Fig. 1: Chemical structures of the investigated molecules and relative molecular orbital energy between radical dopants and host materials.
From: Intrinsic intermolecular photoinduced charge separation in organic radical semiconductors

a,b, Chemical structures of TTM-based radical emitters (a) and host materials (b) investigated in this study. c, Corresponding molecular orbital energy alignment of P3TTM and host materials. The host materials only show the HOMO energy (energies are indicative and estimated from reported values18,24,25,26,27).