title: Double-layer electrode based on TiO2 nanotubes arrays for enhancing photovoltaic properties in dye-sensitized solar cells.
abstract: The present work reports a rapid and facile method to fabricate a novel double-layer TiO2 photoanode, which is based on highly ordered TiO2 nanotube arrays and monodispersive scattering microspheres. This double-layer TiO2 sphere/TNTA photoanode have got many unique structural and optical properties from TiO2 scattering microspheres, such as high specific surface area, multiple interparticle scattering, and efficient light-harvesting. Results indicate that this as-fabricated double-layer TiO2 sphere/TNTA front-illumination dye-sensitized solar cell, which is fabricated from the TiO2 nanotube arrays with a 17.4 μm length after TiCl4 treatment, exhibits a pronounced power conversion efficiency of 7.24% under an AM1.5 G irradiation, which can be attributed to the increased incident photon-to-current conversion and light-harvesting efficiency.
authors.affiliation: Electronic Materials Research Laboratory, School of Electronic and Information Engineering, and ‡International Center for Dielectric Research, Xi'an Jiaotong University , Xi'an 710049, Shaanxi, People's Republic of China.
authors.forename: Zuoli
authors.initials: Z
authors.lastname: He
authors.forename: Wenxiu
authors.initials: W
authors.lastname: Que
authors.forename: Peng
authors.initials: P
authors.lastname: Sun
authors.forename: Jiangbo
authors.initials: J
authors.lastname: Ren
mesh_terms: D004566:Electrodes; D008027:Light; D043942:Nanotubes / Q000737:chemistry*; D012993:Solar Energy; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D014025:Titanium