Nano-Micro Letters (Apr 2024)

Metal-Halide Perovskite Submicrometer-Thick Films for Ultra-Stable Self-Powered Direct X-Ray Detectors

  • Marco Girolami,
  • Fabio Matteocci,
  • Sara Pettinato,
  • Valerio Serpente,
  • Eleonora Bolli,
  • Barbara Paci,
  • Amanda Generosi,
  • Stefano Salvatori,
  • Aldo Di Carlo,
  • Daniele M. Trucchi

DOI
https://doi.org/10.1007/s40820-024-01393-6
Journal volume & issue
Vol. 16, no. 1
pp. 1 – 22

Abstract

Read online

Highlights Self-powered direct X-ray detectors, based on FAPbBr3 255-nm-thick films deposited onto mesoporous TiO2 scaffolds, can withstand a 26-day uninterrupted X-ray exposure with negligible signal loss, demonstrating ultra-high operational stability. Bulk specific sensitivity is evaluated to be 7.28 C Gy−1 cm−3 at 0 V, an unprecedented value in the field of thin-film-based photoconductors and photodiodes for “hard” X-rays. Sensitivity of submicrometer-thick perovskite films to the X-rays produced by a medical linear accelerator used for cancer treatment is here demonstrated for the first time.

Keywords