Increasing photo-thermal efficiency of VO2-based devices using carbon nanotube thin-films

Tongyu Wang; David Torres; Chuan Wang; Nelson Sepulveda

doi:10.1109/ICSENS.2014.6985015

Increasing photo-thermal efficiency of VO₂-based devices using carbon nanotube thin-films

Tongyu Wang
, David Torres
, Chuan Wang
, Nelson Sepulveda

Department of Electrical & Systems Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This paper reports the first study on the use of single-wall carbon nanotubes (SWNTs) to reduce the amount of photo-thermal energy required to induce the phase transition in vanadium dioxide (VO₂) thin film sensors. A SWNT thin-film prepared using vacuum filtration process was transferred onto a VO₂ thin film. Owing to the superior light-absorption properties of SWNT thin-films, energy from a red light laser (650 nm) was efficiently harvested and converted to heat, which was then transferred from SWNT to VO₂ to induce the phase transition. We have confirmed that the quality of the VO₂ film was unaltered during the SWNT coating process, nor by the SWNT coating itself. These results show that the integration of SWNT films is an effective way to increase the efficiency of VO₂-based optical sensing devices and could potentially enable triggering of the phase transition in VO₂ films at ambient conditions, which would make low-power VO₂-based non-volatile multifunctional memories a reality. In addition, by using sorted SWNTs with predefined chirality, VO₂ sensors with tunable wavelength response could also be readily achieved.

Original language	English
Title of host publication	IEEE SENSORS 2014, Proceedings
Editors	Francisco J. Arregui
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	386-389
Number of pages	4
Edition	December
ISBN (Electronic)	9781479901616
DOIs	https://doi.org/10.1109/ICSENS.2014.6985015
State	Published - Dec 12 2014
Event	13th IEEE SENSORS Conference, SENSORS 2014 - Valencia, Spain Duration: Nov 2 2014 → Nov 5 2014

Publication series

Name	Proceedings of IEEE Sensors
Number	December
Volume	2014-December
ISSN (Print)	1930-0395
ISSN (Electronic)	2168-9229

Conference

Conference	13th IEEE SENSORS Conference, SENSORS 2014
Country/Territory	Spain
City	Valencia
Period	11/2/14 → 11/5/14

Keywords

CNT
VO

Access to Document

10.1109/ICSENS.2014.6985015

Cite this

Wang, T., Torres, D., Wang, C., & Sepulveda, N. (2014). Increasing photo-thermal efficiency of VO₂-based devices using carbon nanotube thin-films. In F. J. Arregui (Ed.), IEEE SENSORS 2014, Proceedings (December ed., pp. 386-389). Article 6985015 (Proceedings of IEEE Sensors; Vol. 2014-December, No. December). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICSENS.2014.6985015

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title = "Increasing photo-thermal efficiency of VO2-based devices using carbon nanotube thin-films",

abstract = "This paper reports the first study on the use of single-wall carbon nanotubes (SWNTs) to reduce the amount of photo-thermal energy required to induce the phase transition in vanadium dioxide (VO2) thin film sensors. A SWNT thin-film prepared using vacuum filtration process was transferred onto a VO2 thin film. Owing to the superior light-absorption properties of SWNT thin-films, energy from a red light laser (650 nm) was efficiently harvested and converted to heat, which was then transferred from SWNT to VO2 to induce the phase transition. We have confirmed that the quality of the VO2 film was unaltered during the SWNT coating process, nor by the SWNT coating itself. These results show that the integration of SWNT films is an effective way to increase the efficiency of VO2-based optical sensing devices and could potentially enable triggering of the phase transition in VO2 films at ambient conditions, which would make low-power VO2-based non-volatile multifunctional memories a reality. In addition, by using sorted SWNTs with predefined chirality, VO2 sensors with tunable wavelength response could also be readily achieved.",

keywords = "CNT, VO",

author = "Tongyu Wang and David Torres and Chuan Wang and Nelson Sepulveda",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 13th IEEE SENSORS Conference, SENSORS 2014 ; Conference date: 02-11-2014 Through 05-11-2014",

year = "2014",

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doi = "10.1109/ICSENS.2014.6985015",

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Wang, T, Torres, D, Wang, C & Sepulveda, N 2014, Increasing photo-thermal efficiency of VO₂-based devices using carbon nanotube thin-films. in FJ Arregui (ed.), IEEE SENSORS 2014, Proceedings. December edn, 6985015, Proceedings of IEEE Sensors, no. December, vol. 2014-December, Institute of Electrical and Electronics Engineers Inc., pp. 386-389, 13th IEEE SENSORS Conference, SENSORS 2014, Valencia, Spain, 11/2/14. https://doi.org/10.1109/ICSENS.2014.6985015

Increasing photo-thermal efficiency of VO₂-based devices using carbon nanotube thin-films. / Wang, Tongyu; Torres, David; Wang, Chuan et al.
IEEE SENSORS 2014, Proceedings. ed. / Francisco J. Arregui. December. ed. Institute of Electrical and Electronics Engineers Inc., 2014. p. 386-389 6985015 (Proceedings of IEEE Sensors; Vol. 2014-December, No. December).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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