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Efficient Green Phosphorescent Polymer Light-emitting Diodes Based on Cyclometalated Iridium Complex
Efficient Green Phosphorescent Polymer Light-emitting Diodes Based on Cyclometalated Iridium Complex
- Source :
- Chinese Journal of Luminescence. 32:368-373
- Publication Year :
- 2011
- Publisher :
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 2011.
-
Abstract
- A novel iridium complex with sterically bulky camphor-derives group as β-diketonate,i.e.,(2-phenylpyridinato-N,C2′) irdium(Ⅲ)(3-acetyl-camphor) [Ir(ppy)2(acam)],was synthesized and it was characterized by 1H NMR,ESI-MS,and elementary analysis.This complex exhibited a higher phototoluminescence quantum efficiency(0.54) than(2-phenylpyridinato-N,C2′) irdium(Ⅲ)(acetylacetonate) [Ir(ppy)2(acac)](0.34) in 2-methyl-tetrahydrofuran solution.Efficient green phosphorescent polymer light-emitting diodes using Ir(ppy)2(acam) as dopants showed high efficiencies and stable EL spectra,with maximum current efficiency of 15.1 cd/A,maximum power efficiency of 4.23 lm/W and maximum brightness of 9 939 cd/m2 at doping mass fraction of 1%.
- Subjects :
- chemistry.chemical_classification
Radiation
Materials science
Dopant
business.industry
Doping
chemistry.chemical_element
Polymer
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
chemistry
Optoelectronics
Physical chemistry
Quantum efficiency
Iridium
business
Phosphorescence
Mass fraction
Diode
Subjects
Details
- ISSN :
- 10007032
- Volume :
- 32
- Database :
- OpenAIRE
- Journal :
- Chinese Journal of Luminescence
- Accession number :
- edsair.doi...........3645fa3dd67f56311ed42567ccb61528
- Full Text :
- https://doi.org/10.3788/fgxb20113204.0368