Campus Units

Mechanical Engineering, Materials Science and Engineering, Chemical and Biological Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

2018

Journal or Book Title

Nanoscale

DOI

10.1039/C8NR09101C

Abstract

Solution phase printing of nanomaterials is becoming increasingly important for the creation of scalable flexible electronics including those associated with biomedical and energy harvesting applications. However, the use of solution-phase printed thermoelectric energy generators (TEGs) has been minimally explored. Herein we report a highly flexible inkjet-printed TEG. Bismuth telluride (Bi2Te3) and bismuth antimony telluride (Bi0.5Sb1.5Te3) nanowires (NWs) are inkjet printed onto polyimide to form n-type and p-type legs for the TEGs. A post-print thermal annealing process is used to increase the thermoelectric performance of the printed NWs while eutectic gallium-indium (EGaIn) liquid metal contacts electrically connect the TEG legs in series. Annealing conditions for the combination of p/n legs are examined to maximize the thermoelectric efficiency of the TEG prototype. The maximum power factor was found to be 180 μW m-1K-2 and 110 μW m-1K-2 for Bi2Te3 and Bi0.5Sb1.5Te3 respectively, and a maximum power of 127 nW at a 32.5 K temperature difference. The performance of the TEG device does not diminish even after multiple bending (up to 50 times) experiments around a tight radius of curvature (rod dia. 11 mm). Hence this inkjet-printed flexible TEG is a step towards a fully functional wearable TEG device.

Comments

This is a manuscript of an article published as Chen, Bolin, Matthew Kruse, Biao Xu, Ravi Tutika, Wei Zheng, Michael Bartlett, Yue Wu, and Jonathan C. Claussen. "Flexible Thermoelectric Generators with Inkjet-Printed Bismuth Telluride Nanowires and Liquid Metal Contacts." Nanoscale (2018). DOI: 10.1039/C8NR09101C. Posted with permission.

Copyright Owner

The Royal Society of Chemistry

Language

en

File Format

application/pdf

Available for download on Sunday, December 01, 2019

Published Version

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