Test structures for characterising the silver chlorination process during integrated Ag/AgCl reference electrode fabrication

Dunare, C. and Marland, J.R.K. and Blair, E.O. and Tsiamis, A. and Moore, F. and Terry, J.G. and Walton, A.J. and Smith, S.; (2019) Test structures for characterising the silver chlorination process during integrated Ag/AgCl reference electrode fabrication. In: 2019 IEEE 32nd International Conference on Microelectronic Test Structures, ICMTS 2019. IEEE, JPN, pp. 58-63. ISBN 9781728114668 (https://doi.org/10.1109/ICMTS.2019.8730966)

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Abstract

Robust and repeatable processes are required to fabricate reference electrodes for micro-scale integrated electrochemical sensors. One method for this is to produce a “silver/silver chloride” (Ag/Agel) electrode through chemical chlorination of a thin film silver layer. This paper presents test structures, which can electrically characterise the process to aid process development and in-line control of the chlorination process.

ORCID iDs

Dunare, C., Marland, J.R.K., Blair, E.O. ORCID logoORCID: https://orcid.org/0000-0002-1887-8001, Tsiamis, A., Moore, F., Terry, J.G., Walton, A.J. and Smith, S.;