Self-Absorption-Free Perovskite X-ray Scintillators via Engineered Interfacial Energy Transfer

Shumei Wang; Jian-Xin Wang; Yafeng Xu; Lijie Wang; Qilong Feng; Guangzheng Lu; Tengjiao He; Tengyue He; Wentao Wu; Shorooq A. Alomar; Yuanfan Wen; Tulai Sun; Osama Shekhah; Mohamed Eddaoudi; Osman M. Bakr; Yihan Zhu; Omar F. Mohammed

doi:10.1021/acsenergylett.5c03558

journal article·2026-02-13

Self-Absorption-Free Perovskite X-ray Scintillators via Engineered Interfacial Energy Transfer

Shumei Wang, Jian-Xin Wang, Yafeng Xu, Lijie Wang, Qilong Feng, Guangzheng Lu, Tengjiao He, Tengyue He, Wentao Wu, Shorooq A. Alomar, Yuanfan Wen, Tulai Sun, Osama Shekhah, Mohamed Eddaoudi, Osman M. Bakr, Yihan Zhu, Omar F. Mohammed

ACS Energy Letters· Volume 11· Issue 2

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Source abstract

Abstract

Strong photon self-absorption severely limits the performance of metal–halide perovskite X-ray scintillators. Herein, we report an in situ interfacial growth strategy to construct a hybrid ZnS:Ag–FAPbBr 3 nanocrystal (NC) system embedded in a flexible PVDF matrix, enabling efficient, self-absorption-free scintillation. Density functional theory (DFT) and ultrafast spectroscopy confirm rapid Förster resonance energy transfer from ZnS:Ag to FAPbBr 3 within ∼20 ps, achieving 83% efficiency. The resulting scintillator films exhibit high imaging resolution (20-line pair/mm) and a remarkably low detection limit (166 nGy s –1 ), surpassing medical diagnostic standards by over 30 times. Moreover, the films maintain >90% emission after 604.8 Gy continuous exposure. This scalable strategy eliminates self-absorption and enhances the stability of FAPbBr 3 NCs, paving the way for robust, high-sensitivity perovskite scintillators for medical, industrial, and underwater X-ray imaging.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Luminescence Properties of Advanced Materials · Ga2O3 and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Renewable Energy and Storage Technologies (CREST), Division of Physical Sciences and Engineering

King Abdullah University of Science and Technology (KAUST)

Functional Materials Design, Discovery, and Development Research Group (FMD3), Division of Physical Sciences and Engineering

Center for Electron Microscopy, Zhejiang Key Laboratory of Surface and Interface Science and Engineering for Catalysts, China-Saudi Arabia Joint Laboratory on Microscopic Structural Engineering of Advanced Materials, State Key Laboratory of Green Technologies for Chemical Synthesis and Conversion and College of Chemical Engineering

Zhejiang University of Technology

Funding

National Key Research and Development Program of China · King Abdullah University of Science and Technology · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province

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