Graphene-enhanced screen-printed BiFeO3-based thermistors

Fourmont, Paul, Bai, Yin, Fortier, François-Xavier and Cloutier, Sylvain G.. 2022. « Graphene-enhanced screen-printed BiFeO3-based thermistors ». ACS Applied Electronic Materials, vol. 4, nº 12. pp. 5905-5913.
Compte des citations dans Scopus : 5.

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Abstract

In this study, serigraphic-grade BiFeO3-based ink formulations are produced and then mixed with graphene to enhance the performances of screen-printed thermistor devices. The devices are printed atop a standard thermally-boosted glass-reinforced epoxy (FR-4) substrate coated with interdigitated gold electrodes. The broader operating temperature range of these thermistors makes them compatible with standard printed circuit boards (PCBs) manufacturing and operating conditions. Thus, we achieve highly-sensitive devices with a temperature coefficient of resistance (TCR) of -0.96 %/°C, which is the highest sensitivity reported yet for any graphene-based thermistor operating from 25 to 170 °C. The best performing devices are loaded with 3.5 wt.% graphene. These low-hysteresis and stable thermistors boast a thermal index (β- coefficient) of 864 K. This optimal graphene loading occurs just above the percolation threshold.

Item Type:	Peer reviewed article published in a journal
Professor:	Professor Cloutier, Sylvain G.
Affiliation:	Génie électrique
Date Deposited:	17 Nov 2022 14:41
Last Modified:	05 Jan 2024 14:50
URI:	https://espace2.etsmtl.ca/id/eprint/25847

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