Simultaneous harvesting of triplet excitons in OLEDs by both guest and host materials with an intramolecular charge-transfer feature via triplet-triplet annihilation

Xujun Zheng, Qiming Peng, Jie Lin, Yi Wang, Jie Zhou, Yan Jiao, Yuefeng Bai, Yan Huang, Feng Li, Xingyuan Liu, Xuemei Pu, Zhiyun Lu