Broadband Detection of X-ray, Ultraviolet, and Near-Infrared Photons using Solution-Processed Perovskite-Lanthanide Nanotransducers
Broadband Detection of X-ray, Ultraviolet, and Near-Infrared Photons using Solution-Processed Perovskite-Lanthanide Nanotransducers
复制标题
使用溶液处理的钙钛矿-稀土纳米传感器对 X 射线、紫外线和近红外光子进行宽带检测。
DOI：
10.1002/adma.202101852
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发表时间：
2021-05-14
影响因子：
29.4
通讯作者：
Yang, Huanghao
中科院分区：
文献类型：
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作者：
Xie, Lili;Hong, Zhongzhu;Yang, Huanghao
溶液处理的金属卤化物钙钛矿材料在开发下一代低成本、高性能光电探测器方面前景广阔。然而，钙钛矿在近红外光谱范围以外的弱吸收对其在宽带光电探测器中的应用提出了严格的限制。本文介绍了一种上转换纳米钙钛矿型纳米换能器UCNPs的合理设计和合成，即UCNPs@mSiO(2)@MAPbX(3)(X=氯、溴或碘)，用于从X射线、UV到近红外的宽带光子探测。结果表明，通过原位晶化和有意地调节稀土核和钙钛矿中的材料组成，纳米换能器具有很高的稳定性，并对不同剂量率的X射线和不同功率密度的UV/NIR光子表现出广泛的线性响应。这一发现为探索高质量成像和光电子器件领域的下一代宽带光电探测器提供了机会。
Solution-processed metal-halide perovskites hold great promise in developing next-generation low-cost, high-performance photodetectors. However, the weak absorption of perovskites beyond the near-infrared spectral region posts a stringent limitation on their use for broadband photodetectors. Here, the rational design and synthesis of an upconversion nanoparticles (UCNPs)-perovskite nanotransducer are presented, namely UCNPs@mSiO(2)@MAPbX(3) (X = Cl, Br, or I), for broadband photon detection spanning from X-rays, UV, to NIR. It is demonstrated that, by in situ crystallization and deliberately tuning the material composition in the lanthanide core and perovskites, the nanotransducers allow for a high stability and show a wide linear response to X-rays of various dose rates, as well as UV/NIR photons of various power densities. The findings provide an opportunity to explore the next-generation broadband photodetectors in the field of high-quality imaging and optoelectronic devices.