Test Structures for Characterising the Fabrication of Miniature Reference Electrodes

Autor: Camelia Dunare, Shan Zhang, Jamie R. K. Marland, Andreas Tsiamis, Paul Sullivan, Ian Underwood, Jonathan G. Terry, Anthony J. Walton, Stewart Smith
Rok vydání: 2022
Zdroj: Dunare, C, Zhang, S, Marland, J, Tsiamis, A, Sullivan, P, Underwood, I, Terry, J G, Walton, A J & Smith, S 2022, Test Structures for Characterising the Fabrication of Miniature Reference Electrodes . in 2022 IEEE 34th International Conference on Microelectronic Test Structures (ICMTS) . pp. 9-14, 34th IEEE International Conference on Microelectronic Test Structures, 21/03/22 . https://doi.org/10.1109/ICMTS50340.2022.9898104
Popis: Robust and reliable micro-scale integrated electro- chemical sensors need a reference electrode that can provide a stable electrochemical potential. This can be achieved using a silver/silver chloride (Ag/AgCl) electrode, produced by the chemical chlorination of a thin patterned silver layer. Well understood and controlled processes are required to produce the Ag/AgCl electrode. This paper shows how previously reported test structures have been used to characterise and inform the fabrica- tion procedure. Wafer mapping of these structures was carried out using a Python controlled measurement system, consisting of a semi-automatic prober connected to an HP4062UX based analyser. The measurements were analysed to determine whether the chlorination process was affected by the test structure geometry. This was found to have no clear effect on chlorination.
Databáze: OpenAIRE