%0 Journal Article
%T High efficient light-emitting diodes using polystyrene as matrix
%A HE Gufeng
%A LIU Jie
%A YANG Yang
%A Li Yongfang
%A <br>HEGufeng
%A LIUJie
%A YANGYang
%A LIYongfang
%J 科学通报(英文版)
%D 2003
%I 
%X High efficient polymer light-emitting diodes (PLEDs) were obtained by using a blend of conjugated polymer G-PF, a copolymer of fluorene and thiophene, and polystyrene (PS). The maximum electroluminescent (EL) efficiency of the device is 12 cd/A when G-PF/PS weight ratio is at 80/20, while that of pure G-PF device is 6.5 cd/A. Studies on photoluminescence and electroluminescence of the blends indicate that inter-chain interactions were tremendously suppressed due to the dilution effect. However, after PS concentration exceeds 20% the EL efficiency of the devices decreases with further increase of PS concentration. This may be due to the decrease of the recombination probability of electrons and holes with the excessive addition of PS insulator.
%K polymer light-emitting diodes
%K quantum efficiency
%K polystyrene
%K photoluminescence
%K electroluminescence
%K DOI: 10
%K 1360/02wb0027<br>高效率聚合体
%K 发光二极管
%K 聚苯乙烯
%K 光致发光
%K 电致发光
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=AFA504FA6EA8B466AED6FDE40A1A761D&yid=D43C4A19B2EE3C0A&vid=B6DA1AC076E37400&iid=9CF7A0430CBB2DFD&sid=970314C3B74F6C4D&eid=466EAEA150F7AE77&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=16