Flexible Blue Light Emitting Diodes Made from Dye Doped Poly (N-Vinylcarbazole) with Multilayer Structure  

作　　者：CHEN Bai-jun HOU Jing-ying HUANG Jing-song LIU Shi-yong 陈佰军;侯晶莹;黄劲松;刘式墉(State Key Laboratory on Integrated Optoelectronics,Jilin University,Changchun 130023)

机构地区：[1]State Key Laboratory on Integrated Optoelectronics,Jilin University,Changchun 130023

出　　处：《Chinese Physics Letters》1997年第1期74-76,共3页中国物理快报（英文版）

摘　　要：Flexible blue light emitting diodes(LEDs)were fabricated by using poly(N-vinylcarbazole)(PVK)doped with high fluorescence dye,1,1,4,4-tetraphen1-1,3-butadiene(TPB),as a emitter layer,a layer of tris(8-quinolino1ato)aluminum(Ⅲ)(Alq3)as an electron-transporting layer,and a layer of 2-(4-biphenylyl)-5-(4-tertbutypheny)-1-3,4-oxadiazole(PBD)as hole-blocking layer;a cell structure of flexible substrate/indium-tin-oxide/PVK:TPB/PBD/Alq3/Al was employed.In this cell structure,carrier injection from the electrodes to the doped PVK layer and concomitant electroluminescence from doped PVK were observed at room temperature with dcbias voltage of 4V.Blue emission peaks at about 465nm.This kind of LED is about 200μm thick and can be curled or bent repeatedly at sharp angles without failure.

关 键 词：EMITTER LAYER repeatedly 

分 类 号：TN3[电子电信—物理电子学]