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Title: Thin film heterojunction photovoltaic cells and methods of making the same

A method of fabricating a thin film heterojunction photovoltaic cell which comprises depositing a film of a near intrinsic or n-type semiconductor compound formed of at least one of the metal elements of Class II B of the Periodic Table of Elements and at least tellurium and then heating said film at a temperature between about 250.degree. C. and 500.degree. C. for a time sufficient to convert said film to a suitably low resistivity p-type semiconductor compound. Such film may be deposited initially on the surface of an n-type semiconductor substrate. Alternatively, there may be deposited on the converted film a layer of n-type semiconductor compound different from the film semiconductor compound. The resulting photovoltaic cell exhibits a substantially increased power output over similar cells not subjected to the method of the present invention.
Inventors:
 [1];  [1];  [1]
  1. (Los Angeles, CA)
Issue Date:
OSTI Identifier:
864581
Assignee:
Monosolar, Inc. (Santa Monica, CA) OSTI
Patent Number(s):
US 4388483
Application Number:
06/300,116
Contract Number:
XS091521
Country of Publication:
United States
Language:
English
Subject:
film; heterojunction; photovoltaic; cells; methods; method; fabricating; cell; comprises; depositing; near; intrinsic; n-type; semiconductor; compound; formed; metal; elements; ii; periodic; table; tellurium; heating; temperature; 250; degree; 500; time; sufficient; convert; suitably; resistivity; p-type; deposited; initially; surface; substrate; alternatively; converted; layer; resulting; exhibits; substantially; increased; power; output; similar; subjected; metal elements; substantially increased; n-type semiconductor; semiconductor compound; metal element; photovoltaic cells; power output; semiconductor substrate; time sufficient; photovoltaic cell; periodic table; p-type semiconductor; comprises depositing; substantially increase; compound formed; film semiconductor; film heterojunction; increased power; heterojunction photovoltaic; cell exhibits; compound form; resulting ph; type semiconductor; similar cell; /136/205/257/438/