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SUMMARY:Electrodeposition with Bitrex - Joshaniel Cooper (TFM)
DTSTART:20111020T133000Z
DTEND:20111020T143000Z
UID:TALK33980@talks.cam.ac.uk
CONTACT:Kimberly Cole
DESCRIPTION:We investigate the effects of denatonium benzoate (Bitrex) on 
 the\nelectrodeposition of copper films from a boric acid bath using scanni
 ng\nelectron microscopy\, cyclic voltammetry\, electrochemical quartz\nmic
 robalance (EQCM) measurements and corrosion studies. In the absence of\nBi
 trex\, pure copper films grown by this method are optically black owing to
 \nthe appearance of complex surface nanostructures. The addition of Bitrex
 \nacts as a levelling agent preventing the formation of these nanostructur
 es\neven for concentrations as low as 0.02mM producing a lustrous film wit
 h low\nsurface roughness. Bitrex is also found to improve the corrosion re
 sistance\nby up to a factor of 20 and increase the current efficiency by o
 ver a\nfactor of two. Bitrex is hypothesised to act directly on the cathod
 e\,\npartially inhibiting the growth or lowering the deposition current.
LOCATION:Mott Seminar Room\, Cavendish Laboratory
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