气候变化领域集成服务门户(CCPortal): Fine-control-valve of halide perovskite single crystal quality for high performance X-ray detection

CCPortal

DOI	10.1016/j.scib.2021.06.016
	Fine-control-valve of halide perovskite single crystal quality for high performance X-ray detection
	Li W.; Li H.; Song J.; Guo C.; Zhang H.; Wei H.; Yang B.
发表日期	2021
ISSN	20959273
英文摘要	Halide perovskite single crystals (HPSCs) provide a unique platform to study the optoelectronic properties of such emerging semiconductor materials, while the temperature induced crystal growth method often has an increased solute integration speed and/or unavoidable solute consumption, resulting in a soaring or slumping crystal growth rate of HPSCs. Here, we developed a universal and facile solvent-volatilization-limited-growth (SVG) strategy to finely control the crystal growth rate by the fine-control-valve for high quality crystal grown through solution processes. The grown HPSCs by SVG method exhibited a record low trap density of 2.8 × 108 cm−3 and a high charge carrier mobility-lifetime product (μτ product) of 0.021 cm2/V, indicating the excellent crystal quality. The crystal surface defects were further passivated by oxygen suppliers as Lewis base, which led to a reduction of surface leakage current by two times when using for low dose rate X-ray detection. Such HPSC X-ray detector displayed a high sensitivity of 1274 µC/(Gyair cm2) with a lowest detectable dose rate of 0.56 μGyair/s under 120 keV hard X-ray. Further applications including alloy composition analysis and metal flaw detection by HPSC detectors were also demonstrated, which not only shows the bright future for product quality inspection and non-destructive materials analysis, but also paves the way for growing high quality single crystals and fabricating polycrystalline films. © 2021 Science China Press
关键词	Crystal growth strategy Perovskite single crystal Sensitive X-ray detectors Solution-processed
英文关键词	Carrier mobility; Crystal growth; Film growth; Films; Growth rate; Perovskite solar cells; Planning; Quality control; Single crystals; Surface defects; X ray detectors; Control valves; Crystal growth rates; Crystal growth strategy; Growth method; Halide perovskites; Perovskite single crystal; Sensitive X-ray detector; Solution-processed; Solvent volatilization; X-ray detections; Perovskite
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207473
作者单位	State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China; Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Changchun, 130061, China; Department of Radiology, The First Hospital of Jilin University, Changchun, 130012, China
推荐引用方式 GB/T 7714	Li W.,Li H.,Song J.,et al. Fine-control-valve of halide perovskite single crystal quality for high performance X-ray detection[J],2021.
APA	Li W..,Li H..,Song J..,Guo C..,Zhang H..,...&Yang B..(2021).Fine-control-valve of halide perovskite single crystal quality for high performance X-ray detection.Science Bulletin.
MLA	Li W.,et al."Fine-control-valve of halide perovskite single crystal quality for high performance X-ray detection".Science Bulletin (2021).