| 초록 |
Highly efficient blue emitting material (DAnP) consisting of anthracene and pyrene was designed and synthesized. The PLmax of the DAnP is 469 nm in the solution state and 480 nm in the film state. DAnP was used as non-doped emitting layer (EMLs) in OLEDs with the following structures: ITO/2-TNATA (60 nm)/NPB (15 nm)/DAnP (35 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm). The DAnP device has current efficiency of 5.45 cd/A, power efficiency of 2.71 lm/W, and CIEs of (0.19, 0.40) at 10 mA/cm2. An efficient multilayer white organic light-emitting diode (WOLED) with the structure of ITO/NPB (30 nm)/CBP: 3 wt% Ir(piq)3 (10 nm)/DAnP (40 nm)/TPBi (40 nm)/LiF (1 nm)/Al (200 nm) was fabricated and characterized, where DAnP and tris(1-phenylisoquinoline) iridium (III) [Ir(piq)3] were used as a blue fluorescent emitter and a red phosphorescent emitter respectively. A WOLED showed current efficiency of 5.08 cd/A, power efficiency of 2.55 lm/W, and CIEs of (0.35, 0.36) at 10 mA/cm2. |
