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Journal of Nanophotonics

Design of polymer multilayer heterostructure broadband reflector for the near-infrared using genetic algorithm
Author(s): Xiang Cheng; Weimin Yang; Chengyou Lin; Yumei Ding; Zhiwei Jiao
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Paper Abstract

A broadband reflector for the near-infrared (NIR) was designed using a multilayer heterostructure consisting of several quarter-wave stacks (QWSs), which were composed of polymethyl methacrylate (PMMA) and polyethylene terephthalate (PET) films. Taking the solar power density as the target and using the Bragg wavelength of each QWS as the variable, the genetic algorithm was applied to look for the optimal multilayer heterostructure for broadband NIR reflection. As high as 99.46% total energy reflectivity in the short-wavelength NIR region (780 to 1100 nm) and 89.56% total energy transmissivity in the visible light region (380 to 780 nm) were realized by a multilayer heterostructure consisting of six quarter-wave PMMA/PET stacks, which can be easily fabricated based on the micronano multilayer coextrusion technology. The designed structure possesses good stability, and its total energy reflectivity is not sensitive to the incident angle of light. The proposed broadband NIR reflector can be applied to buildings as energy-saving films.

Paper Details

Date Published: 21 September 2017
PDF: 9 pages
J. Nanophoton. 11(3) 036021 doi: 10.1117/1.JNP.11.036021
Published in: Journal of Nanophotonics Volume 11, Issue 3
Show Author Affiliations
Xiang Cheng, Beijing Univ. of Chemical Technology (China)
Weimin Yang, Beijing Univ. of Chemical Technology (China)
Beijing Advanced Innovation Ctr. for Soft Matter Sciences (China)
Chengyou Lin, Beijing Univ. of Chemical Technology (China)
Yumei Ding, Beijing Univ. of Chemical Technology (China)
Zhiwei Jiao, Beijing Univ. of Chemical Technology (China)


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