title: Properties of Plasmon-Induced Photoelectric Conversion on a TiO2/NiO p-n Junction with Au Nanoparticles.
abstract: We have successfully fabricated all-solid-state plasmonic photoelectric conversion devices composed of titanium dioxide (TiO2)/nickel oxide (NiO) p-n junctions with gold nanoparticles (Au-NPs) as prototype devices for a plasmonic solar cell. The characteristics of the crystal structures and the photoelectric properties of the all-solid-state devices were demonstrated. We observed that the crystalline structure of the NiO thin film and the interfacial structure of TiO2/Au-NPs/NiO changed significantly during an annealing treatment. Furthermore, the photoelectric conversion devices exhibited plasmon-induced photocurrent generation in the visible-wavelength region. The photocurrent may result from plasmon-induced charge separation. The photoelectric conversion properties via plasmon-induced charge separation were strongly correlated with the morphology of the TiO2/Au-NPs/NiO interface. The long-term stability of the plasmonic photoelectric conversion device was found to be very high because a stable photocurrent was observed even after irradiation for 3 days.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Nakamura
authors.forename: Tomoya
authors.initials: T
authors.lastname: Oshikiri
authors.forename: Kosei
authors.initials: K
authors.lastname: Ueno
authors.forename: Yongming
authors.initials: Y
authors.lastname: Wang
authors.forename: Yoshiomi
authors.initials: Y
authors.lastname: Kamata
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kotake
authors.affiliation: Department of Applied Chemistry & Institute of Molecular Science, National Chiao Tung University , 1001 Ta Hsueh R., Hsinchu 30010, Taiwan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Misawa