Journal
OPTICS EXPRESS
Volume 24, Issue 2, Pages A92-A103Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.000A92
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Funding
- Shanghai Science and Technology Foundations [13JC1405902, 15dz2282100]
- National Natural Science Foundation of China (NSFC) [61223006]
- Youth Innovation Promotion Association CAS [2012189]
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Solar selective absorbers are the core part for solar thermal technologies such as solar water heaters, concentrated solar power, solar thermoelectric generators and solar thermophotovoltaics. Colorful solar selective absorber can provide new freedom and flexibility beyond energy performance, which will lead to wider utilization of solar technologies. In this work, we present a monolithic integration of colored solar absorber array with different colors on a single substrate based on a multilayered structure of Cu/TiNxOy/TiO2/Si3N4/SiO2. A colored solar absorber array with 16 color units is demonstrated experimentally by using combinatorial deposition technique via changing the thickness of SiO2 layer. The solar absorptivity and thermal emissivity of all the color units is higher than 92% and lower than 5.5%, respectively. The colored solar selective absorber array can have colorful appearance and designable patterns while keeping high energy performance at the same time. It is a new candidate for a number of solar applications, especially for architecture integration and military camouflage. (C) 2015 Optical Society of America
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