| 초록 |
We have designed and synthesized acridine-triphenylamine based hole transporting material 4-(9,9-diphenylacridin-10(9H)-yl)-N-(4-(9,9-diphenylacridin-10(9H)-yl) phenyl)-N-phenylaniline (TPA-1A) for phosphorescence OLED applications. TPA-1A exhibited excellent thermal stabilities, with a higher decomposition temperature of 474 oC at 5 % weight reduction. To investigate the hole transporting and injecting properties, green PhOLED was fabricated with TPA-1A and device performances were compared with well-known NPB based similar device. The current efficiency was 44.29 cd/A which is higher than that of NPB based reference device (33.38 cd/A). TPA-1A as hole injecting layer device showed an outstanding power and external quantum efficiencies of 32.37 lm/W, 14.59 %, respectively. TPA-1A based device revealed outstanding device efficiencies when compare to reference NPB based device. |
