Carbon Nanotube‐Based Tandem Absorber with Tunable Spectral Selectivity: Transition from Near‐Perfect Blackbody Absorber to Solar Selective Absorber | Zendy

Selvakumar N. | Zendy; Krupanidhi S. B. | Zendy; Barshilia Harish C. | Zendy

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Carbon Nanotube‐Based Tandem Absorber with Tunable Spectral Selectivity: Transition from Near‐Perfect Blackbody Absorber to Solar Selective Absorber

Author(s) -

Selvakumar N.,

Krupanidhi S. B.,

Barshilia Harish C.

Publication year - 2014

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201305070

Subject(s) - materials science , black body radiation , carbon nanotube , tandem , coating , selective surface , thermal , optoelectronics , thermal stability , optics , nanotechnology , composite material , chemical engineering , physics , engineering , radiation , meteorology

CVD grown CNT thin film with a thickness greater than 10 μm behaves like a near‐perfect blackbody absorber (i.e., α/ε = 0.99/0.99). Whereas, for a thickness ≤ 0.4 µm, the CNT based tandem absorber acts as a spectrally selective coating (i.e., α/ε = 0.95/0.20). These selective coatings exhibit thermal stability up to 650 °C in vacuum, which can be used for solar thermal power generation.

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