Tm/Tb/Eu triple-doped lithium aluminoborate glass for white light generation

Mungra, Mreedula; Steudel, Franziska; Ahrens, B.; Schweizer, Stefan

doi:10.1016/j.jlumin.2017.06.028

Cited by 33 publications

(4 citation statements)

References 27 publications

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“…To overcome this issue, the luminescent Ln 3+ ions are typically applied as dopants in relatively small concentrations embedded within a suitable host lattice. 14 Various oxides, nitrides, fluorides, and ceramics such as borates, 15,16 germanates, 17 and zirconates 18 have been actively investigated as possible host lattices.…”

Section: Introductionmentioning

confidence: 99%

White-light emitting multi-lanthanide terephthalate thin films by atomic/molecular layer deposition

Lastusaari

Karppinen

2023

J. Mater. Chem. C

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Section: Introductionmentioning

confidence: 99%

White-light emitting multi-lanthanide terephthalate thin films by atomic/molecular layer deposition

Lastusaari

Karppinen

2023

J. Mater. Chem. C

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“…Compared with phosphor and single crystal, glass exhibits superior advantages in practicality, like excellent optical transmittance and no need to be cured by epoxy resin or silicone as solid glass, making it a better choice than phosphor in LED lighting application. [ 7,13 ] Furthermore, besides the low cost and mature manufacturing technology of most oxide glass, the convenience of glass to be formed into various shapes enable the availability to be drawn into micro fiber to construct tiny array structure and fulfill long‐distance X‐ray detection, indicating that glass is more suitable than single crystal to be applied in X‐ray detection. Despite these superiorities in practicality, whereas, glass received less attention than phosphor and single crystal in related fields owing to its relatively poor luminescent performance.…”

Section: Introductionmentioning

confidence: 99%

Multicolor Phosphate Glasses for Potential White LED Lighting and X‐Ray Detections

Tian

Shi

Sun

et al. 2022

Laser & Photonics Reviews

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Though widely applied in light-emitting diode (LED) lighting and X-ray detection, respectively, rare-earth ions doped phosphor and scintillating single crystals still face many challenges in practicalities, like aging of package material and difficulty to construct tiny array structure. Using phosphate glass as the host is quite beneficial for solving these problems while enabling distinguished luminescence. Therefore, Eu 3+ and Tb 3+ doped phosphate glasses which, respectively, show strong red/green emissions are researched. Superior thermal stabilities (78.69% and 89.35% emission intensities remain at 150 °C) and high internal quantum efficiencies (87.3% and 68.6%) are found to guarantee the excellent photoluminescence performances. The brilliant X-ray excited luminescence properties are demonstrated by general 19.49% and 34.74% integrated emission intensities of that of commercial Bi 4 Ge 3 O 12 single crystal scintillator with the change of X-ray power. Meanwhile, Tb 3+ doped scintillating fiber is drawn. Finally, excited by 380 nm LED, color manipulation and white light generation are achieved in LEDs with a structure of stacked emitting layers (mainly Eu 3+ and Tb 3+ doped phosphate glasses). Many of the as-constructed white LED's performance parameters are much better than the commercial white LED. These results show that Eu 3+ and Tb 3+ doped phosphate glasses possess promising potential in LED lighting and X-ray detections.

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“…[7] The white light produced by the above methods often encounters some problems, such as low efficacy, reduced lifetime, weak resistance to heat and small rendering index, which reduce the quality of the white light. [8][9][10] Therefore, increasing academic interest has concentrated on the research of pursuing a mono-phase and full-emission material by a near ultraviolet stimulation to overcome the defects of traditional w-LEDs. [11] The unique electron transitions (4f-4f or 4f-5d) in RE 3+ ions can generate in the aggregate spectral cover scope from ultraviolet to infrared.…”

Section: Introductionmentioning

confidence: 99%

Luminescent characteristics of Tm³⁺/Tb³⁺/Eu³⁺ tri-doped Na₅Y₉F₃₂ single crystals for white emission with high thermal stability

Fang¹,

Xiong²,

Zhao³

et al. 2022

Chinese Phys. B

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Using an improved Bridgman method, 0.3 mol%Tm3+/0.6 mol%Tb3+/y mol%Eu3+(y=0, 0.4, 0.6, 0.8) doped Na5Y9F32 single crystals were prepared. The X-ray diffractions, excitation spectra, emission spectra and fluorescence decay curves were used to explore crystal structure and optical performance of the obtained samples. When excited by 362 nm light, the cool white emission was realized from Na5Y9F32 single crystal triply-doped 0.3 mol% Tm3+/0.6 mol% Tb3+/0.8 mol% Eu3+, in which the CIE coordinate was (0.2995, 0.3298) and the correlated color temperature (CCT) was 6586 K. The integrated normalized emission intensity of the tri-doped single crystal at 448 K can keep 62% of that 298 K. The internal quantum yield (QY) was calculated to be ~ 15.16% by integrating spheres. These results suggested that the single crystals tri-doped Tm3+, Tb3+ and Eu3+ions have a promising potential application for white light-emitting diodes (w-LEDs).

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Tm/Tb/Eu triple-doped lithium aluminoborate glass for white light generation

Cited by 33 publications

References 27 publications

White-light emitting multi-lanthanide terephthalate thin films by atomic/molecular layer deposition

White-light emitting multi-lanthanide terephthalate thin films by atomic/molecular layer deposition

Multicolor Phosphate Glasses for Potential White LED Lighting and X‐Ray Detections

Luminescent characteristics of Tm³⁺/Tb³⁺/Eu³⁺ tri-doped Na₅Y₉F₃₂ single crystals for white emission with high thermal stability

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Tm/Tb/Eu triple-doped lithium aluminoborate glass for white light generation

Cited by 33 publications

References 27 publications

White-light emitting multi-lanthanide terephthalate thin films by atomic/molecular layer deposition

White-light emitting multi-lanthanide terephthalate thin films by atomic/molecular layer deposition

Multicolor Phosphate Glasses for Potential White LED Lighting and X‐Ray Detections

Luminescent characteristics of Tm3+/Tb3+/Eu3+ tri-doped Na5Y9F32 single crystals for white emission with high thermal stability

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Product

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Luminescent characteristics of Tm³⁺/Tb³⁺/Eu³⁺ tri-doped Na₅Y₉F₃₂ single crystals for white emission with high thermal stability