Diffusion in amorphous hydrogenated material, as studied by using implantation and secondary ion mass spectroscopic techniques, was found to be trap-limited. No time or concentration dependence of Li diffusion was observed. It was suggested that Li diffused largely in a positive charge state and was trapped mainly by extrinsic doping-related negatively charged ions or O.

W.Beyer, U.Zastrow: Journal of Non-Crystalline Solids, 1993, 164-166[1], 289-92