A Series of N-Alkylimidazolium Propylhexanamide Iodide for Dye-Sensitized Solar Cells

Bulletin of the Korean chemical society

Young Jun Kim¹  Sunyoung Yoon¹  Sung-Su Lim¹  Heung Bae Jeon¹  Subrata Sarker¹  Jae-Joon Lee¹  Narayan Chandra Deb Nath¹ 

关键词: Imidazolium iodide;    Electrolyte;    Gel electrolyte;    Binary ionic liquid;    Dye-sensitized solar cells;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

We report a series of novel imidazolium iodides based ionic liquids (NMIPHI, NAIPHI, and NBIPHI) with different functional groups for the development of a quasi-solid type electrolyte for dye-sensitized solar cells (DSSCs). The diffusion coefficients of redox ions (I− and I3 −) are dependent on the molecular weight and it was higher for lighter salts. Among the three ionic liquids, NMIPHI showed highest efficiency of 4.18% when it was used in a liquid electrolyte of a DSSC with ca. 6 μm thick TiO2 mesoporous film. Even though the efficiency was ca. 19% lower than that obtained from a liquid electrolyte composed of PMII. When NMIPHI was mixed with PMII with a molar ratio of 1:1 in a solvent free electrolyte, the efficiency of the DSSCs was enhanced compared to that based on pristine PMII.

【 授权许可】

Unknown