Development of low resistance Al/Ti stacked metal contacts to p-type 4H-SiC
Jennings, M. R., Pérez-Tomás, Amador, Walker, D., Zhu, L., Losee, P., Huang, W., Balachandran, S., Guy, O. J., Covington, James A., 1973-, Chow, T. P. and Mawby, P. A. (Philip A.) (2007) Development of low resistance Al/Ti stacked metal contacts to p-type 4H-SiC. In: 6th European Conference on Silicon Carbide and Related Materials, Newcastle upon Tyne, ENGLAND, SEP, 2006. Published in: Silicon Carbide and Related Materials 2006, 556-557 pp. 697-700.Full text not available from this repository.
In this work, we have investigated triple and innovative multiple stacked contacts onto p-type SiC in order to evaluate whether or not there is any improvement in morphology or specific contact resistivity. The stacked metal contacts are based on Al, Ti and Ni with the specific contact resistivity measured at a low value of 5.02x10(-6)Omega cm(2) for an Al(100 nm)/Ti(100 nm)/Al(10 nm) (where a "/" indicates the deposition sequence) triple stacked metal contact. XRD microstructural analysis and SEM measurements have been carried out and it has been discovered that the contacts, which formed the compound Ti3SiC2 at the metal/SiC interface, more readily display low-resistance ohmic characteristics after a post deposition anneal. Although the same amount of Ti (100 nm in total) has been deposited closer to the metal/SiC interface, none of the multiple stacked structures displayed ohmic behaviour after a post deposition anneal.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Series Name:||MATERIALS SCIENCE FORUM|
|Journal or Publication Title:||Silicon Carbide and Related Materials 2006|
|Publisher:||TRANS TECH PUBLICATIONS LTD|
|Editor:||Wright, N and Johnson, CM and Vassilevski, K and Nikitina, I and Horsfall, A|
|Number of Pages:||4|
|Page Range:||pp. 697-700|
|Title of Event:||6th European Conference on Silicon Carbide and Related Materials|
|Location of Event:||Newcastle upon Tyne, ENGLAND|
|Date(s) of Event:||SEP, 2006|
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