采用CBP主体材料中掺杂rubrene,制备了结构为ITO/2T-NATA(25 nm)/NPBX(20 nm)/CBP: 1%rubrene(10 nm)/NPBX(5 nm)/DPVBi(30 nm)/TPBi(20 nm)/Alq(10 nm)/LiF(1 nm)/Al的白光器件,此结构将器件的发光区控制在了DPVBi层和rubrene掺杂层.利用rubrene染料本身的载流子俘获空穴特性与CBP母体转移来的能量发射荧光特性,以及插入的5 nm NPBX的电子阻挡特性获得了高亮度的白光器件.此器件在驱动电压为16 V时最大亮度达到25 110 cd/m2,对应的色坐标为(0.30,0.34),在驱动电压为10 V时最大电流效率为5.32 cd/A,外量子效率为1.65%.而且,驱动电压在10～16 V时,即达到最大亮度和最大效率时,其色坐标都在白光等能点(0.33,0.33)附近.
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