Thin film organic electrolumiscent devices based on poly 2,3-diphenyl-1,4-phenylenevinylene (DP-PPV, see Fig.) have been fabricated using the chlorine-precursor route. Devices with the configuration Mg/DP/-PPV/ITO are shown to have an external quantum efficiency for green electroluminescence of 0.1%, a value comparable to the efficiency of CA/PPV devices.
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