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利用磷光敏化和BCP的空穴阻挡作用,制备了结构为:ITO/2T-NATA(15nm)/NPBX(20nm)/rubrene(0.2nm)/NPBX(5nm)/CBP∶6%Ir(ppy)3∶15%ADN(30nm)/BCP(10nm)/Alq3(25nm)/LiF(0.5nm)/Al的有机白光器件。器件在电压为7V的情况下,最大发光效率达到5.80cd/A,在12V的电压下最大亮度达12395cd/m2,色坐标为(0.30,0.30),接近白光等能点(0.33,0.33),比非敏化器件最大发光效率3.10cd/A(7V)和最大亮度10390cd/m2(12V)及非敏化不加空穴阻挡层BCP的器件最大发光效率2.13cd/A(8V)和最大亮度8852cd/m2(12V)的性能提高很多。
The structure of ITO / 2T-NATA (15nm) / NPBX (20nm) / rubrene (0.2nm) / NPBX (5nm) / CBP:6% Ir (ppy) was prepared by phosphorescence sensitization and hole blocking of BCP. 3:15% ADN (30 nm) / BCP (10 nm) / Alq3 (25 nm) / LiF (0.5 nm) / Al. Under the voltage of 7V, the maximum luminous efficiency reached 5.80cd / A, the maximum brightness reached 12395cd / m2 at 12V voltage, the color coordinates were (0.30,0.30) Compared with the maximum luminous efficiency of non-sensitized devices 3.10cd / A (7V) and the maximum brightness of 10390cd / m2 (12V) and non-sensitized devices without hole blocking layer BCP maximum luminous efficiency of 2.13cd / A (8V) and maximum brightness 8852cd / m2 (12V) performance improved a lot.