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Keywords:

  • TiO2 nanosheets;
  • SnO2 nanotubes;
  • hydrothermal;
  • dye sensitized solar cells;
  • solid electrolyte
Thumbnail image of graphical abstract

Hierarchical nanostructures of TiO2 nanosheets on SnO2 nanotubes (SNT@TNS) are uniformly dispersed in an organized mesoporous (OM) TiO2 film with large pores, high porosity, and good interconnectivity. The solid-state dye sensitized solar cells (ssDSSCs) fabricated with 10 wt% SNT@TNS dispersed in a OM–TiO2 film show an energy conversion efficiency of 7.7% at 100 mW cm−2, which is one of the highest values for N719-based ssDSSCs and much larger than that of a randomly oriented TiO2 nanoparticles-based cell (4.0%).