Abstract
Organic light-emitting diodes (OLEDs) were fabricated using polymer;Poly(N-vinylcarbazole);(PVK) films, electron transport material;2-(4-Biphenylyl)-5-(4-tert-butyl-phenyl)-1,3,4-oxadiazole ;(PBD) as the host material and Nile Red as the dopant emission material. Organic layers were prepared by spin-coating the solution of CHCl3 on the indium-tin-oxide(ITO) coated glasses. The effects of inserting poly(styrenesulfonate)/poly(2,3-dihydrothieno(3,4-b)-1,4dioxin) (PEDOT-PSS) layer between ITO and organic layer on the characteristics of OLEDs with Nile Red were investigated. EL spectra have two main peaks at near 430 nm and 590 nm. By inserting PEDOT-PSS layer, the emission of the peak at 430 nm increased and that of the peak at 590 nm decreased. [DOI: 10.1380/ejssnt.2005.341]
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