Synthesis of tin oxide nanosized crystals embedded in silica matrix through sol–gel process using alkoxide precursors

Wu, Yonghui; Hamd, Wael; Thune, Elsa; Boulle, Alexandre; Rochas, C.; Guinebretière, René

doi:10.1016/j.jnoncrysol.2009.04.033

Cited by 17 publications

(11 citation statements)

References 66 publications

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“…The size of the crystal varies from 4 to 50 nm for tin oxide concentration ranging from 20 to 90 mol% (evaluated by Scherrer's formula). These values are in rather good agreement with the crystallite size previously observed by Wu et al 23 or Van Tran et al 25 on SiO 2 -SnO 2 nanocomposite thin films and are also confirmed by TEM studies on the powder SN20 ( fig. 2a) and SN40 ( Fig.…”

Section: Microstructural Investigationssupporting

confidence: 91%

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Investigation of passive and active silica-tin oxide nanostructured optical fibers fabricated by "inverse dip-coating" and "powder in tube" method based on the chemical sol-gel process and laser emission

Granger

Restoin

Roy

et al. 2015

Micro-Structured and Specialty Optical Fibres IV

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et al.. Investigation of passive and active silica-tin oxide nanostructured optical fibers fabricated by " inverse dip-coating " and " powder in tube " method based on the chemical sol-gel process and laser emission. ABSTRACTThis paper presents a study of original nanostructured optical fibers based on the SiO 2 -SnO 2 -(Yb 3+ ) system. Two different processes have been developed and compared: the sol-gel chemical method associated to the "inverse dipcoating" (IDC) and the "powder in tube" (PIT) process. The microstructural and optical properties of the fibers are studied according to the concentration of SnO 2 . X-Ray Diffraction as well as Transmission Electron Microscopy studies show that SnO 2 crystallizes into the cassiterite phase as nanoparticles with a diameter ranging from 4 to 50 nm as a function of tin oxide concentration. A comparative study highlights a better conservation of SnO 2 into the fiber core with the PIT approach according to the refractive index profile and X-Ray analysis measurement. The attenuation evaluated by the classic cut-back method gives respectively values higher than 3 dB/m and 0.2 dB/m in the visible (VIS) and infrared (IR) range for the PIT fiber whereas background losses reach 0.5 dB/m in the VIS range for IDC fibers. The introduction of ytterbium ions into the core of PIT fibers, directly in the first chemical step, leads to a laser emission (between 1050 and 1100 nm) according to the fiber length under 850 nm wavelength pumping. Luminescence studies have demonstrated the influence of the tin oxide nanostructure on the rare earth optical properties especially by the modification of the absorption (850 to 1000 nm) and emission (950 to 1100 nm) by discretization of the bands, as well as on the IR emission lifetime evaluated to 10 µs.

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Section: Microstructural Investigationssupporting

confidence: 91%

“…For this reason, the chemical sol-gel process appears as a very interesting alternative method. Indeed, it is a low temperature process which allows producing nanostructured SiO 2 -SnO 2 compounds as well as thin films with a high control of the doping level 23 and a high purity.…”

Section: Introductionmentioning

confidence: 99%

Investigation of passive and active silica-tin oxide nanostructured optical fibers fabricated by "inverse dip-coating" and "powder in tube" method based on the chemical sol-gel process and laser emission

Granger

Restoin

Roy

et al. 2015

Micro-Structured and Specialty Optical Fibres IV

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“…As well, several theoretical studies have predicted Si x Sn 1Àx and Ge x Sn 1Àx alloying may provide materials with desirable optical and electronic properties (e.g., direct band gap, high carrier mobility, low carrier effective mass). 133,134 Reports of Sn and SnO 2 NCs embedded in SiO 2 have also come forward, prepared by physical [135][136][137] and sol-gel [138][139][140] methods. There is a rich compositional space that is yet to be explored.…”

Section: Outlook/conclusionmentioning

confidence: 99%

Sol–gel precursors for group 14 nanocrystals

2010

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The synthesis of Group 14 nanocrystals with controlled size dispersity and composition is an area of considerable interest due to their size-dependent optical and electronic properties, thought to enable their use in a wide range of applications such as fluorophores for biological imaging and photovoltaics. In this review, the use of sol-gel derived polymers as precursors for oxide-embedded Group 14 nanocrystals is presented. This versatile approach can yield tangible quantities of both oxide-embedded and freestanding materials with controllable size, narrow size distributions, and tailorable composition.

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“…Zn was used as a dopant in order to form stable bonds [3]. Nanosized SnO 2 has been produced via several methods; including sol-gel [4], spray pyrolysis [2], pulsed laser ablation [5], chemical vapour deposition [6], sputtering and many others [7]. However these techniques often cause a very high degree of agglomeration.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of Zinc doped tin oxide synthesized by mechanochemical processing

Saa

Zakaria

Talari

et al. 2012

2012 10th IEEE International Conference on Semiconductor Electronics (ICSE)

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Simple doping process of Zinc (Zn) with Tin oxide (SnO 2 ) was successfully prepared by the mechanochemical process, followed by a heat treatment and leaching. The raw materials are Tin Chloride (SnCl 2 ) as a base element, Sodium Carbonate (Na 2 CO 3 ) as an oxidizer and Sodium chloride (NaCl) as a diluent, while Zinc Chloride (ZnCl 2 ) as a doping element. In this paper, we with fix wavelength investigated the effect of different concentration of Zn dopant on the optical properties of SnO 2 . The chemical formula of doped SnO 2 will be Sn 1-x Zn x O 2 . The peaks of the X-ray Diffraction (XRD) prove that all Zn had been successfully doped into SnO 2 host. The average sizes of crystalline were around 25 to 44 mm and it was calculated by using Scherrer's equation. While Ultraviolet-visible spectroscopy (UV-VIS) and photoluminescence were used to analyze the energy gap differences of pure SnO 2 and doped SnO 2 with varying Zn concentration. Results show that increasing in the concentration can decrease the volume of samples. Red shift in energy gap (E g ) with an increasing Zn concentration (x ≤ 0.06) could be attributed to the Burstein-Moss effect that relates the E g with the crystallite size of SnO 2 formed before and after the doping process. The blue shift in E g at x>0.06 was possibly due to excess oxygen and may also be affected by sudden increases in crystallite size. The emission intensity was changed inversely with the E g .

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Synthesis of tin oxide nanosized crystals embedded in silica matrix through sol–gel process using alkoxide precursors

Cited by 17 publications

References 66 publications

Investigation of passive and active silica-tin oxide nanostructured optical fibers fabricated by "inverse dip-coating" and "powder in tube" method based on the chemical sol-gel process and laser emission

Investigation of passive and active silica-tin oxide nanostructured optical fibers fabricated by "inverse dip-coating" and "powder in tube" method based on the chemical sol-gel process and laser emission

Sol–gel precursors for group 14 nanocrystals

Optical properties of Zinc doped tin oxide synthesized by mechanochemical processing

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