Deep levels introduced during electron-beam deposition of metals on n-type silicon

Abstract
Near‐surface damage introduced during fabrication of Schottky barrier diodes (SBDs) by electron‐beam (E‐beam) deposition of various metals on n‐type silicon has been investigated using deep level transient spectroscopy. The main defect was observed at Ec −0.42 eV and is annealed out at 400 °C. The interaction of E‐beam deposition induced defects with defects which had been introduced in the substrate by irradiation with high‐energy electrons was also observed in Pd and Pd/Au SBDs. Therefore erroneous conclusions can be made when using SBDs fabricated by E‐beam deposition to characterize defects introduced by some other process near the interface of a SBD.