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Updated: Jun 17, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Coumarin-based, electron-trapping iridium complexes as highly efficient and stable phosphorescent emitters for
Xiaofan Ren1, Marina E Kondakova, David J Giesen
1Research Laboratories, Eastman Kodak Company, 1999 Lake Avenue, Rochester, New York 14650-2103, USA. xiaofan.ren@kodak.com
Abstract:
A new class of coumarin-based iridium tris-cyclometalated complexes has been developed. These complexes are highly emissive, with emission colors ranging from green to orange-red. Besides modification of ligand structures, color tuning was realized by incorporation of ligands with different electrochemical properties in a heteroleptic structure. The organic light-emitting diodes (OLEDs) using these compounds as emissive dopants are highly efficient and stable. Unlike other Ir(III) phosphorescent dopants, these coumarin-based Ir(III) dopants can effectively trap and transport electrons in the emissive layer.
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