Laser Wavelength Effect on Size and Morphology of Silicon Nanoparticles Prepared by Laser Ablation in Liquid

被引：32

作者：

Chewchinda, Pattarin ^{[1
]}

Tsuge, Takeharu ^{[1
]}

Funakubo, Hiroshi ^{[1
]}

Odawara, Osamu ^{[1
]}

Wada, Hiroyuki ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Innovat & Engn Mat, Interdisciplinary Grad Sch Sci & Engn, Yokohama, Kanagawa 2268503, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2013年 / 52卷 / 02期

关键词：

MULTIPLE EXCITON GENERATION; OPTICAL-PROPERTIES; QUANTUM DOTS; NANOCRYSTALS; PHOTOLUMINESCENCE; LUMINESCENCE;

D O I：

10.7567/JJAP.52.025001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of laser wavelength on size and morphology of silicon nanoparticles are studied. To prepare nanoparticles, laser ablation in liquid technique is employed. Absorption spectra demonstrate that with laser wavelength of 532 nm, solution with higher concentration can be prepared in comparison with one obtained from laser wavelength of 1064 nm. Transmission electron microscope (TEM) images reveal nanoparticles with spherical shape from samples produced by both laser wavelengths. However, smaller particles size are obtained from sample prepared by laser wavelength of 532 nm. Raman spectra and photoluminescence (PL) spectra further support the existence of smaller crystal size in this sample. (C) 2013 The Japan Society of Applied Physics

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页数：4

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