A high temperature stable electrolyte system for dye-sensitized solar cells

✍ Scribed by Hak-Soo Lee; Sang-Hoon Bae; Yimhyun Jo; Kang-Jin Kim; Yongseok Jun; Chi-Hwan Han

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 403 KB
• Volume: 55
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/j.electacta.2010.07.011

✦ Synopsis

The effect of the addition of single and binary additives to a mixed solvent, ethylene carbonate + ␥butyrolactone, on the performance of dye-sensitized TiO 2 solar cells (DSSCs) has been investigated. The addition of a single additive, 2-(dimethylamino)-pyridine, to the electrolyte containing an ionic salt, 1,2-dimethyl-3-propylimidazolium iodide, in the mixed solvent results in an enhancement of the cell performance. The performance of the cell has been further enhanced by the addition of the second additive, 5-chloro-1-ethyl-2-methylimidazole. The resulting DSSC has performed better than the one based on the conventional electrolyte in acetonitrile. The dependence of the stability of the cells on the temperature has been evaluated over the range of 30-120 • C for outdoor applications.