Fluorescence of silicon nanoparticles prepared by nanosecond pulsed laser

Liu, Chunyang; Sui, Xin; Yang, Fang; Ma, Wei; Li, Jishun; Xue, Yujun; Fu, Xing

doi:10.1063/1.4868624

Title: Fluorescence of silicon nanoparticles prepared by nanosecond pulsed laser

Full Record
Other Related Research

Abstract

A pulsed laser fabrication method is used to prepare fluorescent microstructures on silicon substrates in this paper. A 355 nm nanosecond pulsed laser micromachining system was designed, and the performance was verified and optimized. Fluorescence microscopy was used to analyze the photoluminescence of the microstructures which were formed using the pulsed laser processing technique. Photoluminescence spectra of the microstructure reveal a peak emission around 500 nm, from 370 nm laser irradiation. The light intensity also shows an exponential decay with irradiation time, which is similar to attenuation processes seen in porous silicon. The surface morphology and chemical composition of the microstructure in the fabricated region was also analyzed with multifunction scanning electron microscopy. Spherical particles are produced with diameters around 100 nm. The structure is compared with porous silicon. It is likely that these nanoparticles act as luminescence recombination centers on the silicon surface. The small diameter of the particles modifies the band gap of silicon by quantum confinement effects. Electron-hole pairs recombine and the fluorescence emission shifts into the visible range. The chemical elements of the processed region are also changed during the interaction between laser and silicon. Oxidation and carbonization play an important role in the enhancement ofmore » fluorescence emission.« less

Authors:

Liu, Chunyang; Sui, Xin; Yang, Fang; Ma, Wei; Li, Jishun; Xue, Yujun ^[1]; Fu, Xing ^[2]

Henan University of Science and Technology, Luoyang, 471003 (China)
Tianjin University, Tianjin, 300072 (China)

Publication Date:: Sat Mar 15 00:00:00 EDT 2014

OSTI Identifier:: 22250874

Resource Type:: Journal Article

Journal Name:: AIP Advances

Additional Journal Information:: Journal Volume: 4; Journal Issue: 3; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2158-3226

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBONIZATION; CHEMICAL COMPOSITION; FLUORESCENCE; INTERACTIONS; IRRADIATION; LASER BEAM MACHINING; LASER RADIATION; MICROSTRUCTURE; NANOSTRUCTURES; OXIDATION; PARTICLES; PHOTOLUMINESCENCE; SCANNING ELECTRON MICROSCOPY; SILICON; SPECTRA; SUBSTRATES

Citation Formats


                    Liu, Chunyang, Sui, Xin, Yang, Fang, Ma, Wei, Li, Jishun, Xue, Yujun, and Fu, Xing. Fluorescence of silicon nanoparticles prepared by nanosecond pulsed laser.  United States: N. p., 2014. 
        Web.  doi:10.1063/1.4868624.

Copy to clipboard


                    Liu, Chunyang, Sui, Xin, Yang, Fang, Ma, Wei, Li, Jishun, Xue, Yujun, & Fu, Xing. Fluorescence of silicon nanoparticles prepared by nanosecond pulsed laser.  United States.  https://doi.org/10.1063/1.4868624

Copy to clipboard


                    Liu, Chunyang, Sui, Xin, Yang, Fang, Ma, Wei, Li, Jishun, Xue, Yujun, and Fu, Xing. 2014.  
        "Fluorescence of silicon nanoparticles prepared by nanosecond pulsed laser".  United States.  https://doi.org/10.1063/1.4868624.

Copy to clipboard


                    
@article{osti_22250874,

  title        = {Fluorescence of silicon nanoparticles prepared by nanosecond pulsed laser},

  author       = {Liu, Chunyang and Sui, Xin and Yang, Fang and Ma, Wei and Li, Jishun and Xue, Yujun and Fu, Xing},

  abstractNote = {A pulsed laser fabrication method is used to prepare fluorescent microstructures on silicon substrates in this paper. A 355 nm nanosecond pulsed laser micromachining system was designed, and the performance was verified and optimized. Fluorescence microscopy was used to analyze the photoluminescence of the microstructures which were formed using the pulsed laser processing technique. Photoluminescence spectra of the microstructure reveal a peak emission around 500 nm, from 370 nm laser irradiation. The light intensity also shows an exponential decay with irradiation time, which is similar to attenuation processes seen in porous silicon. The surface morphology and chemical composition of the microstructure in the fabricated region was also analyzed with multifunction scanning electron microscopy. Spherical particles are produced with diameters around 100 nm. The structure is compared with porous silicon. It is likely that these nanoparticles act as luminescence recombination centers on the silicon surface. The small diameter of the particles modifies the band gap of silicon by quantum confinement effects. Electron-hole pairs recombine and the fluorescence emission shifts into the visible range. The chemical elements of the processed region are also changed during the interaction between laser and silicon. Oxidation and carbonization play an important role in the enhancement of fluorescence emission.},

  doi          = {10.1063/1.4868624},

  url          = {https://www.osti.gov/biblio/22250874},
  journal      = {AIP Advances},

  issn         = {2158-3226},

  number       = 3,

  volume       = 4,

  place        = {United States},

  year         = {Sat Mar 15 00:00:00 EDT 2014},

  month        = {Sat Mar 15 00:00:00 EDT 2014}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1063/1.4868624

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Laser ablation of electronic materials including the effects of energy coupling and plasma interactions

Thesis/Dissertation Zeng, Xianzhong

Many laser ablation applications such as laser drilling and micromachining generate cavity structures. The study of laser ablation inside a cavity is of both fundamental and practical significance. In this dissertation, cavities with different aspect ratios (depth/diameter) were fabricated in fused silica by laser micromachining. Pulsed laser ablation in the cavities was studied and compared with laser ablation on a flat surface. The formation of laser-induced plasmas in the cavities and the effects of the cavities on the ablation processes were investigated. The temperatures and electron number densities of the resulting laser-induced plasmas in the cavities were determined from spectroscopicmore »« less
Hole transport through proton-irradiated p-type silicon wafers during electrochemical anodization

Journal Article Breese, M; Champeaux, F; Bettiol, A; ... - Physical Review. B, Condensed Matter and Materials Physics

The hole current density flowing through and around proton-irradiated areas of p-type silicon during electrochemical anodization is simulated and studied experimentally using scanning electron microscopy and photoluminescence imaging. It is shown that for certain irradiation geometries the current flow may be either reduced or enhanced in areas adjacent to irradiated lines, resulting in enhanced or reduced rates of porous silicon formation and corresponding changes in photoluminescence intensity and feature height. The current flow to the surface is unaffected by both the beam straggle and the high defect density at the end of ion range, enabling feature dimensions of {approx}200 nmmore »« less
https://doi.org/10.1103/PHYSREVB.73.0
Morphology of IR and UV Laser-induced Structural Changes on Silicon Surfaces

Journal Article Jimenez-Jarquin, J; Haro-Poniatowski, E; Fernandez-Guasti, M; ... - AIP Conference Proceedings

Using scanning electronic microscopy, we analyze the structural changes induced in silicon (100) wafers by focused IR (1064 nm) and UV (355 nm) nanosecond laser pulses. The experiments were performed in the laser ablation regime. When a silicon surface is irradiated by laser pulses in an O2 atmosphere conical microstructures are obtained. The changes in silicon surface morphology depend both on the incident radiation wavelength and the environmental atmosphere. We have patterned Si surfaces with a single focused laser spot and, in doing the experiments with IR or UV this reveals significant differences in the initial surface cracking and patternmore »« less
https://doi.org/10.1063/1.1928156
Pd nanoparticles formation by femtosecond laser irradiation and the nonlinear optical properties at 532 nm using nanosecond laser pulses

Journal Article Guanghua, Fan; Shiliang, Qu; Qiang, Wang; ... - Journal of Applied Physics

Pd nanoparticles (NPs) were prepared by focused femtosecond laser irradiation of PdCl{sub 2} dissolved in ethanol. Transmission electron microscopy (TEM) analysis revealed that Pd NPs show certain crystalline microstructure, and the average diameter is 3.4 nm with narrow size distribution from 2.0 to 6.0 nm. The nonlinear optical absorption and refraction of Pd NPs solution were investigated with nanosecond laser pulses at 532 nm. The nonlinear absorption of Pd NPs is saturable at low intensity of 3.28x10{sup 11} W/m{sup 2} but it is changed to reverse saturable with the intensity increased to 7.96x10{sup 11} W/m{sup 2}, which accordingly indicates themore »« less
https://doi.org/10.1063/1.3533738
A method for the formation of Pt metal nanoparticle arrays using nanosecond pulsed laser dewetting

Journal Article Owusu-Ansah, Ebenezer; Horwood, Corie; Birss, Viola; ... - Applied Physics Letters

Nanosecond pulsed laser dewetting of Pt thin films, deposited on a dimpled Ta (DT) surface, has been studied here in order to form ordered Pt nanoparticle (NP) arrays. The DT substrate was fabricated via a simple electrochemical anodization process in a highly concentrated H{sub 2}SO{sub 4} and HF solution. Pt thin films (3–5 nm) were sputter coated on DT and then dewetted under vacuum to generate NPs using a 355 nm laser radiation (6–9 ns, 10 Hz). The threshold laser fluence to fully dewet a 3.5 nm thick Pt film was determined to be 300 mJ/cm{sup 2}. Our experiments have shown that shorter irradiation timesmore »« less
https://doi.org/10.1063/1.4921528

Similar Records