Figure 6

Current density versus voltage curves of (a) HODs and (b) EODs. Inset: device structure of HODs and EODs with host films (DBFPO (red open circle) or DPEPO (blue open triangle)) or EML films (DBFPO:40% DMAC-DMT (red filled circle) or DPEPO:40% DMAC-DMT (blue filled triangle)).