The doping of PcAlF polymer thin films by iodine implantation at 100-200 keV is reported. Depth profiles obtained by Rutherford back-scattering show that the iodine is quite mobile during implantation, stable at room temperatures, but driven out by a 300 degrees C anneal. Doses of 10 16 atoms cm -2 result in a slightly reduced DC conductivity showing that the material is not graphitised under the ion beam. This is confirmed by optical absorbance spectroscopy of the iodine implanted films which shows a Q-splitting at 630 nm similar to that observed by chemical doping.
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Dann et al. (1986) studied this question.
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