Abstract
We have studied the photoconductivity and optical absorption of thin amorphous films of ternary chalcogenide compounds of the type MeISbX 2 VI (where Me is Na, K, Rb and XVI is either S or Se) produced by thermal evaporation in a vacuum. The band gaps were determined by various methods. A regular increase in band gaps in the films was noted as the atomic number of the alkali metal increased.
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