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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Taccardi, Nicola |
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Petrov, R. H. | Madrid |
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Ali, M. A. |
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Rančić, M. |
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Rusch, Oleg
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article
Low-Resistance Ohmic Contact Formation by Laser Annealing of N-Implanted 4H-SiC
Abstract
<jats:p>In this work, pulsed-laser-based tempering was applied for post-implant annealing of n-type N-doped 4H-SiC in order to electrically activate the dopants and to rebuild the crystal structure. The annealing was performed by a frequency-tripled Nd:YVO<jats:sub>4</jats:sub>laser with a pulse duration of 60 ns. To evaluate the effects of post-implant annealing, JBS diodes were electrically characterized. The results were compared with implanted, not post-annealed JBS diodes. The electrical measurements showed a significant on-state voltage drop of 40 mV at 6 A for post-implant laser annealed diodes compared to not post-implant annealed diodes.</jats:p>