García Núñez, C. , Vilouras, A. , Navaraj, W. T., Liu, F. and Dahiya, R. (2018) ZnO nanowires based flexible UV photodetector system for wearable dosimetry. IEEE Sensors Journal, 18(19), pp. 7881-7888. (doi: 10.1109/JSEN.2018.2853762)
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Abstract
This paper presents a flexible ultraviolet (UV) photodetector (PD) system based on zinc oxide (ZnO) nanowires (NWs) for wearable UV dosimetry. High-crystal quality ZnO NWs have been synthesized by chemical vapour transport (CVT) technique on c-plane sapphire substrates, and thereafter, transferred and aligned at pre-defined locations on a flexible substrate using dielectrophoresis (DEP). The accurate control over DEP parameters permitted the fabrication of large-area (wafer scale) arrays of ZnO NWs based UV PDs. Resulting PDs showed photocurrent-to-dark current ratios above 103%, fast response times (<1 s), high sensitivity to different UV light intensities, and good stability under several UV/dark irradiation cycles. In addition, above PDs presented a robust response under extreme bending conditions, which is critical for their application in high-performance wearable UV dosimeters.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Vilouras, Anastasios and Liu, Mr Fengyuan and Dahiya, Professor Ravinder and Garcia Nunez, Dr Carlos and Navaraj, Mr William |
Authors: | García Núñez, C., Vilouras, A., Navaraj, W. T., Liu, F., and Dahiya, R. |
College/School: | College of Science and Engineering College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering College of Science and Engineering > School of Engineering > Systems Power and Energy |
Journal Name: | IEEE Sensors Journal |
Publisher: | IEEE |
ISSN: | 1530-437X |
ISSN (Online): | 1530-437X |
Published Online: | 11 July 2018 |
Copyright Holders: | Copyright © 2018 IEEE |
First Published: | First published in IEEE Sensors 18(19): 7881-7888 |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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