Synthesis, photophysical and electro-optical properties of bis-carbazolyl methane based host material for pure-blue phosphorescent OLED
| Autor: | Seunghan Shin, Kyoung Soo Yook, Seok-Ho Hwang, Byoung-Joon Moon, Jun Yeob Lee |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Carbazole Biophysics chemistry.chemical_element General Chemistry Condensed Matter Physics Photochemistry Biochemistry Atomic and Molecular Physics and Optics law.invention chemistry.chemical_compound chemistry law Pyridine Phosphorescent organic light-emitting diode Quantum efficiency Thermal stability Iridium Phosphorescence Diode |
| Zdroj: | Journal of Luminescence. 132:2557-2560 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2012.05.011 |
| Popis: | A new high triplet-energy host material, 9-(4-(bis(9-ethyl-9 H -carbazol-3-yl)methyl)phenyl)-9 H -carbazole (bis-CMPC), was synthesized and its device performance of phosphorescent organic light-emitting diode was investigated. This host material showed a high triplet energy (∼2.95 eV) and good thermal stability. Highly efficient pure-blue PHOLED was obtained when employing bis-CMPC as the host material and bis((3,5-difluoro-4-cyanophenyl)pyridine) iridium picolinate as the guest material. The maximum external quantum efficiency of the device reached as high as 13.3% with a pure-blue color coordinate of (0.14, 0.21). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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