ZnO nanowires based degradable high-performance photodetectors for eco-friendly green electronics

Yalagala, B. P., Dahiya, A. S. and Dahiya, R. (2023) ZnO nanowires based degradable high-performance photodetectors for eco-friendly green electronics. Opto-Electronic Advances, 6(2), 220020. (doi: 10.29026/oea.2023.220020)

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Disposable devices designed for single and/or multiple reliable measurements over a short duration have attracted considerable interest recently. However, these devices often use non-recyclable and non-biodegradable materials and wasteful fabrication methods. Herein, we present ZnO nanowires (NWs) based degradable high-performance UV photodetectors (PDs) on flexible chitosan substrate. Systematic investigations reveal the presented device exhibits excellent photo response, including high responsivity (55 A/W), superior specific detectivity (4x1014 jones), and the highest gain (8.5x1010) among the reported state of the art biodegradable PDs. Further, the presented PDs display excellent mechanical flexibility under wide range of bending conditions and thermal stability in the measured temperature range (5–50 °C). The biodegradability studies performed on the device, in both deionized (DI) water (pH≈6) and PBS solution (pH=7.4), show fast degradability in DI water (20 mins) as compared to PBS (48 h). These results show the potential the presented approach holds for green and cost-effective fabrication of wearable, and disposable sensing systems with reduced adverse environmental impact.

Item Type:Articles
Additional Information:This work is supported in part by Engineering and Physical Science Research Council (EPSRC) through Engineering Fellowship (EP/R029644/1), Hetero-print Programme Grant (EP/R03480X/1), and European Commission through grant references (H2020-MSCAITN2019-861166).
Glasgow Author(s) Enlighten ID:Dahiya, Dr Abhishek Singh and Dahiya, Professor Ravinder and Yalagala, Mr Bhavani
Authors: Yalagala, B. P., Dahiya, A. S., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Opto-Electronic Advances
Publisher:Chinese Academy of Sciences
Published Online:30 September 2022
Copyright Holders:Copyright © 2023 The Authors
First Published:First published in Opto-Electronic Advances 6(2): 220020
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
301728Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering and Physical Sciences Research Council (EPSRC)EP/R029644/1ENG - Electronics & Nanoscale Engineering
301327`Hetero-print: A holistic approach to transfer-printing for heterogeneous integration in manufacturingPeter SkabaraEngineering and Physical Sciences Research Council (EPSRC)EP/R03480X/1ENG - Electronics & Nanoscale Engineering
306720INnovative Network for Training in ToUch InteracTIVE InterfacesRavinder DahiyaEuropean Commission (EC)861166ENG - Electronics & Nanoscale Engineering