Control of silver clustering for broadband Er3+ luminescence sensitization in Er and Ag co-implanted silica

Trave, Enrico; Back, Michele; Cattaruzza, Elti; Gonella, Francesco; Enrichi, Francesco; Cesca, Tiziana; Kalinic, Boris; Scian, Carlo; Bello, Valentina; Maurizio, C.; Mattei, Giovanni

doi:10.1016/j.jlumin.2018.01.025

Cited by 29 publications

(21 citation statements)

References 71 publications

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“…In the last two decades, broadband and efficient sensitization of Er 3+ ions by silicon [ 17 , 18 , 19 ] or silver aggregates [ 20 , 21 , 22 , 23 , 24 , 25 ] have been reported, showing that multimers and nanoaggregates can act as energy-transfer centres to the RE 3+ ions. More recently, Ag sensitization was successfully observed in Tb 3+ [ 26 , 27 , 28 ] and Tb 3+ /Yb 3+ [ 29 ] co-doped materials.…”

Section: Introductionmentioning

confidence: 99%

Ag-Sensitized Yb3+ Emission in Glass-Ceramics

et al. 2018

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Rare earth doped materials play a very important role in the development of many photonic devices, such as optical amplifiers and lasers, frequency converters, solar concentrators, up to quantum information storage devices. Among the rare earth ions, ytterbium is certainly one of the most frequently investigated and employed. The absorption and emission properties of Yb3+ ions are related to transitions between the two energy levels 2F7/2 (ground state) and 2F5/2 (excited state), involving photon energies around 1.26 eV (980 nm). Therefore, Yb3+ cannot directly absorb UV or visible light, and it is often used in combination with other rare earth ions like Pr3+, Tm3+, and Tb3+, which act as energy transfer centres. Nevertheless, even in those co-doped materials, the absorption bandwidth can be limited, and the cross section is small. In this paper, we report a broadband and efficient energy transfer process between Ag dimers/multimers and Yb3+ ions, which results in a strong PL emission around 980 nm under UV light excitation. Silica-zirconia (70% SiO2-30% ZrO2) glass-ceramic films doped by 4 mol.% Yb3+ ions and an additional 5 mol.% of Na2O were prepared by sol-gel synthesis followed by a thermal annealing at 1000 °C. Ag introduction was then obtained by ion-exchange in a molten salt bath and the samples were subsequently annealed in air at 430 °C to induce the migration and aggregation of the metal. The structural, compositional, and optical properties were investigated, providing evidence for efficient broadband sensitization of the rare earth ions by energy transfer from Ag dimers/multimers, which could have important applications in different fields, such as PV solar cells and light-emitting near-infrared (NIR) devices.

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Section: Introductionmentioning

confidence: 99%

Ag-Sensitized Yb3+ Emission in Glass-Ceramics

et al. 2018

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“…If on the one hand the uniformity of the nanoparticles is still critical for many families of compounds, on the other hand the ability to control the response of the materials to external stimuli could pave the way for new applications. Lanthanide ions (Ln n + ) are a well-known family of luminescent ions finding applications in a variety of optical fields moving from telecommunications, − lasing, , and lighting , to bioimaging, , nanothermometry, − and anticounterfeiting, , to name a few. In recent years, a lot of interest was gained by the potential of luminescent nanothermometry not only to probe intracellular temperature , or to map the dissipation in microelectronic circuits but also to locally probe phase transition temperatures and to measure in situ thermal gradients in catalytic reactions .…”

Section: Introductionmentioning

confidence: 99%

Lanthanide-Doped Bi₂SiO₅@SiO₂ Core–Shell Upconverting Nanoparticles for Stable Ratiometric Optical Thermometry

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Casagrande

Brondin

et al. 2020

ACS Appl. Nano Mater.

