Dye-sensitized Nano-TiO2 Thin Memberane Solar Cells Based on P(VDF-HFP)-type Gel Electrolytes

Abstract

Abstract: The I^-₃/I^-redox behavior for gel electrolytes and liquid electrolyte was studied by cyclic voltammetry.It is found that the apparent diffusion coefficient(D) values of triiodide and iodide ions in gel electrolytes were apparently lower than those in liquid electrolyte,the former were about third of the latter.The conductivity measurement of the gel electrolyte containing different sum of P(VDF-HFP) shows that the conductivity decreases with increasing the sum of P(VDF-HFP) in gel electrolyte.It may be due to that the pore is not well connected and the ionic transport is hindered by the pore blockage.We fabricated quasi-solid state dye-sensitized nano-thin membrane solar cells using gel electrolyte containing poly(vinylidenefluoride-co-hexafluoropropylene)(PVDF-HFP) which showed an comparable photo-electric conversion efficiency to the liquid cell.The quasi-solid state solar cell with 5%P(VDF-HFP) showed the values of 0.70 V for open-circuit voltage,15.52 mA/cm² for short-circuit photocurrent density,0.62 and 6.61% for Fill Factor and photo-electric conversion efficiency under the illustration of AM 1.5(100 mW/cm),respectively.

Key words: P(VDF-HFP), Gel electrolyte, Dye-sensitization, Solar cell

CLC Number:

O645
O631

TrendMD:

GUO Li, DAI Song-Yuan, WANG Kong-Jia, FANG Xia-Qin, SHI Cheng-Wu, PAN Xu . Dye-sensitized Nano-TiO₂ Thin Memberane Solar Cells Based on P(VDF-HFP)-type Gel Electrolytes[J]. Chem. J. Chinese Universities, 2005, 26(10): 1934.

References

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Dye-sensitized Nano-TiO₂ Thin Memberane Solar Cells Based on P(VDF-HFP)-type Gel Electrolytes

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