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  • Charge Carrier Mobility in ...
    Juška, G.; Arlauskas, K.; Österbacka, R.; Sandberg, H.; Stubb, H.

    Synthetic metals, 05/1999, Volume: 101, Issue: 1-3
    Journal Article, Conference Proceeding

    The tendency to saturation in the collected charge as a function of light intensity in Langmuir-Blodgett films of poly(3-hexylthiophene) (PHT) has been studied. The tendency to saturation can have two reasons; that the space charge limited current regime has been reached, or influence of very fast bimolecular recombination. We have studied these two cases, and we conclude that bimolecular recombination is a probable cause for the tendency to saturation. The hole mobility in PHT can therefore possibly be estimated as high as 1 cm2/Vs in the initial stage after photoexcitation.