Anvendelse af Deep Eutectic Solvents i Dye-sensitized Solar Cells

Kenneth Jack Jensen, Stefan Bisgaard, Michelle Hundevad Rasmussen, Cecilie Lønbæk Nielsen, Fahima Yasen, Helene Huldgaard Christensen & Prince Ravichandran

Studenteropgave: Semesterprojekt

Abstrakt

Over the course of this project, we have investigated the new type of ionic liquids called Deep Eutectic Solvents (DES), as well as the application of a specific DES as electrolyte in a Dye-Sensitized Solar Cell (DSC). To assess the application, we have conducted results in form of viscosity, conductivity, stability of the dye and efficiency of the DES electrolyte, compared to two applied electrolytes, A and B, found in the literature. Of these electrolytes, A is nitrile based and B is imidazolium based. The stability of the Z907 dye in the DES electrolyte was examined by heating the Z907, which was bonded to the surface of TiO2 particles, at 100C for a week. The result was a 32% conversion of the dye from RuLL' 〖(NCS)〗_2 to RuLL' (NCS) (MBI)^+, whereas only 8% had been converted in the B electrolyte. Based on this stability test a theoretical loss of efficiency was calculated to 19% in the produced DSC with DES as electrolyte. In contrast, the DES electrolyte showed a conversion of sunlight to electricity, which was at level with that of electrolyte B. From these results it has been concluded, that the DES electrolyte’s interaction with the dye must be optimized for the possible application of the DES electrolyte in DSC.

UddannelserBasis - Naturvidenskabelig Bacheloruddannelse, (Bachelor uddannelse) Basis
SprogDansk
Udgivelsesdato1 jan. 2016
VejledereTorben Lund

Emneord

  • DES
  • Deep eutectic solvents
  • DSC
  • dye sensitized solar cells
  • green chemistry