Nucleation-controlled growth of superior lead-free perovskite CsBiI single-crystals for high-performance X-ray detection.

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ID: 106555
2020
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Abstract
The organic-inorganic hybrid lead halide perovskites have emerged as a series of star materials for solar cells, lasers and detectors. However, the issues raised by the toxic lead element and marginal stability due to the volatile organic components have severely limited their potential applications. In this work, we develop a nucleation-controlled solution method to grow large size high-quality CsBiI perovskite single crystals (PSCs). Using the technique, we harvest some centimeter-sized single crystals and achieved high device performance. We find that X-ray detectors based on PSCs exhibit high sensitivity of 1652.3 μC Gy cm and very low detectable dose rate of 130 nGy s, both desired in medical diagnostics. In addition, its outstanding thermal stability inspires us to develop a high temperature X-ray detector with stable response at up to 100 °C. Furthermore, PSCs exhibit high X-ray imaging capability thanks to its negligible signal drifting and extremely high stability.
Reference Key
zhang2020nucleationcontrollednature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhang, Yunxia;Liu, Yucheng;Xu, Zhuo;Ye, Haochen;Yang, Zhou;You, Jiaxue;Liu, Ming;He, Yihui;Kanatzidis, Mercouri G;Liu, Shengzhong Frank;
Journal Nature communications
Year 2020
DOI
10.1038/s41467-020-16034-w
URL
Keywords
atomic force microscopy image pixel hysteresis model measurement accuracy

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