Issue 15, 2019, Issue in Progress

Laser patterned, high-power graphene paper resistor with dual temperature coefficient of resistance

Abstract

Printing of electronic devices on a paper substrate using 2D graphene-based ink is an opening gate to innovative applications, where devices would be biodegradable, eco-friendly and can be disposed of with negligible impact on the environment. A resistor is a key element of electronic devices and their application area depends upon its power rating and temperature coefficient of resistance (TCR). In this work, in house developed graphene ink is successfully utilized to fabricate a paper-based resistor using a bar coating technique. Dimensional patterning with precise known values of resistance is achieved using a laser with freedom of shape and size which has been explored for the first time on a paper substrate. The resistor has potential to handle ∼7 W power at room temperature with capacity to withstand up to 200 V which is the highest among reported printed resistors. A dual, low and high TCR is observed, correspondingly in cold (173 K to 300 K) and hot (300 K to 373 K) temperature regions with an activation energy Ea of ∼8 meV for the cold region which is 375 percent lower than the hot region (∼30 meV). The dual TCR behaviour is of great importance for application as a stable resistor up to room temperature, and as a thermistor above room temperature.

Graphical abstract: Laser patterned, high-power graphene paper resistor with dual temperature coefficient of resistance

Supplementary files

Article information

Article type
Paper
Submitted
13 Dec 2018
Accepted
18 Feb 2019
First published
12 Mar 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 8262-8270

Laser patterned, high-power graphene paper resistor with dual temperature coefficient of resistance

S. Kumar, K. Bhatt, P. Kumar, S. Sharma, A. Kumar and C. C. Tripathi, RSC Adv., 2019, 9, 8262 DOI: 10.1039/C8RA10246E

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