Photoluminescence and structural properties of Si/SiC core–shell nanowires growth by HWCVD

Content Provider	Semantic Scholar
Author	Nazarudin, Nur Fatin Farhanah Binti Noor, Nurul Jannah Binti Mohd Rahman, Saadah Abdul Goh, Boon Tong
Copyright Year	2015
Abstract	Si/SiC core–shell nanowires grown by hot-wire chemical vapor deposition were studied. Ni nanoparticles act as metal nano-templates to catalyze the growth of these core–shell nanowires. These nanowires were grown at different deposition pressures of 0.5 and 1 mbar. The nanowires showed a tapered-like morphology at deposition pressure 0.5 mbar. Increase in pressure to 1 mbar leads to a formation of agglomerated grains at the root of the nanowires. The results show that these nanowires consisted of crystalline Si core and amorphous SiC shell nanowires. Increase in pressure enhanced the formation of SiC phase in the shell of the nanowires. On the other hand, the formation of the agglomerated grains attributed to an increasing of the SiC phase at higher deposition pressure. The presence of Si and SiC nano-crystallites embedded within an amorphous matrix exhibited a room temperature PL emission in the range of 400–1000 nm. The effects of the deposition pressure on the optical and structural properties of the nanowires are also discussed.
Starting Page	149
Ending Page	157
Page Count	9
File Format	PDF HTM / HTML
DOI	10.1016/j.jlumin.2014.08.049
Alternate Webpage(s)	https://umexpert.um.edu.my/file/publication/00006469_109807.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.jlumin.2014.08.049
Volume Number	157
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article