Dye sensitive solar cells based on Mn-doped ZnO photoelectrodes


Eşgin H. , Çağlar Y.

6th International conference on materials science and nanotechnology for next generation (MSNG2019), Niğde, Turkey, 16 - 18 October 2019, pp.64-69

  • Publication Type: Conference Paper / Full Text
  • City: Niğde
  • Country: Turkey
  • Page Numbers: pp.64-69

Abstract

In present study, Manganase (Mn) doped Zinc Oxide (ZnO) nanopowders, which are also used as electrodes in dye sensitive solar cells, have been deposited by hydrothermal synthesis method. Zinc acetate dihydrate, manganese acetate were used as the starting materials and dopant source. Sodium dodecyl sulfate (NaC12H25SO4; SDS) were used as the surfactant and sodium hydroxide (NaOH) as the reactant. The morphological properties of Mn doped ZnO nanopowders were investigated by scanning electron microscopy (SEM) and the structural properties were examined by X-ray diffractometer (XRD). The Mn doped ZnO nanopowders were coated onto the flourine doped tin oxide (FTO) surfaces by the doctor blade method for the first step of the formation of the dye sensitive solar cell. After coating, Mn doped ZnO films were annealed at 450 °C and then immersed in ruthenium-based dye solution for different immersion time. The dye-absorbed Mn doped ZnO films were combined with Pt counter electrodes to form sandwich type DSSC using sealed adhesive. After electrolyte injection into the DSSC, current-voltage (I-V) curves were obtained under a solar simulator with 1 sun intensity and an AM 1.5 filter. The solar cell parameters of the DSSCs were determined. The performances of the fabricated DSSCs have been compared and the ZM01-DSSC showed a better performance as 2.22% efficiency.