DataVXAdvanced Optical MaterialsPaper
journal article·2023-10Open access

Cs3Cu2I5 Single Crystal for Efficient Direct X‐Ray Detection

Qinhua Wei, Xiongsheng Fan, Peng Xiang, Laishun Qin, Wenjun Liu, Tongyu Shi, Hang Yin, Peiqing Cai, Yufeng Tong, Gao Tang, Zugang Liu, Paul K. Chu, Hongsheng Shi, Yanliang Liu, Xue‐Feng Yu

Advanced Optical Materials· Volume 11· Issue 19
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Source abstract

Abstract

Abstract Low‐dimensional copper‐based halide single crystals are considered excellent scintillators for indirect X‐ray detection, but their potential in direct X‐ray detection has not been investigated. Herein, high‐quality pure Cs3Cu2I5 and Li‐doped Cs3Cu2I5:Li single crystals are grown by the Bridgman method. The Li+ dopant enhances the photoelectric properties of the Cs3Cu2I5 single crystal by extending the carrier lifetime, improving the carrier mobility from 6.49 to 9.52 cm2 V−1 s−1, and increasing the mobility‐lifetime (µτ) product from 1.4 × 10−4 to 2.9 × 10−4 cm2 V−1. The sensitive direct X‐ray detector with a vertical device configuration of Au/Cs3Cu2I5:Li single crystal/PCBM/Au is fabricated and demonstrated to have a high sensitivity of 831.1 µC Gyair−1 cm−2 and low detection limit of 34.8 nGyair s−1. Furthermore, the detector shows negligible baseline current drift and excellent stability upon X‐ray radiation.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Luminescence Properties of Advanced Materials · Chalcogenide Semiconductor Thin Films

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

Affiliations

College of Materials and Chemistry China Jiliang University Hangzhou 310018 China

Materials Interfaces Center Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen Guangdong 518055 China

College of Optical and Electronic Technology China Jiliang University Hangzhou 310018 China

State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 China

Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong 999077 China

Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences Urumqi 830011 China

Funding

National Natural Science Foundation of China

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