Optical properties of SnO2 nanoparticles

Sarmah, Smritimala; Kumar, Ashavani

doi:10.1007/s12648-010-0109-9

Cited by 100 publications

(28 citation statements)

References 33 publications

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“…4(b)) prepared as a control sample showed a peak at about 193 nm, which is typical for tin oxide. 31 For Ag@SnO 2 NPs, the intensity of this peak increased with the increase in the amount of tin stannate added to the nanoparticle solution during the shell formation process. It indicates an increase in the thickness of the SnO 2 shell on the AgNP surface.…”

Section: Resultsmentioning

confidence: 94%

Facile synthesis of SnO₂shell followed by microwave treatment for high environmental stability of Ag nanoparticles

et al. 2020

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Section: Resultsmentioning

confidence: 94%

Facile synthesis of SnO₂shell followed by microwave treatment for high environmental stability of Ag nanoparticles

et al. 2020

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“…[14][15][16]22,[31][32][33][34][35][36][37][38][39][40] However, the peak position of the reported PL bands depends on the growth method and/or growth parameters used. [14][15][16]22,[31][32][33][34][35][36][37][38][39][40] However, the peak position of the reported PL bands depends on the growth method and/or growth parameters used.…”

Section: Resultsmentioning

confidence: 99%

“…Several approaches have been used in the material processing either in the form of powders, thin films, or more recently in synthesized nanostructures. Moreover, unstructured broad luminescence bands were also observed in single crystals, 14 thin films 15 and nanostructures 13,16,17 in a wide spectral range from green to red. Excitonic transitions and donor acceptor pair (DAP) recombination were reported by Blattner et al 14 in single crystals.…”

Section: Introductionmentioning

confidence: 88%

Luminescence studies on SnO₂ and SnO₂:Eu nanocrystals grown by laser assisted flow deposition

Santos

Rodrigues

Holz

et al. 2015

Phys. Chem. Chem. Phys.

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Transparent conductive tin oxide materials have been a research topic extensively studied in recent years due to the great interest for many applications. However, in most of them, the pure form is rarely used, being usually modified by the incorporation of dopants. Selecting the most appropriate technique to develop nanocrystals of doped tin oxide and understanding the influence of dopant on the optical properties are the challenges that need to be addressed when envisaging devices. To fulfill this objective, the recently developed laser assisted flow deposition (LAFD) method is explored to grow SnO2 and SnO2:Eu nanocrystals. The morphology of these nanocrystals was investigated by scanning electron microscopy and well defined prismatic nanocrystals with sizes of ∼60 nm were identified. The crystalline quality assessed by X-ray diffraction measurements and Raman spectroscopy indicates that the produced nanocrystals are monophasic and crystallize in the tetragonal rutile structure. Steady state luminescence studies provide the information on the optical active centres in the SnO2 and SnO2:Eu nanocrystals. For the undoped samples only broad emission bands were observed by pumping the samples in the ultraviolet region. The broad emission was found to be an overlap of green and red optical centres as identified by temperature and excitation intensity dependent luminescence. The latter was found to exhibit an excitonic-related behaviour and the green emission was found to be of utmost importance to discuss the intraionic luminescence in the doped samples. For the SnO2:Eu nanocrystals the luminescence is dominated by the magnetic allowed (5)D0 → (7)F1 transition with the ions in almost undistorted centrosymmetric sites. The ion luminescence integrated intensity is found to increase with increasing temperatures being well accounted for a thermal population provided by the thermal quenching of the green band.

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“…In recent years, pure SnO 2 nanoparticles [30] , SnO 2 nanobelt [23] and SnO 2 nanowire [23] have been prepared, with the band gap energies increasing. The same result has been found in the research of Eu doped SnO 2 nanosized crystals, nanoparticles and nanocrystalline thin films [31][32][33] , which is due to the decreasing size of crystal grains and the quantum confinement effect.…”

Section: Optical Absorptionmentioning

confidence: 99%

Electrospinning synthesis and photoluminescence properties of SnO2:xEu3+ nanofibers

Shen

et al. 2014

Chem. Res. Chin. Univ.

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SnO 2 :xEu 3+ (x=0, 1%, 3%, 5%, molar fraction) fibers were synthesized by electrospinning technology. The size of the as-prepared fibers is relatively uniform and the average diameter is about 200 nm with a large draw ratio. The as-prepared Eu 3+ doped SnO 2 nanofibers have a rutile structure and consist of crystallite grains with an average size of about 10 nm. A slight red shift of the A 1g and B 2g vibration modes and an additional peak at 288 nm were observed in the Raman spectra of the nanofibers. The energies of bandgaps of the SnO 2 nanofiber with Eu doping of 1% and 3% are 2.64 eV, and the energy of bandgap is 2.94 eV with Eu doping of 5%(molar fraction). There is only orange emission( 5 D 0 → 7 F 1 magnetic dipole transition) for Eu doped SnO 2 nanofibers, and no red emission could be observed. The orange emission upon indirect excitation splits into three peaks and the peak intensity at the excitation wavelength of 275 nm is higher than that at the excitation wavelength of 488 nm.

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Optical properties of SnO2 nanoparticles

Cited by 100 publications

References 33 publications

Facile synthesis of SnO₂shell followed by microwave treatment for high environmental stability of Ag nanoparticles

Facile synthesis of SnO₂shell followed by microwave treatment for high environmental stability of Ag nanoparticles

Luminescence studies on SnO₂ and SnO₂:Eu nanocrystals grown by laser assisted flow deposition

Electrospinning synthesis and photoluminescence properties of SnO2:xEu3+ nanofibers

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Optical properties of SnO2 nanoparticles

Cited by 100 publications

References 33 publications

Facile synthesis of SnO2shell followed by microwave treatment for high environmental stability of Ag nanoparticles

Facile synthesis of SnO2shell followed by microwave treatment for high environmental stability of Ag nanoparticles

Luminescence studies on SnO2 and SnO2:Eu nanocrystals grown by laser assisted flow deposition

Electrospinning synthesis and photoluminescence properties of SnO2:xEu3+ nanofibers

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Product

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Facile synthesis of SnO₂shell followed by microwave treatment for high environmental stability of Ag nanoparticles

Facile synthesis of SnO₂shell followed by microwave treatment for high environmental stability of Ag nanoparticles

Luminescence studies on SnO₂ and SnO₂:Eu nanocrystals grown by laser assisted flow deposition