Self-trapping of charge carriers in polymers: A comparative study of poly(p-phenylene) and poly(N-vinylcarbazole)
The electronic relaxation processes in poly(p-phenylene) (PPP) and poly(N-vinylcarbazole) (PVCA) were studied. The fractional thermostimulated luminescence gave evidence of two different thermoactivated processes in PPP and PVCA, taking place in different temperature regions. Fractional thermostimulated luminescence results have been discussed in terms of self-trapping of charge carriers. In PVCA the self-trapping of charge carriers proceeds via formation of dimer cation radicals.
Key wordsSelf-trapping of electronic excitation fractional thermostimulated luminescence hole drift mobility poly(p-phenylene) poly(N-vinylcarbazole)
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