Conference Papers Year : 2024

Formation of Highly Doped and Defect-Free P-Type Junctions in SiC by Using High Temperature Implants and UV-Laser Annealing

Louis Thuries
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  • PersonId : 1115627
Fulvio Mazzamuto
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Mathieu Opprecht
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  • PersonId : 1434869
Sébastien Kerdilès
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Mihai Lazar

Abstract

Formation of highly doped and defect-free p-type junctions at reduced cost remains one of the important limitations for the manufacturing of high performance SiC devices. Today process of record presents some limitations in terms of defectivity, maximal implanted doses (~1E15 at/cm²) and cost (carbon cap required during furnace annealing to avoid SiC dissociation). Indeed, if the implanted dose becomes too important (>4E15 at/cm²), basal stacking faults (BSF) are formed during the furnace annealing step. To overcome these limitations, an alternative solution based on high-temperature (>500°C) ion implantation and microsecond ultraviolet laser annealing (later referred as UV-LA) is proposed. This solution presents the advantages to enable implantation and activation of high doses of aluminum (1E16 at/cm²) while remaining defect-free. Moreover, the manufacturing costs with this solution are reduced since there is no need of any carbon cap during the laser annealing step.
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hal-04796873 , version 1 (21-11-2024)

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  • HAL Id : hal-04796873 , version 1

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Louis Thuries, Zeinab Chehadi, Fulvio Mazzamuto, Mathieu Opprecht, Sébastien Kerdilès, et al.. Formation of Highly Doped and Defect-Free P-Type Junctions in SiC by Using High Temperature Implants and UV-Laser Annealing. International Conference on Silicon Carbide and Related Materials (ICSCRM 2024), Sep 2024, Raleigh (North Carolina), United States. pp.712-713. ⟨hal-04796873⟩
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