Антистоксова Люминесценция Перовскитных Нанокристаллов CsPbBr-=SUB=-3-=/SUB=- Во Фторфосфатной Стеклянной Матрице

The anti-Stokes luminescence of perovskite CsPbBr3 nanocrystals in a fluorophosphate glass matrix has been detected and experimentally studied upon optical excitation to the low-energy edge of the photoluminescence band. The intensity of anti-Stokes luminescence depends linearly on the pump power and increases rapidly with increasing temperature. A simple three-level model is proposed. It well describes the main regularities of the observed phenomenon.