Journal
NANOTECHNOLOGY
Volume 28, Issue 50, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa96c2
Keywords
AgNW; emissivity; infrared; thin films
Funding
- NSF IUCRC program [1338917]
- NASA Langley Professor program
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1338917] Funding Source: National Science Foundation
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The properties of silver nanowire (AgNW) films in the optical and infrared spectral regime offer an interesting opportunity for a broad range of applications that require low-emissivity coatings. This work reports a method to reduce the thermal emissivity of substrates by the formation of low-emissivity AgNW coating films from solution. The spectral emissivity was characterized by thermal imaging with an FLIR camera, followed by Fourier transform infrared spectroscopy. In a combined experimental and simulation study, we provide fundamental data of the transmittance, reflectance, haze, and emissivity of AgNW thin films. Emissivity values were finely tuned by modifying the concentration of the metal nanowires in the films. The simulation models based on the transfer matrix method developed for the AgNW thin films provided optical values that show a good agreement with the measurements.
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