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Bio-inspired transparent MXene electrodes for flexible UV photodetectors

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Abstract

2D transition metal carbides (MXenes) have emerged as one of the representative materials for transparent electrodes of electronics, but it is still a challenge to achieve highly transparent and conductive MXene electrodes for flexible photodetectors due to the tradeoff between resistance and transmittance. Herein, we put forward a bio-inspired transparent MXene film with a high transmittance of about 90% and low sheet resistance value of around 3 Ω sq1. Moreover, thanks to the presence of various surface terminal groups, the MXene electrode's work function is adjustable via different etching processes, and in conjunction with electrospun TiO2 films a semi-transparent UV photodetector is integrated. Furthermore, the electrode and the constructed photodetector both exhibit superb flexibility which can survive 1000 bending cycles. This work not only provides a novel pathway to simultaneously improve the transmittance and conductivity of transparent electrodes, but also is available for extensive applications of optoelectronics.

Graphical abstract: Bio-inspired transparent MXene electrodes for flexible UV photodetectors

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Article information


Submitted
05 Mar 2020
Accepted
14 Apr 2020
First published
14 Apr 2020

Mater. Horiz., 2020, Advance Article
Article type
Communication

Bio-inspired transparent MXene electrodes for flexible UV photodetectors

J. Chen, Z. Li, F. Ni, W. Ouyang and X. Fang, Mater. Horiz., 2020, Advance Article , DOI: 10.1039/D0MH00394H

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