Titanium dioxide nanowires modified tin oxide hollow spheres for dye-sensitized solar cells. (9th September 2016)

• Record Type: Journal Article
• Authors: Wang, Yajie; Fei, Chengbin; Zhang, Rong; Guo, Lixue; Shen, Ting; Tian, Jianjun; Cao, Guozhong
• Is Part Of: MRS communications. Volume 6:Number 3(2016:Sep.)
• Page Start: 226
• Page End: 233
• Publication Date: 2016-09-09
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1557/mrc.2016.34
• Languages: English
• ISSNs: 2159-6859

Abstract

Abstract: Abstract : Tin oxide (SnO2 ) hollow spheres modified with titanium dioxide (TiO2 ) nanowires (NWs) synthesized by sequential hydrothermal reactions were investigated as photoanodes for dye-sensitized solar cells. Not only does the hydrothermal treatment form numerous short TiO2 NWs on the surface of SnO2 spheres, but also passivates the surface of SnO2 . Consequently, the specific surface area of the photoanode and dye loading are almost doubled, at the same time the surface defects and charge recombination are both appreciably reduced. As a result, the short-circuit photocurrent density and open-circuit photovoltage both greatly increased. The power conversion efficiency of the solar cells increases from 0.4% to 2.9%.