Process for producing light-absorbing chalcopyrite film

Details Process for producing light-absorbing chalcopyrite film Process for producing light-absorbing chalcopyrite film

1998-03-31

1999-06-08

Bell, Janyce

Coating processes

Centrifugal force utilized

427 76, 427226, 427229, 427250, 427255, 427377, 427380, 4273831, 4274301, B05D 312

Patent

active

059103361

ABSTRACT:
An improved process for producing a light-absorbing chalcopyrite film is disclosed, which comprises the steps of: applying at least one solution containing at least either of (a) an organic compound of a metal in Group 1B of the periodic table and (b) an organic compound of a metal in Group 3B of the periodic table on a substrate at least once to thereby form a thin film containing the organic compound (a) and the organic compound (b); heating the thin film in a reducing or inert gas atmosphere to convert the thin film into a thin metal film comprising the Group 1B metal and the Group 3B metal; and heating the thin metal film in an atmosphere containing either an element in Group 6B of the periodic table or a compound thereof to thereby convert the thin metal film into a thin chalcopyrite film. This process eliminates the problem concerning the control of the composition and thickness of a light-absorbing chalcopyrite film, and is suitable for the mass production of homogeneous large light-absorbing plates for use in solar cells.

REFERENCES:
patent: 4242374 (1980-12-01), Sansregret

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