Nogueira, G. L., Kumar, D., Zhang, S., Alves, N. and Kettle, J. (2023) Zero waste and biodegradable zinc oxide thin-film transistors for UV sensors and logic circuits. IEEE Transactions on Electron Devices, 70(4), pp. 1702-1709. (doi: 10.1109/TED.2023.3249126)
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Abstract
Bioderived and biodegradable electronics have the capability to reduce significantly waste electrical and electronics equipment (WEEE) and can also be applied to other sectors, where degradation to benign by-products is essential, such as marine, farming, or health monitoring. Herein, the authors report biodegradable thin-film transistors (TFTs) arrays based on zinc oxide (ZnO) active layer using molybdenum (Mo) source, drain, and gate electrodes. The developed TFTs were fabricated at room temperature onto a planarized biodegradable substrate surface and achieved an Ion / Ioff ratio of ∼ 4 × 10 6 , a threshold voltage of ∼ 2.3 V, a field-effect mobility in the saturation region of 1.3 cm 2⋅ V −1⋅ s −1 , and a subthreshold swing of 0.3 V ⋅ dec −1 and show stable device performance under stability tests. Based upon the successful fabrication of the ZnO TFT array, the demonstration of a UV sensor (phototransistors mode) and simple logic circuits (inverter and both NAND and NOR gate circuits) are presented. Furthermore, a method to “control” the transience was implemented by using a printed heater that could accelerate the decomposition of material, which opens potential avenue for material recovery and zero waste products.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Kettle, Professor Jeff and Nogueira, Gabriel |
| Authors: | Nogueira, G. L., Kumar, D., Zhang, S., Alves, N., and Kettle, J. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | IEEE Transactions on Electron Devices |
| Publisher: | IEEE |
| ISSN: | 0018-9383 |
| ISSN (Online): | 1557-9646 |
| Published Online: | 07 March 2023 |
| Copyright Holders: | Copyright © 2023 IEEE |
| First Published: | First published in IEEE Transactions on Electron Devices 70(4): 1702-1709 |
| Publisher Policy: | Reproduced with the permission of the Publisher |
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