Performance and reliability improvement in SiC power MOSFETs by implementing AlON high-k gate dielectrics

T. Hosoi, Shuji Azumo, Yusaku Kashiwagi, S. Hosaka, R. Nakamura, Shuhei Mitani, Y. Nakano, H. Asahara, Takashi Nakamura, Tsunenobu Kimoto, T. Shimura, Heiji Watanabe
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引用次数: 25

Abstract

We have developed AlON high-k gate dielectric technology that can be easily implemented into both planar and trench SiC-based MOSFETs. On the basis of electrical characterization and numerical simulation, the thickness ratio of the AlON layer to the SiO2 interlayer and nitrogen content in AlON film were carefully optimized to enhance device performance and reliability.
采用AlON高k栅极电介质提高SiC功率mosfet的性能和可靠性
我们开发了AlON高k栅极介电技术,可以很容易地实现在平面和沟槽sic基mosfet中。在电学表征和数值模拟的基础上,精心优化了AlON层与SiO2间层的厚度比和AlON膜中的氮含量,以提高器件的性能和可靠性。
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