Improved electroluminescence efficiencies in polymer light-emitting diodes (LEDs) can be achieved either by constructing multilayer devices or by using polymer blends in a single-layer configuration. The photo- and electroluminescence of polymer blends composed of soluble poly(p-terphenyldiyl vinylene) as luminescent polymer and poly(phenylbiphenylylsilylene) as hole-transport polymer are investigated. A significant improvement in the electroluminescence efficiency of devices based on the blend compared to those fabricated from the luminescent polymer alone are reported.
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Cimrová et al. (1998) studied this question.
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