Methods for improving solar cell open circuit voltage

Details Methods for improving solar cell open circuit voltage Methods for improving solar cell open circuit voltage

1977-11-30

1979-12-11

Esposito, Michael F.

Coating processes

Electrical product produced

Photoelectric

427 87, 427 88, 427123, 427125, 427248R, 427343, 427377, 427430B, 29572, 204 52R, 136 89TF, 136 89CC, 136 89CD, H01L 3118, H01L 3106

Patent

active

041783956

ABSTRACT:
A method for producing a solar cell having an increased open circuit voltage. A layer of cadmium sulfide (CdS) produced by a chemical spray technique and having residual chlorides is exposed to a flow of hydrogen sulfide (H.sub.2 S) heated to a temperature of 400.degree.-600.degree. C. The residual chlorides are reduced and any remaining CdCl.sub.2 is converted to CdS. A heterojunction is formed over the CdS and electrodes are formed. Application of chromium as the positive electrode results in a further increase in the open circuit voltage available from the H.sub.2 S-treated solar cell.

REFERENCES:
patent: 3148084 (1964-09-01), Hill et al.
patent: 3472690 (1969-10-01), Hill
patent: 3880632 (1975-04-01), Jordan
patent: 3902920 (1975-09-01), Jordan
patent: 3988167 (1976-10-01), Kressell
patent: 4039357 (1977-08-01), Bachmann
Sorum, Introduction to Semimicro Qualitative Anal., Prentice Hall Inc. (N.J.) (1949) p. 5.

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