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

doi:10.1002/adom.202300247

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^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

26 Citations (Scopus)

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 Gy_air⁻¹ cm⁻² and low detection limit of 34.8 nGy_air s⁻¹. Furthermore, the detector shows negligible baseline current drift and excellent stability upon X-ray radiation. © 2023 Wiley-VCH GmbH.

Original language	English
Article number	2300247
Journal	Advanced Optical Materials
Volume	11
Issue number	19
Online published	28 Jun 2023
DOIs	https://doi.org/10.1002/adom.202300247
Publication status	Published - 4 Oct 2023

Funding

Q.W. and X.F. contributed equally to this work.The authors acknowledge the financial support provided by the National Natural Science Foundation of China (NSFC) (no. 12275262, 21975280, 62004091, and 12235006), the Natural Science Foundation of Zhejiang (no. Z23E020002 and LGG22E020001), the Shenzhen Excellent Science and Technology Innovation Talent Training Project-Outstanding Youth Project (RCJC20200714114435061), the Shenzhen Basic Research Program (JCYJ20200109115212546), the Chinese Academy of Sciences Special Research Assistant Project (Y95909), and the Chinese Academy of Sciences Excellent Youth Innovation Fund grade B (E2G0161001). The City University of Hong Kong Donation Research Grant (DON-RMG 9229021), the City University of Hong Kong Donation Grant (9220061), the Hong Kong PDFS – RGC Postdoctoral Fellowship Scheme (PDFS2122-1S08 and CityU 9061014), as well as Hong Kong HMRF (Health and Medical Research Fund) (2120972 and CityU 9211320) are acknowledged. The authors also acknowledge Professor Jiang Tang of Huazhong University of Science and Technology for his useful advice.

Research Keywords

copper-based halides
Cs3Cu2I5:Li single crystal
direct X-ray detection
semiconductors

RGC Funding Information

RGC-funded

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10.1002/adom.202300247

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@article{de367fdb4b114596ac0fc1744280db47,

title = "Cs3Cu2I5 Single Crystal for Efficient Direct X-Ray Detection",

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. {\textcopyright} 2023 Wiley-VCH GmbH.",

keywords = "copper-based halides, Cs3Cu2I5:Li single crystal, direct X-ray detection, semiconductors",

author = "Qinhua Wei and Xiongsheng Fan and Peng Xiang and Laishun Qin and Wenjun Liu and Tongyu Shi and Hang Yin and Peiqing Cai and Yufeng Tong and Gao Tang and Zugang Liu and Chu, \{Paul K.\} and Hongsheng Shi and Yanliang Liu and Xue-Feng Yu",

year = "2023",

month = oct,

day = "4",

doi = "10.1002/adom.202300247",

language = "English",

volume = "11",

journal = "Advanced Optical Materials",

issn = "2195-1071",

publisher = "John Wiley \& Sons",

number = "19",

}

TY - JOUR

T1 - Cs3Cu2I5 Single Crystal for Efficient Direct X-Ray Detection

AU - Wei, Qinhua

AU - Fan, Xiongsheng

AU - Xiang, Peng

AU - Qin, Laishun

AU - Liu, Wenjun

AU - Shi, Tongyu

AU - Yin, Hang

AU - Cai, Peiqing

AU - Tong, Yufeng

AU - Tang, Gao

AU - Liu, Zugang

AU - Chu, Paul K.

AU - Shi, Hongsheng

AU - Liu, Yanliang

AU - Yu, Xue-Feng

PY - 2023/10/4

Y1 - 2023/10/4

N2 - 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. © 2023 Wiley-VCH GmbH.

AB - 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. © 2023 Wiley-VCH GmbH.

KW - copper-based halides

KW - Cs3Cu2I5:Li single crystal

KW - direct X-ray detection

KW - semiconductors

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DO - 10.1002/adom.202300247

M3 - RGC 21 - Publication in refereed journal

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VL - 11

JO - Advanced Optical Materials

JF - Advanced Optical Materials

IS - 19

M1 - 2300247

ER -

Cs₃Cu₂I₅ Single Crystal for Efficient Direct X-Ray Detection

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Research Keywords

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DON_RMG: Fabrication, Characterization, and Properties of Functional Materials - RMGS

DON: Surface Modification and Fabrication of Advanced Materials

HMRF: Biocompatible Titanium Implants with Antibacterial Capability Arising from the Synergistic Effects of Mechanical and Electrical Interactions and Quantitative Bacteria Sensing Ability Based on Electron Transfer

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Cs3Cu2I5 Single Crystal for Efficient Direct X-Ray Detection

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

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Projects

DON_RMG: Fabrication, Characterization, and Properties of Functional Materials - RMGS

DON: Surface Modification and Fabrication of Advanced Materials

HMRF: Biocompatible Titanium Implants with Antibacterial Capability Arising from the Synergistic Effects of Mechanical and Electrical Interactions and Quantitative Bacteria Sensing Ability Based on Electron Transfer

Cite this

Cs₃Cu₂I₅ Single Crystal for Efficient Direct X-Ray Detection