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

doi:10.1002/adma.201801743

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

Adv Mater. 2018 Aug 23:e1801743. doi: 10.1002/adma.201801743. Online ahead of print.

Authors

Jin Hyuck Heo¹, Dong Hee Shin¹, Jin Kyoung Park¹, Do Hun Kim¹, Sang Jin Lee¹, Sang Hyuk Im¹

Affiliation

¹ Department of Chemical and Biological engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 17104, Republic of Korea.

PMID: 30141200
DOI: 10.1002/adma.201801743

Abstract

Readily commercializable and cost-effective next-generation CsPbBr₃ 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.

Keywords: X-ray imaging; cesium lead tribromide; nanocrystals; perovskite; scintillators.