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HIGH RESISTANCE POLY(3,4- ETHYLENEDIOXYTHIOPHENE)/POLY(STYRENE SULFONATE) FOR USE IN HIGH EFFICIENCY PIXELLATED ELECTROLUMINESCENT DEVICES
HIGH RESISTANCE POLY(3,4- ETHYLENEDIOXYTHIOPHENE)/POLY(STYRENE SULFONATE) FOR USE IN HIGH EFFICIENCY PIXELLATED ELECTROLUMINESCENT DEVICES
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机译:高效率的聚乙烯醇(3,4-乙二氧基二氧噻吩)/聚苯乙烯磺酸盐(POLY)
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摘要
High resistance PEDT/PSS buffer layers are provided for use in electroluminescent devices such as, e.g., OLEDs. In accordance with another embodiment, there are provided OLEDs comprising high resistance PEDT/PSS buffer layers. In accordance with a further embodiment, methods have been developed for decreasing the conductivity of a PEDT/PSS layer cast from aqueous solution onto a substrate, by adding a cyclic ether co-solvent to the aqueous solution of PEDT/PSS prior to casting. In one embodiment, there are provided methods for decreasing the inherent conductivity of a PEDT/PSS layer cast onto a substrate so that this material can be used as an intermediate buffer layer in red, green, blue organic light emitting diodes (RGB OLEDs).
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