Article

A galvanostatic study of the electrodeposition of polypyrrole into porous silicon

Departamento de Fı́sica Aplicada C-12, Universidad Autónoma de Madrid, 28049 Madrid, Spain; Departamento de Quı́mica C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain; Instituto de Ciencia de Materiales de Madrid (CSIC), 28049 Madrid, Spain
Thin Solid Films DOI:10.1016/S0040-6090(99)00056-5 pp.152-156

ABSTRACT Polypyrrole has been electrodeposited in the interior of the pores that form the porous silicon structure, and a very significant increase of the electrical conductivity of the samples has been observed. Micro-Raman spectroscopy experiments have allowed us to measure the amount of polymer as a function of the distance from the outer porous silicon surface. The degree of filling by the polymer has been found to be highly dependent on the electropolymerization conditions, particularly the current density applied.

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Keywords

electrical conductivity
 
electropolymerization conditions
 
pores
 
porous silicon structure
 
samples