Abstract
Cadmium chalcogenide thin films were deposited by different processes. Pulsed laser deposition, thermal evaporation, and sputtering were used to elaborate micro devices on glass substrate from CdS-AgI-Ag2S-As2S3, CdS-Ag2S-Sb2S3 and Cd-Ag-As2S3 starting materials respectively. The micro films were characterised using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and electrochemistry. Comparative structural characterisation leads us to understand sensors out-put signal. The best miniaturised sensor was selected. The very first electrochemical results are presented. The potentiometric response of Cd-Ag-As2S3 sensing matrix showed a quasi-Nernstian behaviour with a great detection limit. Moreover Cd-ISE is sensitive to silver (+I) in solution.
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