Fig. 1: Properties of the hole-transporting interlayers.
From: High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence
a The synthetic procedure for the preparation of fluorinated TQs. b The chemical structures of TQ2f and T2fQ used as hole-transporting interlayers, the calculated frontier orbitals and energy levels as derived from cyclic voltammetry, and absorption measurements and the lower excited singlet and triplet levels of TQ2f and T2fQ. The room temperature (RT, 300 K) and low temperature (80 K) photoluminescence spectra of c TQ2f and d T2fQ thin films.
