Hybrid plasmonic nanoresonators as efficient solar heat shields. (July 2017)

• Record Type: Journal Article
• Authors: Sousa-Castillo, Ana; Ameneiro-Prieto, Óscar; Comesaña-Hermo, Miguel; Yu, Renwen; Vila-Fungueiriño, José M.; Pérez-Lorenzo, Moisés; Rivadulla, Francisco; García de Abajo, F. Javier; Correa-Duarte, Miguel A.
• Is Part Of: Nano energy. Volume 37(2017:Jul.)
• Page Start: 118
• Page End: 125
• Publication Date: 2017-07
• Subjects: Solar shielding -- Nanocapsules -- Gold nanoparticles -- Plasmonics -- NIR; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2017.05.014
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: A solar heat shield coating featuring the combination of plasmonic nanostructures in silica-based insulating materials has been developed and tested under conditions resembling natural sunlight exposure. Our results when implementing this coating on standard glazing reveal a blocking efficiency higher than 40%, compatible with a notable preservation of visible light transmittance above 75%. This strategy is (i) cost-effective, as only requires minute amounts of absorbent material in order to obtain the desired effect; (ii) straightforward, because no particular ordering of the plasmon resonators is needed onto the glass substrate; (iii) eco-friendly, as no metal leaching is observed once the gold is encapsulated; and (iv) retrofit-capable, given the fact that these nanostructures can be easily incorporated onto pre-installed glazing. All of these features emphasize the great potential of this approach in the search of more sustainable technologies for the fenestration industry. Graphical abstract: Highlights: A solar shield combines plasmonic nanoparticles and silica insulating materials. This technology is tested under conditions resembling natural sunlight exposure. Implementing these coatings on glazing provides a thermal blocking higher than 40%. This approach allows for a notable preservation of visible light transmittance.