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Characterization of Carbon nanotubes Near- Infrared Photoconductive Detector

Journal: Journal of Advances in Physics (Vol.9, No. 1)

Publication Date:

Authors : ; ; ; ;

Page : 2318-2321

Keywords : carbon nanotubes; indium tin oxide; IR detector; photoconductive detector;

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Abstract

Carbon nanotubes (MWCNTs,F-MWCNTs,SWCNTs) with different structure were fabricated into near-infrared photodetectors. Indium Tin Oxide (ITO) was used as a substrate to deposit CNTs by the drop casting method. The CNTs carrier concentrations, conductivity and carrier mobility were measured. Different types CNTs photodetectors exhibit a good photoconductive performance at a wavelength (980-1200nm) especially SWCNTs, responsivity was found to be (0.295 A W-1 ), specific detectivity (D*) 1×109 cm.Hz1/2 .W-1 and response time 0.049ns.

Last modified: 2015-10-16 16:15:16