Electrical characterization of single-walled carbon nanotube (SWCNT) microbolometers

  • Maranatha del Moro Andalis Department of Physical Sciences, University of the Philippines Baguio
  • Yuki Kuhawara Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology
  • Gail Tolentino Department of Physical Sciences, University of the Philippines Baguio
  • Ralph Adrian Paragas Department of Physical Sciences, University of the Philippines Baguio
  • May Angelu Madarang Department of Physical Sciences, University of the Philippines Baguio
  • Mark Ilasin Department of Physical Sciences, University of the Philippines Baguio
  • Takeshi Saito Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology
  • Ian Jasper Agulo Department of Physical Sciences, University of the Philippines Baguio https://orcid.org/0000-0003-0745-9300

Abstract

A single-walled carbon nanotube (SWCNT)-based microbolometer was fabricated. The bolometer temperature coefficient of resistance (TCR) was obtained by measuring current-voltage (IV) characteristics from 20°C to 100°C using a four-point probe measurement set-up. The responsivity and the time constant were measured by applying an AC voltage from 1 Hz to 10 MHz and determining the output voltage over the given frequencies. The measured TCR was -1.1 %/K. A very high responsivity and extremely fast time constant were 49.9 kV/W and 400 ns, respectively. We attribute the very good performance of our microbolometer to the semiconducting nature of SWCNT, the low thermal conductance of the oxide layer, and the geometry of the electrodes.

Published
2018-05-25
How to Cite
[1]
M. Andalis, Y. Kuhawara, G. Tolentino, R. A. Paragas, M. A. Madarang, M. Ilasin, T. Saito, and I. J. Agulo. Electrical characterization of single-walled carbon nanotube (SWCNT) microbolometers, Proceedings of the Samahang Pisika ng Pilipinas 36, SPP-2018-1G-06 (2018). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2018-1G-06.
Section
Condensed Matter and Materials Science