Highly Efficient White Organic Light Emitting Diodes Using New Blue Fluorescence Emitter

摘要

Two different emitting compounds, 1-[1,1';3',1 '']Terphenyl-5'-yl-6-(10-[1,1';3',1 '']terphenyl-5'-yl-anthracen-9-yl)-pyrene (TP-AP-TP) and Poly-phenylene vinylene derivative (PDY 132) were used to white OLED device. By incorporating adjacent blue and yellow emitting layers in a multi-layered structure, highly efficient white emission has been attained. The device was fabricated with a hybrid configuration structure: ITO/PEDOT (40 nm)/PDY-132 (8 similar to 50 nnn)/ NPB (10 nm)/TP-AP-TP (30 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nnn). After fixing TP-AP-TP thickness of 30 nnn by evaporation, PDY-132 thickness varied with 8, 15, 35, and 50 nnn by spin coating in device. The luminance efficiency of the white devices at 10 mA/cm(2) were 2.93 cd/A similar to 6.55 cd/A. One of white devices showed 6.55 cd/A and white color of (0.290, 0.331).