I have grown HgI_2 single crystal by the method of Periodic oscillation of crystal temperature. As a result of measuring the photoluminescence of this crystal at the low temperature, I observed these exciting bands and determined from the temperature ...
I have grown HgI_2 single crystal by the method of Periodic oscillation of crystal temperature. As a result of measuring the photoluminescence of this crystal at the low temperature, I observed these exciting bands and determined from the temperature dependency of the photoluminescence spectrum that the binding energy of the exciton - defect complex was 6.9 meV.