Diah Susanti, Haniffudin Nurdiansah, Hariyati Purwaningsih, Rindang Fajarin : The Application of TiO2/Graphene Composite for Dye Sensitized Solar Cell (DSSC)

Diah Susanti ST.,MT.,Ph.D
Haniffudin Nurdiansah S.T., M.T.
Hariyati Purwaningsih SSi, MSi
Rindang Fajarin S.Si., M.Si

Year

2015

Published in

The 2nd International Conference on Materials and Metallurgical Technology 2015 (ICOMMET 2015)

External link

-

Type

Seminar Internasional

Keywords

dye-sensitized solar cell TiO2/graphene efficiency.


Abstract

Solar cell (SC) is one of some solutions to overcome energy crisis. The solar energy is abundant and free to be used. Besides, it is also eco-friendly. In this research Dye Sensitized Solar Cell (DSSC) was prepared from a composite material of TiO2/graphene which was spin-coated on top of fluorine-doped tin oxide (FTO) glass. Geranium flower was used as the dye for its high visible-light absorbance. TiO2 is a semiconductor frequently applied as a DSSC material since it is capable to convert solar energy into electrical energy. Meanwhile graphene is a single layer of carbon which has high electrical conductivity. The combination of the characteristics of both TiO2 and graphene was expected to increase the efficiency of DSSC. In this research, graphene was prepared via modified Hummer method followed by hydrothermal process. The effects of the weight percentage variations between graphene and TiO2 (0, 5, 10 and 15) towards SC efficiency were compared and analyzed. The structure and morphology of the materials were characterized using Scanning Electron Microscope (SEM) and X-Ray Diffractometer (XRD). DSSC electrical performances were measured using solar simulator. As a result, the DSSC prepared from 10 graphene showed the highest fill factor of 69 and the highest efficiency of 0.0053 in converting solar energy into electrical energy. These results were much less than the efficiency of silicone based SC. However this research could reveal the potency of the composite material TiO2/graphene as a material for a DSSC.