Estudo da morfologia do silicio poroso luminescente com nucleação diamantifera

AUTOR(ES)

Dahge Chiadin Chang

DATA DE PUBLICAÇÃO

1999

RESUMO

A study of the properties of anodically etched porous silicon was made prior to and following its coating with diamond. Mixtures of HF/H2O and of HF/C2H5OH/H2O were used as electrolytes in different proportions, for different corrosion times and with current densities in the range of 10 mA.cm-2 to 30 mA.cm-2. The porous silicon morphology was analyzed in-situ (liquid-phase) by atomic force microscopy to study of the variation of the porosity with the anodization parameters. The porous silicon films were covered with diamond deposited at different temperatures and times. It was observed that the porous silicon/diamond structure presents room temperature photoluminescence but it was not possible to determine whether the gausssian shape of the luminescence spectra was due to the porous silicon or to the diamond coating

ASSUNTO(S)

diodos de silicio diamante artificial cristais de silicio - propriedades eletricas microscopio e microscopia fotoluminescencia

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