Thermostimulated Luminescence in Colloidal Ag2S Quantum Dots
2018
Temperature properties of recombination IR luminescence (1240 nm) for ensembles of colloidal Ag2S quantum dots with an average size of 3.6 ± 0.5 nm have been investigated in gelatin. Thermostimulated luminescence, resulting from varying temperatures and at continuous photoexcitation of colloidal Ag2S quantum dots, has been detected. A peak of thermolumination has been found at the temperature region of 100–240 K, which is maintained by two components, the presence of which is by the existence of two types of hole trap states with depths of 0.07 and 0.09 eV.
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