• 文献标题:   Scalable screen-printing manufacturing process for graphene oxide platinum free alternative counter electrodes in efficient dye sensitized solar cells
  • 文献类型:   Article
  • 作  者:   KUMAR DK, SWAMI SK, DUTTA V, CHEN BX, BENNETT N, UPADHYAYA HM
  • 作者关键词:   graphene oxide, low cost, counter electrode, screen printing, dssc
  • 出版物名称:   FLATCHEM
  • ISSN:   2452-2627
  • 通讯作者地址:   Heriot Watt Univ
  • 被引频次:   4
  • DOI:   10.1016/j.flatc.2019.100105
  • 出版年:   2019

▎ 摘  要

The graphene oxide paste (GO) was prepared by mixing a-terpineol and ethyl cellulose, and GO films was prepared by screen printing on fluorine doped Tin oxide (FTO) glass substrates to validate as an alternative counter electrode material to platinum in dye sensitized solar cells (DSSC). The graphene oxide films were characterised by X-Ray Diffraction, Scanning Electron Microscopy, Raman spectroscopy and the catalytic properties of films were being investigated by cyclic voltammetry and electrochemical Impedance measurements. The DSSC fabricated by coupling TiO2 films soaked in N719 dye with GO as counter electrode exhibited photoconversion efficiency of 5.58% under standard one Sun illumination, whereas platinum based device showed photoconversion efficiency of 7.57%. The present study suggests that graphene oxide counter electrodes can be considered as a promising alternative to platinum, with further optimisation, which clearly has advantages in terms of its abundance and low cost processing towards industrial prospects.