Optothermotronic effect as an ultrasensitive thermal sensing technology for solid-state electronics

Dinh, T. ORCID: https://orcid.org/0000-0002-7489-9640 and Nguyen, T. and Foisal, A. R. M. and Phan, H.-P. and Nguyen, T.-K. and Nguyen, N.-T. and Dao, D. V. (2020) Optothermotronic effect as an ultrasensitive thermal sensing technology for solid-state electronics. Science Advances, 6 (22):eaay2671. pp. 1-9.

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Abstract

The thermal excitation, regulation, and detection of charge carriers in solid-state electronics have attracted great attention toward high-performance sensing applications but still face major challenges. Manipulating thermal excitation and transport of charge carriers in nanoheterostructures, we report a giant temperature sensing effect in semiconductor nanofilms via optoelectronic coupling, termed optothermotronics. A gradient of charge carriers in the nanofilms under nonuniform light illumination is coupled with an electric tuning current to enhance the performance of the thermal sensing effect. As a proof of concept, we used silicon carbide (SiC) nanofilms that form nanoheterostructures on silicon (Si). The sensing performance based on the thermal excitation of charge carriers in SiC is enhanced by at least 100 times through photon excitation, with a giant temperature coefficient of resistance (TCR) of up to −50%/K. Our findings could be used to substantially enhance the thermal sensing performance of solid-state electronics beyond the present sensing technologies.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Date Deposited: 22 Jul 2020 00:31
Last Modified: 17 Jun 2021 00:02
Uncontrolled Keywords: Strain Sensor; Flexible Electronic; Sweat; Giant temperature-coefficient; Resistance; Sensors; Silicon; Strain
Fields of Research (2008): 02 Physical Sciences > 0205 Optical Physics > 020504 Photonics, Optoelectronics and Optical Communications
02 Physical Sciences > 0203 Classical Physics > 020399 Classical Physics not elsewhere classified
02 Physical Sciences > 0204 Condensed Matter Physics > 020499 Condensed Matter Physics not elsewhere classified
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5102 Atomic, molecular and optical physics > 510204 Photonics, optoelectronics and optical communications
51 PHYSICAL SCIENCES > 5103 Classical physics > 510399 Classical physics not elsewhere classified
51 PHYSICAL SCIENCES > 5104 Condensed matter physics > 510499 Condensed matter physics not elsewhere classified
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: https://doi.org/10.1126/sciadv.aay2671
URI: http://eprints.usq.edu.au/id/eprint/38852

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