Facile preparation of TiO2 nanoparticles decorated by the graphene for enhancement of dye-sensitized solar cell performance

The results have shown that in the presence of graphene, the dye-sensitized solar cell performance significantly improved by reducing the recombination

Reza Ghayoor; Alireza Keshavarz; Mohammad Navid Soltani Rad

2019

Scholarcy highlights

  • In this work, graphene and graphene oxide were synthesized by the modified Hummers method
  • In order to use graphene in dye-sensitized solar cell, TiO2–graphene was prepared by a simple chemical method and used in the DSSC photoanode at different concentrations of graphene to investigate DSSC performance
  • Utilizing the FE-SEM images, it was observed that accumulation of TiO2 nanoparticles disappeared and a different distribution of nanoparticles was formed on the graphene sheet
  • The results have shown that in the presence of graphene, the DSSC performance significantly improved by reducing the recombination
  • It has been shown that excess graphene concentration is not proper for DSSC performance
  • The best result for TiO2–graphene nanocomposite was obtained when the concentration of 1.5% graphene was applied

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