Thermostimulated Luminescence in Colloidal Ag2S Quantum Dots

摘要

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.