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Hee Jun Kim1 Jeong Min Baik1

1, Ulsan National Institute of Science and Technology, Ulsan, , Korea (the Republic of)

Recently, our group demonstrated optical excitation at their localized surface plasmon resonance (LSPR) frequency and induced local enhancement of electromagnetic (EM) fields near the nanoparticles and bottom Au layer surface that can be markedly boosted using metal-dielectric hybrid-structure geometry. In the current study, we show that by engineering a photoanode which includes an array of pyramidal gold layer with a thin, thickness-varianced TiO2 layer by oblique angle deposition technique on the surface in contact with gold nanoparticles, which works as a TiO2 plasmonic platform for wide light absorption and their water splitting Applications.

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