Liquid crystal-doped liquid electrolytes for dye-sensitized solar cell applications

Chi Yen Huang, Chang Feng You, Cheng En Cheng, Bi Cheng Lei, Jia Cih Jhang, Fang Cheng Yu, Chen Shiung Chang, Forest Shih Sen Chien

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Abstract

We investigate the effects of liquid crystals (LCs) on the power conversion efficiency of dye-sensitized solar cells (DSSCs). The photovoltaic and electrochemical impedance spectra indicate that minute amounts of LC dopant decrease the short-current density of DSSCs because the doped LCs reduce the electrochemical reaction rate between DSSC counter electrode and electrolyte. The doped LCs delay the degradation rates of DSSCs because of the interaction between cyano groups of the doped LCs and organic solvent in the liquid electrolyte. Owing to the molecular interaction, the doped LCs increase the viscosity and stability, thereby inhibiting the evaporation rate of the liquid electrolyte.

Original languageEnglish
Pages (from-to)1024-1031
Number of pages8
JournalOptical Materials Express
Volume6
Issue number4
DOIs
Publication statusPublished - 2016 Apr 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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    Huang, C. Y., You, C. F., Cheng, C. E., Lei, B. C., Jhang, J. C., Yu, F. C., Chang, C. S., & Chien, F. S. S. (2016). Liquid crystal-doped liquid electrolytes for dye-sensitized solar cell applications. Optical Materials Express, 6(4), 1024-1031. https://doi.org/10.1364/OME.6.001024