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1. (WO2004029176) ELECTRICALLY CONDUCTING ORGANIC POLYMER/NANOPARTICLE COMPOSITES AND METHODS FOR USE THEREOF

Pub. No.:    WO/2004/029176    International Application No.:    PCT/US2003/030509
Publication Date: Fri Apr 09 01:59:59 CEST 2004 International Filing Date: Thu Sep 25 01:59:59 CEST 2003
IPC: H01B 1/12
H01L 51/30
H01L 51/40
H01L 51/50
Applicants: E.I. DU PONT DE NEMOURS AND COMPANY
Inventors: HSU, Che-hsiung
Title: ELECTRICALLY CONDUCTING ORGANIC POLYMER/NANOPARTICLE COMPOSITES AND METHODS FOR USE THEREOF
Abstract:
Compositions are provided comprising aqueous dispersions of electrically conducting organic polymers and a plurality of nanoparticles. Films cast from invention compositions are useful as buffer layers in electroluminescent devices, such as organic light emitting diodes (OLEDs) and electrodes for thin film field effect transistors. Buffer layers containing nanoparticles have a much lower conductivity than buffer layers without nanoparticles. In addition, when incorporated into an electroluminescent (EL) device, buffer layers according to the invention contribute to higher stress life of the EL device.