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Abstract
Polyparaphenylene (PPP) samples were implanted with alkali metal ions using different energies. They were characterized and the evolution of thermo electric power versus temperature was followed. The results may be analyzed in terms of a variable range hopping process between localized states induced near the Fermi level through implantation. Furthermore with samples implanted at low energy, a transition toward values characteristic of the expected doping shows up (n type doping with alkali metals).
