Conference proceeding
Metal-dielectric frequency-selective surface for high performance solar window coatings
Proceedings of SPIE - The International Society for Optical Engineering, Vol.9756, pp.97561S-97561S-6
03/14/2016
DOI: 10.1117/12.2211179
Abstract
We demonstrate a solar control window film consisting of metallic nanoantennas designed to reflect infrared (IR) light while allowing visible light to pass through. The film consists of a capacitive frequency-selective surface (CFSS) which acts as a band-stop filter, reflecting only light at target wavelengths. The designed CFSS when installed on windows will lower air conditioning costs by reflecting undesired wavelengths of light and thus reduce the amount of heat that enters a building. State-of-the-art commercial solar control films consist of a multilayer stack which is costly (~$13/m2 to $40/m2) to manufacture and absorbs IR radiation, causing delamination or glass breakage when attached to windows. Our solar control film consists of a nanostructured metallic layer on a polyethylene terephthalate (PET) substrate that reflects IR radiation instead of absorbing it, solving the delamination problem. The CFSS is also easy to manufacture with roll-to-roll nanoimprint lithography at a cost of <$12/m2. We design the CFSS using the COMSOL Wave Optics module to solve for electromagnetic wave propagation in optical media via the finite element method. The simulation domain is reduced to a single unit cell with periodic boundary conditions to account for the symmetries of the planar, periodic CFSS. The design is optimized using parametric sweeps around the various geometric components of the metallic nanoantenna. Our design achieves peak reflection of 80% at 1000 nm and has a broadband IR response that will allow for optimum solar control without significantly affecting the transmission of visible light.
Details
- Title: Subtitle
- Metal-dielectric frequency-selective surface for high performance solar window coatings
- Creators
- Fatima Toor - University of IowaAnanda C Guneratne - University of IowaMarina Temchenko - Madico, Inc. (United States)
- Contributors
- Ali Adibi (Editor) - Georgia Institute of TechnologyShawn-Yu Lin (Editor) - Rensselaer Polytechnic InstituteAxel Scherer (Editor) - California Institute of Technology (United States)
- Resource Type
- Conference proceeding
- Publication Details
- Proceedings of SPIE - The International Society for Optical Engineering, Vol.9756, pp.97561S-97561S-6
- Publisher
- SPIE
- DOI
- 10.1117/12.2211179
- ISSN
- 0277-786X
- eISSN
- 1996-756X
- Language
- English
- Date published
- 03/14/2016
- Academic Unit
- Physics and Astronomy; Electrical and Computer Engineering; Iowa Technology Institute; Holden Comprehensive Cancer Center
- Record Identifier
- 9984197431202771
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