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We synthesized ultrathin Si nanowires (NWs) by metal assisted chemical wet etching, using a very thin discontinuous Au layer as precursor for the process. A bright room temperature emission in the visible range due to electron–hole recombination in quantum confined Si NWs is reported. A single walled carbon nanotube (CNT) suspension was prepared and dispersed in Si NW samples. The hybrid Si NW/CNT system exhibits a double emission at room temperature, both in the visible (due to Si NWs) and the IR (due to CNTs) range, thus demonstrating the realization of a low-cost material with promising perspectives for applications in Si-based photonics.
Publication date: 
31 Aug 2016

MJ Lo Faro, C D'Andrea, E Messina, B Fazio, P Musumeci, G Franzò, PG Gucciardi, C Vasi, F Priolo, F Iacona, A Irrera

Biblio References: 
Volume: 613 Pages: 59-63
Thin Solid Films