FIELD: chemistry.
SUBSTANCE: PbSnSe substitution solid solution films are highly requested by solid-state electronics and middle and far infrared lasers. However, the current tin content in hydrochemically synthesised PbSnSe films cannot provide their far infrared light-sensitivity completely. According to the making PbSnSe substitution solid solution films by ion exchange process, -prepared PbSe films are processed in an aqueous solution of tin (II) salt solution containing soluble acetate or acetic acid in an amount of 6.0 mole/l or less at a process temperature of 353-371 K that is followed by the air treatment at a temperature from 523 to 723 K.
EFFECT: technical effect of the invention consists in a shift of the spectral light-sensitivity range of PbSnSe solid solution films prepared on an aqueous solution by ion-exchange process in the far infrared range.
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