Recent progress in single crystal perovskite X-ray detectors

Passivation of Organic–Inorganic Hybrid Perovskite with Poly(lactic Acid) to Achieve Stable Red-Light Flexible Films

“…6,7 Organic−inorganic hybrid perovskites (OIHPs) have received extensive research interest due to their easy synthesis, low cost and defect density, high optical absorption coefficient and carrier mobility, good solution processability, and long carrier diffusion length. 8,9 In particular, lowdimensional OIHPs with the strong quantum confinement effect at the molecular level have unique emission characteristics, such as adjustable band gap, large Stokes shift, and high photoluminescence quantum yields in the visible spectral range. 10,11 Recently, OIHPs have displayed greater potential than traditional scintillators in X-ray applications because of their strong X-ray absorption, low X-ray detection limit, and high energy conversion efficiency.…”

“…X-ray detectors have attracted attention because of their wide application in medical diagnosis, industrial nondestructive detection, safety inspection, space exploration, and other fields. − The traditional scintillator materials used in commercial X-ray detectors are mostly inorganic crystals, such as NaI:TI, CsI:TI, Bi 4 Ge 3 O 12 , and CdWO 4 . , However, these materials suffer from high process cost, complicated synthesis, difficulty in large-size preparation, and poor moisture resistance. , Organic–inorganic hybrid perovskites (OIHPs) have received extensive research interest due to their easy synthesis, low cost and defect density, high optical absorption coefficient and carrier mobility, good solution processability, and long carrier diffusion length. , In particular, low-dimensional OIHPs with the strong quantum confinement effect at the molecular level have unique emission characteristics, such as adjustable band gap, large Stokes shift, and high photoluminescence quantum yields in the visible spectral range. , Recently, OIHPs have displayed greater potential than traditional scintillators in X-ray applications because of their strong X-ray absorption, low X-ray detection limit, and high energy conversion efficiency. , Modern medical X-ray imaging techniques use charge-coupled devices (CCDs) to receive optical signals, and the main spectral response peaks of CCDs are in the range of 600–700 nm. As a result, the use of red light-emitting scintillators can effectively improve the quality of imaging.…”