Thin films of endohedral fullerenes,conductivity and air sensitivity of Li@C_(60) and La@C_(82)

摘要

We present promising results from deposition of and electric measurements on thin layers of the endohedral fullerenes Li@C60 and La@C82.The endohedral fullerenes were inserted into quartz crucibles which could be heated to 450-550degC.The deposition was carried out in ultra high vacuum onto specially designed substrates consisting of SiO_2 with gold connectors on the surface.The connectors were arranged with a spacing of 100 micrometers and the measurements were carried out on fullerene material deposited between the connectors.The deposition of the endohedral fullerenes could be carried out for similar conditions as for C_(60),but at slightly higher temperatures,probably due to the stronger inter-molecular bonding in the material.