期刊
APL MATERIALS
卷 3, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4922935
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资金
- Japan Society for the Promotion of Science [25107511, 15H00863, 25288063, 26810043]
- Grants-in-Aid for Scientific Research [26810043, 25288063, 15H00863, 25107511] Funding Source: KAKEN
Photoelectrodes based on plasmonic Au semishell (or halfshell) arrays are developed. A colloidal crystal consisting of SiO2@TiO2 core-shell particles is prepared on a TiO2-coated transparent electrode. A Au semishell (or halfshell) array is deposited by sputtering or evaporation on the colloidal crystal. An electrode with the semishell (or halfshell) array exhibits negative photopotential shifts and anodic photocurrents under visible light at 500-800 nm wavelengths in an aqueous electrolyte containing an electron donor. In particular, hydroquinone and ethanol are good electron donors. The photocurrents can be explained in terms of plasmon-induced charge separation at the Au-TiO2 interface. (C) 2015 Author(s).
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