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Simulation of the thickness dependence of the optical properties of suspended particle devices
Escuela Superior Ploytechnica de Chimborazo, Ecuador.
Universidad Carlos III de Madrid.
Universidad Carlos III de Madrid.
Universidad Carlos III de Madrid.
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2015 (English)In: Solar Energy Materials and Solar Cells, ISSN 0927-0248, E-ISSN 1879-3398, Vol. 143, 613-622 p.Article in journal (Refereed) Published
Abstract [en]

Suspended particle devices (SPDs) constitute an electrically powered chromogenic technology, in which the active layer quickly are able to rapidly switches from a dark bluish-black dark color state to a clear greyish color appearance when an AC electric field is applied. Two-flux and four-flux models were used to derive refractive indices and extinction coefficients, as well as scattering and absorption coefficients, of the particle-containing active layer. These entities were used in model calculations to predict the direct, total and diffuse components of the transmittance andthe reflectance, together along with the color appearance and haze, as a function of the thickness of the active layer. An optimum thickness for the optical contrast of the SPD was determined in this way and was found to be in the range of 200 to 300 nm. The SPDdevices device exhibits a significant reflectance  haze particularly in reflection.

Place, publisher, year, edition, pages
2015. Vol. 143, 613-622 p.
Keyword [en]
Suspended particle devices; Electra-optical materials; Electra-optical devices; Optical properties; Scattering particles; Thin films; Solar energy; Smart windows
National Category
Condensed Matter Physics Engineering and Technology
URN: urn:nbn:se:uu:diva-266824DOI: 10.1016/j.solmat.2015.05.044iISI: 000364250200083OAI: oai:DiVA.org:uu-266824DiVA: diva2:868747
Available from: 2015-11-11 Created: 2015-11-11 Last updated: 2015-12-15Bibliographically approved

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Granqvist, Claes-GöranNiklasson, Gunnar A.
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