Efficiency enhancement with chloride to iodide ion exchange of benzimidazolium salt as a redox mediator

Authors : Serkan DAYAN, Mert Olgun KARATAS, Bulent ALİCİ, Nilgun KALAYCİOGLU OZPOZAN

Pages : 333-341

View : 18 | Download : 11

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The new benzimidazolium derivative insert ignore into journalissuearticles values(SM-1); salt with ion exchange from the insert ignore into journalissuearticles values(SM-0); was fabricated and characterized by proton-nuclear magnetic resonance insert ignore into journalissuearticles values(H-1-NMR);, carbon-nuclear magnetic resonance insert ignore into journalissuearticles values(C-13-NMR);, Fourier-transform infrared spectroscopy insert ignore into journalissuearticles values(FTIR);, electrospray ionization insert ignore into journalissuearticles values(EIS-MS);, thermal analysis insert ignore into journalissuearticles values(TG);, cyclic voltammetry insert ignore into journalissuearticles values(CV);, and ultraviolet-visible spectroscopy insert ignore into journalissuearticles values(UV-vis);, for electrolytes insert ignore into journalissuearticles values(liquid or dried); in the DSSC charge transportation mechanism. Also, the influence of ion exchange from chloride to iodine in the synthesized electrolytes, compared to other electrolytes insert ignore into journalissuearticles values(conventional or commercial);, was investigated about DSSC performance efficiency. When using as a liquid electrolyte insert ignore into journalissuearticles values(SM-1);, the power conversion efficiency insert ignore into journalissuearticles values(eta); of the working DSSC device was recorded as 1.980% and it was observed that the performances of DSSCs increased up to 56% when comparing dried electrolyte for SM-1 without conventional redox material insert ignore into journalissuearticles values(I-/I3-);. In the future, different molecular modifications of this type of benzimidazole derivatives or mixtures with conventional redox couples may further improve the performance of DSSC devices.
Keywords : Benzimidazole, DSSC, photovoltaics, dye sensitized solar cell