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High-Performance Stretchable Photodetector based on CH3NH3PbI3 Microwires and Graphene

Abstract

A stretchable photodetector was fabricated by releasing a prestrained a 3M very high bond (VHB) substrate coated with perovskite CH3NH3PbI3 microwires and graphene. The light harvesting material CH3NH3PbI3 microwires were attained through a transformation from CH3NH3PbI3 bulk single crystals. The graphene served as an expressway for photo-induced carriers in perovskite. Under a very low working voltage of 0.01V bias and an 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%, 80% strain, the responsivity maintained to 0.96, 0.60, 0.21 mA·W-1 respectively. It also showed a fast photoresponse speed (< 0.12 s) after stretching 10%, 30%, 50%, 80%, even to 100%. The device kept working well after 100 cycles of stretching to 50% strain.

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Publication details

The article was accepted on 13 May 2018 and first published on 14 May 2018


Article type: Paper
DOI: 10.1039/C8NR03108H
Citation: Nanoscale, 2018, Accepted Manuscript
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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, Accepted Manuscript , DOI: 10.1039/C8NR03108H

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