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Large-scale nanostructured low-temperature solar selective absorber
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2017 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 42, no 10, 1891-1894 p.Article in journal (Refereed) Published
Abstract [en]

A large-scale nanostructured low-temperature solar selective absorber is demonstrated experimentally. It consists of a silicon dioxide thin film coating on a rough refractory tantalum substrate, fabricated based simply on self-assembled, closely packed polystyrene nanospheres. Because of the strong light harvesting of the surface nanopatterns and constructive interference within the top silicon dioxide coating, our absorber has a much higher solar absorption (0.84) than its planar counterpart (0.78). Though its absorption is lower than that of commercial black paint with ultra-broad absorption, the greatly suppressed absorption/emission in the long range still enables a superior heat accumulation. The working temperature is as high as 196.3 degrees C under 7-sun solar illumination in ambient conditions-much higher than those achieved by the two comparables.

Place, publisher, year, edition, pages
Optical Society of America, 2017. Vol. 42, no 10, 1891-1894 p.
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URN: urn:nbn:se:kth:diva-208812DOI: 10.1364/OL.42.001891ISI: 000401424900006PubMedID: 28504752Scopus ID: 2-s2.0-85019185943OAI: oai:DiVA.org:kth-208812DiVA: diva2:1108954
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QC 20170613

Available from: 2017-06-13 Created: 2017-06-13 Last updated: 2017-06-13Bibliographically approved

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He, Sailing
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Zhejiang-KTH Joint Research Center of Photonics, JORCEP
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