DataVXAdvanced MaterialsPaper
journal article·2026-03

Bright 2D Polar Perovskite Scintillator with Ultrafast Decay by Suppressing Free Carrier Recombination

Zizhen Bao, Xiao Ouyang, Yi Liu, Gaoyang Gou, Xiaokang Yao, Yue Zhao, Hang Yin, Yuge Zhang, Shuanma Yan, Zhihua Sun, Zhongfu An, Linyue Liu, Wei Huang, Xiaoping Ouyang

Advanced Materials· Volume 38· Issue 14
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Source abstract

Abstract

ABSTRACT High light yield and ultrafast decay time are highly demanded for scintillators in sensitive, rapid radiation detection and imaging, but both properties can hardly coexist in a scintillator so far. Herein, we report a design principle for spontaneous polarization‐enhanced scintillation in 2D organic–inorganic hybrid perovskites. As anticipated, the (4‐aminomethyl‐1‐cyclohexanecarboxylate) 2 PbBr 4 (APB) perovskite displays high light yield up to 19 660 photons/MeV and a lifetime of 0.90 ns. Combining the experimental and computational results, we demonstrate that enhancement of dielectric screening effect and suppression of free carrier recombination are responsible for the ultrafast decay time and high light yield, respectively. Moreover, the practical applications for fast neutron imaging and flash X‐ray radiography are successfully demonstrated with excellent spatial resolutions of 2.4 and 31 lp/mm, respectively. In addition, the potential for PET technique is verified by shorter CTR values than (Lu x Y 1‐x ) 2 SiO 5 : Ce (LYSO). This work will open up a new avenue for developing high‐performance ultrafast scintillators for practical applications in biomedical and nuclear detection techniques.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Luminescence and Fluorescent Materials · Radiation Detection and Scintillator Technologies

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

Affiliations

School of Physics and Astronomy Beijing Normal University Beijing P. R. China

School of Nuclear Science and Technology Xi'an Jiaotong University Xi'an P. R. China

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian P. R. China

Frontier Institute of Science and Technology State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi' an P. R. China

Institute of Flexible Electronics (IFE, Future Technologies) Xiamen University Xiamen P. R. China

School of Instrument and Electronics North University of China Taiyuan P. R. China

College of Materials and Chemistry China Jiliang University Hangzhou P. R. China

Department of Engineering Physics Tsinghua University Beijing P. R. China

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM) School of Flexible Electronics (Future Technologies) Nanjing Tech University (Nanjing Tech) Nanjing P. R. China

National Key Laboratory of Intense Pulsed Radiation Simulation and Effect Northwest Institute of Nuclear Technology Xi'an P. R. China

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) Xi'an P. R. China

Funding

National Natural Science Foundation of China · National Key Research and Development Program of China

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