Probe exciplex structure of highly efficient thermally activated delayed fluorescence organic light emitting diodes oleh Tzu-Chieh Lin, Monima Sarma, Yi-Ting Chen, Shih-Hung Liu, Ke-Ting Lin, Pin-Yi Chiang, Wei-Tsung Chuang, Yi-Chen Liu, Hsiu-Fu Hsu, Wen-Yi Hung, Wei-Chieh Tang, Ken-Tsung Wong, Pi-Tai Chou