LASER ACTION FROM TERBIUM TRIFLUOROACETYLACETONATE IN <i>p</i>-DIOXANE AND ACETONITRILE AT ROOM TEMPERATURE

Bjorklund, S.; Kellermeyer, G.; Hurt, C. R.; Mcavoy, N.; Filipescu, Nicolae

doi:10.1063/1.1754892

Cited by 64 publications

(19 citation statements)

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“…Among the many research areas of luminescence materials, the study of rare earth doped organic binders (like β-diketones) is growing fast, since it is possible to increase considerably the emission intensity of the compounds due to the so called "antenna effect" and the charge transfer of the system of singular and triplet (T) levels (S) at internal levels of the rare earth ion [1][2][3][4]. In addition, the complexes are mechanically flexible which make them suitable for wearable electronics which can be bent or folded keeping their lighting properties [5]. From these materials, TTA is a very promising luminescent organic-material, showing excellent fluorescence properties on the basis of energy transfer from the organic ligand to the central rare earth ions [6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of luminescent terbium-thenoyltriflouroacetone MOF nanorods for green laser application

et al. 2019

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The metalorganic frameworks (MOFs) with lanthanides ions offer great potential in the optical area because can provide properties of flexibility, low density, low-cost methods of synthesis, and insolubility in water, which give them an advantage over traditional phosphors. In this study, a thenoyltriflouroacetone ligand (TTA) with a Tb 3+ MOF was synthesized (Tb = 10 and 50% mol) and its structural and luminescent properties were analyzed. The metalorganic compound was generated in a simple one-pot reaction from terbium nitrate and 2-thenoyltrifluoroacetone precursors at room temperature. By means of FTIR, it was confirmed the presence of carbon groups, which made possible the terbium ion chelation, and also the Tb-O bonds vibration modes. 1 HNMR results confirm that the complex with 10% mol of Tb 3+ contains three coordinates molecules of TTA and two waters molecules. The powders exhibit rod-like morphology with size about 170 nm of diameter and a length about 2 μm; the rod-like nature of powders was confirmed by SEM and TEM analyses. By XRD it was concluded that at higher terbium concentration (TTA-50Tb sample) higher the crystallite size and crystallinity, in fact the TTA-10Tb sample shows a partial-amorphous nature. By photoluminescence analyses, the 5 D4→ 7 FJ (J = 3, 4, 5 and 6) emissions were recorded for both synthesized samples (λexc = 376 nm). Furthermore, it was observed that the emission intensity was enhanced in a factor of 3.5 for the TTA-50Tb. The energy transfer efficiency from TTA to Tb 3+ (antenna effect) was 0.984 for TTA-10Tb and 0.993 for TTA-50Tb. Decay time analyses indicate effective lifetime of 1.45 and 1.60 m s for the samples doped at 10 and 50%, respectively, indicating that the forbidden transition rules are stronger at higher crystallinity. The integrated intensities of the 5 D4 → 7 F5 (green at 541 nm) and 5 D4 → 7 F6 (blue at 486 nm) emissions and their intensity ratios IG/IB upon 376 nm excitation have been evaluated for TTA-10Tb andTTA-50Tb samples. The CIE1931 color of the MOFs excited at 376 nm attains a higher green color purity by increasing the terbium concentration. This is in concordance with the increased IG/IB ratio up for the TTA-10Tb and TTA-50Tb samples. Thus, the TTA-50Tb sample exhibits a green color purity of 67.94% with chromaticity coordinates (0.30, 0.57), being very close to those (0.29, 0.60) of European Broadcasting Union illuminant green. This interesting feature of the TTA-50Tb sample, together with an experimental branching ratio of 61.3% for the 5 D4 → 7 F5 green emission, highlights its capability as solid state green laser pumped by GaN (376 nm) LEDs.

