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- W3169948844 abstract "The development of gallium nitride (GaN) power devices requires a reliable selective-area doping process, which is difficult to achieve because of ongoing challenges associated with the required etch-then-regrow process. The presence of silicon (Si) impurities of unclear physical origin at the GaN regrowth interface has proven to be a major bottleneck. This paper investigates the origin of Si contamination at the epitaxial GaN-on-GaN interface and demonstrates an approach that markedly reduces its impact on device performance. An optimized dry-etching approach combined with UV-ozone and chemical etching is shown to greatly reduce the Si concentration levels at the regrowth interface, and a significant improvement in a reverse leakage current in vertical GaN-based p–n diodes is achieved." @default.
- W3169948844 created "2021-06-22" @default.
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- W3169948844 date "2021-05-31" @default.
- W3169948844 modified "2023-10-14" @default.
- W3169948844 title "The impact of interfacial Si contamination on GaN-on-GaN regrowth for high power vertical devices" @default.
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- W3169948844 doi "https://doi.org/10.1063/5.0049473" @default.
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