Iridium phosphors with peripheral triphenylamine encapsulation: Highly efficient solution-processed red electrophosphorescence
The peripheral triphenylamine-encapsulated red-emitting iridium(iii) complexes have been designed and synthesized. External quantum efficiency over 15% has been realized in single-layer polymer light-emitting diodes, which is the highest ever reported for solution-processed red phosphorescence. The Royal Society of Chemistry 2012.