Novel hydrophobic ionic liquids electrolyte based on cyclic sulfonium used in dye-sensitized solar cells

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Solar Energy

DOI:https://doi.org/10.1016/J.SOLENER.2010.11.010· OSTI ID:21401365

Guo, Lei; Pan, Xu; Wang, Meng; Zhang, Changneng; Fang, Xiaqin; Chen, Shuanghong; Dai, Songyuan ^[1]

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1. Key Lab of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031 (China)

A novel series of hydrophobic room temperature ionic liquids based on six cyclic sulfonium cations were first time synthesized and applied in dye-sensitized solar cells as pure solvents for electrolyte system. The chronoamperograms result showed that the length of substituent on sulfonium cations could inhibit the I{sub 3}{sup -} diffusion and the five-ring structure of sulfonium was benefit for fast triiodide ion diffusion. The electrochemical impendence spectra measurement of dye-sensitized solar cells with these ionic liquid electrolytes was carried out and the result indicated that the cations' structure had indeed influence on the cells' performance especially for the fill factor, which was further proved by the measurement result of I-V curves of these dye-sensitized solar cells. The conclusion was obtained that the electron exchange reaction on Pt counter electrode/electrolyte interface dominated the cells' performance for these ionic liquid electrolyte-based DSCs. (author)

• OSTI ID: 21401365
• Journal Information: Solar Energy, Vol. 85, Issue 1; Other Information: Elsevier Ltd. All rights reserved; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SOLAR CELLS
CATIONS
ELECTROLYTES
DYES
TEMPERATURE RANGE 0273-0400 K
ELECTRON EXCHANGE
FILL FACTORS
IODINE IONS
DIFFUSION
ELECTRIC IMPEDANCE
PERFORMANCE
ELECTRODES
INTERFACES
SOLVENTS
MOLTEN SALTS
ELECTRIC CONDUCTIVITY
HYDROGEN SULFIDES
SYNTHESIS
Dye-sensitized solar cells
Cyclic sulfonium