Synthesis and characterization of advanced functional dysprosium doped Sr2MgSi2O7 nanopowders for white LED application

Jyothi, K.R.; Bhagya, K.R.; Nagabhushana, H.; Hegde, Vinayakprasanna N.; Murugendrappa, M. V.; Prakash, A. P. Gnana; B, Daruka Prasad; Nagabhushana, Nagendra

doi:10.1016/j.physb.2020.412195

Cited by 12 publications

(4 citation statements)

References 33 publications

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“…Therefore, Sr 2 MgSi 2 O 7 has attracted more and more interest and attention in recent years. [21][22][23][24] For example, Tshabalala et al synthesized Sr 2 MgSi 2 O 7 :Tb 3+ , Eu 3+ co-doped phosphor and realized simultaneously the blue and green emissions from Tb 3+ ions and the red emission from Eu 3+ ions, eventually resulting in the white emission; [25] Sahu prepared Sr 2 MgSi 2 O 7 :Dy 3+ and Sr 2 MgSi 2 O 7 :Dy 3+ , R (R = Li, Na and K) and observed near white light emission, moreover, the PL intensity was obviously enhanced through incorporating alkali metal as charge compensator ions. [26] Wang et al synthesized Sr 2 MgSi 2 O 7 :Ce 3+ , Tb 3+ and proved that the phosphor is promising candidate for WLED.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence of green nanophosphors Sr₂MgSi₂O₇ doped with Tb³⁺ under 374-nm excitation*

Mu¹,

Zhang²,

Bian³

et al. 2021

Chinese Phys. B

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A series of Sr2MgSi2O7:Tb3+ nanophosphors is prepared using a high-temperature solid-state reaction. The x-ray diffraction patterns show that the crystal structure of the sample is not significantly affected by Tb3+ ions. However, the images of the scanning electron microscope illustrate that the average size of nanoparticles becomes larger with the increase of Tb3+ concentration. Unlike earlier investigations on down-conversion emission of Tb3+ ion excited by deep ultraviolet light, in this work, the photoluminescence characteristics of Sr2MgSi2O7 nanophosphors doped with different Tb3+ concentrations are analyzed under 374-nm excitations. The intense green emission at 545 nm is observed at an optimal doping concentration of 1.6 mol%. The main reason for the concentration quenching is due to the electric dipole–electric dipole interaction among Tb3+ ions.

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Section: Introductionmentioning

confidence: 99%

Photoluminescence of green nanophosphors Sr₂MgSi₂O₇ doped with Tb³⁺ under 374-nm excitation*

Mu¹,

Zhang²,

Bian³

et al. 2021

Chinese Phys. B

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“…Although the bandgap ( E g ) of SMS is previously studied, 22–24 the span of the value obtained was very large, i.e. , 7.1 vs. 4.41 eV, from the DFT electronic structure calculation and optical bandgap estimation.…”

Section: Resultsmentioning

confidence: 95%

“…Although the bandgap (E g ) of SMS is previously studied, [22][23][24] the span of the value obtained was very large, i.e., 7.1 vs. 4.41 eV, from the DFT electronic structure calculation and optical bandgap estimation. The reason for this significant difference may be due to the differences in calculation methods and synthesis/preparation processes.…”

Section: Bandgap Energymentioning

confidence: 90%

Structure and luminescence properties of single-component melilite Sr₂MgSi₂O₇:Ce/Tb/Sm for n-UV wLEDs

Zheng,

Yue,

Wang

et al. 2023

Dalton Trans.

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“…The above-mentioned characteristics confirm the presence of Mg and Sr in SMSED. 24 − 27 However, these absorption bands almost shift or disappear in the spectra of DRCs, indicating that the SiO 2 and SMSED are involved in the DRCs. In addition, the phase analysis of SMSED and DRCs was conducted by X-ray diffraction measurements, as shown in Figure 1 b,c.…”

Section: Results and Discussionmentioning

confidence: 99%

Efficient Photopolymerization of Dental Resin Composites Using the Photoluminescent Long Afterglow of Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺

Hu,

Xu,

Wang

et al. 2023

ACS Omega

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Dental curing light with blue emission acts as the excitation source for the photopolymerization of the dental composite resin to achieve dental repairing. However, the current repair methods still suffer from a low monomer conversion degree and incomplete resin curing. In this study, novel dental resin composites (DRCs) were prepared by combining Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ (SMSED), a photoluminescent material with a blue long afterglow, and dental resin composites. The curing depth, double bond conversion, elastic modulus, compressive strength, water absorption and solubility, and cytotoxicity were investigated systematically. The results suggest that adding 1 wt % SMSED to dental resin composites can maximize the curing depth and double bond conversion rate of DRCs and reduce its water absorption capacity without affecting the mechanical properties and biological toxicity. This work explores the practical applications of SMSED in dental resin composites, which provides an important reference for further improving the effect of dental caries repair.

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Synthesis and characterization of advanced functional dysprosium doped Sr2MgSi2O7 nanopowders for white LED application

Cited by 12 publications

References 33 publications

Photoluminescence of green nanophosphors Sr₂MgSi₂O₇ doped with Tb³⁺ under 374-nm excitation*

Photoluminescence of green nanophosphors Sr₂MgSi₂O₇ doped with Tb³⁺ under 374-nm excitation*

Structure and luminescence properties of single-component melilite Sr₂MgSi₂O₇:Ce/Tb/Sm for n-UV wLEDs

Efficient Photopolymerization of Dental Resin Composites Using the Photoluminescent Long Afterglow of Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺

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Synthesis and characterization of advanced functional dysprosium doped Sr2MgSi2O7 nanopowders for white LED application

Cited by 12 publications

References 33 publications

Photoluminescence of green nanophosphors Sr2MgSi2O7 doped with Tb3+ under 374-nm excitation*

Photoluminescence of green nanophosphors Sr2MgSi2O7 doped with Tb3+ under 374-nm excitation*

Structure and luminescence properties of single-component melilite Sr2MgSi2O7:Ce/Tb/Sm for n-UV wLEDs

Efficient Photopolymerization of Dental Resin Composites Using the Photoluminescent Long Afterglow of Sr2MgSi2O7:Eu2+,Dy3+

Contact Info

Product

Resources

About

Photoluminescence of green nanophosphors Sr₂MgSi₂O₇ doped with Tb³⁺ under 374-nm excitation*

Photoluminescence of green nanophosphors Sr₂MgSi₂O₇ doped with Tb³⁺ under 374-nm excitation*

Structure and luminescence properties of single-component melilite Sr₂MgSi₂O₇:Ce/Tb/Sm for n-UV wLEDs

Efficient Photopolymerization of Dental Resin Composites Using the Photoluminescent Long Afterglow of Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