Controlling optoelectronic properties of carbazole–phosphine oxide hosts by short-axis substitution for low-voltage-driving PHOLEDs
2013
Yang, Weibo | Zhang, Zhensong | Han, Chunmiao | Zhang, Zhen | Xu, Hui | Yan, Pengfei | Zhao, Yi | Liu, Shiyong
Preserved high first triplet energy levels and improved electrical properties of two donor–acceptor type carbazole–phosphine oxide hosts were achieved through short-axis substitution to realize efficient PHOLEDs with extremely low driving voltages of 2.6 V for onset and <3.2 V at 100 cd m⁻².
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