LaF3:Ce/CdTe nanocomposites for radiation detection application

Radiation detection demands new scintillators with high quantum efficiency, high energy resolution, and short luminescence lifetimes. Nanocomposites consisting of quantum dots and Ce$^{3+}$ doped nanophosphors may be able to meet these requirements. Here, we report the luminescence enhancement of LaF$_{3}$:Ce/CdTe nanocomposites which were synthesized by a wet chemistry method. The results show that CdTe luminescence in LaF$_{3}$:Ce/CdTe nanocomposites is enhanced about five times. Energy transfer, light reabsorption, and defect passivation are the likely reasons for the luminescence enhancement