Aggregation quenching in thin films of MEH-PPV studied by near-field scanning optical microscopy and spectroscopy

被引:29
作者
Huser, T [1 ]
Yan, M [1 ]
机构
[1] Univ Calif Lawrence Livermore Natl Lab, Dept Chem & Mat Sci, Livermore, CA 94551 USA
关键词
NSOM; photoluminescence; MEH-PPV; conjugated polymers; aggregates;
D O I
10.1016/S0379-6779(00)00432-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Aggregates in thin films of conjugated polymers form excimer states and significantly reduce the photo- and electroluminescence efficiency in devices produced from these materials. We have studied the aggregate formation in thin films of poly(2-methoxy,5-(2'-ethylhexyloxy)-p-phenylene-vinylene) (MEH-PPV) by near-field scanning optical microscopy and spectroscopy. Local photoluminescence spectroscopy and photo-bleaching experiments have been used to show that thin films of MEH-PPV are homogeneously aggregated and do not form aggregated domains. Published by Elsevier Science B.V.
引用
收藏
页码:333 / 337
页数:5
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