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All-inorganic Perovskite CsPbBr3-Based Self-Powered Light-Emitting Photodetectors with ZnO Hollow Balls as an Ultraviolet Response Center

Abstract

Self-powered light emitting photodetectors (SLEPs) can simultaneously transmit and receive information through light, behaving a huge application prospect in interactive communication systems. However, high-performance SLEPs are very hard to be obtained due to the seriously contradictory principles of carriers transport in SLEPs. In this paper, a novel structure based on ZnO hollow balls/CsPbBr3 heterojunction, in which ZnO hollow balls functioned as an ultraviolet (UV) response center and CsPbBr3 designed to be the green light emitting material, is reported as a high-performance SLEP. Due to the ZnO hollow balls behaving superior light trapping characteristics for UV light, the device shows a huge UV response with the on/off ratio and the detectivity up to 16527 and 2.4×1013 Jones, respectively. Also it displays the blue emission with a low turn-on voltage because of the CsPbBr3. Compared with traditional ZnO/GaN structure devices, the device showed enhanced dual-functional performance at various wavelength because of the insert of CsPbBr3, which results in a better contact interface and the green-light emission center. Our structure separating the light-responsive and emitting active regions avoids the contradictory principles of carrier transport, which may be a new access to gain high-performance dual-functional devices.

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Publication details

The article was received on 26 Feb 2018, accepted on 11 Apr 2018 and first published on 17 Apr 2018


Article type: Communication
DOI: 10.1039/C8TC00978C
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    All-inorganic Perovskite CsPbBr3-Based Self-Powered Light-Emitting Photodetectors with ZnO Hollow Balls as an Ultraviolet Response Center

    Z. Song, H. Zhou, P. Gui, X. Yang, R. Liu, G. Ma, H. Wang and G. Fang, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC00978C

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