High-Performance Next-Generation Perovskite Nanocrystal Scintillator for Nondestructive X-Ray Imaging.
basic_science · Level V
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- Record sourced from PubMed, PMID 30141200.
- Also identified by DOI 10.1002/adma.201801743.
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Abstract
Readily commercializable and cost-effective next-generation CsPbBr<sub>3</sub> perovskite nanocrystals (PNCs) based X-ray detectors are demonstrated. The PNCs-based X-ray detector exhibits higher spatial resolution (9.8 lp mm<sup>-1</sup> at modulation transfer function (MTF) = 0.2 and 12.5-8.9 lp mm<sup>-1</sup> for a linear line chart), faster response time (≈200 ns), and comparable stability (>40 Gy<sub>air</sub> s<sup>-1</sup> of X-ray exposure) compared with the commercialized terbium-doped gadolinium oxysulfide (GOS)-based detectors (spatial resolution = 6.2 lp mm<sup>-1</sup> at MTF = 0.2 and 6.3 lp mm<sup>-1</sup> 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.