| 摘要 |
<p>A non-conductive substrate is provided with a photo-conductive semi-conductor film by heating the substrate to between 80 DEG and 400 DEG C. and spraying on to its surface, under ambient temperature conditions, a solution of substances which intereact on the substrate surface to product an adherent micro-crystalline semi-conductor film. Suitable elements are those of Group Ia; IIb; IIIa; IIIb; IVa; Va; VIa; and VIII, also copper, selenium, silver, sulphur, lead and arsenic in any combination. An example of the preparation of a cadmium selenide film is described starting with an aqueous solution of cadmium acetate and N,N-dimethylselenourea and various examples of semi-conductive films produced from different combinations of elements are given in tubular form. Decomposable S and Se compounds mentioned are alkyl thioureas, alkyl selenoureas, thiourea, selenourea, thioacetamide, thiosemicarboxide and thioacetic acid. Their use with soluble salts of at least one of the elements cadmium, copper, zinc, silver, indium, gallium, gadolinium, samorium, lead, arsenic and cobalt is mentioned.ALSO:A non-conductive substrate is provided with a photo-conductive semi-conductor film by heating the substrate to between 80 and 400 DEG C. and spraying on to its surface, under ambient temperature conditions, a solution of substances which interact on the substrate surface to produce an adherent micro-crystalline semi-conductor film. Suitable elements are those of Group IA, IIB, IIIA, IIIB, IVA, VA and VIII, also copper, selenium, silver, sulphur, lead and arsenic in any combination. An example of the preparation of a cadmium selenide film is described starting with an aqueous solution of cadmium acetate and N,N-dimethylselenourea, and various examples of semi-conductive films produced from different combinations of elements are given in tabular form. Decomposable S and Se compounds mentioned are alkyl thioreas, alkyl selenoureas, thiourea, selenourea, thioacetamide, thiosemicarboxide and thioacetic acid. Their use with soluble salts of at least one of the elements cadmium, copper; zinc, silver, indium, gallium, gadolinium, samorium, lead, arsenic and cobalt is mentioned.</p> |
