Research Article
Utilizing Electroplex Emission to Achieve External Quantum Efficiency up to 18.1% in Nondoped Blue OLED
Figure 1
Chemical structures, molecular orbital amplitude plots, and theoretical energy levels of (a) 3Cz-Ph-CN, (b) 3Cz-mPh-CN, and (c) 3Ph-Cz-CN calculated by B3LYP/6-31G (d, p).