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Carbon nanotube - Polymer nanocomposite infrared sensor

Authors:
Pradhan, B.
Setyowati, K.
Liu, H. Y.
Waldeck, D. H.
Chen, J.
Published by: Nano Letters
Date: 4 2008
Volume, Number, Pages: 8 4 1142-1146

Accession Number: ISI:000254911200029

Abstract:

The infrared photoresponse in the electrical conductivity of single-walled carbon nanotubes (SWNTs) is dramatically enhanced by embedding SWNTs in an electrically and thermally insulating polymer matrix. The conductivity change in a 5 wt % SWNT-polycarbonate nanocomposite is significant (4.26%) and sharp upon infrared illumination in the air at room temperature. While the thermal effect predominates in the infrared photoresponse of a pure SWNT film, the photoeffect predominates in the infrared photoresponse of SWNT-polycarbonate nanocomposites.