High Efficiency Preparation, Structure and Properties of Silicon Nano-Crystals by Induction Plasma Method
Journal Title: NanoWorld Journal - Year 2016, Vol 2, Issue 3
Abstract
Free-standing silicon nano-crystals were synthesized from silicon multicrystals with high efficiency by induction plasma method. The particle morphology and distribution of nano powder were significantly influenced by powder feed rate, induction plasma power and the ratio of sheath gas. The average particle size monotonously increased with the increase of powder feed rate. The nano powder distribution became more and more concentrated as induction plasma power increased. The average size of nanopowder decreased obviously with the increase of H2 proportion. After the optimization of plasma parameters, mono-dispersed silicon nano-crystals were obtained with an average diameter of 20-85 nm and the mass yield reached a high level as 327 g/h. Meanwhile, the precursor utilization rate exceeded 81.8%. Under the TEM observation, all free-standing silicon nano-crystals had a uniform composition with a single crystal surrounded by a 1-2 nm thick amorphous silicon oxide shell. Although amorphous-like component was detected by Raman spectroscopy, the ensemble of silicon nano-crystals still showed a good crystallinity. The photoluminescence spectrum showed emission peaks in green region around 558 nm, which can be attributed to the oxide-related surface state of silicon nano-crystals.
Authors and Affiliations
Wen-zhi Yang, Wei-ming Huang, Qiang Zheng, Wei Huang, Zi-ming Chen, Fu-jun Shang, Bao-yu Zhang
Keywords
Related Articles
- EP ID EP223429
- DOI 10.17756/nwj.2016-032
- Views 393
- Downloads 0
Determination of Protein-Protein Interaction for Cancer Control via Mass Spectrometry and Nanoconductimetry of NAPPA SNAP Arrays: An Overview
Background: Protein-protein interactions play a major role in Cancer Control and their detailed understanding by Label-Free Nanotechnology is essential especially within the framework of a personalized medicine-based app...
Non-monotonic Coercivity of Iron Filled Carbon Nanotube/Polystyrene Composites
Multiwall carbon nanotubes (MWCNT) filled with magnetic nanoparticles constitute a fabulous magnetic system due to the fact that encapsulated magnetic nanoparticles remain protected from both aggregation and oxidation. S...
Proceedings of the First NanoWorld Conference in Boston (NWC-2016). Part II: Plenary Symposia
Regimen-related toxicities are common, often painful, disruptive and dose-limiting complications of many forms of chemo- and radiation therapy used for the treatment of cancer. In addition to their symptomatic and physio...
Proceedings ELBA NW Nanoforum XLII on Structural NanoProteomics. Part-1: Introduction and Topics–XFEL versus Synchrotron Radiation and Cryo-EM
The Fondazione EL.B.A. (EL.ELECTRONICS B.IOTECNOLOGY A.DVANCED) Nicolini was an initiative created by Professor Claudio Nicolini member of the National Science and Technology Council and called from USA as Eminent Scient...
Perspectives: DOD Inkjets at High and Ultra-Brilliant Light Sources
Droplets generated by inkjets can serve as carriers for biological solutions and objects including nanocrystals. X-ray scattering from ballistic droplets loaded with biological matter provides conformational and structur...