Tm3+/Ho3+/Yb3+ codoped tellurite glass for multicolor emission – Structure, thermal stability and spectroscopic properties

Peng, Shengxi; Yang, Fengjing; Wu, Libo; Qi, Yawei; Zheng, Shichao; Yin, Deshun; Wang, Xunsi; Zhou, Yaxun

doi:10.1016/j.jallcom.2014.04.108

Cited by 20 publications

(3 citation statements)

References 38 publications

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“…The lower cooling rate results in the phenomenon that Nb–O–Nb and Nb–O stretches have lower intensity and the proportion of nonbridging oxygen increases in the network. Because Nb is pentavalent, and La is trivalent, Zr is tetravalent, nonbridging oxygen exists to satisfy the valence compensation . The rapid cooling rate in the solidification is a key factor to obtain the amorphous NLZ sample with better structural integrity.…”

Section: Resultsmentioning

confidence: 91%

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er³⁺/Yb³⁺ Fabricated by Aerodynamic Levitation Method

et al. 2015

J. Am. Ceram. Soc.

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82x)NbO 2.5 -17.4LaO 1.5 -xZrO 2 (NLZ) (x = 7.5, 10, 12.5, 15, 17.5, and 20) bulk glasses codoped with Er 3+ /Yb 3+ were successfully fabricated by aerodynamic levitation method for the first time. The structure, thermal stability, and luminescent properties of the samples were investigated systemically by XRD, differential scanning calorimetry, and upconversion spectra. Under 980 nm laser excitation, all samples exhibited green and red upconversion emissions centered at 531, 546, and 674 nm. Results showed that the sample with 15 mol% ZrO 2 obtained the most efficient upconversion luminescence and good thermal stability with the glass-transition temperature as high as 743°C. The effect of the addition of ZrO 2 on the structure behavior and the phonon density in the glass was investigated by Raman spectra, which are the key factors for the upconversion luminescence intensity. P. Lucas-contributing editor Manuscript No. 35647.

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Section: Resultsmentioning

confidence: 91%

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er³⁺/Yb³⁺ Fabricated by Aerodynamic Levitation Method

et al. 2015

J. Am. Ceram. Soc.

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“…Nevertheless, excessive amounts lead to cross relaxation between the same Yb 3+ pairs. In this regard, in numerous studies the effect of Yb 3+ sensitizer on the PL emission spectra of different glass matrices was investigated [138,141,149,157]. For instance, Vahedigharehchopogh et al [141] observed that increasing Yb 3+ concentration from 0.5 to 2.0 mol% in Ho 3+ /Tm 3+ /Yb 3+ triply-doped tellurite glasses enhance the emission intensity of all three bands centered at 475, 545 and 659 nm.…”

Section: White Light Emission Through Up-conversion Processmentioning

confidence: 99%

Recent progress in lanthanide-doped luminescent glasses for solid-state lighting applications—a review

Erol

Vahedigharehchopogh

Kıbrıslı

et al. 2021

J. Phys.: Condens. Matter

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Nowadays, solid-state white light-emitting diodes (wLEDs) have attracted remarkable attention for applications in general lighting, displays and numerous electronical devices due to their eminent efficiency, longer lifetime and higher mechanical durability compared to traditional incandescent and fluorescent lights. In current commercial wLEDs, a combination of Y 3 Al 5 O 12 :Ce 3+ yellow phosphor with blue LED chip and epoxy resin is generally used to generate white light. However, there are some considerable frailties mostly originated from phosphor and resin such as, degradation upon heat, and moisture, inhomogeneous spectral distribution, and poor color rendering capability. Therefore, phosphor embedded glass-ceramics have been developed as a promising way to obtain durable solid-state lighting devices. However, in these methods, there is a greater risk of reactions between the phosphor material and the glass host. At this point, lanthanide-doped luminescent glasses have drawn great attention as a new generation phosphor and/or epoxy free white-light-emitting source owing to their favorable properties including high thermal and chemical stability, high transparency, and easy manufacturing process. This review article aims to comprehensively summarize the recent progress in singly (i.e., Dy 3+ , Eu 2+ ), doubly (i.e.

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“…Another way to obtain white emission is up-conversion mechanism, where an excitation energy from infrared region is converted to visible emission. For this propose white light emission from glassy materials have been obtained by use of RE ions, such as Yb 3+ /Er 3+ /Tm 3+ , Yb 3+ /Tm 3+ /Tb 3+ and Yb 3+ /Tm 3+ /Ho 3+ codoped systems [10][11][12][13][14][15]. Upconverting glass hosts should posses relatively low phonon energy which makes it possible to obtain high upconversion luminescence efficiency.…”

Section: Introductionmentioning

confidence: 99%

Multicolor up-conversion emission in tellurite glasses co-doped with rare earth ions for white LED applications

et al. 2014

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In the article the glass with molar composition of 75TeO 2 -20ZnO-5Na 2 O co-doped with Yb 3+ /Tm 3+ /Ho 3+ ions was fabricated by typical melt-quenching technique. Multicolour up-conversion emission at the wavelengths of 479 nm (blue), 546 nm (green) and 650 nm (red) corresponding to transitions 1 G 4 → 3 H 6 (Tm 3+ ), 5 F 4 → 5 I 8 (Ho 3+ ) and 5 F 5 → 5 I 8 (Ho 3+ ), respectively have been observed under infrared excitation (λ exc = 980 nm) at room temperature. Influence of molar ratio of active ions on the colour coordinates (CIE-1931) have been investigated.

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Tm3+/Ho3+/Yb3+ codoped tellurite glass for multicolor emission – Structure, thermal stability and spectroscopic properties

Cited by 20 publications

References 38 publications

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er³⁺/Yb³⁺ Fabricated by Aerodynamic Levitation Method

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er³⁺/Yb³⁺ Fabricated by Aerodynamic Levitation Method

Recent progress in lanthanide-doped luminescent glasses for solid-state lighting applications—a review

Multicolor up-conversion emission in tellurite glasses co-doped with rare earth ions for white LED applications

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Tm3+/Ho3+/Yb3+ codoped tellurite glass for multicolor emission – Structure, thermal stability and spectroscopic properties

Cited by 20 publications

References 38 publications

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er3+/Yb3+ Fabricated by Aerodynamic Levitation Method

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er3+/Yb3+ Fabricated by Aerodynamic Levitation Method

Recent progress in lanthanide-doped luminescent glasses for solid-state lighting applications—a review

Multicolor up-conversion emission in tellurite glasses co-doped with rare earth ions for white LED applications

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Product

Resources

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An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er³⁺/Yb³⁺ Fabricated by Aerodynamic Levitation Method

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er³⁺/Yb³⁺ Fabricated by Aerodynamic Levitation Method