title: Low molecular mass organogelator based gel electrolyte with effective charge transport property for long-term stable quasi-solid-state dye-sensitized solar cells.
abstract: Stable quasi-solid-state dye-sensitized solar cells (DSC) were fabricated using 12-hydroxystearic acid as a low molecular mass organogelator (LMOG) to form gel electrolyte. TEM image of the gel exhibited the self-assembled network constructed by the LMOG, which hindered flow and volatilization of the liquid. The formation of less-mobile polyiodide ions such as I 3 (-) and I 5 (-) confirmed by Raman spectroscopy increased the conductivity of the gel electrolytes by electronic conduction process, which should be rationalized by the Grotthuss-type electron exchange mechanism caused by rather packed polyiodide species in the electrolytes. The results of the accelerated aging tests showed that the gel electrolyte based dye-sensitized solar cell could retain over 97% of its initial photoelectric conversion efficiency value after successive heating at 60 degrees C for 1000 h and device degradation was also negligible after one sun light soaking with UV cutoff filter for 1000 h.
authors.affiliation: Division of Solar Energy Materials and Engineering, Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP), Hefei, P. R. China
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Huo
authors.forename: Songyuan
authors.initials: S
authors.lastname: Dai
authors.forename: Changneng
authors.initials: C
authors.lastname: Zhang
authors.forename: Fantai
authors.initials: F
authors.lastname: Kong
authors.forename: Xiaqin
authors.initials: X
authors.lastname: Fang
authors.forename: Lei
authors.initials: L
authors.lastname: Guo
authors.forename: Weiqing
authors.initials: W
authors.lastname: Liu
authors.forename: Linhua
authors.initials: L
authors.lastname: Hu
authors.forename: Xu
authors.initials: X
authors.lastname: Pan
authors.forename: Kongjia
authors.initials: K
authors.lastname: Wang