Organic functionalization of the porous silicon surface was a very active field in recent years. Surface passivation is crucial for the technological applications of this material.
In order to improve the stability of PS against oxidation, pentyne and pentene were covalently grafted onto the porous silicon (PS) surface when reacting with Si-H terminated. Transmission Fourier-transform infrared (FTIR), photoluminescence (PL) and scanning electron microscopy (MEB) characterizations have been performed to evaluate the surface modification. Finally, after six months exposure to ambient air, it has been shown that PL and and FT-IR spectra of the functionalized samples did not change which indicates the stability of nanostructures against oxidation.
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