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, Figure 1. Configuration and molecular structures (a) of 2tDMG and 3tDMG; HOMO and LUMO orbital distributions of (b) 2tDMG and (c) 3tDMG. Reduced density gradient (RDG) CIE

, a) Values of external quantum efficiency (EQE), power efficiency (PE) and current efficiency (CE) at the maximum, 1000 cd/m 2 , and 4000 cd/m 2 , respectively