High-performance novel acidic ionic liquid polymer/ionic liquid composite polymer electrolyte for dye-sensitized solar cells

The acidic ionic liquid polymer P [((3-(4-vinylpyridine) propanesulfonic acid) iodide)-co-(acrylonitrile)], which is named as P-HI for short, has been employed in ionic liquid electrolyte for dye-sensitized solar cells. The novel acidic ionic liquid polymer/ionic liquid composite polymer electrolyte does not contain iodine, and the performance of this electrolyte has been evaluated by studying the content of P-HI and the iodine concentration on the performance of dye-sensitized solar cells. The cell based on electrolyte containing 20 wt.% P-HI yields an overall energy conversion efficiency of 6.95% under AM 1.5 illumination at 100 mW cm−2. Keywords: Acidic ionic liquid polymer, Ionic liquid, Electrolyte, Dye-sensitized solar cells