Efficient Fluorescent Deep-Blue and Hybrid White Emitting Devices Based on Carbazole/Benzimidazole Compound
The Journal of Physical Chemistry C2011Vol. 115(29), pp. 14347–14352
Citations Over TimeTop 10% of 2011 papers
Xiaohui Yang, Shijun Zheng, Rebecca Bottger, Hyun Sik Chae, Takeshi Tanaka, Sheng Li, Amane Mochizuki, Ghassan E. Jabbour
Abstract
We report the synthesis, photophysics, and electrochemical characterization of carbazole/benzimidazole-based compound (Cz-2pbb) and efficient fluorescent deep-blue light emitting devices based on Cz-2pbb with the peak external quantum efficiency of 4.1% and Commission Internationale dÉnclairage coordinates of (0.16, 0.05). Efficient deep-blue emission as well as high triplet state energy of Cz-2pbb enables fabrication of hybrid white organic light emitting diodes with a single emissive layer. Hybrid white emitting devices based on Cz-2pbb show the peak external quantum efficiency exceeding 10% and power efficiency of 14.8 lm/W at a luminance of 500 cd/m2. © 2011 American Chemical Society.
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