ChemInform Abstract: Electrodeposition of a Thin Germanium Film on Gold from a Room Temperature Ionic Liquid.
Abstract
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ChemInform Abstract
Thin Ge films are electrodeposited on Au from a room temperature solution of GeI4 in 1-butyl-3-methylimidazolium hexafluorophosphate. The electrodeposition is monitored by cyclic voltammetry and in situ STM. At potentials -2 V from the open circuit potential first a disordered deposit is obtained which obviously transforms on the time scale of about 1 h to a layered structure of Ge bilayers. At -1.5V reoxidation of the deposit starts leading to random wormlike nanostructures on the surface. These nanostructures heal in a complex process on the time scale of 2 h leading back to a layered structure if the electrode potential is set back to more negative values.
