Xi, ChengchengCao, YimingCheng, YuemingWang, MingkuiJing, XiaoyanZakeeruddin, Shaik M.Graetzel, MichaelWang, Peng2010-11-302010-11-302010-11-30200810.1021/jp802798khttps://infoscience.epfl.ch/handle/20.500.14299/61189WOS:000257724100068Binary melts of S-ethyltetrahydrothiophenium iodide and dicyanoamide (or tricyanomethide) have been employed for dye-sensitized solar cells with high power conversion efficiencies up to 6.9% under the illumination of AM 1.5G full sunlight. We have further shown that the transport of triiodide in ionic liquids with high iodide concentration is viscosity-dependent in terms of a physical diffusion coupled bond exchange mechanism apart from the simple physical diffusion. In addition, we have found that some anions of ionic liquid electrolytes such as dicyanoamide have a significant influence on surface states and electron transport in the mesoporous semiconducting film.Charge-TransportRuthenium SensitizerTio2 NanocrystalsRedox CoupleElectrolytesRecombinationSaltsPolyiodidesConversionDiffusiontext::journal::journal article::research article