All-inorganic cesium lead halide perovskite nanocrystals for photodetector applications
All-inorganic cesium lead halide perovskite nanocrystals for photodetector applications
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DOI：
10.1039/c5cc08643d
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发表时间：
2016-01-01
影响因子：
4.9
通讯作者：
Lee, Jong-Soo
中科院分区：
文献类型：
--
作者：
Ramasamy, Parthiban;Lim, Da-Hye;Lee, Jong-Soo
在此，我们描述了简单，快速和可重复的卤素离子交换反应在CsPbX 3（X = Cl，Br，I）纳米晶体（NC）在室温下。通过卤素离子浓度的简单调节，这些NC的光致发光可以在整个可见光区域（425-655 nm）内调谐。首次展示了基于完全无机CsPbI 3 NCs的光电探测器器件。光电探测器表现出良好的开/关光电流比为10（5）。
Herein, we describe simple, fast and reproducible halide ion exchange reactions in CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) at room temperature. Through the simple adjustment of the halide ion concentration, the photoluminescence of these NCs can be tuned over the entire visible region (425-655 nm). Photodetector devices based on entirely inorganic CsPbI3 NCs are demonstrated for the first time. The photodetectors exhibited a good on/off photocurrent ratio of 10(5).