E. Mulazzi

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We present new results of temperature dependence of photoluminescence spectra carried out on poly-p-phenylene vinylene (PPV) and on PPV composite films with single-walled carbon nanotubes. By performing studies at different temperatures (87 and 300 K), we show that a distribution of conjugated PPV segments is needed to interpret experimental data. At the(More)
We present in this paper a comprehensive study of the migration dynamics of the charges underlying transient photoluminescence (PL) processes in poly(para-phenylene vinylene) (PPV) samples from room temperature to 13 K. In order to interpret experimental data, we have modelled the long-time PL decays (from 100 to 1000 ps) using a time function proportional(More)
The Huang-Rhys factor S, the half-width H(T) and the peak position E of the F band are evaluated in terms of the forces that the l s -t 2 p electronic transition induces in the surrounding lattice, and of the phonon projected density of states of the perturbed lattice. The symmetry coordinates of the F-center are explicitly considered ; only T:, T$, T'& are(More)
We report in this paper experimental data on steady state and transient photoluminescence of poly-p-phenylene vinylene in the form of nanofibers prepared with a template method and converted at 110 degrees C. Results are compared to those obtained from films of different thicknesses converted at the same temperature. Data are analyzed by a model of bimodal(More)
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