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All-Perovskite Photodetector with Fast Response.

ABSTRACT: 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 CH₃NH₃PbI_3-xCl_x layer decorated with CsPbBr₃ perovskite quantum dots. The CH₃NH₃PbI_3-xCl_x-CsPbBr₃ photodetector was operated in a visible light region, which appeared high responsivity (R = 0.39 A/W), detectivity (D* = 5.43 × 10⁹ Jones), carrier mobility (?_p = 172?cm²?V^-1 s^-1 and ?_n = 216?cm²?V^-1 s^-1), and fast response (rise time 121??s and fall time 107??s). The CH₃NH₃PbI_3-xCl_x-CsPbBr₃ heterostructure is anticipated to find comprehensive applications in future high-performance photoelectronic devices.

SUBMITTER: Yang Y

PROVIDER: S-EPMC6706520 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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All-Perovskite Photodetector with Fast Response.

Yang Yue Y Dai Haitao H Yang Feng F Zhang Yating Y Luo Dan D Zhang Xiaoli X Wang Kai K Wang Kai K Sun Xiao Wei XW Yao Jianquan J

Nanoscale research letters 20190822 1

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 CH3NH3PbI3-xClx layer decorated with CsPbBr3 perovskite quantum dots. The CH3NH3PbI3-xClx-CsPbBr3 photodetector was operated in a visible light reg ...[more]

PMID: 31441017

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