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The development of nanomaterials with high sensitivity to external stimuli such as temperature is critical to investigate the driving force of not only biological processes but also catalytic mechanisms in extreme environments. However, the instability of nano-objects at high temperatures and different environments is a serious drawback limiting often their real use. This is particularly severe in the case of bismuth-based compounds, making the development of highly stable bismuth-based nanosystems a challenge. Here, we report the synthesis of uniform crystalline lanthanide-doped Bi 2 SiO 5 nanoparticles into a silica shell of a controlled thickness (Bi 2 SiO 5 :Ln@SiO 2 ) for the design of a reliable ratiometric optical thermometer stable at high temperatures and extreme acid environments. The fine control of the SiO 2 shell thickness is modeled based on a theoretical and experimental approach. The formation of the Bi 2 SiO 5 single phase is triggered by the local reactivity between Bi 2 O 3 and SiO 2 in the Bi 2 O 3 @SiO 2 system, leading to a double-layered Bi 2 SiO 5 @SiO 2 hollow nanosystem. The potential of the Bi 2 SiO 5 :Ln@SiO 2 nanosystem as a ratiometric nanothermometer is demonstrated for the upconverting Yb−Er couple. The performances were evaluated in the wide range of linearity of the Boltzmann law (280−800 K) showing suitable values of relative sensitivity, temperature uncertainty, and repeatability (R > 99%) not only for biological applications but also to probe the temperature in extreme environments. In fact, the strategy results in an acid-inert thermal probe up to pH < 1 overcoming the weakness of bismuthbased materials to acid environments with promising properties for in situ thermometry of catalytic reactions.

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“…Nevertheless, the long lifetime of the 4 I 13/2 excited state (of the order of milliseconds) makes the Er 3+ emission sensitive to nonradiative recombination and concentrationquenching processes [37,38]. Therefore, the increase of the Er 3+ radiative decay rate is of fundamental importance for improving the luminescence efficiency and, thus, the design of novel photonic devices based on Er-doped materials, including on-chip optical amplifiers [39,40], light-emitting diodes (LEDs) [41], lasers [42,43], and single-photon sources at telecom wavelengths [28,44]. In addition to the technological importance, the mixed electric dipole (ED) and magnetic dipole (MD) transition of the Er 3+ radiative emission makes it an interesting probe for the investigation of the selective electric and magnetic LDOS modification in dielectric nanostructures, which could open up new routes for the control of the radiative properties of quantum emitters by engeneering both ED and MD resonances [5,45].…”

Section: Introductionmentioning

confidence: 99%

All-Dielectric Silicon Nanoslots forEr3+Photoluminescence Enhancement

Kalinic¹,

Cesca²,

Mignuzzi

et al. 2020

Phys. Rev. Applied

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We study, both experimentally and theoretically, the modification of Er 3+ photoluminescence properties in Si dielectric nanoslots. The ultrathin nanoslot (down to 5-nm thickness), filled with Er in SiO 2 , boosts the electric and magnetic local density of states via coherent near-field interaction. We report an experimental 20-fold enhancement of the radiative decay rate with negligible losses. Moreover, via modifying the geometry of the all-dielectric nanoslot, the outcoupling of the emitted radiation to the far field can be strongly improved, without affecting the strong decay-rate enhancement given by the nanoslot structure. Indeed, for a periodic square array of slotted nanopillars an almost one-order-of-magnitude-higher Er 3+ PL intensity is measured with respect to the unpatterned structures. This has a direct impact on the design of more efficient CMOS-compatible light sources operating at telecom wavelengths.

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Control of silver clustering for broadband Er3+ luminescence sensitization in Er and Ag co-implanted silica

Cited by 29 publications

References 71 publications

Ag-Sensitized Yb3+ Emission in Glass-Ceramics

Ag-Sensitized Yb3+ Emission in Glass-Ceramics

Lanthanide-Doped Bi₂SiO₅@SiO₂ Core–Shell Upconverting Nanoparticles for Stable Ratiometric Optical Thermometry

All-Dielectric Silicon Nanoslots forEr3+Photoluminescence Enhancement

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Control of silver clustering for broadband Er3+ luminescence sensitization in Er and Ag co-implanted silica

Cited by 29 publications

References 71 publications

Ag-Sensitized Yb3+ Emission in Glass-Ceramics

Ag-Sensitized Yb3+ Emission in Glass-Ceramics

Lanthanide-Doped Bi2SiO5@SiO2 Core–Shell Upconverting Nanoparticles for Stable Ratiometric Optical Thermometry

All-Dielectric Silicon Nanoslots forEr3+Photoluminescence Enhancement

Contact Info

Product

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Lanthanide-Doped Bi₂SiO₅@SiO₂ Core–Shell Upconverting Nanoparticles for Stable Ratiometric Optical Thermometry