A multi-contact six-terminal cross-bridge Kelvin resistor (CBKR) structure for evaluation of interface uniformity of the Ti-Al alloy/p-type 4H-SiC contact
Yen-Ling Chen, Shih-Hao Lai, Jian-Hao Lin, B. Tsui
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引用次数: 1
Abstract
A multi-contact six-terminal cross-bridge Kelvin resistor (CBKR) structure is proposed to characterize the Ti-Al alloy/p-type 4H-SiC contact. It is confirmed that the test structure can judge the uniformity of the contact interface without destructive analysis such as cross-sectional transmission electron microscopy. Comparing with the results of singlecontact CBKR structure, it is observed that the contact interface is non-uniform and the formation of low resistivity interface depends on the contact area. This area-dependence issue should be solved in order to improve the SiC power devices and CMOS ICs.
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