Stable and Ultrasensitive X‐Ray Detectors Based on Oriented Single‐Crystal Perovskite Rods
Abstract
Abstract Metal‐halide perovskite single crystals (SCs) are promising candidates for next‐generation X‐ray detectors. X‐ray detectors fabricated using perovskite FAPbI 3 SCs exhibit high detection sensitivity. However, two pressing issues still need to be addressed for practical applications: the orientation‐controlled growth and environmentally friendly acquisition of high‐quality FAPbI 3 SCs. In this study, large high‐quality perovskite FAPbI 3 SC rods (SCRs) with unique orientation are grown using a biomass‐derived green solvent. Owing to the high carrier mobility and large bulk resistivity of the oriented FAPbI 3 SCRs, the SC detectors realize a record high X‐ray detection sensitivity (2.16 × 10 5 µC Gy −1 cm −2 ) and high sensitivity to dark current density ratio (1.93 × 10 9 Gy −1 s). Furthermore, the detectors exhibit both ultralow dark and X‐ray current drifts, as well as a detection limit of 2 nGy s −1 . These characteristics enable the detectors to achieve high‐resolution X‐ray imaging, even at dose rates as low as 12 nGy s −1 . This study not only contributes a new technical solution for low‐dose X‐ray detection, but also establishes a new approach for the low‐cost and environmentally friendly production of core materials for X‐ray detectors.
Article Details
Authors (15)
Depeng Chu
Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for, Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an China
Naiming Liu
Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for, Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an China
Shenghui Xie
Laboratory for Multiscale Mechanics and Medical Science, SV LAB, School of Aerospace Xi'an Jiaotong University Xi'an 710049 P. R. China
Yaohui Li
Jingjing Chen
School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences
Mingyue Wei
Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China
Ziyang Feng
Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for, Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an China
Lei Zhao
School of Life Sciences, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, and Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University
Binxia Jia
Yujia Jiang
Jiacheng Pi
Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory For Advanced Energy Devices Shaanxi Engineering Lab For Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an China
Ruixin Shi
Shengying Yue
State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace
Yucheng Liu
Shengzhong (Frank) Liu
Institute For Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an China