title: Controlled fabrication of TiO2 rutile nanorod/anatase nanoparticle composite photoanodes for dye-sensitized solar cell application.
abstract: We present a straightforward procedure to prepare composite photoanodes which consisted of TiO2 rutile nanorods/anatase nanoparticles synthesized under hydrothermal conditions, with the ratio of rutile to anatase controlled simply by adjusting the volume of nitric acid. The as-prepared TiO2 composites exhibited high specific surface area, light-scattering effect, and good crystallinity. The dye-sensitized solar cells (DSCs) using the TiO2 composites showed higher short-circuit photocurrent and overall conversion efficiency than the DSC from pure-anatase nanoparticles. The highest conversion efficiency was achieved from the DSC based on TiO2 nanocomposites with 24 wt% rutile nanorods, which was attributed to improved light harvesting caused by the enhancement of specific surface area and scattering effect from rutile nanorods.
authors: Advanced Photovoltaics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan.
authors: Wenqin
authors: W
authors: Peng
authors: Masatoshi
authors: M
authors: Yanagida
authors: Liyuan
authors: L
authors: Han
authors: Shahat
authors: S
authors: Ahmed