| 초록 |
An alcohol soluble phosphorescent blue host, 2,7-Bis(diphenylphosphoryl)-9,9'-spirobi[fluorene] (SPPO13), was synthesized and characterized and alcohol soluble blue phosphorescent dopant, iridium(III) bis(2-(4,6-difluorophenyl)-pyridinato-N,C2)picolonate, was doped into the SPPO13. High efficiency soluble blue phosphorescent organic light emitting diodes with a multilayer emitting structure could be developed. A device structure with double emitting layer and an exciton blocking layer could be fabricated due to orthogonal film formation and a high quantum efficiency of 14.1% and a current efficiency of 30.4 cd/A were achieved in the soluble blue phosphorescent organic light emitting diodes. |
