4 years ago

Solar Transparent Radiators by Optical Nanoantennas

Solar Transparent Radiators by Optical Nanoantennas
Manoj Jaysankar, Magnus P. Jonsson, Lianming Tong, Daniel Tordera, Tavakol Pakizeh, Gustav Jönsson, Vladimir Miljkovic, Alexandre Dmitriev
Architectural windows are a major cause of thermal discomfort as the inner glazing during cold days can be several degrees colder than the indoor air. Mitigating this, the indoor temperature has to be increased, leading to unavoidable thermal losses. Here we present solar thermal surfaces based on complex nanoplasmonic antennas that can raise the temperature of window glazing by up to 8 K upon solar irradiation while transmitting light with a color rendering index of 98.76. The nanoantennas are directional, can be tuned to absorb in different spectral ranges, and possess a structural integrity that is not substrate-dependent, and thus they open up for application on a broad range of surfaces.

Publisher URL: http://dx.doi.org/10.1021/acs.nanolett.7b02962

DOI: 10.1021/acs.nanolett.7b02962

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