期刊
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
卷 31, 期 12, 页码 3711-3717出版社
WILEY-V C H VERLAG GMBH
DOI: 10.5012/bkcs.2010.31.12.3711
关键词
Fluorine; Phosphorescent OLEDs; Ir(III) complex; 5-Benzoyl-2-phenylpyridine ligand
资金
- Ministry of Education, Science and Technology [20100007370]
Four orange-red phosphorescent Ir(III) complexes were designed and synthesized based on the benzoylphenylpyridine ligand with a fluorine substituent. Multilayered OLEDs with the device structure, ITO/2-TNATA/NPB/CBP : 8% Ir(III) complexes/BCP/Liq/Al, were fabricated using these complexes as dopant materials. All the devices exhibited orange-red electroluminescence and their electroluminescent properties were quite sensitive to the structural features of the dopants in the emitting layers. Among these, the maximum luminance (14700 cd/m(2) at 14.0 V) was observed in the device containing Ir(III) complex 1 as the dopant. In addition, its luminous, power and quantum efficiency were 11.7 cd/A, 3.88 lm/W and 9.58% at 20 mA/cm(2), respectively. The peak wavelength of electroluminescence was 606 nm with CIE coordinates of (0.61, 0.38) at 12.0 V. The device also showed stable color chromaticity with various voltages.
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