Journal
SYNTHETIC METALS
Volume 155, Issue 2, Pages 242-245Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2005.01.042
Keywords
photoconductivity; amorphous thin films; semiconducting films; polythiophene and derivatives; solar cells
Ask authors/readers for more resources
We have studied transport and recombination of photogenerated charge carriers in thin films of regiorandom poly(3-hexylthiophene) (RRaPHT). Time-of-Flight studies show space charge perturbed current transients with a saturation of current level at high light intensities as a result of diffusion controlled Langevin-type bimolecular charge carrier recombination. We have been able to measure the time-dependent charge carrier mobility by using the carrier extraction by linearly increasing voltage technique. We found that the hole mobility follows a power law dependence over a few orders of magnitude in time as mu=mu(0)t(-0.42). By using the carrier extraction by pulsed voltage technique we measured the photogenerated charge carrier concentration decay as a function of delay time and found that the decay can be fitted using a dispersive time-dependent bimolecular recombination coefficient governed by the time-dependent hole mobility. (C) 2005 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available