高效率磷光与荧光相结合的白色有机发光器件  

Efficient white light-emitting device based on phosphorescent emissive layer combining with fluorescent emitter layer

作　　者：杨惠山[1] 

机构地区：[1]泉州师范学院物理系,福建泉州362000

出　　处：《光电子．激光》2009年第4期462-465,共4页Journal of Optoelectronics·Laser

基　　金：福建省科技计划项目资助省属高校项目(2008F5054);泉州市科技局基金资助项目(2007G8)

摘　　要：制作了一种白色有机电致发光器件(WOLED)。将红光[Ir(piq)2(acac)]及绿光[Ir(ppy)3]磷光掺杂染料分别掺入到母体CBP中,在2种磷光发光层间插入蓝光材料DPVBi,引入电子传输能力强的BPhen作为电子注入层和空穴阻挡层,通过改变蓝光发光层的厚度,得到了高效率的WOLED,最大电流效率可达17.6cd/A,最大功率效率达13.7lm/W,最大亮度达27525cd/m2,当电压从4V变化到12V时,色坐标从(0.54,0.35)变化到(0.30,0.31),基本处于白光区。器件的特点在于DPVBi的存在阻挡了2种磷光材料间的能量转移,色度可以通过简单地调整DPVBi的厚度,避免使用稀有的蓝光磷光材料和与其相匹配的母体材料,同时又可以保持较高的发光效率。A multiple emissive layer,in which a blue emissive layer is sandwiched between red and green ones,is employed in a white organic light-emitting device.We obtain the efficient white emission from the mixing of red emission from the bis(1-(phenyl)isoquinoline)iridium(ⅡI)acetylanetonate [Ir(piq)2(acac)],green emission from the fac tris (2-phenylpyridine) iridium [Ir(ppy)3],and blue emission from the NPB or DPVBi,where Ir(piq)2(acac) and Ir(ppy)3 are doped into CBP host,respectively.And we replace phosphorescen...

关 键 词：白色有机电致发光器件(WOLED) 色坐标 效率 

分 类 号：TN383.1[电子电信—物理电子学]