Fabrication and characterization of sensitized tio2 based dye sensitive solar battery with quercetin cu (ıı) complex

Dye-sensitized solar cells (Dye-Sensitized Solar Cell-DSSC) are third generation solar cells and although they are environmentally friendly and cost-effective among solar cell types, their biggest disadvantage is that they are not at the desired level in terms of efficiency and stability. These disadvantages are an important problem for DSSCs to have a say in the solar cell industry. In this thesis, Quercetin Cu (II) complex was used as a sensitizer in dye sensitized solar cells. For comparison purposes, Cis-bis (isothiocyanato) bis (2,2'-bipyridyl-4,4'-dicarboxylato) ruthenium (II), known as N3 Dye, was used as the sensitizer in the reference battery. TiO2 photoanodes coated with doctor blade technique on ITO coated glass were characterized by XRD and SEM. It was determined from the XRD results that the TiO2 photoanode was in the anatase phase and from the SEM images it was porous, spongy, and approximately 30 gm thickness. The values Voc, Isc, g obtained with Quercetin Cu (II) and N3 dye from the designed batteries was Vo c :0 . 6 V, Isc :0 . 5 7 mA, g: 0.093% and Vo c :0 . 7 6 V, Isc :1.478 mA, g: 0.199%, respectively, under the standard conditions of 1.5 AM (100 mW / cm2). Considering that the best efficiency obtained with N3 dye in previous studies was 10%, it was determined that the efficiency of the battery we prepared with Quercetin Cu (II) would be around 5% when ideal conditions were created. In our study, it was examined in terms of stability, a second parameter that directly affects the performance of the battery. It was observed that the solar cell, in which we used Quercetin Cu (II) complex as a sensitizer, displayed an extremely stable structure in the measurements taken in weekly periods for six weeks.