Structural properties of silicon nanoparticles formed by pulsed laser ablation in liquid media

被引：0
作者：
O. I. Eroshova
P. A. Perminov
S. V. Zabotnov
M. B. Gongal’skii
A. A. Ezhov
L. A. Golovan’
P. K. Kashkarov
机构：
[1] Moscow State University,
[2] National Research Center Kurchatov Institute,undefined
来源：
Crystallography Reports | 2012年 / 57卷
关键词：
Laser Ablation; Femtosecond Laser; Crystallography Report; Pulse Laser Ablation; Silicon Nanoparticles;
D O I：
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中图分类号：
学科分类号：
摘要：
Silicon nanoparticles have been formed as a result of the irradiation of single-crystal silicon targets in distilled water and liquid nitrogen, by, respectively, picosecond and femtosecond laser pulses. The main structural properties of these nanoparticles have been investigated by atomic force microscopy, transmission electron microscopy, electron diffraction, Raman scattering, and photoluminescence spectroscopy. These particles are found to be mainly spherical. The presence of crystalline and amorphous silicon phases under picosecond ablation in water is established experimentally. Irradiation by femtosecond pulses in liquid nitrogen can yield nanoparticles smaller than 5 nm in size, which are quantum dots with a characteristic photoluminescence peak near 750 nm.
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页码：831 / 835
页数：4
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