Wearable and flexible thin film thermoelectric module for multi-scale energy harvesting

Karthikeyan, V., Surjadi, J. U., Wong, J. C.K., Kannan, V., Lam, K.-H., Chen, X., Lu, Y. and Roy, V. A.L. (2020) Wearable and flexible thin film thermoelectric module for multi-scale energy harvesting. Journal of Power Sources, 455, 227983. (doi: 10.1016/j.jpowsour.2020.227983)

[img]
Preview
Text
211935.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

2MB

Abstract

Developing a thermoelectric generator(TEG) with shape conformable geometry for sustaining low-thermal impedance and large temperature gradient (ΔT) is fundamental for wearable and multi-scale energy harvesting applications. Here we demonstrate a flexible architectural design, with efficient thin film thermoelectric generator as a solution for this problem. This approach not only decreases the thermal impedance but also multiplies the temperature gradient, thereby increasing the power conversion efficiency (PCE) as comparable to bulk TEG. Intact thin films of Tin telluride (p-type) and Lead Telluride (n-type) are deposited on flexible substrate through physical vapor deposition and a thermoelectric module possessing a maximum output power density of 8.4 mW/cm2 is fabricated. We have demonstrated the performance of p-SnTe/n-PbTe based TEG as a flexible wearable power source for electronic gadgets, as a thermal touch sensor for real-time switching and temperature monitoring for exoskeleton applications.

Item Type:Articles
Additional Information:We acknowledge grants from the Research Grants Council of Hong Kong Special Administrative Region Project no: T42-103/16N and Environmental & Conservation Fund (ECF) project number 44/2014.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Vellaisamy, Professor Roy
Creator Roles:
Roy, V. A.L.Resources, Validation, Supervision
Authors: Karthikeyan, V., Surjadi, J. U., Wong, J. C.K., Kannan, V., Lam, K.-H., Chen, X., Lu, Y., and Roy, V. A.L.
College/School:College of Science and Engineering > School of Engineering
Journal Name:Journal of Power Sources
Publisher:Elsevier
ISSN:0378-7753
ISSN (Online):1873-2755
Published Online:09 March 2020
Copyright Holders:Copyright © 2020 Elsevier B.V.
First Published:First published in Journal of Power Sources 455:227983
Publisher Policy:Reproduced in accordance with the publisher copyright policy

University Staff: Request a correction | Enlighten Editors: Update this record