Preparation of ZnS semiconductor nanocrystals using pulsed laser ablation in aqueous surfactant solutions

ABSTRACTHybrid organic/inorganic nanocomposites composed of zinc hydroxide and surfactant molecule, and/or zinc oxide nanoparticles were fabricated using pulsed laser ablation of zinc in aqueous solutions of various surfactants. A Zn plate was ablated by a pulsed Nd:YAG laser in four types of surfactant solutions with different concentrations. Zinc oxide nanoparticles with average diameter of 10–40 nm were obtained in cationic, amphoteric and nonionic surfactant solutions. Unique layered organic/inorganic nanocomposites composed of zinc hydroxide layers and surfactant molecules were obtained in aqueous solutions of the anionic surfactants, sodium alkyl sulfate (CnH2n+1SO4-·Na+). The carbon number, n, in the alkyl sulfate family is very important for the formation and structure of the layered nanocomposites. The layered organic/inorganic nanocomposite can be obtained only in the specific sodium alkyl sulfates (n = 12, 13, 14 and 16) and the layer spacing of the nanocomposites increased with n from 26.8 Å to 42.0 Å. It is shown that the structures of ZnO nanoparticles and layered organic/inorganic nanocomposites can be controlled by the type of surfactants in solution.

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Observations on the growth of YBa2Cu3O7-δ thin films on MgO by pulsed-laser ablation

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100089652 ◽

1991 ◽

Vol 49 ◽

pp. 1068-1069

Author(s):

M. Grant Norton ◽

C. Barry Carter

Keyword(s):

Thin Film ◽

Thin Films ◽

Laser Ablation ◽

Substrate Surface ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Thin Film Deposition ◽

Film Deposition ◽

Laser Ablation Process ◽

Deposition Parameters

Pulsed-laser ablation has been widely used to produce high-quality thin films of YBa2Cu3O7-δ on a range of substrate materials. The nonequilibrium nature of the process allows congruent deposition of oxides with complex stoichiometrics. In the high power density regime produced by the UV excimer lasers the ablated species includes a mixture of neutral atoms, molecules and ions. All these species play an important role in thin-film deposition. However, changes in the deposition parameters have been shown to affect the microstructure of thin YBa2Cu3O7-δ films. The formation of metastable configurations is possible because at the low substrate temperatures used, only shortrange rearrangement on the substrate surface can occur. The parameters associated directly with the laser ablation process, those determining the nature of the process, e g. thermal or nonthermal volatilization, have been classified as ‘primary parameters'. Other parameters may also affect the microstructure of the thin film. In this paper, the effects of these ‘secondary parameters' on the microstructure of YBa2Cu3O7-δ films will be discussed. Examples of 'secondary parameters' include the substrate temperature and the oxygen partial pressure during deposition.

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Analytical Model for Determining the Effective Size of an Evaporation Region in Pulsed Laser Ablation

Прикладная механика и техническая физика ◽

10.15372/pmtf20180509 ◽

2018 ◽

Keyword(s):

Laser Ablation ◽

Analytical Model ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Effective Size ◽

Evaporation Region

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Atomistic Simulations of Ultrashort Pulsed Laser Ablation of Polycrystalline Diamond

Current Nanoscience ◽

10.2174/157341371130900098 ◽

2013 ◽

Vol 9 (6) ◽

pp. 804-811 ◽

Cited By ~ 6

Author(s):

Z. Li ◽

J. Wang ◽

T. Sun

Keyword(s):

Laser Ablation ◽

Pulsed Laser ◽

Polycrystalline Diamond ◽

Pulsed Laser Ablation ◽

Atomistic Simulations ◽

Ultrashort Pulsed Laser

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Doping nanoparticles using pulsed laser ablation in a liquid containing the doping agent

Nanoscale Advances ◽

10.1039/c9na00223e ◽

2019 ◽

Vol 1 (10) ◽

pp. 3963-3972 ◽

Cited By ~ 7

Author(s):

Arsène Chemin ◽

Julien Lam ◽

Gaétan Laurens ◽

Florian Trichard ◽

Vincent Motto-Ros ◽

...

Keyword(s):

Laser Ablation ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Doping Agent ◽

Laser Ablation In Liquids ◽

Dope Nanoparticles

While doping is crucial for numerous technological applications, its control remains difficult especially when the material is reduced down to the nanometric scale. We suggest a new way to dope nanoparticles using laser ablation in liquids.

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