作者: S. Amdouni , M. Rahmani , M.-A Zaïbi , M. Oueslati
DOI: 10.1016/J.JLUMIN.2014.08.041
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摘要: Abstract Nickel-porous silicon nanocomposites (PS/Ni) are elaborated by an electroless deposition method using NiCl2 aqueous solution. The presence of nickel ions in the porous layer is confirmed Fourier Transformed InfraRed spectroscopy (FTIR) and Raman spectroscopy. photoluminescence (PL) spectra PS/Ni, prepared at different durations (tedp), analyzed. A remarkable enhancement integrated PL intensity PS containing was observed. lower tedp favor PS, hence dangling bonds surface quenched this increased intensity. However, for longer tedp, has been considerably decreased due to destruction some Si nanocrystallites. less than 8 min, show a multiband profile indicating creation new luminescent centers Ni elements which induces strong modification emission mechanisms.