Red Light-Emitting Electrochemical Cells Employing Pyridazine-Bridged Cationic Diiridium Complexes

Maria-grazia La-placa, Ana María Igual-muñoz, Jorge Romero, Ruth Daniels, Valery Kozhevnikov, Michele Sessolo, Henk J. Bolink

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A rigid dinuclear Ir(III) complex showing high photoluminescence quantum yield in pure films was successfully used to fabricate light-emitting electrochemical cells with and without ionic liquid additives. The devices showed nearly instantaneous electroluminescence after biasing and maximum quantum yield approaching 1%. The lifetime of the devices was found to be limited to approximately 20 hours, which we correlated with the irreversible oxidation of the complex as seen from electrochemical measurements. This work validates the use of highly luminescent dinuclear iridium complexes in light-emitting electrochemical cells. Future studies will pursue materials with more efficient photoluminescence as well as improved electrochemical stability.
Original languageEnglish
Pages (from-to)R84-R87
JournalECS Journal of Solid State Science and Technology
Issue number6
Publication statusPublished - 7 Jun 2019


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