Up-conversion mechanisms in Er3+-doped fluoroindate glasses under 1550 nm excitation for enhancing photocurrent of crystalline silicon solar cell

Castro, Tarcio; Manzani, Danilo; Ribeiro, Sidney J. L.

doi:10.1016/j.jlumin.2018.04.028

Cited by 24 publications

(7 citation statements)

References 38 publications

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“…The Ln 3+ optical properties result from the 4f electronic structure, particularly from the large number of well-defined energy levels, narrow absorption and emission bands, the large energy difference between the absorption and the emission maximum, and the long luminescence lifetimes . The unique properties of upconverting Ln 3+ -doped materials have resulted in the use of these materials in many areas such as solar cells, displays, lasers, pressure or temperature sensors, , security markers, and fingerprint identification . Furthermore, the development of nanotechnology has enabled the sequent applications of new UC materials, particularly in medicine.…”

Section: Introductionmentioning

confidence: 99%

Upconverting SrF₂:Er³⁺ Nanoparticles for Optical Temperature Sensors

Ryszczyńska

Trejgis

Marciniak

et al. 2021

ACS Appl. Nano Mater.

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The upconversion (UC) phenomenon is one of the most frequently investigated in lanthanide ions (Ln 3+ )-doped phosphors. Usually, to obtain UC luminescence, two types of dopants are used: one is a sensitizer, and the other one is an activator, e.g., Yb 3+ /Er 3+ . Exceptional UC luminescence can also be presented by systems doped with one type of Ln 3+ ions, which are characterized by self-sensitization properties, for instance, Er 3+ ions. Herein, the structural and spectroscopic properties of SrF 2 nanoparticles (NPs) doped with Er 3+ ions in concentration from 2.1 to 29.0% were investigated. The SrF 2 :Er 3+ samples, synthesized using the hydrothermal method, were characterized by the crystalline structure and sizes of their formed NPs below 18 nm. The UC emission under 975 and 1532 nm excitations was observed, wherein the most intense luminescence was registered for SrF 2 :11.7% Er 3+ NPs under 975 nm excitation and for SrF 2 :4.7%Er 3+ NPs under 1532 nm excitation. The UC mechanisms were proposed on the basis of the measured dependencies of integral luminescence intensities on the laser power densities and luminescence lifetimes. The thermometric properties of ratiometric luminescent thermometers based on luminescence intensity ratios (LIRs) from 2 H 11/2 and 4 S 3/2 thermally coupled levels in SrF 2 :Er 3+ were evaluated in the 273−373 K temperature range. The interesting temperature dependencies of the UC emission from 4 I 9/2 and 4 I 11/2 states were registered; these have not been previously reported.

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Section: Introductionmentioning

confidence: 99%

Upconverting SrF₂:Er³⁺ Nanoparticles for Optical Temperature Sensors

Ryszczyńska

Trejgis

Marciniak

et al. 2021

ACS Appl. Nano Mater.

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“…For many photonic applications, including laser, optical fiber high density, detector, optical guide, etc., glassy material triggered with rare earth ions has been investigated intensively for long-time research across the globe [1,2]. Tellurite glass has been successful in converting infrared to visible light among the various kinds of oxide glass systems compatible with "Rare Earth" (RE) doping because of its beneficial properties, including rare earth solubility, good chemical durability, wide transmission window, high refractive index, and low phonon energy [3][4].…”

Section: Introductionmentioning

confidence: 99%

“…

A series of a new glass sample has been prepared with glass composition xDy2O3-(10-x) 1,2,3,4,5, and 6 and mol %) have been produced through the traditional melt-quenching approach. The XRD ("X-Ray Diffraction") pattern indicates that the glass system is amorphous by nature.

…”

mentioning

confidence: 99%

Synthesis, Properties, and Structural Studies of Bismuth-Barium Tellurite Glasses Doped with Dy₂O₃

Mujeeb,

Eraiah

2024

J. Phys.: Conf. Ser.

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A series of a new glass sample has been prepared with glass composition xDy2O3-(10-x) Bi2O3-20BaO-70TeO2 (where x=0,1,2,3,4,5, and 6 and mol %) have been produced through the traditional melt-quenching approach. The XRD (“X-Ray Diffraction”) pattern indicates that the glass system is amorphous by nature. The prepared glass system’s density has been examined with Archimedes’ principle, and the associated molar volume was estimated. Dy2O3 increases the density of the glass system, and it is observed that the molar volume is inversely related to the glass density. The absorption spectra from the wavelength range 200nm – 1100nm are applied to assess the glass’s optical properties. The direct and indirect optical band gap were computed using Tauc’s plots from the absorption spectra. The energy gap variation with the concentration of Dy2O3 has been discussed. The refractive index has also been calculated using the energy band gap values. Other physical parameters like electronic polarizability, and dielectric constant molar volume have been calculated. The structural and optical properties were examined via FTIR and RAMAN spectrometers.

