Affiliation:
1. Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin Guangxi 541004 P. R. China
2. State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
Abstract
AbstractHalide hybrid perovskites are a kind of intriguing contenders for X‐ray detection, and their low detection limits (LoDs) have played a crucial part in X‐ray safety inspection and medical examination. However, there is still a significant challenge in manufacturing perovskite X‐ray detectors with low LoDs. Herein, attributed to the bulk photovoltaic effect (BPVE) of a Dion–Jacobson (DJ) type 2D halide hybrid perovskite polar structure (3‐methylaminopropylamine)PbBr4 (1), self‐powered X‐ray detection with low detection limit is successfully realized. Specifically, the crystal‐based detector of 1 exhibits a low dark current at zero bias, which reduces the noise current (0.34 pA), leading to a low detection limit (58.3 nGyair s−1) which is two orders of magnitude lower than that of under external voltage bias. The combination of BPVE and LoDs of halide hybrid perovskite provides an efficient strategy to achieve passive X‐ray detection with low doses.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Fujian Province
National Postdoctoral Program for Innovative Talents
National Basic Research Program of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry