Synthesis of silicon nanoparticles by laser ablation at low fluences in water and ethanol

被引：9

作者：

Serrano-Ruz, J. A. ^{[1
]}

Quinones-Galvan, J. G. ^{[1
]}

Santos Cruz, J. ^{[2
]}

de moure-Flores, F. ^{[2
]}

Campos Gonzalez, E. ^{[3
]}

Chavez-Chavez, A. ^{[1
]}

Gomez-Rosas, G. ^{[1
]}

机构：

[1] Ctr Univ Ciencias Exactas & Ingenierias, Dept Fis, Blvd Marcelino Garcia Barragan 1421, Guadalajara 44430, Jalisco, Mexico

[2] Univ Autonoma Queretaro, Fac Quim, Mat, Queretaro 76010, Mexico

[3] Inst Nacl Invest Nucl, CONACyT Dept Fis, Apdo Postal 18-1027, Mexico City 11801, DF, Mexico

来源：

MATERIALS RESEARCH EXPRESS | 2020年 / 7卷 / 02期

关键词：

Si nanoparticles; laser ablation in liquids; laser fragmentation; RAMAN-SCATTERING;

D O I：

10.1088/2053-1591/ab6e2f

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Colloidal silicon nanoparticles (Si-nc) where synthesized by laser ablation of a solid Si target in water and ethanol. The target was immersed in a vessel containing the solvent and irradiated during 5 and 10 min at different fluences: 0.530, 0.608, 0.687 J cm(-2). Ablation was carried out using a laser wavelength of 1064 nm. The obtained colloidal nanoparticles were irradiated after the synthesis to evaluate if laser fragmentation could be produced. In addition, a series of nanoparticles using ethanol as liquid medium was synthesized ablating with 532 nm. Colloidal nanoparticles were structurally characterized by Raman spectroscopy and Transmission Electron Microscopy. Size of the Si-nc were calculated by the theorical models: Bond Polarizability Model (BPM) and One-Phonon Confinement Model (PCM), where nanocrystals ranging from 2 to 11 nm were found.

引用

页数：9

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