News Column

Study Findings on Nanowires Are Outlined in Reports from Wuhan University of Technology

June 27, 2014

By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Nanowires. According to news reporting originating in Wuhan, People's Republic of China, by NewsRx journalists, research stated, "In this paper, the synthesis of heavily La-doped alpha-Si3N4 nanowires is firstly reported via nitriding the cryomilled La-doped nanocrystalline Si powder. The crystal structure, electronic structure and band structure of La-doped alpha-Si3N4 are calculated by using the CASTEP program code based on the first principles plane-wave pseudo-potential method."

The news reporters obtained a quote from the research from the Wuhan University of Technology, "The microstructure and photoluminescence of heavily La-doped a-Si3N4 nanowires are investigated. The results suggest that La has been already incorporated into Si lattice after the cryomilling process and then successfully entered the lattice of alpha-Si3N4 with the nitridation process. The as-synthesized heavily La-doped alpha-Si3N4 nanowires show high purity and good crystallinity with 30-40 nm in diameter and several tens of micrometers in length."

According to the news reporters, the research concluded: "The optical property shows that there is an intense violet-blue visible emission from 350 nm to 450 nm with one peak at 388 nm due to the recombination between the valence band and the N-4(+) level at room temperature, which is in agreement with the calculated band structure of La-doped alpha-Si3N4."

For more information on this research see: Synthesis and photoluminescence of heavily La-doped alpha-Si3N4 nanowires via nitriding cyromilled nanocrystalline La-doped silicon powder. Journal of Luminescence, 2014;151():66-70. Journal of Luminescence can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Journal of Luminescence -

Our news correspondents report that additional information may be obtained by contacting Z.H. Wang, Wuhan Univ Technol, Key Lab Adv Technol Specially Funct Mat, Minist Educ, Wuhan 430070, People's Republic of China. Additional authors for this research include Z.F. Huang, F. Chen, Q. Shen and L.M. Zhang (see also Nanowires).

Keywords for this news article include: Asia, Wuhan, Nanotechnology, Nanocrystalline, Emerging Technologies, People's Republic of China

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Source: Science Letter

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