%0 Journal Article
%T Enhanced Electroluminescent Efficiency Based on Functionalized Europium Complexes in Polymer Light-Emitting Diodes
%A ZHANG Yong
%A WANG Lei
%A LI Chun
%A ZENG Wen-Jin
%A SHI Hua-Hong
%A CAO Yong
%A <br>张勇
%A 王磊
%A 李春
%A 曾文进
%A 史华红
%A 曹镛
%J 中国物理快报
%D 2007
%I 
%X Efficient red polymer light-emitting diodes are fabricated with the single active layer from the blends of poly(N-vinylcarbazole) (PVK) in the presence of 30wt.% electron-transporting compound 2-(4-biphenylyl)-5-(p-tert-butylphenyl)-1,3,4-oxadiazole (PBD) and europium complexes. The polyphenylene functionalized europium complex shows an enhanced electroluminescent efficiency due to the large site-isolation effect. For the polyphenylene functionalized europium complex, the maximum external quantum efficiency of 1.90% and luminous efficiency of 2.01cd A-1 are achieved with emission peak at 612nm. The maximum brightness is more than 300cd m-2.
%K 78
%K 60
%K Fi
%K 78
%K 66
%K Qn<br>铕络合物
%K 场致发光
%K 聚合物
%K 电子传输
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=03664AC44D480818FD86F37DD6A1211F&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=94C357A881DFC066&sid=FFFB69BAAED96604&eid=F2D4C4F6570F167A&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0