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Metal-carbon nanotube composite for wavelength-selective bolometer with improved characteristics

Nandi, S and Panwar, V and Misra, A (2023) Metal-carbon nanotube composite for wavelength-selective bolometer with improved characteristics. In: Journal of Applied Physics, 133 (4).

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Official URL: https://doi.org/10.1063/5.0129993


This work comprehensively discusses the utilization of a metal-multiwalled carbon nanotube (CNT) nanocomposite of gold (Au)/CNT for uncooled bolometric application synthesized by a simple rapid green synthesis technique. Enhanced light-matter interaction with the visible (532 nm) and near-infrared (1064 nm) radiations in the nanocomposite is utilized for achieving improved bolometric response at room temperature (RT, ∼300 K). A comparatively higher temperature coefficient of resistance of ∼-0.11%/K (improvement of ∼57%) was achieved in the Au/CNT nanocomposite bolometer (BM). Additionally, the composite BM demonstrated a dual (532 and 1064 nm) spectral selectively and enhanced sensitivity with respective large RT voltage responsivities of ∼11.70 ± 3.45 V/W and ∼503.54 ± 12.77 mV/W, as opposed to null response from the CNT BM. The current study, thus, demonstrates an important step toward designing high-performing CNT BMs for uncooled operation, with added functionality of wavelength-selectiveness.

Item Type: Journal Article
Publication: Journal of Applied Physics
Publisher: American Institute of Physics Inc.
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Infrared detectors; Multiwalled carbon nanotubes (MWCN); Nanocomposites; Temperature, 1064 nm; Carbon nanotube nanocomposites; Carbon nanotubes composites; Green synthesis; Multi-walled-carbon-nanotubes; Simple++; Synthesis techniques; Synthesised; Uncooled; Wavelength-selective, Bolometers
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 16 Feb 2023 04:31
Last Modified: 16 Feb 2023 04:31
URI: https://eprints.iisc.ac.in/id/eprint/80293

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