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 journalArticlepeer-review

    264 Citations (Scopus)

    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 Gyair 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

    Bibliographical note

    Funding Information:
    This study was supported by the National Research Foundation of Korea (NRF) under the Ministry of Science, ICT & Future Planning (Basic Science Research Program (No.2014R1A5A1009799), Nano-Material Technology Development Program (No. 2017M3A7B4041696), the Technology Development Program to Solve Climate Change (No. 2015M1A2A2055631), and Global Frontier R&D Program on Center for Multiscale Energy System (No. 2012M3A6A7054855).

    Publisher Copyright:
    © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

    Keywords

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

    ASJC Scopus subject areas

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering

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