NEW ELECTROCHEMICAL-CELL FOR THE STUDY OF METALLIC SURFACES - CHARACTERIZATION OF SILICON ELECTROLYTE INTERFACE/

Citation
V. Bertagna et al., NEW ELECTROCHEMICAL-CELL FOR THE STUDY OF METALLIC SURFACES - CHARACTERIZATION OF SILICON ELECTROLYTE INTERFACE/, Analusis, 24(9-10), 1996, pp. 383-386
Citations number
15
Categorie Soggetti
Chemistry Analytical
Journal title
ISSN journal
03654877
Volume
24
Issue
9-10
Year of publication
1996
Pages
383 - 386
Database
ISI
SICI code
0365-4877(1996)24:9-10<383:NEFTSO>2.0.ZU;2-5
Abstract
New electrochemical cell for the study of metallic surfaces: character ization of silicon/electrolyte interface. We describe a new and origin al electrochemical cell, coupled with a rigorous experimental process, allowing in situ electrical characterization of the silicon/electroly te interface. This device gives reproducible and reliable electrochemi cal measurements. Indeed, with this electrochemical cell, we have obta ined rest potential measurements and current/intensity curves, which r epresent two complementary parameters to describe electrode/electrolyt e behaviour The experimental method we have developed was quite suitab le to study the influence of light and surface impurities, because the rest potential is extremely sensitive to trace amounts of metallic el ements, at the ppb scale, or to dissolved oxygen in dilute hydrofluori c solutions. The small dimension of this cell, 10 cm(3), makes it very simple to operate, and is suitable to study the electrochemical respo nse of the silicon electrode to the presence of trace amounts of diver se contaminants at the scale of a few ppb.