Growth, characterization and performance evaluation of Ti/AlTiN/AlTiON/AlTiO high temperature spectrally selective coatings for solar thermal power applications

Barshilia, Harish C (2014) Growth, characterization and performance evaluation of Ti/AlTiN/AlTiON/AlTiO high temperature spectrally selective coatings for solar thermal power applications. Solar Energy Materials and Solar Cells, 130 . 322-330. ISSN 0927-0248

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    Abstract

    We describe the growth, characterization and performance evaluation of a multilayer solar selective coating useful for solar thermal power generation. The solar selective coating of the present work consists of Ti/chrome interlayer, two absorber layers of AlTiN and AlTiON, and an anti-reflection layer of AlTiO. All the layers have been deposited using reactive pulsed direct current sputtering of Ti and Al targets in Ar+N2, Ar+N2+O2 and Ar+O2 plasmas, respectively. A large number of analytical tools have been used to characterize the structural and optical properties of the absorber coating. The optimized coating exhibited an absorptance of 0.930 and an emittance of 0.16–0.17 on stainless steel substrates and an absorptance of 0.933 and an emittance of 0.07 on copper substrates. The absorber coating displayed improved adhesion, UV stability, corrosion resistance and thermal stability in air and vacuum up to 350 and 450 °C, respectively under cyclic heating condition for more than 1000 hrs.

    Item Type: Journal Article
    Additional Information: Copyright for this article belongs to M/s. Elsevier B.V
    Uncontrolled Keywords: High temperature solar selective coatings;Tandem absorber; Sputtering;Optical properties;Performance evaluation; Accelerated aging tests
    Subjects: AERONAUTICS > Aeronautics (General)
    RENEWABLE ENERGY > Solar Energy
    Division/Department: Surface Engineering Division
    Depositing User: Ms. Alphones Mary
    Date Deposited: 17 Aug 2015 10:33
    Last Modified: 17 Aug 2015 10:33
    URI: http://nal-ir.nal.res.in/id/eprint/12284

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