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High performance broadband absorber in the visible band by engineered dispersion and geometry of a metal-dielectric-metal stack
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10.1063/1.4771994
/content/aip/journal/apl/101/24/10.1063/1.4771994
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/24/10.1063/1.4771994
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic of structure-I with top Cu gratings and (b) structure-II with both bottom and top Cu gratings and (c)simulated absorption spectrums of the designed structures.

Image of FIG. 2.
FIG. 2.

(a) Calculated dispersion curves of the metal/Si3N4/metal waveguide with a dielectric core thickness d = 150 nm. (b) Distributions of magnetic field H (color coded) and Poynting vector field in the absorber of structure-I at 400 nm, 450 nm, 500 nm, and 550 nm.

Image of FIG. 3.
FIG. 3.

Resistive heating (red color map) and divergence of power flow (white arrows) in structure-II at wavelength of 450 nm, 550 nm, 620 nm, and 680 nm.

Image of FIG. 4.
FIG. 4.

(a) SEM cross-section image of the fabricated structure-I. (b) SEM cross-section image of structure-II with both bottom and top gratings. (c) Absorption spectrum of the experimental and (d) simulation results of the structure-I and structure-II.

Image of FIG. 5.
FIG. 5.

(a) Simulated reflection spectrum of the absorber with Au/P3HT:PCBM/Au; (b) Normal intensity of electrical field in the absorber at the wavelength of640 nm. (c) Enhancement factor of absorption in the grating assisted structure compared with the conventional structure with ITO glass.

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/content/aip/journal/apl/101/24/10.1063/1.4771994
2012-12-12
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High performance broadband absorber in the visible band by engineered dispersion and geometry of a metal-dielectric-metal stack
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/24/10.1063/1.4771994
10.1063/1.4771994
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