Title :
Color Tuning Dopants for Electrophosphorescent Devices: Efficient Blue Phosphorescence Pyrrazole and Carbene Complexes
Author :
Thompson, Mark E. ; Tamayo, Arnold ; Sajoto, Tissa ; Djurovich, Peter ; Forrest, Stephen R. ; Holmes, Russell J. ; Brown, Julie ; Brooks, Jason
Author_Institution :
Dept. of Chemistry, University of Southern California, Los Angeles, CA 90089
Abstract :
In this paper, we describe several new Ir complexes for achieving efficient blue electrophosphorescence. The approach described here for achieving blue phosphorescence is to shift the cyclometallated ligand from phenyl-pyridine to either a phenyl pyrrazole or phenyl-imidazole. Both complexes emit strongly in the near UV, however, only the imidazole complex (carbene ligand) emits strongly at room temperature.
Keywords :
Chemistry; Displays; Electromagnetic coupling; Excitons; Fluorescence; Organic light emitting diodes; Phosphorescence; Phosphors; Radiative recombination; Temperature;
Conference_Titel :
Lasers and Electro-Optics, 2005. CLEO/Pacific Rim 2005. Pacific Rim Conference on
Print_ISBN :
0-7803-9242-6
DOI :
10.1109/CLEOPR.2005.1569508
