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. 2020 Dec 23;14(3):341–351. doi: 10.1007/s12200-020-1064-5

Sb2Se3 film with grain size over 10 µm toward X-ray detection

Chong Wang 1,#, Xinyuan Du 1,#, Siyu Wang 1, Hui Deng 1,2, Chao Chen 1, Guangda Niu 1,✉, Jincong Pang 1, Kanghua Li 1, Shuaicheng Lu 1, Xuetian Lin 1, Haisheng Song 1, Jiang Tang 1,✉
PMCID: PMC9743949  PMID: 36637730

Abstract

Direct X-ray detectors are considered as competitive next-generation X-ray detectors because of their high spatial resolution, high sensitivity, and simple device configuration. However, their potential is largely limited by the imperfections of traditional materials, such as the low crystallization temperature of α-Se and the low atomic numbers of α-Si and α-Se. Here, we report the Sb2Se3 X-ray thin-film detector with a p-n junction structure, which exhibited a sensitivity of 106.3 µC/(Gyair·cm2) and response time of < 2.5 ms. This decent performance and the various advantages of Sb2Se3, such as the average atomic number of 40.8 and μτ product (μ is the mobility, and τ is the carrier lifetime) of 1.29 × 10−5 cm2/V, indicate its potential for application in X-ray detection.

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Keywords: X-ray detector, Sb2Se3, p-n junction, response speed, grain size

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 61725401 and 61904058), the National Key R&D Program of China (No. 2016YFA0204000), the Innovation Fund of Wuhan National Laboratory for Optoelectronics (WNLO), the National Postdoctoral Program for Innovative Talent (No. BX20190127), and China Postdoctoral Science Foundation Project (No. 2019M662623). The authors thank the Analytical and Testing Center of Huazhong University of Science and Technology (HUST) and the facility support of the Center for Nanoscale Characterization and Devices, WNLO-HUST.

Footnotes

Chong Wang is a Ph.D. candidate at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China, with a major in optical engineering. He received his Bachelor’s degree from Huazhong University of Science and Technology, China in 2015. His current research interest is novel semiconductor optoelectronic materials and devices.

Xinyuan Du received his Bachelor’s degree from Huazhong University of Science and Technology, China in 2018. He is currently pursuing a Ph.D. in optical engineering. He focuses on perovskite X-ray detection.

Siyu Wang is pursuing a master’s degree at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. She works on the material properties of antimony selenide and its optoelectronic devices.

Hui Deng received his Ph.D. degree from Huazhong University of Science and Technology, China in 2019. He worked as an assistant professor at Fuzhou University, China after graduation. He has extensive experience in thin-film materials, solar cells, and photodetectors. He has published over 30 science citation index (SCI) journal papers, and his current SCI H-index is 18.

Chao Chen received his B.Sc. degree from School of Physics, Huazhong University of Science and Technology, China in 2014. From 2014/09 to 2019/02, he studied at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China as a doctoral candidate and received his Ph.D. degree in 2019/02. Currently, he is a postdoctoral fellow at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. His research interests are thin-film solar cells and photodetectors.

Guangda Niu is an associate professor at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. He obtained his Ph.D. degree from Tsinghua University, China in 2016. His research interest is solar cells and photodetectors based on perovskite single crystal, thin films, and quantum dots.

Jincong Pang received his Bachelor’s degree from Huazhong University of Science and Technology, China in 2019, and he is currently pursuing a Ph.D. in optical engineering. He focuses on single crystal X-ray detectors.

Kanghua Li received his Bachelor’s degree from Huazhong University of Science and Technology, China in 2015. Subsequently, he joined Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China as a Ph.D. candidate. He mainly works on new inorganic photovoltaic materials and thin-film solar cells.

Shuaicheng Lu obtained his Bachelor’s degree from Huazhong University of Science and Technology, China in 2016. Thereafter, he joined Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China as a Ph.D. candidate. His research interests include quasi-one-dimensional photovoltaic semiconductors and physical characterization techniques for photovoltaic materials and devices.

Xuetian Lin is a master’ sstudentat Huazhong University of Science and Technology, China and Paris Sciences & Lettres (PSL) Research University, France. She majors in new energy science and technology at China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, China. She also majored in clean and renewable energy at PSL Research University, France. She mainly works on photovoltaic materials.

Haisheng Song received his Ph.D. degree from City University of Hong Kong, China, under the supervision of Prof. Wenjun Zhang in 2010. Thereafter, he moved to Japan and finished his postdoctoral research at National Institute for Material Science, Japan. After that, he joined Huazhong University of Science and Technology, China as an associate professor in 2012 and was promoted to full professor in 2018. His research interests include full-inorganic new conception thin-film photovoltaics, particularly the supplementary PVs for commercial Si technology, X-ray detection materials, and short-wave infrared detectors in CMOS compatible focal panel arrays.

Jiang Tang is a professor at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. He obtained his Ph.D. degree from University of Toronto, Canada in 2010. His research interest is optoelectronic devices, including X-ray and infrared detectors, thin-film solar cells, and light-emitting diodes. He has published over 150 papers, filed over 30 patents, and received the funding from the National Natural Science Foundation of China.

These authors contributed equally to this work.

Contributor Information

Guangda Niu, Email: guangda_niu@mail.hust.edu.cn.

Jiang Tang, Email: jtang@mail.hust.edu.cn.

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