High-Sensitivity Bolometers from Self-Oriented Single-Walled Carbon Nanotube Composites

被引：44

作者：

Vera-Reveles, Gustavo ^{[1
]}

Simmons, Trevor J. ^{[1
,2
]}

Bravo-Sanchez, Mariela ^{[1
]}

Vidal, M. A. ^{[1
]}

Navarro-Contreras, Hugo ^{[1
]}

Gonzalez, Francisco J. ^{[1
]}

机构：

[1] Univ Autonoma San Luis Potosi, San Luis Potosi 78000, Mexico

[2] Rensselaer Polytech Inst, Dept Chem & Chem Biol, Troy, NY 12180 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 08期

关键词：

bolometers; carbon nanotubes; infrared detectors; noise; detectivity; PYROELECTRIC DETECTORS; AMORPHOUS-SILICON; FILMS; ARRAYS; NOISE;

D O I：

10.1021/am2007036

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 tau = 420 mu s 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 x 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.

引用

页码：3200 / 3204

页数：5

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