%0 Journal Article
%T Performance improvement of polymer light-emitting diodes based on fluorene copolymer with cesium fluoride/aluminum cathode<br>CsF/Al阴极对提高芴基饱和红光器件性能的研究
%A Tian Ren-Yu
%A Yang Ren-Qiang
%A Peng Jun-Biao
%A Cao Yong
%A <br>田仁玉
%A 阳仁强
%A 彭俊彪
%A 曹 镛
%J 物理学报
%D 2007
%I 
%X Polymer light-emitting diodes with saturated red emission were fabricated using the copolymer,poly 2,7-(9,9-dioctyl)fluorene-co-5,5'-(4,7-diselenophenyl)-2,2'-yl-2,1,3-benzothiadiazole](PFO-SeBT).Special attention was paid to polymer/electrode interface modification.The highest electroluminescence external quantum efficiency of 1.79%,which was more than twice that of devices with low work function metal cathode Ba/Al,was achieved by incorporation of CsF/Al cathode with carefully optimized thickness of CsF,and insertion of PVK layer in the PFO-SeBT1/anode interface.Efficient improvement of electron injection of CsF/Al cathode and blocking effect of PVK to electrons were proposed to be responsible for the improved performances of the device.
%K polymer light-emitting diodes
%K polymer/electrode interface
%K CsF/Al cathode
%K electron injection<br>聚合物发光二极管
%K 聚合物/电极界面
%K CsF/Al阴极
%K 电子注入
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1EBAB16F572E9689&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=E158A972A605785F&sid=78DB415DA3204EAF&eid=1064BCC4A3CF441A&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=28