title: High-sensitivity bolometers from self-oriented single-walled carbon nanotube composites.
abstract: In this work, films of horizontally aligned single-walled carbon nanotubes were thermally and electrically characterized in order to determine the bolometric performance. An average thermal time constant of τ = 420 μs along with a temperature coefficient of resistance of TCR = -2.94% K(-1) were obtained. The maximum voltage responsivity and detectivity obtained were R(V) =230 V/W and D* = 1.22 × 10(8) cm Hz(1/2)/W, respectively. These values are higher than the maximum voltage responsivity (150 V/W) and maximum temperature coefficient of resistance (1.0% K(-1)) previously reported for carbon nanotube films at room temperature. The maximum detectivity was obtained at a frequency of operation of 1.25 kHz.
authors: Coordinación para la Innovación y la Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78000, México.
authors: Gustavo
authors: G
authors: Vera-Reveles
authors: Trevor J
authors: TJ
authors: Simmons
authors: Mariela
authors: M
authors: Bravo-Sánchez
authors: M A
authors: MA
authors: Vidal
authors: Hugo
authors: H
authors: Navarro-Contreras
authors: Francisco J
authors: FJ
authors: González
mesh_terms: D004560:Electricity; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D011108:Polymers / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature
chemical_list: D037742:Nanotubes, Carbon; D011108:Polymers; D013501:Surface-Active Agents