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Section: Introductionmentioning

confidence: 99%

Synthesis of luminescent terbium-thenoyltriflouroacetone MOF nanorods for green laser application

et al. 2019

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“…However, probably due to small absorption cross section value for the pumping transition, only few communications on lasing in Tb 3+ activated solids are known. The first terbium laser emitting at 547 nm was reported by Bjørklund et al already in 1967 [10]. Terbium was in liquid form of a 2.5 mM solution of terbium-chelate.…”

Section: Introductionmentioning

confidence: 99%

Temperature and concentration quenching of Tb3+ emissions in Y4Al2O9 crystals

Boruc

Fetliński

Kaczkan

et al. 2012

Journal of Alloys and Compounds

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“…A theoretical fits to Eq. (7) for the W BT are also shown in the figure. With the assumption that the backward energy transfer process occurs only through PAT, the hω = 596cm −1 is derived from the fitting under a condition of ∆E = 4671cm −1 , which is the energy gap between the Tb 3+ : 5 3.4 Upconversion properties of the Tb 3+ -Yb 3+ co-doped fluorophosphate glass Table 1 shows the cooperative energy transfer efficiency (η CET ), the backward energy transfer efficiency (η BT ) and the phonon energy (hω) of Tb 3+ -Yb 3+ co-doped fluorophosphate glass with our previous results of borosilicate glass for comparison. The η CET of fluorophosphate glass is lower than that of the borosilicate glass.…”

Section: Temperature Dependence Of the Lifetime And Backward Energy Tmentioning

confidence: 99%

“…The green (0.54 µm) laser operation of this transition was reported in 1967. 5 1,8,9 In this process two excited Yb 3+ simultaneously transfer their energy to a Tb 3+ , thus Tb 3+ can be excited to the 5 D 4 level. In our previous work, spectroscopic properties of Tb 3+ -Yb 3+ co-doped borosilicate glasses have been investigated for green lasers and amplifiers.…”

Section: Introductionmentioning

confidence: 99%

Visible emission of Tb³⁺-Yb³⁺co-doped fluorophosphate glasses

et al. 2008

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Visible lasers and amplifiers have potential applications in the fields of optical data storage, spectroscopy, biomedical and optical local area networks. In this study, Tb 3+ -Yb 3+ co-doped fluorophosphate glasses were synthesized and properties of the visible emission at 0.54 µm were investigated. A upconversion excitation efficiency from Yb 3+ to Tb 3+ was studied by evaluations of a cooperative energy transfer efficiency from Yb 3+ to Tb 3+ (η CET ) and a back-transfer efficiency from Tb 3+ to Yb 3+ (η BT ) which give positive and negative contribution to upconversion excitation, respectively. The η CET was as high as 25 %, and the η BT was less than 1 % in the fluorophosphate glass. This indicates that Tb 3+ -Yb 3+ co-doped fluorophosphate glass is promising as new laser and gain media in the 0.54 µm band.

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LASER ACTION FROM TERBIUM TRIFLUOROACETYLACETONATE IN p-DIOXANE AND ACETONITRILE AT ROOM TEMPERATURE

Abstract: Laser activity has been obtained from terbium tris (1, 1, 1-trifluoroacetylacetonate) at room temperature in a liquid solution in acetonitrile and in p-dioxane. Threshold pumping energy is about 1700 J. Characteristic line narrowing, spiking and beam collimation was exhibited.

Cited by 64 publications

References 4 publications

Synthesis of luminescent terbium-thenoyltriflouroacetone MOF nanorods for green laser application

Synthesis of luminescent terbium-thenoyltriflouroacetone MOF nanorods for green laser application

Temperature and concentration quenching of Tb3+ emissions in Y4Al2O9 crystals

Visible emission of Tb³⁺-Yb³⁺co-doped fluorophosphate glasses

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LASER ACTION FROM TERBIUM TRIFLUOROACETYLACETONATE IN p-DIOXANE AND ACETONITRILE AT ROOM TEMPERATURE

Abstract: Laser activity has been obtained from terbium tris (1, 1, 1-trifluoroacetylacetonate) at room temperature in a liquid solution in acetonitrile and in p-dioxane. Threshold pumping energy is about 1700 J. Characteristic line narrowing, spiking and beam collimation was exhibited.

Cited by 64 publications

References 4 publications

Synthesis of luminescent terbium-thenoyltriflouroacetone MOF nanorods for green laser application

Synthesis of luminescent terbium-thenoyltriflouroacetone MOF nanorods for green laser application

Temperature and concentration quenching of Tb3+ emissions in Y4Al2O9 crystals

Visible emission of Tb3+-Yb3+co-doped fluorophosphate glasses

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Visible emission of Tb³⁺-Yb³⁺co-doped fluorophosphate glasses