Influence of synthesized pyridine and tetra ethylene glycol derivatives in poly (vinylidene fluoride)/poly (ethylene oxide) with Ti coated back contact dye-sensitized solar cells.

• Introduction of novel back contact dye-sensitized solar cells. • Simple cost effective organic compounds. • Blended polymer electrolyte improves electrical conductivity. • Ti metal as back contact electrode based BC DSSC shows efficiency of 8.9%. A newly designed back contact dye-sensitized solar cells (BCDSSC) with back contact electrode (BCE) of Ti for electron collection, is placed on the side opposite to side of light irradiation on TiO 2 with synthesized organic compound doped poly (ethylene oxide)/poly (vinylidene fluoride)/potassium iodide/Iodine polymer electrolyte was introduced for the application of solar energy to electric energy conversion. The surface morphology of the polymer electrolyte study was carried out by SEM, XRD, DSC, DTA, TGA and it proves that the synthesized organic compounds enhances the amorphous nature of the polymer due to well coordinate with redox couple. The movement of I−/I 3 − characterized with UV–vis spectroscopy proves of organic compound with Iodine in the redox couple to decrease the sublimation of iodine. The conductivity of polymer/potassium iodide/iodine/organic compound shows high conductivity of 4.9 × 10−4 S cm−1 and it confirms that the importance of synthesized organic compounds in polymer electrolyte. The TiO 2 /Ti (BCE)/N3dye/PEO/PVdF/Potassium iodide/Iodine/PDSD/Pt compounds yielded an efficiency of 8.9% under illumination of 70 mW cm−2 at A.M. 1.5. [ABSTRACT FROM AUTHOR]