Abstract
Mg-Ti-H thin films are found to have very attractive optical properties: they absorb 87% of the solar radiation in the hydrogenated state and only 32% in the metallic state. Furthermore, in the absorbing state Mg-Ti-H has a low emissivity; at 400 K only 10% of blackbody radiation is emitted. The transition between both optical states is fast, robust, and reversible. The sum of these properties highlights the applicability of such materials as switchable smart coatings in solar collectors.
Original language | English |
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Article number | 241910 |
Journal | Applied Physics Letters |
Volume | 88 |
Issue number | 24 |
DOIs | |
Publication status | Published - 12 Jun 2006 |
Bibliographical note
Funding Information:This work is part of the research program of the Stichting voor Fundamenteel Onderzoek der Materie (FOM) and the Technologiestichting STW. Both are financially supported by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO). Financial support from the EU sixth framework program Novel Efficient Solid Storage for Hydrogen NESSHY is also acknowledged.