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首页> 外文期刊>Nature photonics >Highly sensitive X-ray detector made of layered perovskite-like (NH4)(3)Bi2I9 single crystal with anisotropic response
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Highly sensitive X-ray detector made of layered perovskite-like (NH4)(3)Bi2I9 single crystal with anisotropic response

机译：高敏感的X射线检测器由层状钙钛矿（NH4）（3）Bi2i9单晶，具有各向异性反应

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摘要

The effective detection of X-ray radiation with low threshold is essential to many medical and industrial applications. Three-dimensional (3D) organolead trihalide and double perovskites have been shown to be suitable for direct X-ray detection. However, the sensitivity and stability of 3D perovskite X-ray detectors are limited by ion motion, and there remains a demand to develop green and stable X-ray detectors with high sensitivity and low detection limit. The emerging low-dimensional perovskites have shown promising optoelectronic properties, featuring good intrinsic stability and reduced ion migration. Inspired by this, we show that our 2D layered perovskite-like (NH4)(3)Bi2I9 device provides unique anisotropic X-ray detecting performance with different crystal directions, effective suppression of ion migration and a low detection limit of 55 nGy(air) s(-1). These results will motivate new strategies to achieve a high-performance X-ray detector by utilizing 2D layered perovskite or perovskite-like materials, without requiring toxic elements.
机译：有效地检测低阈值的X射线辐射对于许多医学和工业应用是必不可少的。已经显示三维（3D）青色三际和双钙酸盐适用于直接X射线检测。然而，3D PEROVSKITE X射线检测器的灵敏度和稳定性受到离子运动的限制，并且仍然需要开发具有高灵敏度和低检测限的绿色和稳定的X射线检测器。新出现的低维钙钛矿已经示出了有前途的光电性能，具有良好的内在稳定性和降低的离子迁移。灵感来自于此，我们表明我们的2D分层钙钛矿（NH4）（3）Bi2i9器件提供了独特的各向异性X射线检测性能，具有不同的晶体方向，有效地抑制离子迁移和55岁（空气）的低检测限。 s（-1）。这些结果将激发新的策略来实现高性能X射线探测器，通过使用2D层钙钛矿或类似钙钛矿材料，而不需要有毒元素。

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  • 来源
    《Nature photonics》 |2019年第9期|共8页
  • 作者

    Zhuang Renzhong; Wang Xueji; Ma Wenbo; Wu Yuhao; Chen Xu; Tang Longhua; Zhu Haiming; Liu Jiyong; Wu Lingling; Zhou Wei; Liu Xu; Yang Yang (Michael);

  • 作者单位

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Ctr Chem High Performance &

    Novel Mat Dept Chem Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Ctr Chem High Performance &

    Novel Mat Dept Chem Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Ctr Chem High Performance &

    Novel Mat Dept Chem Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Ctr Chem High Performance &

    Novel Mat Dept Chem Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Coll Opt Sci &

    Engn State Key Lab Modern Opt Instrumentat Hangzhou Zhejiang Peoples R China;

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  • 正文语种 eng
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