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Published on: November 5, 2014
Multiwall carbon nanotube absorber on a thin-film lithium niobate pyroelectric detector
John H Lehman1, Katherine E Hurst, Antonije M Radojevic
1Sources, Detectors and Displays Group, National Institute of Standards and Technology, Boulder, Colorado 80305, USA. lehman@boulde.nist.gov
Abstract:
Multiwall carbon nanotubes (MWNTs) were applied in a bulk layer to a pyroelectric film to increase the detector sensitivity nearly fourfold without a substantial penalty to the low-frequency response (4-100 Hz). In addition, the spectral sensitivity over the wavelength range from 600 to 1800 nm was uniformly enhanced, with variations less than 1%. The results demonstrate the suitability of MWNTs as an efficient thermal absorber having low thermal mass.
