| 초록 |
We fabricated a highly efficient inverted phosphorescent green TEOLED with the EQE of 23.4% and the current efficiency of 110 cd/A at 1,000 cd/m2 and low efficiency roll-off up to 10,000 cd/m2 by using an IZO top electrode. In addition, the OLED with the IZO top electrode showed much better color stability with viewing angle than the OLED with the Ag top electrode. The results clearly indicate that a transparent top electrode performs much better than the thin metal top electrode for top emission OLEDs in terms of efficiency and color stability by using the HATCN/ sputtered IZO electrode. |
