Invited paperEffects of alkyl-, polyfluoroalkyl-, and perfluoroalkyl carboxylic acids on the performance of D205 in dye-sensitized solar cells

- 4,4,5,5,6,6,6-Heprafluoro-3,3-bis(trifluoromethyl)hexanoic acid exhibited the highest η value (6.20%) among ten co-adsorbents.
- Prevention of aggregate formation could improve photocurrentdensity.

The effects of co-adsorbents on the performance of D205 in dye-sensitized solar cells were examined. 4,4,5,5,6,6,6-Heprafluoro-3,3-bis(trifluoromethyl)hexanoic acid exhibited the highest conversion efficiency of 6.2% on TiO2 among ten co-adsorbents. This result comes from improved short-circuit photocurrent owing to prevention of aggregate formation.

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