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“…Foi reportado na literatura o estudo de conversão ascendente de energia na matriz fluorindato dopada por íon Er 3+ com excitação em 1550 nm, e observou-se emissões na região do visível e na região do infravermelho próximo em aproximadamente 980 nm. Como prova de conceito, este material foi aplicado em célula solar e observou-se que a conversão ascendente de energia pelo íon Er 3+ gerou corrente elétrica na célula solar de silício [13]. Em trabalho semelhante foi observado a geração de corrente elétrica em vidro de telureto dopado com 3% de Er 3+ [145], demonstrando o potencial desses materiais para melhorar a eficiência de células solares.…”

Section: Células Solaresunclassified

“…Dentre os lantanídeos que possuem a capacidade de conversão ascendente de energia podemos citar o íon Er 3+ , que pode absorver fótons de baixa energia, regiões do infravermelho próximo (980 e 1550 nm), com emissão na região do visível (verde e vermelho na região de 520 e 660 nm, respectivamente) e infravermelho próximo (850 -980 nm) [13]. O par Yb 3+ /Er 3+ também é empregado para conversão ascendente de energia.…”

Section: Introductionunclassified

Síntese por pirólise de aerossol e caracterização de molibdato de sódio e ítrio (NaY(MoO>sub<4>/sub<)>sub<2>/sub<) dopados com íons lantanídeos e estudos de conversão de energia

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Luminescent materials doped by lanthanide ions have been widely studied due to their numerous applications in different fields. Among these materials, we can highlight hosts based on molybdates, since they have good chemical stability, high refractive index and low phonon energy. Molybdates in general, with a formula MLn(MoO4)2 (M = alkali metals; Ln = lanthanides), are interesting because they have good solubility for lanthanide ions and, therefore, they are able to receive a large amount of ions without showing luminescence suppression. Thus, this work aimed to synthesize by spray pyrolysis method the host sodium yttrium molybdate (NaY(MoO4)2) doped by lanthanide ions, and the structure and morphology of these materials were characterized, as well as their photoluminescence properties. Materials doped by Eu 3+ were synthesized at three different concentrations, with the aim of using it as a structural probe to study the symmetry site where the ion is inserted in the host, and to evaluate whether the used synthesis method generates materials free of secondary structures. In order to obtain energy upconverting materials, we synthesized NaY(MoO4)2 doped by Er 3+ ions with concentrations ranging from 0.5 to 20% in relation to yttrium (mol/mol). The upconversion mechanisms were evaluated, and thermometry studies were performed on materials doped from 2 to 20% of Er 3+ by the observation of the influence of temperature on the emission intensity of the thermally coupled levels, 2 H11/2 and 4 S3/2, with excitation at 980 nm. NaY(MoO4)2 doped by Pr 3+ ion at a concentration of 1% and codoped by ions (Pr 3+ /Yb 3+ ) with 1% Pr 3+ were also synthesized, varying the concentration of Yb 3+ , to carry out studies of down-conversion process. The materials were obtained with spherical morphology of sizes in the range of 300 -3000 nm with a scheelite-type tetragonal phase structure with space group I41/α. Photoluminescence studies for the Eu 3+ ion indicated a single site of possible symmetry with C2v point group, indicating the absence of spurious phases. Upconversion studies for Er 3+ doped materials with excitation at 980 and 1550 nm showed the involvement of two and three photons, respectively, for the emission mechanism. It was observed that the concentration of Er 3+ ion also influenced the emission spectra profiles. Thermometry studies showed that the materials showed good linearity at temperatures from 213 to 473 K. The down-conversion studies for samples doped by Pr 3+ and Yb 3+ /Pr 3+ ions showed emission in the infrared range (900 -1100 nm) with excitation at 488 nm. It was possible to observe the transfer of energy from the Pr 3+ ions to the Yb 3+ ion. Furthermore, PMMA films were prepared containing the particles of materials codoped with Pr 3+ /Yb 3+ at a Yb 3+ concentrations of 10 and 20%. The films showed emission profiles in the infrared region, with excitation at 488 nm, similar to those observed for only the particles. The used synthesis method showed reproducibility, and the materials obtained showed to be p...

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Up-conversion mechanisms in Er3+-doped fluoroindate glasses under 1550 nm excitation for enhancing photocurrent of crystalline silicon solar cell

Cited by 24 publications

References 38 publications

Upconverting SrF₂:Er³⁺ Nanoparticles for Optical Temperature Sensors

Upconverting SrF₂:Er³⁺ Nanoparticles for Optical Temperature Sensors

Synthesis, Properties, and Structural Studies of Bismuth-Barium Tellurite Glasses Doped with Dy₂O₃

Síntese por pirólise de aerossol e caracterização de molibdato de sódio e ítrio (NaY(MoO>sub<4>/sub<)>sub<2>/sub<) dopados com íons lantanídeos e estudos de conversão de energia

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Up-conversion mechanisms in Er3+-doped fluoroindate glasses under 1550 nm excitation for enhancing photocurrent of crystalline silicon solar cell

Cited by 24 publications

References 38 publications

Upconverting SrF2:Er3+ Nanoparticles for Optical Temperature Sensors

Upconverting SrF2:Er3+ Nanoparticles for Optical Temperature Sensors

Synthesis, Properties, and Structural Studies of Bismuth-Barium Tellurite Glasses Doped with Dy2O3

Síntese por pirólise de aerossol e caracterização de molibdato de sódio e ítrio (NaY(MoO>sub<4>/sub<)>sub<2>/sub<) dopados com íons lantanídeos e estudos de conversão de energia

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Up-conversion mechanisms in Er3+-doped fluoroindate glasses under 1550 nm excitation for enhancing photocurrent of crystalline silicon solar cell

Upconverting SrF₂:Er³⁺ Nanoparticles for Optical Temperature Sensors

Upconverting SrF₂:Er³⁺ Nanoparticles for Optical Temperature Sensors

Synthesis, Properties, and Structural Studies of Bismuth-Barium Tellurite Glasses Doped with Dy₂O₃