2019 : Preparation of Au@TiO2@SiO2 core-shell nanostructure and their light harvesting capability on DSSC (dye sensitized solar cells)

Dyah Sawitri ST.,MT.
Dr.-Ing Doty Dewi Risanti S.T., M.T
Detak Yan Pratama S.T., M.Sc.


Abstract

One of the methods to enhance the performance of Dye-Sensitized Solar Cell (DSSC) is by adding SiO2 nanoparticles and Au nanoparticles. Au is known to be able to increase light harvesting while silica acts as scatterer and back recombination inhibitor. Gold nanoparticles should be fabricated in core-shell nanostructure to prevent corrosion, recombination and back reaction of excited electron because of direct contact between metal nanoparticles and liquid electrolyte. In this study, the core-shell characteristics of Au@TiO2@SiO2 and their effects on DSSC performance were investigated. The fractions of SiO2 extracted from Sidoarjo mud to Au and TiO2 were varied. The result revealed that the addition of SiO2 above a certain level leads to agglomeration and uneven distribution of core-shell. Only for 90 ml SiO2 addition can form intended core-shell nanoparticles. Compared to DSSC using basic photoanode├é┬á…