Photoluminescence analysis of colloidal silicon nanoparticles in ethanol produced by double-pulse ns laser ablation

Momeni, A; Mahdieh, Mohammad Hossein

doi:10.1016/j.jlumin.2016.03.029

Cited by 15 publications

(9 citation statements)

References 61 publications

(107 reference statements)

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“…As compared to metal NPs whose PL properties often originate from surface coating or quantum-confined atom clusters with bleached plasmonic state (e.g., Au , ), PL emission of NPs made by LSPC is widely investigated using different kinds of semiconductor nanomaterials. Because of simplicity and flexibility, LSPC has been utilized to synthesize a large variety of luminescent NMs, including elemental semiconductor NPs (e.g., Si, ,,− Ge, , Se, etc. ), oxides (e.g., ZnO, In:ZnO, SnO 2 , TiO 2 , etc.…”

Section: Applicationsmentioning

confidence: 99%

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

2017

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Driven by functionality and purity demand for applications of inorganic nanoparticle colloids in optics, biology, and energy, their surface chemistry has become a topic of intensive research interest. Consequently, ligand-free colloids are ideal reference materials for evaluating the effects of surface adsorbates from the initial state for application-oriented nanointegration purposes. After two decades of development, laser synthesis and processing of colloids (LSPC) has emerged as a convenient and scalable technique for the synthesis of ligand-free nanomaterials in sealed environments. In addition to the high-purity surface of LSPC-generated nanoparticles, other strengths of LSPC include its high throughput, convenience for preparing alloys or series of doped nanomaterials, and its continuous operation mode, suitable for downstream processing. Unscreened surface charge of LSPC-synthesized colloids is the key to achieving colloidal stability and high affinity to biomolecules as well as support materials, thereby enabling the fabrication of bioconjugates and heterogeneous catalysts. Accurate size control of LSPC-synthesized materials ranging from quantum dots to submicrometer spheres and recent upscaling advancement toward the multiple-gram scale are helpful for extending the applicability of LSPC-synthesized nanomaterials to various fields. By discussing key reports on both the fundamentals and the applications related to laser ablation, fragmentation, and melting in liquids, this Article presents a timely and critical review of this emerging topic.

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Section: Applicationsmentioning

confidence: 99%

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

2017

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“…Due to their unique optoelectronic properties, silicon nanoparticles have recently attracted the attention of various industries. In the bulk state, research indicate that silicon nanoparticles exhibit effective visible photoluminescence attributed to quantum confinement resulting from a reduced particle size smaller than the excitonic Bohr radius and their higher surface area to volume ratio [1,2]. The worldwide demand for potential uses for nanosilicon serves as a significant driving force to reduce the size of silicon materials to the nanometer range [3,4].…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterisation of High Grade Nanosilicon from Coastal Landform in Ilaje Local Government Area of Ondo State, Nigeria.

2023

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The application of silicon and silicon based materials in industries and optoelectronic devices cannot be over emphasized due to their unique properties. The availability of high grade silicon has been subject of interest for manufacturers and industrialist as the material has from discovery been very much insufficient to cater for the numerous demands for different uses and utilization. Numerous efforts have been put together to adapt the properties of silicon through the manufacture and fabrication of semiconductor compounds to replace silicon in functionality. Notwithstanding, the quest for more silicon in the environment is yet unabated. This research centers on the isolation and characterisation of high grade nanosilicon from coastal landform in Ilaje Local Government Area of Ondo State, Nigeria due to the attractive nature of the landforms in terms of colour and texture. Sand from the selected study area were categorised into different forms according to their colour and silicon isolated using the magnesiothermic reduction while the nanosilicon was obtained using an appropriate ball milling process. The morphology of nanosilicon from Zion, Micheal-Ugbonla, and Oluwa Glass coastal landforms shows an agglomeration of particles with irregular shapes having average particle sizes of 58.98 nm, 77.82 nm, and 37.27 nm, respectively. The XRD spectra of the nanosilicon showed sharp, distinct peaks that indicate crystallinity of the samples. The percentages of nanosilicon value obtained ranges from 65.23%-80.30% and considered high enough to find specific useful industrial applications in lithium ion batteries, biomedical devices, opto electronic device utilization and computer industries.

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“…It should be noted that the laser irradiation technique efficiently generates surfactant free nanoparticles which can exert an high catalytic activity . For the luminescent silicon nanoparticle formation, such a laser irradiation process is a promising top down approach . A typical process of the silicon nanoparticle formation is as follows: The intense pulsed laser irradiation in a solvent causes the ablation of the target silicon and the generation of silicon clusters inside the bubble of the solvent.…”

Section: Introductionmentioning

confidence: 99%

“…[26][27][28] For the luminescent silicon nanoparticle formation, such a laser irradiation process is a promising top down approach. [29][30][31] A typical process of the silicon nanoparticle formation is as follows: [22] The intense pulsed laser irradiation in a solvent causes the ablation of the target silicon and the generation of silicon clusters inside the bubble of the solvent. Then, the ablated silicon spices condense into the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Facile Formation of Stable Water‐Dispersed Luminescent Silicon Nanocrystals by Laser Processing in Liquid: Toward Fluorescent Labeling for Bio‐Imaging

Nakamura

Chinnathambi

et al. 2019

ChemNanoMat

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We herein develop a facile formation process of a water‐dispersed red luminescent undecenoic acid‐functionalized silicon nanocrystal (UA‐F: Si‐nc) via pulsed laser irradiation of porous silicon (PSi) in an organic solvent. The formed UA‐F: Si‐nc has a high stability against pH changes in aqueous solution and photo‐irradiation in water without any multi‐step surface treatments. Such a robust aqueous surface protection of Si‐nc is caused by hydrophilic organic group terminations and subsequent surface protection of OH bonding. From the viability and in vitro bio‐imaging tests against Hela cells and A549 cells, we confirmed that UA‐F: Si‐nc has very low cytotoxicity due to the essential biocompatibility of silicon and remains exhibiting a bright red luminescence in the cells. Because of its high stability in water as well as biocompatibility, UA‐F: Si‐nc is expected to act as a fluorescent label of cellular imaging.

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Photoluminescence analysis of colloidal silicon nanoparticles in ethanol produced by double-pulse ns laser ablation

Cited by 15 publications

References 61 publications

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

Isolation and Characterisation of High Grade Nanosilicon from Coastal Landform in Ilaje Local Government Area of Ondo State, Nigeria.

Facile Formation of Stable Water‐Dispersed Luminescent Silicon Nanocrystals by Laser Processing in Liquid: Toward Fluorescent Labeling for Bio‐Imaging

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