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Blue light emitting Ir(III) compounds for OLEDs - New insights into ancillary ligand effects on the emitting triplet state

Rausch, A. F. ; Thompson, M. E. ; Yersin, Hartmut



Abstract

The sky-blue emitting phosphorescent compound Ir(4,6 dFppy)₂(acac) (FIracac) doped into different matrices is studied under ambient conditions and at cryogenic temperatures on the basis of broadband and high-resolution emission spectra. The emitting triplet state is found to be largely of metal-to-ligand charge transfer (MLCT) character. It is observed that different polycrystalline and amorphous ...

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