High-sensitivity bolometers from self-oriented single-walled carbon nanotube composites.
ACS Appl Mater Interfaces
; 3(8): 3200-4, 2011 Aug.
Article
em En
| MEDLINE
| ID: mdl-21749106
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.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Nanotubos de Carbono
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
ACS Appl Mater Interfaces
Ano de publicação:
2011
Tipo de documento:
Article