Confined diffusion of erbium excitations in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>SnO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>nanoparticles embedded in silica: A time-resolved infrared luminescence study

Brovelli, Sergio; Chiodini, N.; Meinardi, F.; Monguzzi, Angelo; Lauria, A.; Lorenzi, Roberto; Vodopivec, Bruno; Mozzati, Maria Cristina; Палеари, А.

doi:10.1103/physrevb.79.153108

Cited by 17 publications

(9 citation statements)

References 28 publications

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“…The EPR spectra in Fig. 7 are similar to those reported previously for Er-doped glasses and disordered materials [36,38,39]. The EPR spectra are composed of a very broad and intense signal (line width around 1500 G) located at low field (g ≈ 6.7).…”

Section: Resultssupporting

confidence: 73%

Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Leones¹,

Fernandes²,

Sentanin³

et al. 2014

Electrochimica Acta

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Section: Resultssupporting

confidence: 73%

Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Leones¹,

Fernandes²,

Sentanin³

et al. 2014

Electrochimica Acta

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“…SnO 2 NCs have been successfully obtained in transparent silica glass 5,26 with interesting optical properties, such as strong nonlinear response 27 , photosensitivity 28 and sensitized emission from rare-earth (RE) dopants excited via energy-transfer from the NCs [29][30][31] . Most relevant for this discussion, band-edge excitonic emission at 320-360 nm (refs 6,32,33) and radiative recombination mediated by shallow traps emitting at 370-390 nm (ref.…”

mentioning

confidence: 99%

Fully inorganic oxide-in-oxide ultraviolet nanocrystal light emitting devices

et al. 2012

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The development of integrated photonics and lab-on-a-chip platforms for environmental and biomedical diagnostics demands ultraviolet electroluminescent materials with high mechanical, chemical and environmental stability and almost complete compatibility with existing silicon technology. Here we report the realization of fully inorganic ultraviolet lightemitting diodes emitting at 390 nm with a maximum external quantum efficiency of ~0.3%, based on sno 2 nanoparticles embedded in sio 2 thin films obtained from a solution-processed method. The fabrication involves a single deposition step onto a silicon wafer followed by a thermal treatment in a controlled atmosphere. The fully inorganic architecture ensures superior mechanical robustness and optimal chemical stability in organic solvents and aqueous solutions. The versatility of the fabrication process broadens the possibility of optimizing this strategy and extending it to other nanostructured systems for designed applications, such as active components of wearable health monitors or biomedical devices.

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“…The values obtained here are similar to those obtained before in samples with equal amount of Sn excess. 26 The lengthening of the PL lifetime that results from increase in the annealing temperature is related to the elimination of -OH groups on the SnO 2 NCs surface. In a linear excitation regime, the PL intensity can be obtained from the following equation:…”

Section: Resultsmentioning

confidence: 99%

Improved sensitization efficiency in Er³⁺ ions and SnO₂ nanocrystals co-doped silica thin films

Zhang

Lin

et al. 2015

Phys. Chem. Chem. Phys.

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Er(3+) ions and SnO2 nanocrystals co-doped silica thin films are prepared by an improved sol-gel spin-coating method. With increase in annealing temperature, the related 1.54 μm characteristic emission intensity from Er(3+) ions is obviously enhanced by more than two orders of magnitude via SnO2 nanocrystals size control to boost the sensitization efficiency. Quantitative studies of steady-state spectroscopic data and fluorescence decay curves demonstrate that the related sensitization efficiency via size-tunable nanocrystals is increased from 0.14% to 1.3%. This improved sensitization efficiency is achieved by doping some of the Er(3+) ions into the SnO2 inner sites at a high annealing temperature, as revealed by high-resolution TEM, X-ray diffraction patterns and elemental mapping technique. Different sensitization mechanisms are also discussed separately according to the selective photoluminescence excitation measurements. All these results have not only explained the greatly improved sensitization efficiency resulting from SnO2 nanocrystals but also indicated that the development of Er(3+) ions and SnO2 nanocrystals co-doped silica thin films could result in promising high-performance near-infrared luminous materials using broadband UV pumping.

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Confined diffusion of erbium excitations inSnO2nanoparticles embedded in silica: A time-resolved infrared luminescence study

Cited by 17 publications

References 28 publications

Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Fully inorganic oxide-in-oxide ultraviolet nanocrystal light emitting devices

Improved sensitization efficiency in Er³⁺ ions and SnO₂ nanocrystals co-doped silica thin films

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Confined diffusion of erbium excitations inSnO2nanoparticles embedded in silica: A time-resolved infrared luminescence study

Cited by 17 publications

References 28 publications

Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Fully inorganic oxide-in-oxide ultraviolet nanocrystal light emitting devices

Improved sensitization efficiency in Er3+ ions and SnO2 nanocrystals co-doped silica thin films

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Product

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Improved sensitization efficiency in Er³⁺ ions and SnO₂ nanocrystals co-doped silica thin films