Single crystals of n-type material were diffused with Au at temperatures of 800 to 1150C. Deep-level transient spectroscopy revealed peaks at Ec - 0.16, Ec - 0.24, Ec - 0.30, and Ec - 0.54eV. As the Au concentration and Au diffusion temperature were increased, the relative height of the Ec - 0.24eV peak increased in comparison with the most prominent peak at Ec - 0.54eV. The concentration of the Ec - 0.30eV peak saturated at between 1014 and 4 x 1014/cm3.

M.Morooka, H.Tomokage, M.Yoshida: Japanese Journal of Applied Physics, 1988, 27[9], 1778-9