单异质结蓝色有机电致发光器件  

Single Heterojunction Blue Organic Electroluminescent Devices

作　　者：吴有智[1] 郑新友[1] 朱文清[1] 孙润光[1] 蒋雪茵[1] 张志林[1] 许少鸿[1] 

机构地区：[1]上海大学电子信息材料系

出　　处：《半导体光电》2004年第1期22-24,共3页Semiconductor Optoelectronics

基　　金：国家自然科学基金重大研究计划项目(90 2 0 1 0 3 4);国家自然科学基金资助项目 (60 0 770 2 0 ;50 2 43 0 2 0 );上海市光科技资助项目 (0 1 2 2 61 0 55)

摘　　要：　为了增加电子注入,蓝色有机电致发光器件中通常包含一层由发绿光的Alq组成的电子传输层,因此器件的发光常常不可避免地要出现Alq本身的发光从而影响器件的发光色纯度。在以胺类衍生物(N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'biphenyl-4,4'diamine,TPD)为空穴传输层,DSA衍生物(4,4'-bis(2,2-diphenylvinyl)-1,1'-biphenyl,DPVBi)为发光层,当用Liq为电子注入层与Al结合构成复合电极时所制备的双层单异质结蓝色有机电致发光器件中由于去除了Alq而得到色度纯正的DPVBi的发光,同时又保持了较高的发光效率。A blue organic electroluminescent device usually consists of an electron-transporting layer like green emissive Alq, from which green emission is inevitable and affects the color purity of the device. Blue emission with good color purity and high efficiency is obtained from a double layer single heterojunction organic electroluminescent device using N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'biphenyl-4,4'diamine (TPD) as a hole transporting layer, and 4,4'-bis(2,2-diphenylvinyl)-1,1'-biphenyl, (DPVBi) as an emissive layer, 8-hydroxy-quinolinato lithium (Liq) as an electron injection layer, due to the elimination of Alq electron transporting layer.

关 键 词：有机电致发光 蓝色 色纯度 联苯乙烯衍生物DPVBi 

分 类 号：TN873.3[电子电信—信息与通信工程]