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Activation of plasmons and polarons in solar control cesium tungsten bronze and reduced tungsten oxide nanoparticles

Published online by Cambridge University Press:  10 February 2012

Kenji Adachi  and
Tsuyoshi Asahi
Kenji Adachi*
Affiliation:
Ichikawa Research Laboratories, Sumitomo Metal Mining Co. Ltd., Ichikawa, Chiba 272-8588, Japan
Tsuyoshi Asahi
Affiliation:
Department of Applied Chemistry, Ehime University, Matsuyama Ehime 790-8577, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Dispersions of reduced tungsten oxide and tungsten bronze nanoparticles are known to show a remarkable absorption of near-infrared (NIR) light applicable to solar control filters for automotive and architectural windows. Origin of the NIR absorption has been investigated by analyzing dielectric constants of CsxWO3 (x = 0.15, 0.25, and 0.33) and WO2.72, and using Mie scattering theory. The optical analysis and Mie scattering theory analysis indicate that a localized surface plasmon resonance and polarons of localized electrons contribute alongside to the observed NIR absorption at different wavelengths.

Keywords

NanoscaleOptical properties
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 6 , 28 March 2012 , pp. 965 - 970
Copyright
Copyright © Materials Research Society 2012

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