Recent Advances in Fast-Decaying Metal Halide Perovskites Scintillators

Abstract

Figure 3. (a) Schematic diagram of the self-wavelength shifting (SWS) and exciton funneling process in MHPs. (b) The absorption, PL and RL spectra of PEA 2 PbI 4 . Inset shows the PL decay curves of PEA 2 PbI 4 . (c) PL decay lifetime of PEA 2 PbI 4 . Reprinted with permission from ref 47. Copyright 2023 Springer Nature. (d) Crystal structure of 2D inorganic−organic hybrid MHPs with different ε between inorganic and organic layer. (e) Schematic illustration of selecting an organic amine with a low refractive index n can enhance exitonic dielectric confinement and obtain a fast decay lifetime. (f) Scintillation decay curves of BM 2 PbBr 4 and PEA 2 PbBr 4 under 137 Cs gamma ray. Reprinted with permission from ref 48.