Holcombe, Thomas WesleyYum, Jun HoNazeeruddin, Md KhajaGraetzel, Michael2017-05-242017-05-242017-05-242015https://infoscience.epfl.ch/handle/20.500.14299/137549The present invention relates to compounds of formula (I) based on DPP moiety being useful as metal-free organic sensitizers or dyes of type D-Pi-A in electrochemical or optoelectronic devices, their use as sensitizer or dye and an electrochemical or optoelectronic device comprising a compound of the invention.patentKR102171481US9697956JP6139681EP2892977CN104937072EP2892977JP2015534541CN104937072US2015213966EP2892977KR20150053268WO2014033582WO2014033582EP270346846940281