Bolink, Henk J.;Cappelli, Luca;Coronado, Eugenio;Grätzel, Michael;Ortí, Enrique;Costa, Rubén D.;Viruela, Pedro M.;Nazeeruddin, Md. K. Stable Single-Layer Light-Emitting Electrochemical Cell Using 4,7-Diphenyl-1,10-phenanthroline-bis(2-phenylpyridine)iridium(III) Hexafluorophosphate Journal of the American Chemical Society 2006 128 46 14786-14787