Fabrication of Ohmic Contacts to 4H-SiC Created by Ion-Implantation
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Graphical Abstract
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Abstract
Doping by nitrogen ion-implantation is used to fabricate the Ohmic contacts of 4H-SiC. The implantation depth profile is simulated with the Monte Carlo simulator TRIM. Ni/Cr/Si-face 4H-SiC Ohmic contacts are measured by Transfer Length Method structures. The result for sheet resistance Rsh of the implanted layers is 30 kΩ/square. The specific contact resistances ρc of Ohmic contacts is 7.1×10-4 Ωcm2.
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