Bipolar Phenanthroimidazole Derivatives Containing Bulky Polyaromatic Hydrocarbons for Nondoped Blue Electroluminescence Devices with High Efficiency and Low Efficiency Roll-Off

By Yi Yuan, Jiaxiong Chen, Feng Lu, Qingxiao Tong, Qingdan Yang, H. Mo, T. Ng, F. Wong, Zhengqing Guo, Jun Ye and 3 more. 2013

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