Orthorhombic Non‐Perovskite CsPbI3 Microwires for Stable High‐Resolution X‐Ray Detectors
Source abstract
Abstract
Abstract X‐ray detectors are used widely, but they suffer from short operational stability and insufficient absorptivity of X‐ray photons. Here, a strategy for room‐temperature, solution‐grown δ‐CsPbI3 monocrystalline microwires exhibiting one of the highest linear X‐ray absorption coefficients among known semiconductors is reported. In a metal–semiconductor–metal architecture, δ‐CsPbI3 demonstrates one of the lowest detectable X‐ray dose rates at 33.3 nGyair s−1, enabled by its exceptionally low dark current density of 12 pA mm−2. The detector remains stable following a continuous operation for a total accumulated dose of 1.44 × 106 Gyair, which is equivalent to 720 million chest X‐ray scans. The 1D crystalline nature of δ‐CsPbI3 enables a high X‐ray imaging resolution of 12.4 line pairs per millimeter (lp mm−1).
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Research context
OpenAlex topics: Perovskite Materials and Applications · Luminescence Properties of Advanced Materials · Advanced Semiconductor Detectors and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry University of Victoria Victoria British Columbia V8P 5C2 Canada
Department of Physics and Astronomy University of Victoria Victoria British Columbia V8P 5C2 Canada
Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology (HUST) Wuhan 430074 China
Department of Physical and Environmental Sciences University of Toronto Scarborough Scarborough M1C 1A4 Canada
Department of Electrical and Computer Engineering University of Victoria Victoria British Columbia V8P 5C2 Canada
Centre for Advanced Materials and Related Technologies (CAMTEC) University of Victoria Victoria British Columbia V8P 5C2 Canada
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