Hole transporting material 5, 10, 15-tribenzyl-5H-diindolo[3, 2-a:3′, 2′-c]-carbazole for efficient optoelectronic applications as an active layer*
Zheng Yan-Qionga),b), William J. Potscavageb), Zhang Jian-Huaa)†, Wei Bina), Huang Rong-Juana)
       
EL EQE as a function of current density. Insets: EL spectra, as well as current efficiency as a function of luminance of TBDI and α -NPD based OLEDs.