Published online by Cambridge University Press: 26 February 2011
This paper investigates the creation rate of carrier-induced defects in hydrogenated amorphous silicon (a-Si:H) metal-insulator-semiconductor (MIS) devices. The results demonstrate that holes increase the rate of defect formation by over 3 orders of magnitude while electrons increase the rate by roughly an order of magnitude. The carrier-induced defect kinetics, light-induced defect annealing, and decay of excess carriers in doped a-Si:H are quantitatively consistent with dispersive diffusion of hydrogen involved in the metastable process. The results provide strong evidence for the involvement of hydrogen in metastable effects in a-Si:H.