By a News Reporter-Staff News Editor at Science Letter -- Research findings on Silicon are discussed in a new report. According to news reporting from Kunming, People's Republic of China, by NewsRx journalists, research stated, "Porous silicon (PS) was prepared by anodizing highly doped p-type silicon in the solution of H2O/ethanol/HF. The effects of key fabrication parameters (HF concentration, etching time and current density) on the nanostructure of PS were carefully investigated by AFM, SEM and TEM characterization."
The news correspondents obtained a quote from the research from Yunnan University, "According to the experimental results, a more full-fledged model was developed to explain the crack behaviors on PS surface. The photoluminescence (PL) of resulting PS was studied by a fluorescence spectrophotometer and the results show that PL peak positions shift to shorter wavelength with the increasing current density, anodisation time and dilution of electrolyte. The PL spectra blue shift of the sample with higher porosity is confirmed by HRTEM results that the higher porosity results in smaller Si nanocrystals."
According to the news reporters, the research concluded: "A linear model (lambda(PL/nm)=620.3-0.595P, R=0.905) was established to describe the correlation between PL peak positions and porosity of PS."
For more information on this research see: Influence of fabrication parameter on the nanostructure and photoluminescence of highly doped p-porous silicon. Journal of Luminescence, 2014;146():76-82. Journal of Luminescence can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Luminescence - www.elsevier.com/wps/product/cws_home/505700)
Our news journalists report that additional information may be obtained by contacting S.Y. Li, Yunnan University, Fac Phys Sci & Technol, Kunming 650091, People's Republic of China. Additional authors for this research include W.H. Ma, Y. Zhou, X.H. Chen, M.Y. Ma, Y.Y. Xiao and Y.H. Xu (see also Silicon).
Keywords for this news article include: Asia, Kunming, Nanotechnology, Porous Silicon, Emerging Technologies, People's Republic of China
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