Radiation effects on iodine-doping of pyrolytic graphite films

Abstract

In order to prepare graphite intercalation compounds of iodine (I₂-GICs), highly-oriented pyrolytic graphite films were irradiated with γ-rays in an iodine-air atmosphere. The depth profile of iodine distribution was examined by means of secondary ion mass spectrometry and X-ray photoelectron spectrometry. The iodine-doping was found to be brought about, though partially, under the influence of γ-rays. The prominent effect of γ-irradiation was the formation of IO₃ on the surface of the graphite films.