Luminescence properties and determination of optimal RE3+(Sm3+, Tb3+and Dy3+) doping levels in the KYP2O7host lattice obtained by combustion synthesis

Watras, Adam; Dereń, P.J.; Pązik, Robert

doi:10.1039/c4nj00451e

Cited by 43 publications

(17 citation statements)

References 19 publications

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“…5a) illustrates a broad charge transfer band centered at 247 nm from 200 nm to 280 nm and a series of sharp lines extended to visible region can be observed by monitoring at 572 nm. The broad band can be ascribed to the charge transfer from WO 4 2− group to Dy 3+ 24 , and the seven sharp lines can be ascribed to f–f transitions of Dy 3+ 4 f configuration, which are 6 H 15/2 → 4 K 13/2 (296 nm), 6 H 15/2 → 4 K 15/2 (322 nm), 6 H 15/2 → 4 M 15/2 (350 nm), 6 H 15/2 → 4 P 3/2 (365 nm), 6 H 15/2 → 4 M 21/2 (387 nm), 6 H 15/2 → 4 G 11/2 (426 nm), and 6 H 15/2 → 4I 15/2 (450 nm), respectively 25 . The excitation spectrum of SrWO 4 : 0.4 mol% Eu 3+ is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

A novel optical thermometry based on the energy transfer from charge transfer band to Eu3+-Dy3+ ions

Wang

et al. 2017

Sci Rep

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Optical thermometry based on the up-conversion intensity ratio of thermally coupled levels of rare earth ions has been widely studied to achieve an inaccessible temperature measurement in submicron scale. In this work, a novel optical temperature sensing strategy based on the energy transfer from charge transfer bands of W-O and Eu-O to Eu3+-Dy3+ ions is proposed. A series of Eu3+/Dy3+ co-doped SrWO4 is synthesized by the conventional high-temperature solid-state method. It is found that the emission spectra, emission intensity ratio of Dy3+ (572 nm) and Eu3+ (615 nm), fluorescence color, lifetime decay curves of Dy3+ (572 nm) and Eu3+ (615 nm), and relative and absolute sensitivities of Eu3+/Dy3+ co-doped SrWO4 are temperature dependent under the 266 nm excitation in the temperature range from 11 K to 529 K. The emission intensity ratio of Dy3+ (572 nm) and Eu3+ (615 nm) ions exhibits exponentially relation to the temperature due to the different energy transfer from the charge transfer bands of W-O and Eu-O to Dy3+ and Eu3+ ions. In this host, the maximum relative sensitivity Sr can be reached at 1.71% K−1, being higher than those previously reported material. It opens a new route to obtain optical thermometry with high sensitivity through using down-conversion fluorescence under ultraviolet excitation.

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Section: Resultsmentioning

confidence: 99%

A novel optical thermometry based on the energy transfer from charge transfer band to Eu3+-Dy3+ ions

Wang

et al. 2017

Sci Rep

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“…In fact, even if the solubility could be improved, since the rare-earth ions (e.g. Er 3+ , Eu 3+ , Ce 3+ ) are optically inactive at high concentrations due to the formation of clusters131415, such a concentration quenching would still be a significant barrier for further improving performance of rare-earth doped Si-based materials. Recently, it was shown that formation of rare-earth silicates (e.g.…”

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confidence: 99%

A novel violet/blue light-emitting device based on Ce2Si2O7

Wang

et al. 2015

Sci Rep

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Rare-earth silicates are highly efficient materials for silicon-based light sources. Here we report a novel light-emitting device based on Ce2Si2O7. Intense violet/blue electroluminescence was observed, with a turn-on voltage of about 13 V. The violet/blue emission is attributed to 4f–5d transitions of the Ce3+ ions in Ce2Si2O7, which are formed by interfacial reaction of CeO2 and Si. Electroluminescence and photoluminescence mechanisms of the Ce2Si2O7 light-emitting device are also discussed.

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“…From linear fit critical radius R 0 was found to be 15.0 Å and 14.2 Å for 300 K and 77 K respectively. It is larger than R 0 found for Sm doped KZnLa(PO 4 ) 2 (10.96 Å) [22] and smaller than that found for Sm doped KYP 2 O 7 (22 Å) [26]. …”

Section: Energy Transfer Between Sm 3+ Ions Has Been First Observed Bmentioning

confidence: 56%

Spectroscopic properties of K4SrSi3O9 doped with Sm3+

Bondzior

Kubiak

Dereń

2016

Journal of Luminescence

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Luminescence properties and determination of optimal RE³⁺(Sm³⁺, Tb³⁺and Dy³⁺) doping levels in the KYP₂O₇host lattice obtained by combustion synthesis

Cited by 43 publications

References 19 publications

A novel optical thermometry based on the energy transfer from charge transfer band to Eu3+-Dy3+ ions

A novel optical thermometry based on the energy transfer from charge transfer band to Eu3+-Dy3+ ions

A novel violet/blue light-emitting device based on Ce2Si2O7

Spectroscopic properties of K4SrSi3O9 doped with Sm3+

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