Performance and stability of electroluminescent device with self-assembled layers of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) and polyelectrolytes

被引:129
作者
Kim, Yun-Ho
Lee, Soo-Hyoung
Noh, Jaegeun
Han, Sung-Hwan [1 ]
机构
[1] Hanyang Univ, Dept Chem, Seoul 133792, South Korea
[2] Korea Inst Sci & Technol, Seoul 136791, South Korea
关键词
electroluminescent devices; polyelectroiytes; Rutherford back scaterring spectroscopy; interfaces;
D O I
10.1016/j.tsf.2005.08.174
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Self-assembled poly(3.4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT) layers were prepared on polyelectrolytes multilayers (polyethylenimine and polyacrylic acid) on an indium-tin oxide (ITO) surface using a layer-by-layer technique. The electroluminescence efficiencies of the devices were drastically enhanced by the addition of self-assembled PEDOT layers between the spin-coated PEDOT and ITO. The ITO corrosion by the acidic PEDOT and the migration of the indium components across the interfacial layers were inhibited in the presence of the polyelectrolyte multilayers. Remarkably, the lifetime of the device was 60% longer than the one without the self-assemblies, which was attributed to the improvement in the interfacial contact. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:305 / 310
页数:6
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