Ir(III) complexes are widely used as triplet emitters for multicolor, multilayer organic light-emitting devices (OLEDs) due to their theoretical 100% quantum efficiency. Orange and yellow light-emitting phosphors can furthermore be applied in white light-emitting devices (WOLEDs), together with a blue emitter to form a two component WOLED, which is more facile to fabricate than a three color RGB WOLED. Therefore, highly efficient and bright orange/yellow triplet emitters are in demand and their development is of high technological relevance. We synthesized a new Ir(III) complex featuring a carbazolyl-functionalized ancillary ligand to promote hole trapping at the emitter site that emits orange phosphorescence due to its 6-fluoro-2-phenylbenzo[d]thiazole cyclometalating ligand. This design concept allows the fabrication of OLEDs that reach more than twice the luminance of previously reported devices.

Orange triplet emitter for applications in highly luminous OLEDs

245th National Meeting (2013)

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