Spectroscopic characterization of the conversion of poly(p‐phenylene‐vinylene) precursor by ion irradiation

摘要

AbstractDifferent spectroscopic techniques show that poly(p‐phenylene vinylene) films can be derived from a sulphonium precursor by irradiation with ion beams at energies of the order of 100 keV. The comparison with the pyrolysis conversion shows less chlorine and sulfur residues in the irradiated thickness, whereas some ketone structures are evidenced. The formation of nanometric scale carbon clusters induced by the irradiation degradation of PPV is however indicated by UV spectrophotometry, leading to bandgap narrowing and increase of the conductivity. The irradiation with doping species allows the conversion and doping of PPV films in a single stage. The induced conductivity is limited by the formation of complexes with chlorine residues through a gettering proces