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| Topic: Print Screen
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COLOUR displays that can be made using a simple "printing" process will provide ultra-cheap video screens for the next generation of cellphones and palmtops, say British researchers. <P> A polymer called PPV will emit light when a voltage is applied to them. Because PPV molecules contain benzene rings, which allow electrons to move through the molecule, the polymer can act as a semiconductor--and form the basis of a light-emitting diode. |
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