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Issue 5, 2018
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Effects of particle size and annealing on plasmon-induced charge separation at self-assembled gold nanoparticle arrays

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Abstract

Two-dimensional periodic Au nanoparticle arrays were constructed on TiO2 thin films by a micelle lithography method and seed-mediated photoelectrochemical growth. Their adjustable interparticle distance allows investigation of a particle size effect on plasmon-induced charge separation (PICS) efficiencies without interference from particle aggregation or plasmon coupling. External or internal PICS efficiencies were found to increase and decrease, respectively, with an increase in particle diameter from 25 to 38 nm. Improvement of the contact between Au nanoparticles and TiO2 by annealing enhanced the intensity of a plasmonic interface mode and both external and internal PICS efficiencies.

Graphical abstract: Effects of particle size and annealing on plasmon-induced charge separation at self-assembled gold nanoparticle arrays

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Publication details

The article was received on 18 Nov 2017, accepted on 26 Dec 2017 and first published on 02 Jan 2018


Article type: Paper
DOI: 10.1039/C7CP07786F
Citation: Phys. Chem. Chem. Phys., 2018,20, 3735-3740
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    Effects of particle size and annealing on plasmon-induced charge separation at self-assembled gold nanoparticle arrays

    K. Kao, H. Nishi and T. Tatsuma, Phys. Chem. Chem. Phys., 2018, 20, 3735
    DOI: 10.1039/C7CP07786F

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