Triplet-polaron quenching in conjugated polymers.

  title={Triplet-polaron quenching in conjugated polymers.},
  author={Dirk Hertel and Klaus Meerholz},
  journal={The journal of physical chemistry. B},
  volume={111 42},
We studied the triplet-polaron quenching in a platinum(II) porphyrin- (PtOEP-) doped polyspirobifluorene (PSF-TAD) copolymer. The copolymer contains a hole-transporting phenylenediamine unit (TAD) as a comonomer. Triplet-polaron quenching was probed by the change in PtOEP phosphorescence lifetime under an applied voltage in a unipolar device. The charge-induced reduction of the optically excited lifetime of PtOEP is one-third for the highest applied bias. The charge density can be obtained from… CONTINUE READING