Journal
VACUUM
Volume 146, Issue -, Pages 194-199Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2017.09.051
Keywords
Metal-dielectric film structure; Solar absorption; Thermal emittance; Solar-thermal conversion
Funding
- National Natural Science Foundation of China [61427815, 61605089]
- China Postdoctoral Science Foundation [2017M611875]
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A typical 6-layered metal-dielectric film structure of SiO2 (57.3 nm)/Cr (2.9 nm)/SiO2(72.9 nm)/Cr (6.6 nm)/SiO2 (57.6 nm)/Cu (>100.0 nm) was designed and fabricated by magnetron sputtering. It showed a high solar absorption of about 95.8% in the wavelength range of 250-2000 nm, a low thermal emittance of about 0.104 at 600 K and good thermal stability at 673 K after annealing for 12 h in vacuum condition. The angle-dependent reflectance spectra indicated that the proposed 6-layered film structure has a great angular tolerance even when the incident angle increases to 50 degrees. All of the excellent spectral properties and good thermal stability demonstrate the 6-layered planar film structure will be suitable for practical applications of solar-thermal conversion. (C) 2017 Elsevier Ltd. All rights reserved.
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