Energy transfer from the host to Er3+ dopants in semiconductor SnO2 nanocrystals segregated in sol–gel silica glasses

del-Castillo, J.; Rodrı́guez, V.D.; Yanes, A.C.; Méndez‐Ramos, J.

doi:10.1007/s11051-007-9283-x

Cited by 40 publications

(22 citation statements)

References 14 publications

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“…A similar mean radius of 2.8 nm was obtained for the single Tb 3+ -doped samples. The obtained nanocrystal radii values are comparable to those calculated by the authors in previous works of glass-ceramics un-doped [10] and doped with Eu 3+ and Er 3+ [7,8,11], respectively, and therefore show the influence of the RE dopants in preventing the nanocrystal growth.…”

Section: Resultssupporting

confidence: 88%

“…Moreover, a broad peak with the maximum at about 540 nm is also observed. This peak is similar to the one observed by the authors in un-doped and Er 3+ -doped glass-ceramics, which was attributed to exciton recombination mediated by oxygen vacancies [10,11]. The intensity ratio of the broad emission to the Tb 3+ emission decreases with the excitation wavelengths from 350 to 290 nm.…”

Section: Resultssupporting

confidence: 87%

“…In previous works of the authors, un-doped [10] and Eu 3+ -doped [7,8] and Er 3+ -doped [11] SiO 2 -SnO 2 nano-glass-ceramics were obtained by thermal treatment of precursor sol-gel derived glasses. In the un-doped samples, a broad vis emission was observed under UV excitation of the semiconductor nanoparticles, which was attributed to electron-hole recombination in oxygen vacancies.…”

Section: Introductionmentioning

confidence: 99%

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Luminescent properties of Eu3+–Tb3+-doped SiO2–SnO2-based nano-glass–ceramics prepared by sol–gel method

del-Castillo

Yanes

Velázquez

et al. 2009

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 88%

Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Luminescent properties of Eu3+–Tb3+-doped SiO2–SnO2-based nano-glass–ceramics prepared by sol–gel method

del-Castillo

Yanes

Velázquez

et al. 2009

Journal of Alloys and Compounds

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“…Furthermore, Er-doped SnO 2 structures have been reported as potential candidates as waveguides, electroluminescent displays, or building blocks for advanced materials [16]. While numerous reports are available on the F-doping of SnO 2 (both in films and in powders) [17,18], limited studies exist on Er-doping in SnO 2 because of the enormous size difference between Er 3+ and Sn 4+ and the preference of Er 3+ to have coordination numbers greater than 6 [16,[19][20][21]. The present paper describes the synthesis of SnO 2 nanocrystals co-doped with Er 3+ and F − using a single-source precursor.…”

Section: Introductionmentioning

confidence: 99%

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Kumar¹,

Uma²,

Nagarajan³

2014

Turk J Phys

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Uniformly (Er, F) co-doped SnO 2 nanocrystals, obtained by a low-temperature solution-based method, were characterized by a variety of analytical techniques. The structure, morphology, and ratio of the elements were confirmed by PXRD, SEM, and TEM analysis, respectively. From XPS analysis, atomic concentrations of Sn, O, and F were quantified. Interparticle pore size increased significantly (with a mean pore diameter of 25.82 nm) in the codoped sample. Higher in-plane oxygen vacancies and bands due to multiphonon scattering were observed in the Raman spectrum of the sample. The defect traps in the sample were experimentally determined using TL spectroscopy. A broad intense glow curve at 485 K and a weak emission at 600 K in the TL spectrum were quenched on exposure to UV radiation. A large blue shift of the exciton absorption (due to the Moss-Burstein effect) and sharp bands due to intraconfigurational f − f transitions were observed for (Er, F) co-doped SnO 2 with an estimated band gap of 4.18 eV.From the photoluminescence spectral studies, 3 types of emission centers at 471 nm, 546 nm, and 627 nm were detected.Co-doping stabilized ferromagnetism in SnO 2 at room temperature.

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“…A possible strategy to reduce this problem is to use transparent glass-ceramics. The incorporation of rare earth ions in nanocrystals prevents the aggregation of these ions and allows nanocrystal-ion energy transfer [1]. This phenomenon increases the luminescence quantum yield because SnO 2 has a higher absorption cross section than that one of rare earth ions.…”

Section: Introductionmentioning

confidence: 99%

SnO2 based glasses: a viable photonic system

Tran¹,

Meneghetti²,

Żur³

et al. 2016

18th Italian National Conference on Photonic Technologies (Fotonica 2016)

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This version is available at https://strathprints.strath.ac.uk/60983/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the AbstractThe present work focuses on sol-gel derived SnO 2 -based thin glass-ceramic films doped with Er 3+ ions, fabricated by dipcoating technique. Our goal is to find a viable fabrication protocol to obtain them. Thin films with a variety of composition were synthesized and their structural, optical and spectroscopic properties were investigated. The FTIR spectra and X-ray diffraction patterns were used to characterize the structure of the thin films. The transparency of the thin film was tested by UV-Vis transmittance measurements. The energy transfer dynamic was investigated by time-resolved spectroscopy and photoluminescence measurements.

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Energy transfer from the host to Er3+ dopants in semiconductor SnO2 nanocrystals segregated in sol–gel silica glasses

Cited by 40 publications

References 14 publications

Luminescent properties of Eu3+–Tb3+-doped SiO2–SnO2-based nano-glass–ceramics prepared by sol–gel method

Luminescent properties of Eu3+–Tb3+-doped SiO2–SnO2-based nano-glass–ceramics prepared by sol–gel method

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

SnO2 based glasses: a viable photonic system

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