Pulsed laser deposition of a ZnO:Eu3+ thin film: Study of the luminescence and surface state under electron beam irradiation

Hasabeldaim, E.H.H.; Ntwaeaborwa, O.M.; Kroon, R.E.; Coetsee, E.; Swart, H.C.

doi:10.1016/j.apsusc.2019.144281

Cited by 23 publications

(7 citation statements)

References 41 publications

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“…The Zn 2p peaks are identified at 1021 and 1044 eV corresponding to the doublet of Zn 2p (Zn 2p 3/2 and Zn 2p 1/2 and their exact binding energy values are noted in the figure). These doublets maintained the intensity ratios of 2:1 and the binding energy difference was observed as 23 eV which matches with the reported values of zinc peaks in zinc oxide samples [4] , [10] , [28] . In the case of cobalt high-resolution spectra, according to the increase in Co 2 O 3 concentration, the spectra appeared with lesser noise.…”

Section: Resultssupporting

confidence: 90%

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

Kanakkillam

Krishnan

Avellaneda

et al. 2020

Materials Today: Proceedings

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Highlights ZnO:Co 2 O 3 nanocomposites by pulsed laser irradiation in water. Morphology was modified by laser irradiation and Co 2 O 3 content. Elemental composition and their chemical states were confirmed by XPS. Nanocomposites showed higher visible light absorption compared to ZnO. Thin films of the ZnO:Co 2 O 3 nanocomposites showed visible light photocatalysis.

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Section: Resultssupporting

confidence: 90%

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

Kanakkillam

Krishnan

Avellaneda

et al. 2020

Materials Today: Proceedings

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“…As a result, it was further revealed from the results of XPS analysis that the MIP shell was successfully encapsulated onto the surface of SiO 2 @Y 2 O 3 :(Eu 3+ ,Tb 3+ ). What is more, we found that the binding energy of all these elements did not change, according to information described in previous publications, [23,24] indicating no reciprocal binding reaction among each element of phosphor and silica.…”

Section: Xps Characterizationsupporting

confidence: 83%

Fluorescence detection of carbofuran in aqueous extracts based on dual‐emission SiO₂@Y₂O₃:(Eu³⁺,Tb³⁺)@MIP core‐shell structural nanoparticles

et al. 2022

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A novel double-windows fluorescence sensor for carbofuran (CF) detection was successfully developed based on rare-earth Eu,Tb-doped Y 2 O 3 @SiO 2 -based molecularly imprinted nanoparticles (MINs) with a multilayer core-shell structure. The recognition process of the MINs for CF was fairly fast and needed only $8 min to reach a dynamic equilibrium. Interestingly, one fluorescence attenuation window was found with an increase in CF concentration (Q) from 0.1 to 10 μg ml À1 and with a limit of detection (LOD) of 0.04 μg ml À1 at 544 nm belonging to the Tb 3+ emission, as well as another fluorescence enhanced window within the CF concentration range 10-100 μg ml À1 (LOD = 4 μg ml À1 ) at 617 nm of Eu 3+ emission in the dispersed rare-earth-doped MIN colloidal aqueous solution. Luminescence resonance energy transfer from CF to Eu 3+ and an inner filter effect of CF towards Tb 3+ , as well from the two independent detection windows were clearly observed simultaneously. The competition experiment displayed hardly any marked interference during detection of CF following addition of its analogues (carbaryl, isoprocarb, aldicarb, methomyl, and etofenprox). Moreover, the MINs could also be applied to accurately detect CF in rhubarb and wolfberry samples with recoveries of 85.7-92.2%. This sensing system has high specific recognition and a wide detection range for CF and provides new opportunities for pesticide detection.

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“…The difference between the binding energies of Eu 3d 3/2 and Eu 3d 5/2 for all alkali metal ion-contained phosphors is 29.9 eV, irrespective of the alkali metal ions used. This con rms that Eu ions in Ca 2.82 (PO 4 ) 2 :0.09Eu 3+ , 0.09M + phosphors exist as Eu 3+ ions[42,43].…”

supporting

confidence: 69%

“…2 :0.09Eu 3+ , 0.09M + (M = Li, Na, and K) phosphors are obtained, as shown in Fig.7. The binding energies of Eu 3d 3/2 peaks for Ca 2.82 (PO 4 ) 2 :0.09Eu 3+ phosphor and Li + -, Na + -, and K + -doped phosphors are 1164.9, 1165.1, 1164.9, and 1164.7 eV, respectively, and those of Eu 3d 5/2 are 1135.0, 1135.2, 1135.0, and 1134.8 eV, respectively[42,43].…”

mentioning

confidence: 95%

Photoluminescence Optimization of Ca3(PO4)2:Eu3+ Phosphors By Crystallinity Improvement And Charge Compensation

Kim¹,

Pi²,

Jung³

et al. 2021

Preprint

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In this study, in order to improve the photoluminescence properties of Ca3(PO4)2:Eu3+ phosphors, alkali metal ions (Li+, Na+, and K+) were doped into the Ca2.91(PO4)2:Eu3+ phosphors, and the effects of alkali metal ions on the structural and optical properties were investigated. The alkali metal ions significantly enhanced the emission intensity and improved the emission color quality because they induced the charge balance, improved the crystalline quality, and stabilized the crystal structure, namely, the alkali metal ions in Ca3(PO4)2:Tb3+ acted as both charge compensators and fluxes. Of the alkali metal ions used, Li+ was an optimal cation to improve the emission intensity and color purity. The Ca2.82(PO4)2:0.09Eu3+, 0.09Li+ phosphor showed a 40% stronger red emission intensity than that of the Ca2.91(PO4)2:0.09Eu3+ phosphor. We demonstrate that incorporating alkali metal ions, especially Li+, is important to improve the emission intensity and color purity.

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Pulsed laser deposition of a ZnO:Eu3+ thin film: Study of the luminescence and surface state under electron beam irradiation

Cited by 23 publications

References 41 publications

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

Fluorescence detection of carbofuran in aqueous extracts based on dual‐emission SiO₂@Y₂O₃:(Eu³⁺,Tb³⁺)@MIP core‐shell structural nanoparticles

Photoluminescence Optimization of Ca3(PO4)2:Eu3+ Phosphors By Crystallinity Improvement And Charge Compensation

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Pulsed laser deposition of a ZnO:Eu3+ thin film: Study of the luminescence and surface state under electron beam irradiation

Cited by 23 publications

References 41 publications

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

Fluorescence detection of carbofuran in aqueous extracts based on dual‐emission SiO2@Y2O3:(Eu3+,Tb3+)@MIP core‐shell structural nanoparticles

Photoluminescence Optimization of Ca3(PO4)2:Eu3+ Phosphors By Crystallinity Improvement And Charge Compensation

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Fluorescence detection of carbofuran in aqueous extracts based on dual‐emission SiO₂@Y₂O₃:(Eu³⁺,Tb³⁺)@MIP core‐shell structural nanoparticles