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Polymer-based blue electrophosphorescent light-emitting diodes based on a new iridium(III) diazine complex

Authors :
Ge, Guoping
Yu, Xiaohang
Guo, Haiqing
Wang, Fuzhi
Zou, Dechun
Source :
Synthetic Metals. Jun2009, Vol. 159 Issue 12, p1178-1182. 5p.
Publication Year :
2009

Abstract

Abstract: Polymer-based blue electrophosphorescent light-emitting diodes are reported by doping iridium(III) diazine complex (DFPPM)2Ir(pic) (DFPPM=2-(2,4-difluorophenyl)-pyrimidine, pic=picolinate) in poly(vinylcarbazole) (PVK) as the source of emission. The iridium(III) diazine complex shows sky blue emission with its maximum emission peak at 476nm originating from an admixture of triplet metal-to-ligand charge-transfer and ligand-centered states. The (DFPPM)2Ir(pic)-doped device furnishes a maximum external quantum efficiency of 2.2% and power efficiency of 1.9lm/W at a 10wt% doping concentration. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
03796779
Volume :
159
Issue :
12
Database :
Academic Search Index
Journal :
Synthetic Metals
Publication Type :
Academic Journal
Accession number :
41683685
Full Text :
https://doi.org/10.1016/j.synthmet.2009.02.007