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Issue 22, 2018
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High-performance stretchable photodetector based on CH3NH3PbI3 microwires and graphene

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Abstract

A stretchable photodetector was fabricated by releasing a prestrained 3 M very high bond (VHB) substrate coated with perovskite CH3NH3PbI3 microwires and graphene. The light harvesting CH3NH3PbI3 microwires were realized through a transformation from CH3NH3PbI3 bulk single crystals. Graphene served as an expressway for photoinduced carriers in the perovskite. Under a very low working voltage bias of 0.01 V and irradiance power of 13.5 mW cm−2 under 785 nm laser illumination, the responsivity could be as high as 2.2 mA W−1. When the device was stretched up to 30%, 50%, and 80% strain, the responsivity was maintained at 0.96, 0.60, and 0.21 mA W−1, respectively. It also showed a fast photoresponse (<0.12 s) after stretching to 10%, 30%, 50%, 80%, and even to 100%. The device performed well after 100 cycles of stretching to 50% strain.

Graphical abstract: High-performance stretchable photodetector based on CH3NH3PbI3 microwires and graphene

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Publication details

The article was received on 17 Apr 2018, accepted on 13 May 2018 and first published on 14 May 2018


Article type: Paper
DOI: 10.1039/C8NR03108H
Citation: Nanoscale, 2018,10, 10538-10544
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    High-performance stretchable photodetector based on CH3NH3PbI3 microwires and graphene

    J. Ding, H. Fang, Z. Lian, Q. Lv, J. Sun and Q. Yan, Nanoscale, 2018, 10, 10538
    DOI: 10.1039/C8NR03108H

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