Process for the production of sintered films of Cd.sub.1-x Zn.su

Details Process for the production of sintered films of Cd.sub.1-x Zn.su Process for the production of sintered films of Cd.sub.1-x Zn.su

1988-03-18

1989-05-09

Silverberg, Sam

Coating processes

Electrical product produced

Photoelectric

136260, H01C 3100

Patent

active

048288756

ABSTRACT:
Sintered films of Cd.sub.1-x Zn.sub.x S (0.ltoreq.x<1) with high optical transmittance are provided. These films are produced by applying a paste composed of powdered CdS and CdCl.sub.2 or of a mixture of CdS, ZnS and CdCl.sub.2 onto an appropriate substrate such as borosilicate glass, under an inert gas atmosphere containing ZnCl.sub.2 vapor or thereafter resintering the paste on the substrate under a nitrogen atmosphere.
The ZnCl.sub.2 vapor is produced by heating ZnCl.sub.2 at 400.degree. C. or higher but below the temperature of 500.degree.-700.degree. C. to which the specimen is heated.
The resulting sintered films have optical transmittance of 80% at long wavelength ranges or higher and can be used as a window layer having a superior optical transmittance in solar cells.

REFERENCES:
19th IEEE Photovoltaic Specialist Conf., New Orleans, LA, 5/4-8 1987, Pub. 10/87.

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