Optical absorption and photoluminescence studies of Eu3+-doped phosphate and fluorophosphate glasses

Babu, S. Surendra; Babu, P. Suresh; Jayasankar, C.K.; Sievers, W.; Tröster, Th.; Wortmann, G.

doi:10.1016/j.jlumin.2006.05.010

Cited by 188 publications

(53 citation statements)

References 43 publications

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“…Europium luminescence spectroscopy is still of interest for symmetry determination of europium(III) complexes in solution, provided that a single complex with a well-defined structure is present in solution. Europium spectra have been used for probing the local structure of the Eu 3+ ion in glasses [182,183,186,221,[621][622][623][624][625][626][627][628][629][630][631][632][633][634][635][636]. It must be realized that many different sites are present in a glass matrix, often with a very wide variation in crystal-field parameters [182,623,624,627,[636][637][638].…”

Section: Magnetic Circular Dichroism (Mcd)mentioning

confidence: 99%

Interpretation of europium(III) spectra

Binnemans

2015

Coordination Chemistry Reviews

2,442

108

1,912

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Section: Magnetic Circular Dichroism (Mcd)mentioning

confidence: 99%

Interpretation of europium(III) spectra

Binnemans

2015

Coordination Chemistry Reviews

2,442

108

1,912

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“…From this figure, we can't observe any vibrational mode for reference sample (RP). This is due to the fact that Raman bands are completely overlapped by the fluorescence background originated from organic matter, metal compouned and rare earth existing in natural phosphate rock (RP) [25][26][27][28][29]. As a result of this overlap, we can't differentiate between the different vibrational modes.…”

Section: Raman Characterizationmentioning

confidence: 99%

Application of Gettering Process on the Improvement of the Structural and Mineralogical Properties of Tunisian Phosphate Rock

Daik¹,

Lajnef²

2016

J Material Sci Eng

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The present study deals with the effects of gettering process on the structural and mineralogical composition of Tunisian phosphate rock. The treated samples were characterized to investigate the variation of physical structure and chemical composition as compared to the reference phosphate rock. The quantitative analysis of the impurities concentration before and after gettering treatment using energy-dispersive (EDX) reveals a significant reduction of impurity concentration (more than 75%) such as Al, Si, S, Na, and Mg. Scanning electron microscopy (SEM) shows that gettering process promoted structural alterations of phosphate rock sample due to fusion of impurities. The XRD patterns show that the chief mineral constituent of treated sample is only fluorapatite, while those in the reference ore were calcite, dolomite, quartz and carbonate-fluorapatite. FT-IR characterization show a disappearance of the bands related to calcite at 714 cm -1 as well as B carbonate situated at 1430 cm -1 , 1458 cm -1 after gettering treatment. This result is in good correlation with Raman analysis.

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“…The oscillator strengths for the observed absorption transitions of all three glass systems are obtained from expressions available in literature [19,20,28]. The experimental and calculated oscillator strengths with and without thermal correction are presented in Table 1.…”

Section: Oscillator Strengths and Judd-ofelt Analysismentioning

confidence: 99%

“…Eu 3+ -doped phosphors are commonly used as red emitting materials for field emission technology and LEDs, which exhibit higher luminescence efficiency compared with other luminous materials [16][17][18][19][20]. Further, Eu 3+ ions have often been used as probes for estimation of local environment around the Ln 3+ ions in different matrices.…”

Section: Introductionmentioning

confidence: 99%