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Uncooled bolometer-type infrared detector's performance is strongly limited by temperature coefficient of resistance (TCR) of the resistor. Single-walled carbon nanotubes (SWCNTs) are expected as promising materials with high TCR, and high chemical stability. In a preliminary experiment TCR of semiconducting CNT networks extracted by using non-ionic surfactants was confirmed to be -6%/K. Electric properties of SWCNT networks were strongly affected by its morphology. Optimization of SWCNT network morphology is important to maximize the detectability of SWCNT bolometers.
T. Tanaka,T. Shibuya,N. Tonouchi,T. Miyamoto,M. Kanaori,N. Fukuda, andR. Yuge
"Evaluation and modeling of electrical conductivity of semi-conducting carbon nanotube networks for bolometric infrared detectors", Proc. SPIE 12534, Infrared Technology and Applications XLIX, 125341U (13 June 2023); https://doi.org/10.1117/12.2663010
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T. Tanaka, T. Shibuya, N. Tonouchi, T. Miyamoto, M. Kanaori, N. Fukuda, R. Yuge, "Evaluation and modeling of electrical conductivity of semi-conducting carbon nanotube networks for bolometric infrared detectors," Proc. SPIE 12534, Infrared Technology and Applications XLIX, 125341U (13 June 2023); https://doi.org/10.1117/12.2663010