Method for preparing a photoconductive powder

Details Method for preparing a photoconductive powder Method for preparing a photoconductive powder

1975-08-27

1977-06-14

Miller, Edward A.

Compositions

Electrically conductive or emissive compositions

Light sensitive

96 18, H01L 3100

Patent

active

040296040

ABSTRACT:
This invention provides a method for preparing a photoconductive powder comprising firing a combined starting mixture of CdSe, ZnS, ZnO, a Cu or Ag salt, and a Cd or Zn chloride or bromide as a flux, and preferably a Mn salt also, at a temperature higher than the melting point of the flux, cooling the fired product, and re-firing the cooled product in a sulfur vapor containing atmosphere. The photoconductive powder obtained by this method has high photosensitivity, high threshold voltage and fine particle size.

REFERENCES:
patent: 3647430 (1972-03-01), Hanada et al.
patent: 3658523 (1972-04-01), Noe
patent: 3703594 (1972-11-01), Shigeaki et al.
patent: 3930854 (1976-01-01), Jones et al.

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