Yang Yue, Dai Haitao, Yang Feng, Zhang Yating, Luo Dan, Zhang Xiaoli, Wang Kai, Sun Xiao Wei, Yao Jianquan
Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, 300072, China.
Key Laboratory of Opto-Electronics Information Technology, College of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China.
Nanoscale Res Lett. 2019 Aug 22;14(1):291. doi: 10.1186/s11671-019-3082-z.
Perovskites have attracted substantial attention on account of their excellent physical properties and simple preparation process. Here we demonstrated an improved photodetector based on solution-processing organic-inorganic hybrid perovskite CHNHPbICl layer decorated with CsPbBr perovskite quantum dots. The CHNHPbICl-CsPbBr photodetector was operated in a visible light region, which appeared high responsivity (R = 0.39 A/W), detectivity (D* = 5.43 × 10 Jones), carrier mobility (μ = 172 cm V s and μ = 216 cm V s), and fast response (rise time 121 μs and fall time 107 μs). The CHNHPbICl-CsPbBr heterostructure is anticipated to find comprehensive applications in future high-performance photoelectronic devices.
钙钛矿因其优异的物理性能和简单的制备工艺而备受关注。在此，我们展示了一种改进的光电探测器，它基于用CsPbBr钙钛矿量子点修饰的溶液处理有机-无机杂化钙钛矿CHNHPbICl层。CHNHPbICl-CsPbBr光电探测器在可见光区域工作，表现出高响应度（R = 0.39 A/W）、探测率（D* = 5.43×10琼斯）、载流子迁移率（μ = 172 cm² V⁻¹ s⁻¹和μ = 216 cm² V⁻¹ s⁻¹）以及快速响应（上升时间121 μs和下降时间107 μs）。预计CHNHPbICl-CsPbBr异质结构将在未来高性能光电器件中得到广泛应用。
