Specific contact resistance extraction from four-point-probe measurements on multilayered film structures

Autor: Quat T. Vu, L. E. Halperin, M.-A. Nicolet, Elzbieta Kolawa
Rok vydání: 1991
Předmět:
Zdroj: Solid-State Electronics. 34:279-283
ISSN: 0038-1101
DOI: 10.1016/0038-1101(91)90185-2
Popis: A transmission-line type model is developed for the four-point-probe measurement of multilayered structures. It is shown that the specific contact resistance between two layers can be extracted from this type of measurement without incurring the problem of non-ideal contact-pad geometries usually encountered in contact resistance problems. This method can be visualized as a probing of the potential distribution on an infinite contact pad. Experimental verification of the model is conducted on as-deposited SiO2/Al/RuO2/Al structures. Excellent agreement is found between theory and experiment. A value of 6 × 10−5 Ωcm2 to within a factor of two is obtained for the as-deposited specific contact resistance between Al and RuO2.
Databáze: OpenAIRE