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High-Efficiency Deep-Blue Light-Emitting Diodes Based on Phenylquinoline/Carbazole-Based Compounds
Cited 170 time in
Web of Science
Cited 170 time in Scopus
- Authors
- Issue Date
- 2008-11-14
- Publisher
- Wiley-Blackwell
- Citation
- Adv. Funct. Mater. 2008, 18, 3922
- Keywords
- blue-light emitters ; carbazoles ; electroluminescence ; energy transfer ; organic light-emitting diodes
- Abstract
- Highly efficient deep-blue fluorescent materials based on phenylquinoline-carbazole derivatives (PhQ-CVz, MeO-PhQ-CVz, and CN-PhQ-CVz) are synthesized for organic light-emitting diodes (OLEDs). The materials form high-quality amorphous thin films by thermal evaporation and the energy levels can be easily adjusted by the introduction of different electron-donating and electron-withdrawing groups on carbazoylphenylquinoline. Non-doped deep-blue OLEDs that use PhQ-CVz as the emitter show bright emission (Commission Internationale de L'Éclairage (CIE) coordinates, x = 0.156, y = 0.093) with an external quantum efficiency of 2.45%. Furthermore, the material works as an excellent host material for 4,4-bis(9-ethyl-3-carbazovinylene)-1,1-biphenyl dopant to get high-performance OLEDs with excellent deep-blue CIE coordinates (x = 0.155, y = 0.157), high power efficiency (5.98 lm W-1), and high external quantum efficiency (5.22%).
- ISSN
- 1616-301X (print)
1616-3028 (online)
- Language
- English
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