19 October 2016 Energy absorption of refractory absorber with periodic nanostructures
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Proceedings Volume 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation; 101540X (2016) https://doi.org/10.1117/12.2246601
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
Refractory material with surface plasmonic structures have the function of spectrum selective absorption and radiation spectrum regulation. In this paper, we design an absorber with periodic cylindrical nanostructures and a dielectric layer of Al2O3 based on the substrate of metal Tantalum (Ta). The energy absorption characteristics of the absorber have been simulated and analyzed by changing various constructional parameters. The simulation results indicate that structural parameters have great influence on the spectrum absorption in the range of wavelength 400-4000nm. The period and radius of nanostructure have a important effect on the absorption peaks in the infrared region. Infrared absorption peak can reach more than 99% and produce a red shift due to parameters changing. At the whole visible field, the absorption enhancement effect is significant. The refractive index and thickness of dielectric layer also have an obviously effect on the absorption spectrum. Furthermore, it is also obviously that thickness of dielectric layer has enhancement effect on absorption of infrared spectrum. The research found that the absorption and radiation spectrum of surface plasmonic materials can be effectively controlled by combining the high temperature radiation characteristics of high temperature metal. Thermophotovoltaic system can provide a kind of new methods and ideas for improving conversion efficiency, energy saving and consumption reducing.
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Yuchen Kang, Shuhan Yang, Yanhong Wang, Jingzhi Wu, "Energy absorption of refractory absorber with periodic nanostructures", Proc. SPIE 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation, 101540X (19 October 2016); doi: 10.1117/12.2246601; https://doi.org/10.1117/12.2246601
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