Miniature tunnel oxide electrodes on silicon for aqueous hot electron electrochemistry and electrochemiluminecscence studies

• The basic principles of cathodic hot electron-induced electrochemiluminescence (HECL) and hot electron (HE) injection into aqueous electrolyte solution are shortly discussed. The applicability of miniaturized oxide-coated silicon electrodes as working electrodes in detection of electrochemiluminescent labels by HECL is studied. In addition, the fabrication processes of these tunnel oxide electrodes are described, and an immunoassay is used as an example of a real bioaffinity assay carried out using oxide-coated silicon electrodes.

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