N-Methyl-N-Allylpyrrolidinium Based Ionic Liquids for Solvent-Free Dye-Sensitized Solar Cells


Autoria(s): Cai N; Zhang J; Zhou DF; Yi ZH; Guo J; Wang P
Data(s)

2009

Resumo

We prepared four new ionic liquids consisting of N-methyl-N-allylpyrrolidinium cation in conjunction with anions including iodide, nitrate, thiocyanate, and dicyanamide, respectively, and measured their physical properties of density, viscosity, and conductivity. Owing to the relatively lower melting point of electroactive N-methyl-N-allylpyrrolidinium iodide, in combination with three other nonelectroactive ionic liquids, we could construct solvent-free electrolytes possessing high iodide concentrations for dye-sensitized solar cells. We correlated temperature-dependent electrolyte viscosity with molar conductivity and triiodide mobility through applying an empirical Walden's rule and a modified Stokes-Einstein equation, respectively. We have further found that these anions (nitrate, thiocyanate, and dicyanamide) have different influences on surface states and electron transport in the mesoporous titania film, resulting in different photovoltages and photocurrents of dye-sensitized solar cells.

Identificador

http://202.98.16.49/handle/322003/12367

http://www.irgrid.ac.cn/handle/1471x/148596

Idioma(s)

英语

Fonte

Cai N;Zhang J;Zhou DF;Yi ZH;Guo J;Wang P.N-Methyl-N-Allylpyrrolidinium Based Ionic Liquids for Solvent-Free Dye-Sensitized Solar Cells,JOURNAL OF PHYSICAL CHEMISTRY C ,2009,113(10 ):4215-4221

Palavras-Chave #INTENSITY-MODULATED PHOTOVOLTAGE #PLASTIC CRYSTAL ELECTROLYTE #TEMPERATURE MOLTEN-SALTS #BAND-EDGE MOVEMENT #CHARGE-TRANSPORT #PHOTOCURRENT SPECTROSCOPY #CONVERSION EFFICIENCY #PYRROLIDINIUM CATIONS #GEL ELECTROLYTE #BACK-REACTION
Tipo

期刊论文