Si ohmic contacts on N-type SiC

Widespread Ni/SiC contact after annealing at high temperatures provides good ohmic contact. We managed to prepare Si/SiC annealed ohmic contacts with comparable qualities as Ni/SiC ones. However, the main benefit of these Si/SiC ohmic contacts lies in that they retain their ohmic properties even after they are etched off which brings grounds for promising secondary contacts. Etched contacts were analyzed by XPS and surface composition alteration was observed.