title: Plasmon-resonance-based generation of cathodic photocurrent at electrodeposited gold nanoparticles coated with TiO2 films.
abstract: Reversed photoresponse: Indium tin oxide (ITO)/Au nanoparticle (NP)/TiO(2) electrodes (see picture) exhibit cathodic photocurrents and positive photopotentials under visible light, whereas ITO/TiO(2)/Au NP electrodes show an inverted response. This behavior indicates that electron transfer occurs from the plasmon-excited Au NPs to the TiO(2) film. An enhanced O(2) photoreduction activity is found for ITO/Au NP/TiO(2)/Pt electrodes.
authors.affiliation: Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505 (Japan), Fax: (+81) 3-5452-6338.
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Sakai
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Fujiwara
authors.forename: Yukina
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Tetsu
authors.initials: T
authors.lastname: Tatsuma