title: The optical properties of ZnO hexagonal prisms grown from poly (vinylpyrrolidone)-assisted electrochemical assembly onto Si (111) substrate.
abstract: ZnO hexagonal prisms have been grown from poly (vinylpyrrolidone)-assisted electrochemical assembly onto p-type Si (111) substrate. These ZnO prisms arrays are highly (0002) orientated. The (0001) end facets and {1010} side facets of the hexagonal prisms are well defined. The photoluminescence (PL) spectrum of these ZnO prisms shows an intense ultraviolet near band-gap emission with a full width at half maximum of 86 meV at room temperature. The low-temperature PL spectrum is split into well-resolved free and bound exciton emission lines. The temperature dependence of the exciton emission intensities shows a nonmonotonic decaying behavior, which can be explained by the existence of interfacial states.
authors.affiliation: Center for Advanced Optoelectronic Functional Materials Research, Northeast Normal University, Changchun, People's Republic of China.
authors.forename: Y L
authors.initials: YL
authors.lastname: Liu
authors.forename: Y C
authors.initials: YC
authors.lastname: Liu
authors.forename: W
authors.initials: W
authors.lastname: Feng
authors.forename: J Y
authors.initials: JY
authors.lastname: Zhang
authors.forename: Y M
authors.initials: YM
authors.lastname: Lu
authors.forename: D Z
authors.initials: DZ
authors.lastname: Shen
authors.forename: X W
authors.initials: XW
authors.lastname: Fan
authors.forename: D J
authors.initials: DJ
authors.lastname: Wang
authors.forename: Q D
authors.initials: QD
authors.lastname: Zhao