《Table 1 Physical properties of the pure and W-doped meso-porous TiO2》

  提示：宽带有限、当前游客访问压缩模式

本系列图表出处文件名：随高清版一同展现

《Towards Improvement of Photovoltaic Performance of Aqueous Dye-sensitized Solar Cells by Tungsten-doped Mesoporous Nanobeads TiO_2 Working Electrode》

1. 获取 高清版本忘记账户？点击这里登录

1. 下载图表忘记账户？点击这里登录

Pore diameter（PD），pore volume（Vsp）and BET specific surface area （SBET）

Nitrogen gas sorption was used to measure the specific surface area and porosities of the non-doped and doped mesoporous TiO2 and the physical properties are summarized in Table 1 and Fig.3.Mesoporous TiO2beads of a sub-micron size has proven superior DSC performance[26-28].This is attributed to the large surface area for sensitizer adsorption，preferable porosity to ensure an ease of access for the sensitizer molecules and the electrolyte，as well as a great light trapping effect for efficient light harvesting.All undoped and W-doped samples give type VI isotherms with H1type hysteresis loops indicating mesoporous nature.Specific surface area calculation results also reveal a small variation of the superior specific surface areas from 107.1 to 118.7 m2·g-1 that agrees well with SEM and XRD analyses on minor influence from W-doping on morphology change.The gas sorption results also suggest a slightly developed pore diameter as the poresize distribution centres gradually refocused from 12.8to 13.9 nm.Such negligible changes on specific surface areas and porosity from W-doping suggest that the abilities of dye-loading，electrolyte access rate and light harvesting are highly likely to be inherited from the undoped TiO2 beads.