Vahid Jabbari - Band gap engineering of TiO 2 nanostructure-based dye solar cells (DSCs) fabricated via electrophoresis

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  Publication Details (including relevant citation   information):

  Surface and Coatings Technology 206 (22), 4531-4538

  Abstract:

  This work describes a simple method utilizing electrophoretic   deposition (EPD) as versatile technique to deposit of commercial   TiO2 (P25) nanopartcles (NPs) films on the   fluoride-doped tin oxide (FTO) substrate. The main goal of this   study is investigating the effects of surface treatment on the   properties of nanoporous P25 electrodes in order to efficiently   control and optimize the main fabrication step of the   dye-sensitized solar cells (DSSCs). In order to increase of the   electron transfer efficiency in DSSC, post-treatment of P25 films   using TiCl4 has been carried out. As a result, cell   efficiencies were improved about 40%. Solar cells based on a   core–shell structure, including a ZnO as shell and a P25 as core,   have been investigated. Results demonstrated that ZnO/P25 film   electrode was enable to enhance of short-circuit photocurrent   density (JSC) and consequently solar conversion   efficiency for a DSSC by 10%, compared to those of a DSSC   containing a bare P25 film electrode. The results were attributed   to increase the concentration of free electrons in the conduction   band (CB) of P25.

  Address (URL): doi:10.1016/j.surfcoat.2012.03.017

 

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