| Lineshape and Lifetime Studies of Exciton Luminescence from Confined CuCl Thin Films. (1998) | |||||||||
Abstract | |||||||||
| Photoluminescence studies have been performed on structures, grown by molecular beam epitaxy, with thin films of Copper Chloride (30-1200A) confined between layers of Calcium Fluoride. Excitons were formed by irradiation of these systems with UV frequencies above the CuCl bandgap, and the spectral and temporal dependences of the recombination radiation were compared to those of a bulk CuCl single crystal. We suggest a kinetic model to explain why the photoluminescence lineshapes of the free excitons in the films were characteristic of a much hotter exciton temperature and the radiative lifetimes were much shorter ( | |||||||||
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