelectronic properties of a-Si:H alloys; and (ii) to initiate a study of the effects of these impurities upon the photovoltaic conversion efficiencies of diagnostic devices that are fabricated using such alloys. The following activities were emphasized in the program: (i) an expansion of plasma studies using optical emission spectroscopy in order to identify emitting reactive species due to impurities; and (ii) electrical and optical measurements on alloys with calibrated impurity levels by measurments of photoconductivity, photoluminescence, vibrational spectroscopy, etc.; and (iii) completing the apparatus for device measurements of spectral response, dark I-V characteristics, illuminated I-V characteristics, etc. Associated with the last activity, the fabrication of solar cells was begun using low-impurity a-Si:H materials and various a-Si:(H,O,N) alloys. Progress is reported. (WHK)
Item Description:Published through SciTech Connect.
01/01/1980.
"bnl-51260"
Vanier, P.E.; Delahoy, A.E.; Griffith, R.W.; Hirsch, M.D.; Kampas, F.J.
Physical Description:Pages: 38 : digital, PDF file.

Similar Items