Effects of dispersion solvent on the formation of silicon nanoparticles synthesized via microemulsion route

Abstract

Silicon nanoparticles are synthesized by microemulsion route. Silicon tetrachloride (SiCl 4 ) is used as a silicon source. Meanwhile, hydrazine (N 2 H 5 OH), sodium hydroxide (NaOH), and polyethylene glycol (PEG) are used as reduction agent, stabilizer, and capping agent, respectively. In this study, the effects of different solvents (methanol, 1-butanol, 2-propanol, ethanol, acetone, and toluene) on the dispersion and the stabilization of silicon nanoparticles are studied intensively. The results in this study show that ethanol solvent has given smaller particle size, better size distribution, stable suspension and well dispersion of silicon nanoparticles. The diameter of synthesized silicon nanoparticles is in the range of 30-100 nm. Moreover, the absorption edge of silicon nanoparticles in ethanol is observed at a shorter wavelength compared to the others solvent.

Magnetic light

“…Lithography cannot be directly applied to produce spherical particles 41 44 . Existing bottom-up methods such as chemical or plasma synthesis typically produce very small silicon particles or a broad particle size distribution 45 46 . The particles of different sizes are mixed together which complicate spectral analysis.…”

Femtosecond Ablation of Silicon in Acetone: Tunable Photoluminescence from Generated Nanoparticles and Fabrication of Surface Nanostructures

“…19 Additionally, luminescent Si NPs are capable materials of demonstrating large third order nonlinear response 20,21 and possess potential for specific applications such as second harmonic generation. 22 Silicon NPs have been fabricated through a variety of techniques such as sol−gel synthesis, 23 vapor deposition, 24,25 rf sputtering, 26 heavy ion irradiation, 27 microemulsion route, 28 and several other chemical and physical methods. Among all these techniques for manipulation of bulk materials to nanoscale, laser ablation in liquid media (LAL) 29−38 is one of the fast, simple, and versatile methods.…”

Synthesis of Si Nanoparticles by Milling Technique

“…Many methods have been developed for the synthesis of nanoparticles, including laser pyrolysis [10], sputtering [11], micro-emulsion [12] and chemical vapor deposition [13]. All these techniques have a common difficulty that the ultrafine particles cannot be produced in large scale.…”