A high-performance self-powered broadband photodetector based on a CH3NH3PbI3 perovskite/ZnO nanorod array heterostructure

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors

Yu, Jichao
Chen, Xu
Wang, Yi
Zhou, Hai
Xue, Mengni
Xu, Yang
Li, Zhaosong
Ye, Cong
Zhang, Jun
Van Aken, Peter A.

Date

2016

Department

Department of Applied Physics

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Mcode

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Language

en

Pages

7

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Journal of Materials Chemistry C, Volume 4, issue 30, pp. 7302-7308

Abstract

Here we report a self-powered photodetector based on a ZnO/CH3NH3PbI3 heterojunction and a MoO3 hole-transport layer. The organolead iodide perovskite photodetector is sensitive to broadband wavelengths from the ultraviolet light to the entire visible light region (250-800 nm), showing a high photo-responsivity of 24.3 A W-1 and a high detectivity value of 3.56 × 1014 cm Hz1/2 W-1 at 500 nm without external bias voltage. Meanwhile, we found that the photodetective performances are closely related to the thickness of the MoO3 layer, which acts as a hole-transport layer and an electron-blocking layer and can effectively decrease the recombination of holes and electrons. Additionally, the as-fabricated photodetector exhibits good stability and only 9.3% photoelectric response current decay after a 3-month illumination test. The high detectivity and responsivity of such a ZnO nanorod/perovskite heterojunction are clearly demonstrated and should be widely applicable to other photoelectric detection devices.

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DOI

10.1039/c6tc02097f

Citation

Yu, J, Chen, X, Wang, Y, Zhou, H, Xue, M, Xu, Y, Li, Z, Ye, C, Zhang, J, Van Aken, P A, Lund, P D & Wang, H 2016, 'A high-performance self-powered broadband photodetector based on a CH 3 NH 3 PbI 3 perovskite/ZnO nanorod array heterostructure', Journal of Materials Chemistry C, vol. 4, no. 30, pp. 7302-7308. https://doi.org/10.1039/c6tc02097f

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https://urn.fi/URN:NBN:fi:aalto-201703233192

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[article-cris] Perustieteiden korkeakoulu / SCI