Emission tunability and local environment in europium-doped OH−-free calcium aluminosilicate glasses for artificial lighting applications

Farias, Aline M.; Sandrini, Marcelo; Viana, José Renato Marques; Baesso, Mauro Luciano; Bento, A. C.; Rohling, J. H.; Guyot, Y.; Ligny, Dominique de; Nunes, L.A.O.; Gandra, F. G.; Sampaio, J.A.; Lima, S.M.; Andrade, L.H.C.; Medina, A. N.

doi:10.1016/j.matchemphys.2015.03.002

Cited by 26 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is a strong link between the optical basicity parameter and the position of the Eu 2+ luminescence band and the trend that we identify in Figure 7 for phosphate glasses matches that observed for other glass compositions (borate [5] and silicate glasses [8]).…”

Section: Discussionsupporting

confidence: 84%

“…This should also lead to a redshift. Farias and coauthors [8] verified that by increasing silica concentration (and in turn, by changing the optical basicity) there is a promotion of the Eu 3+ -> Eu 2+ conversion and a subsequent shift of the Eu 2+ emission band toward red. In our study we observed that Ntreatment in glassy carbon crucible enhances the presence of the reduced species, and it influences the position of the Eu 2+ luminescence.…”

Section: Discussionmentioning

confidence: 92%

“…Previous studies on borophosphate, boroaluminate, and boroaluminosilicate glasses [3][4][5] shown that the optical basicity of the glasses affects the Eu oxidation state (higher the optical basicity, higher is the amount of oxidized species). In turn, it is also possible to correlate the NBO/T parameter (non-bridging oxygen over tetrahedra) to the Eu redox ratio, as described for simplified and multicomponent silicate glasses [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Maximum of the Eu 2+ emission bands as a function of the calculated optical basicity (). Literature data are reported for comparison for borate[8] and silicate[5] glasses. CIE 1976 chromaticity diagram for the alkali-bearing phosphate glasses synthetized in air (stars) and under NH 3 -flux (circles).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Chemical tunability of europium emission in phosphate glasses

Cicconi

Veber

Ligny

et al. 2017

Journal of Luminescence

Self Cite

View full text Add to dashboard Cite

International audienceIn this study the correlation between bulk chemistry and optical properties for a set of Eu-bearing phosphate glasses, containing different alkali elements, synthetized in air and under NH3 flux, was investigated. The chemistry of the glass strongly influences several properties and the effects of bulk chemistry and synthesis conditions on glass structure and on thermal and optical properties are discussed. In alkali-phosphate glasses studied by absorption and photoluminescence spectroscopy we verified that Eu2+ emission band shifts toward higher wavelengths by substituting the alkali cation (Na

show abstract

Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Chemical tunability of europium emission in phosphate glasses

Cicconi

Veber

Ligny

et al. 2017

Journal of Luminescence

Self Cite

View full text Add to dashboard Cite

show abstract

“…This effect can be explained by the preparation method of the initial glass sample which was conducted under vacuum atmosphere and consequently, europium is mainly under its divalent form. Moreover, the influence of the silicon content on the Eu 2 þ / Eu 3 þ ratio was more deeply investigated XANES [36]. After annealing, the Eu 3 þ peaks drop down while, intensity of Eu 2 þ emission enhanced remarkably and shifted to the lower wavelength (blue-shifted) with increase of heat-treatment duration.…”

Section: Photoluminescencementioning

confidence: 99%

Synthesis and luminescent properties of Eu3+/Eu2+ co-doped calcium aluminosilicate glass–ceramics

Bouchouicha

Panczer

Ligny

et al. 2016

Journal of Luminescence

View full text Add to dashboard Cite

Silicate Glasses

et al. 2019

View full text Add to dashboard Cite

Silicate glasses are important cultural, societal and geological materials. Geologic glasses testify for the igneous activity of the Earth and, for instance, represented important source of tools and ornamental objects during the Paleolithic. Nowadays, silicate glasses are used to build technical materials, such as smartphone screens or glass matrix for stabilizing hazardous radioactive wastes. Therefore, silicate glasses are central to the history of the Earth and of the humanity. The compositional landscape of natural and industrial silicate glasses is vast, with various elements that all influence differently the glass properties and structure. The SiO 4 tetrahedral framework, backbone of silicate glasses, is variously influenced by the introduction of network modifier metal cations or network former aluminium cations. Industrial and geologic silicate glasses further contain multivalent elements (e.g., Fe 2+/3+), rare-earth elements, and volatile elements (H, C, S, Cl, F, I) that play different roles on the glass structure and properties. This chapter proposes to review the link between the structure, the properties and the chemical composition of silicate glasses.

show abstract

Emission tunability and local environment in europium-doped OH−-free calcium aluminosilicate glasses for artificial lighting applications

Cited by 26 publications

References 32 publications

Chemical tunability of europium emission in phosphate glasses

Chemical tunability of europium emission in phosphate glasses

Synthesis and luminescent properties of Eu3+/Eu2+ co-doped calcium aluminosilicate glass–ceramics

Silicate Glasses

Contact Info

Product

Resources

About