Silicon nanoparticles generated by femtosecond laser ablation in a liquid environment

被引：58

作者：

Semaltianos, N. G. ^{[1
]}

Logothetidis, S. ^{[1
]}

Perrie, W. ^{[2
]}

Romani, S. ^{[2
]}

Potter, R. J. ^{[2
]}

Edwardson, S. P. ^{[2
]}

French, P. ^{[3
]}

Sharp, M. ^{[3
]}

Dearden, G. ^{[2
]}

Watkins, K. G. ^{[2
]}

机构：

[1] Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki 54124, Greece

[2] Univ Liverpool, Dept Engn, Liverpool L69 3GH, Merseyside, England

[3] Liverpool John Moores Univ, Gen Engn Res Inst, Liverpool L3 3AF, Merseyside, England

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2010年 / 12卷 / 02期

关键词：

Silicon nanoparticles; Synthesis; Femtosecond laser ablation; Raman spectroscopy; OPTICAL-PROPERTIES; SI NANOPARTICLES; PHOTOLUMINESCENCE; RAMAN; NANOCRYSTALS; ABSORPTION; PICOSECOND; DEPOSITION; CLUSTERS; SPECTRA;

D O I：

10.1007/s11051-009-9625-y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Silicon nanoparticles were generated by femtosecond laser [387 nm, 180 fs, 1 kHz, pulse energy = 3.5 mu J (fluence = 0.8 J/cm(2))] ablation of silicon in deionized water. Nanoparticles with diameters from similar to 5 up to similar to 200 nm were observed to be formed in the colloidal solution. Their size distribution follows log-normal function with statistical median diameter of approximate to 20 nm. Longer ablation time leads to a narrowing of the nanoparticle size distribution due to the interaction of the ablating laser beam with the produced nanoparticles. Raman spectroscopy measurements confirm that the nanoparticles exhibit phonon quantum confinement effects and indicate that under the present conditions of ablation they are partially amorphous.

引用

页码：573 / 580

页数：8

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