Bimolecular recombination of charge carriers in pure and molecularly doped branched polyphenylenevinylenes

Abstract

General problems of bimolecular recombination of charge carriers in both pure and molecularly doped branched polyphenylenevinylenes are addressed. Experiments are performed via the nonstationary radiation-induced conductivity method. Transient-current curves are numerically calculated in terms of the multiple-trapping model. Good agreement between the calculated and experimental curves is attained. In the investigated polymers, the Langevin mechanism of bimolecular recombination is active.