Photoconductivity of multicomponent films of poly-N-epoxypropylcarbazole/fullerene (C60/C70) condensate

摘要

Photogeneration of charge carriers is studied in poly-N- epoxypropylcarbazole (PEPC) doped by C$-60$//C$-70$/ fullerene condensate (30/70 mol.%). Efficiency $phi of the charge carrier photogeneration was determined using the electrophotography technique with tritium ionizer. That efficiency is shown to increase monotonously with the fullerene concentration growth. A characteristic feature of the spectral dependence $phi (lambda) is an increase of $phi in the absorption region of the fullerene-sensitized PEPC. The initial efficiency of the charge carrier photogeneration $phi$-0$/ and thermalization radius r$-0$/ are determined.