Polycrystalline photovoltaic cell

Details Polycrystalline photovoltaic cell Polycrystalline photovoltaic cell

1980-03-04

1983-10-25

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136260, 357 30, 357 59, 357 62, H01L 3106

Patent

active

044120915

ABSTRACT:
A photovoltaic cell having an electrically conductive substrate, which may be glass having a film of conductive tin oxide; a first layer containing a suitable semiconductor, which layer has a first component film with an amorphous structure and a second component film with a polycrystalline structure; a second layer forming a heterojunction with the first layer; and suitable electrodes where the heterojunction is formed from a solution containing copper, the amorphous film component is superposed above an electrically conductive substrate to resist permeation of the copper-containing material to shorting electrical contact with the substrate. The penetration resistant amorphous layer permits a variety of processes to be used in forming the heterojunction with even very thin layers (1-6.mu. thick) of underlying polycrystalline semiconductor materials. In some embodiments, the amorphous-like structure may be formed by the addition of aluminum or zirconium compounds to a solution of cadmium salts sprayed over a heated substrate.

REFERENCES:
patent: 4143235 (1979-03-01), Duisman

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