Perovskite CsPbBr3Single Crystal Detector for High Flux X-Ray Photon Counting

Lei Pan, Yihui He, Vladislav V. Klepov, Michael C. De Siena, Mercouri G. Kanatzidis

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

X-ray photon-counting detectors capable of resolving the energies of single X-ray photons are critical in medical imaging, and a high count rate is essential for photon-counting detectors. Here, we report the performance of the perovskite CsPbBr3 single-crystal semiconductor detector for X-ray photon counting. The CsPbBr3 detector noise floor, energy response linearity, energy resolution, count rate, and polarization were evaluated. By fine-tuning the detector working conditions, our CsPbBr3 detector with a planar electrode can count an incident X-ray photon rate of 0.099 and 0.336 Mcps/pixel at 10% and 30% deadtime loss, respectively, with corresponding energy resolutions of 18% at 59.5 keV and 12% at 122 keV at same pulse processing conditions. We also demonstrated that our CsPbBr3 detectors show negligible polarization under an X-ray flux of 0.45 M photons/s/mm2 for the typical timescale of multiple clinical X-ray scans, such as 1 s- 100 s. Our evaluation demonstrates the high potential of CsPbBr3 detectors for X-ray photon-counting applications in medical and industrial diagnostics with a lower cost than the current state-of-the-art.

Original languageEnglish (US)
Pages (from-to)3053-3061
Number of pages9
JournalIEEE Transactions on Medical Imaging
Volume41
Issue number11
DOIs
StatePublished - Nov 1 2022

Keywords

  • Count rate
  • X-ray photon counting
  • energy resolution
  • perovskite CsPbBr3
  • polarization

ASJC Scopus subject areas

  • Software
  • Radiological and Ultrasound Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering

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