DataVXACS Applied Materials & InterfacesPaper
journal article·2021-03-17

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu2I3 Perovskite Single Crystal for Radiation Detection

Shuangliang Cheng, Alena Beitlerova, Romana Kucerkova, Eva Mihokova, Martin Nikl, Zhengyang Zhou, Guohao Ren, Yuntao Wu

ACS Applied Materials & Interfaces· Volume 13· Issue 10
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Source abstract

Abstract

A novel all-inorganic CsCu2I3 single-crystalline perovskite as a nonhygroscopic and efficient X-ray and γ-ray scintillator is described herein. It is featured by a one-dimensional (1D) perovskite structure with an orthorhombic system and a space group of Cmcm. The CsCu2I3 crystal emits yellow light peaking at 570 nm originated from strongly localized 1D exciton emission. It appears self-absorption free because of the large Stokes shift of 1.54 eV. The photophysics process of the self-trapped exciton was studied using temperature dependent photoluminescene spectra and decay kinetics measurements. The CsCu2I3 crystal exhibits an extremely low afterglow level of 0.008% at 10 ms under X-ray excitation. Under 137Cs γ-ray irradiation, its light yield is 16 000 photons/MeV with an energy resolution of 7.8% at 662 keV.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Luminescence Properties of Advanced Materials · Radiation Detection and Scintillator Technologies

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

Affiliations

Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He-shuo Road, Shanghai 201899, P. R. China

University of Shanghai for Science and Technology, 516 Jun-gong Road, Shanghai 200093, P. R. China

Institute of Physics of the Czech Academy of Sciences, Cukrovarnicka 10/112, Prague 16200, Czech Republic

Funding

Natural Science Foundation of Shanghai · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · European Structural and Investment Funds and the Czech MEYS · Major Programs of Shanghai Zhangjiang Special Development Foundation

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