Structure, properties and luminescence mechanism of Sr1.93B2O5:0.07Eu3+ red phosphors

Liu, Quansheng; Zheng, Zhaoyang; Zhang, Xiyan; Bai, Zhiyong

doi:10.1016/j.jallcom.2014.12.142

Cited by 25 publications

(7 citation statements)

References 39 publications

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“…1 Currently, the commercially available WLEDs are based on a blue chip with yellow phosphor (YAG : Ce). 3,4 However, the efficiency and thermal stability of the currently used red phosphor is relatively low compared to the other two components. 2 One alternative approach to obtain white light is using a near-UV (NUV) InGaN-based LED chip coated with blue/green/red tricolor phosphors.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd₅P₂O₁₃ : Eu³⁺ phosphors for white LEDs

et al. 2015

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A series of LiGd 5 P 2 O 13 : Eu 3+ phosphors with a red-emitting band centered at 622 nm were synthesized by a high temperature solid-state reaction method. Structure-luminescence correlation, concentration quenching and thermal stability of the LiGd 5 P 2 O 13 : Eu 3+ phosphors were studied combined with XRD, PL/PLE spectra as well as temperature-dependent PL and decay curves. The optimum concentration of Eu 3+ doped in the LiGd 5 P 2 O 13 is 20 mol%, and the corresponding concentration quenching mechanism is found to be via dipole/quadrupole-quadrupole interactions. Intensity parameters (U 2 and U 4 ) andvarious radiative properties such as transition rates (A), branching ratios (b) and stimulated emission cross-section (d e ) were calculated using the Judd-Ofelt theory. LiGd 5 P 2 O 13 : Eu 3+ exhibited good thermal stability and its emission intensity decreased slightly at temperature above 150 C. The CIE coordinates of LiGd 5 P 2 O 13 : 0.20Eu 3+ (0.644, 0.339) are very close to s-RGB standard red (0.640, 0.330), and the corresponding quantum efficiency is 46.5%. The results show that LGPO : Eu 3+ may be considered as a potential red emitting phosphor for NUV/blue pumped WLEDs.

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Section: Introductionmentioning

confidence: 99%

Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd₅P₂O₁₃ : Eu³⁺ phosphors for white LEDs

et al. 2015

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“…13 However, there exist some drawbacks in its practical application, such as poor color rendering index (R a < 80), and the high correlated color temperature (CCT $ 7750 K) owing to the lack of a red spectral component in the visible region. 4,14 In order to obtain highefficiency WLEDs with appropriate CCT, high CRI and better color stability, alternative method is proposed, which combines the near-ultraviolet (n-UV) LED chips with a mixture of red, green and blue emitting phosphors. 9 There are some commercial BaMgAl 10 The search for nontoxic and highly efficient host materials has attracted researchers.…”

Section: 12mentioning

confidence: 99%

Novel Eu³⁺-activated Ba₂Y₅B₅O₁₇ red-emitting phosphors for white LEDs: high color purity, high quantum efficiency and excellent thermal stability

et al. 2018

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“…So far, the potential of various host materials for phosphors has been investigated, such as silicate, aluminate, phosphate, nitride, and borate . Among them, borate has drawn much attention since they merit in superior stability, low cost, and low synthesis temperature . In particular, Ca 3 B 2 O 6 phosphors doped with lanthanide ions were reported to exhibit good luminescence characteristics .…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11][12][13] Among them, borate has drawn much attention since they merit in superior stability, low cost, and low synthesis temperature. [14][15][16] In particular, Ca 3 B 2 O 6 phosphors doped with lanthanide ions were reported to exhibit good luminescence characteristics. [17][18][19][20][21][22] Mohit Manhas et al investigated photoluminescence properties of Ca 3 B 2 O 6 :Tb 3+ nanophosphors.…”

Section: Introductionmentioning

confidence: 99%

Dy and Eu activated Ca₃B₂O₆ phosphors for near ultraviolet‐based light‐emitting diodes

et al. 2018

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The Dy‐ and Eu‐activated Ca3B2O6 phosphors were synthesized by a high‐temperature solid‐state reaction technique and their structural and luminescent properties were investigated. The phosphors are characterized by X‐ray diffraction, photoluminescence spectra, and Commission International de I'Eclairage (CIE) chromaticity coordinates. It is found that the charge compensator Na+ plays an important role in modifying the emission spectral profiles of Dy and Eu ions in the phosphors. The ratio of the emission located at the yellow wavelength portion to that located at the blue wavelength region of the Dy3+ ions can be apparently tuned by changing the Na+ content. The luminescence intensity of the phosphors can be enhanced with introducing Na+ ions as well. The emission colors of Dy/Eu codoped phosphors change from blue to white and successfully acquire the superior white light emission (x = 0.330, y = 0.329) by appropriately tuning the Na+/Dy3+ content and the excitation wavelength. The energy transfer process from Eu2+ to Dy3+ and Eu3+ occurs in the Dy/Eu codoped phosphors, providing a further approach to modify the emission spectral profile of the examined phosphors. The phosphors presented here have promising applications in the fields of light‐emitting diodes.

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Structure, properties and luminescence mechanism of Sr1.93B2O5:0.07Eu3+ red phosphors

Cited by 25 publications

References 39 publications

Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd₅P₂O₁₃ : Eu³⁺ phosphors for white LEDs

Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd₅P₂O₁₃ : Eu³⁺ phosphors for white LEDs

Novel Eu³⁺-activated Ba₂Y₅B₅O₁₇ red-emitting phosphors for white LEDs: high color purity, high quantum efficiency and excellent thermal stability

Dy and Eu activated Ca₃B₂O₆ phosphors for near ultraviolet‐based light‐emitting diodes

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Structure, properties and luminescence mechanism of Sr1.93B2O5:0.07Eu3+ red phosphors

Cited by 25 publications

References 39 publications

Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd5P2O13 : Eu3+ phosphors for white LEDs

Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd5P2O13 : Eu3+ phosphors for white LEDs

Novel Eu3+-activated Ba2Y5B5O17 red-emitting phosphors for white LEDs: high color purity, high quantum efficiency and excellent thermal stability

Dy and Eu activated Ca3B2O6 phosphors for near ultraviolet‐based light‐emitting diodes

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Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd₅P₂O₁₃ : Eu³⁺ phosphors for white LEDs

Synthesis, photoluminescence and Judd–Ofelt analysis of red LiGd₅P₂O₁₃ : Eu³⁺ phosphors for white LEDs

Novel Eu³⁺-activated Ba₂Y₅B₅O₁₇ red-emitting phosphors for white LEDs: high color purity, high quantum efficiency and excellent thermal stability

Dy and Eu activated Ca₃B₂O₆ phosphors for near ultraviolet‐based light‐emitting diodes