Exciplex formation and electroluminescent absorption in ultraviolet organic light-emitting diodes*
Zhang Qia), Zhang Haoa), Zhang Xiao-Wenb)†, Xu Taoa), Wei Bina)‡
       
(a) Normalized PL spectrum of neat CBP in a solid-state film and the normalized EL spectrum of device A. (b) Normalized PL spectrum of neat TCTA in a solid-state film and the normalized EL spectrum of device B. Insets in panels (a) and (b) show the schematic energy level diagrams of devices A and B, respectively.