期刊
JOURNAL OF LUMINESCENCE
卷 126, 期 2, 页码 602-606出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2006.10.006
关键词
carbon nanotubes; doping; scanning electron microscopy; luminescence
类别
Poly(3,4-ethylene.dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) was modified by different concentrations of multi-wall carbon nanotubes (MWNTs), and the nanocomposites of PEDOT:PSS and MWNTs were firstly used as hole-injection layer in fabrication of organic light-emitting devices (OLEDs) by using a double-layer structure with hole-injection layer of doped PEDOT:PSS and emitting/electron transport layer of tris(8-hydroxyquinolinato) aluminum (Alq(3)). PEDOT:PSS solution doped with MWNTs was spin-coated on clean polyethylene terephthalate (PET) substrate with indium tin oxide (ITO). It was found that the electroluminescence (EL) intensity of the OLEDs were greatly improved by using PEDOT:PSS doped with MWNTs as hole-injection layer which might have resulted from the hole-injection ability improvement of the nanocomposites. Higher luminescence intensity and lower turn-on voltage were obtained by these devices and the luminance intensity obtained from the device with the hole-injection layer of PEDOT:PSS doped by 0.4wt.% MWNTs was almost threefolds of that without doping. (c) 2006 Elsevier B.V. All rights reserved.
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