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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 CH3NH3PbI3-xClx layer decorated with CsPbBr3 perovskite quantum dots. The CH3NH3PbI3-xClx-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 CH3NH3PbI3-xClx-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 CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Cl<sub>x</sub> layer decorated with CsPbBr<sub>3</sub> perovskite quantum dots. The CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Cl<sub>x</sub>-CsPbBr<sub>3</sub> photodetector was operated in a visible light reg  ...[more]

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