Lau, Genevieve P. S.Decoppet, Jean-DavidMoehl, ThomasZakeeruddin, Shaik M.Graetzel, MichaelDyson, Paul J.2016-02-162016-02-162016-02-16201510.1038/srep18158https://infoscience.epfl.ch/handle/20.500.14299/123889WOS:000366480300002Novel ionic liquid-sulfolane composite electrolytes based on the 1,2,3-triazolium family of ionic liquids were developed for dye-sensitized solar cells. The best performing device exhibited a short-circuit current density of 13.4 mA cm(-2), an open-circuit voltage of 713 mV and a fill factor of 0.65, corresponding to an overall power conversion efficiency (PCE) of 6.3%. In addition, these devices are highly stable, retaining more than 95% of the initial device PCE after 1000 hours of light-and heat-stress. These composite electrolytes show great promise for industrial application as they allow for a 14.5% improvement in PCE, compared to the solvent-free eutectic ionic liquid electrolyte system, without compromising device stability.text::journal::journal article::research article