Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Infrared responsivity of a pyroelectric detector with a single-wall carbon nanotube coating

Not Accessible

Your library or personal account may give you access

Abstract

The performance of a 10mm diameter pyroelectric detector coated with a single-wall carbon nanotube (SWCNT) was evaluated in the 0.8 to 20μm wavelength range. The relative spectral responsivity of this detector exhibits significant fluctuations over the wavelength range examined. This is consistent with independent absorbance measurements, which show that SWCNTs exhibit selective absorption bands in the visible and near-infrared. The performance of the detector in terms of noise equivalent power and detectivity in wavelength regions of high coating absorptivity was comparable with gold-black-coated pyroelectric detectors based on 50μm thick LiTaO3 crystals. The response of this detector was shown to be nonlinear for DC equivalent photocurrents >109A, and its spatial uniformity of response was comparable with other pyroelectric detectors utilizing gold-black coatings. The nonuniform spectral responsivity exhibited by the SWCNT-coated detector is expected to severely restrict the use of SWCNTs as black coatings for thermal detectors. However, the deposition of SWCNT coatings on a pyroelectric crystal followed by the study of the prominence of the spectral features in the relative spectral responsivity of the resultant pyroelectric detectors is shown to provide an effective method for quantifying the impurity content in SWCNT samples.

© 2008 Optical Society of America

Full Article  |  PDF Article
More Like This
Evaluation of a pyroelectric detector with a carbon multiwalled nanotube black coating in the infrared

E. Theocharous, R. Deshpande, A. C. Dillon, and J. Lehman
Appl. Opt. 45(6) 1093-1097 (2006)

Single-wall carbon nanotube coating on a pyroelectric detector

John H. Lehman, Chaiwat Engtrakul, Thomas Gennett, and Anne C. Dillon
Appl. Opt. 44(4) 483-488 (2005)

Assembly and evaluation of a pyroelectric detector bonded to vertically aligned multiwalled carbon nanotubes over thin silicon

E. Theocharous, S. P. Theocharous, and J. H. Lehman
Appl. Opt. 52(33) 8054-8059 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved