Research Journal of Optics and Photonics

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Broadband Plasmonic Total Light Absorption in an Aldoped ZnO/spacer/silver Stack Patterned with Graded Photonic Super-crystal

For the first time, Al-doped ZnO patterned with graded photonic super-crystals with dual lattice and dual period and stacked on SiO2/ silver films, has been studied for plasmonic total light absorption. Broadband total light absorption occurs due to the gradient size distribution of dot disks in the photonic lattice. Localized surface plasmon polaritons (SPPs) are selectively confined in certain dot disks following the SPP formation condition, and total light absorption happens when the SPPs are coupled to the Fabry–Pérot resonance which is dependent on the spacer thickness.

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