| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9776444 | Synthetic Metals | 2005 | 4 Pages |
Abstract
Three thermally stable ter(9,9-disubstitutedfluorene)s with hole-transporting carbazole moieties at two terminals (DCTFs) have been synthesized by modified Ullmann reaction and Pd-catalyzed Suzuki coupling. The resulting compounds are amorphous with glass transition temperature (Tg) in the range of 201-205 °C. The electroluminescence efficiency up to 1.6 cd/A has been achieved with the device structure of ITO/NPB (30 nm)/DCTF-3(30 nm)/BCP (20 nm)/Alq3 (30 nm)/LiF/Al. A 60% increase of efficiency along with the CIE coordinates of (0.16, 0.11) was demonstrated compared with terfluorene (TF) analogue based device.
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Authors
Q. Zhang, J.S. Chen, Y.X. Cheng, Y.H. Geng, L.X. Wang, D.G. Ma, X.B. Jing, F.S. Wang,