Abstract:

Scintillating materials are used for detection and monitoring of ionizing radiation and accelerated charged particles. They are widely applied in variety of areas of modern life. In recent years the search for novel scintillating materials is driven particularly by call for new generation of detectors requiring fast timing. Such detectors are desirable in the time-of-flight techniques in medical imaging as well as high energy physics.

Lead halide perovskite nanocrystals have attracted attention as potential time taggers in scintillating heterostructures intended for fast timing. Cesium lead halide nanoparticles feature favourable properties, in particular, ultrafast scintillation decays thanks to quantum confinement effect. However, they suffer from poor chemical stability and low stopping power for ionizing radiation. The first drawback can be overcome by incorporation of nanocrystals in the polymer matrix. The second can be helped by combination of such nanocomposite with the standard bulk scintillator in resulting heterostructure.