Piezoresistive 4H-Silicon Carbide (SiC) pressure sensor

被引:10
作者
Mackowiak, Piotr [1 ]
Erbacher, Kolja [1 ]
Baeuscher, Manuel [1 ]
Schiffer, Michael [1 ]
Lang, Klaus-Dieter [2 ]
Schneider-Ramelow, Martin [2 ]
Ha-Duong Ngo [3 ]
机构
[1] Fraunhofer IZM, Berlin, Germany
[2] Tech Univ Berlin, Berlin, Germany
[3] Univ Appl Sci, Berlin, Germany
来源
2021 IEEE SENSORS | 2021年
关键词
Piezoresistive; 4H Silicon Carbide; SiC; Pressure Sensor; High Temperature;
D O I
10.1109/SENSORS47087.2021.9639506
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A novel 4H SiC piezoresistive pressure sensor has been fabricated using a high temperature metallization system. The sensor has been fabricated using 100 mm 4H-SiC Wafers with an double EPI layer. While the top has been etched to form the piezoresistors, the lower Epi-layer is oppositely doped acts as an isolation layer. The formation of the membrane has been performed by a reactive ion etching (RIE) process enabling etch rates of up to 4 mu m/min through bulk SiC. The gold-based metallization system is able to withstand high temperatures.
引用
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页数:4
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