1977 Volume 42 Issue 5 Pages 1647-1649
The intensity of the edge emission in KI and RbI has been measured from 5 K to 100 K. The temperature dependence is interpreted in terms of a simple exciton decay model. Thermal quenching of the emission can be ascribed to the increase in the self-trapping probability of excitons. The edge emission is assumed to originate from a metastable free exciton state.
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