High-Performance Next-Generation Perovskite Nanocrystal Scintillator for Nondestructive X-Ray Imaging

Jin Hyuck Heo, Dong Hee Shin, Jin Kyoung Park, Do Hun Kim, Sang Jin Lee, Sang Hyuk Im

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Readily commercializable and cost-effective next-generation CsPbBr 3 perovskite nanocrystals (PNCs) based X-ray detectors are demonstrated. The PNCs-based X-ray detector exhibits higher spatial resolution (9.8 lp mm −1 at modulation transfer function (MTF) = 0.2 and 12.5–8.9 lp mm −1 for a linear line chart), faster response time (≈200 ns), and comparable stability (>40 Gy air s −1 of X-ray exposure) compared with the commercialized terbium-doped gadolinium oxysulfide (GOS)-based detectors (spatial resolution = 6.2 lp mm −1 at MTF = 0.2 and 6.3 lp mm −1 for a linear line chart, response time = ≈1200 ns) because the PNCs-based scintillator has ≈5.6-fold faster average photoluminescence lifetime and stronger emission than the GOS-based one.

Original languageEnglish
Article number1801743
JournalAdvanced Materials
Volume30
Issue number40
DOIs
Publication statusPublished - 2018 Oct 4

Keywords

  • cesium lead tribromide
  • nanocrystals
  • perovskite
  • scintillators
  • X-ray imaging

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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