Improved photoluminescence properties of a new green SrB2O4:Tb3+ phosphor by charge compensation

Wu, Zhan‐Chao; Wang, Ping; Liu, Jie; Li, Chao; Zhou, Wenhui; Kuang, Shaoping

doi:10.1016/j.materresbull.2012.07.013

Cited by 30 publications

(7 citation statements)

References 14 publications

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“…Contrarily, Li + reduces the luminescent intensity of ZnB 2 O 4 :Tb 3+ . This result is different from that of similar phosphors in previous reports . K + , Na + and Na + ions are the optimal charge compensators for BaB 2 O 4 :Eu 3+ , SrB 2 O 4 :Eu 3+ and SrB 2 O 4 :Tb 3+ , respectively.…”

Section: Resultscontrasting

confidence: 99%

“…This result is different from that of similar phosphors in previous reports . K + , Na + and Na + ions are the optimal charge compensators for BaB 2 O 4 :Eu 3+ , SrB 2 O 4 :Eu 3+ and SrB 2 O 4 :Tb 3+ , respectively. This phenomenon is considered to be due to the similar radii between charge compensator ions (K + , Na + and Na + ) and the replaced ions (Ba 2+ , Sr 2+ and Sr 2+ ), which would lead to a smaller lattice deformation .…”

Section: Resultscontrasting

confidence: 99%

“…K + , Na + and Na + ions are the optimal charge compensators for BaB 2 O 4 :Eu 3+ , SrB 2 O 4 :Eu 3+ and SrB 2 O 4 :Tb 3+ , respectively. This phenomenon is considered to be due to the similar radii between charge compensator ions (K + , Na + and Na + ) and the replaced ions (Ba 2+ , Sr 2+ and Sr 2+ ), which would lead to a smaller lattice deformation . The radii of replaced ions Ba 2+ , Sr 2+ and Zn 2+ in the host lattice are 135, 113 and 60 pm, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, doping charge compensators to eliminate charge defects and improve luminescent intensity of phosphors effectively has aroused a wide interest . Recently, three new phosphors (BaB 2 O 4 :Eu 3+ , SrB 2 O 4 :Eu 3+ and SrB 2 O 4 :Tb 3+ ) have been reported and the effects of charge compensators (Li + , Na + or K + ) on their photoluminescence spectra were also investigated by our research group . Preliminary results indicate that charge‐compensation effect is related to the radii of charge compensators and the replaced ions.…”

Section: Introductionmentioning

confidence: 94%

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The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB₂O₄:Tb³⁺ phosphor

Liu

Wang

et al. 2014

Luminescence

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Charge compensation is an effective way to eliminate charge defects and improve the luminescent intensity of phosphors. In this paper, a new green-emitting phosphor ZnB(2)O(4):Tb(3+) was prepared by solid-state reaction at 750 °C. The effects of Tb(3+) doping content and charge compensators (Li(+), Na(+) or K(+)) on photoluminescence properties of ZnB(2)O(4):Tb(3+) were investigated. X-ray powder diffraction analysis confirms the sample has cubic structure of ZnB(2)O(4). The excitation and emission spectra indicate that this phosphor can be excited by near ultraviolet light at 378 nm, and exhibits bright green emission with the highest peak at 544 nm corresponding to the (5)D4 → (7)F5 transition of Tb(3+). The critical quenching concentration of Tb(3+) in ZnB(2)O(4) host is 8 mol%. The results of charge compensation show that the emission intensity can be improved by Na(+) and K(+). Specifically, K(+) is the optimal one for ZnB(2)O(4):Tb(3+).

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Section: Resultscontrasting

confidence: 99%

Section: Resultscontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

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The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB₂O₄:Tb³⁺ phosphor

Liu

Wang

et al. 2014

Luminescence

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“…Generally, alkali metals M + (such as Li + , Na + or K + ) were frequently used as charge compensators to keep the charge balance when the trivalent ions replaced the bivalence . Once the alkali metal ions M + were incorporated into the phosphor and occupied the Sr 2+ sites with Eu 3+ ions, the detailed description is as follows:

{Eu}^{3 +} + {normalM}^{+} + 2 {Sr}^{2 +} \to {Eu}_{{Sr}^{2 +}}^{3 +}^{∙} + {normalM}_{{Sr}^{2 +}}^{+}^{∙}

…”

Section: Resultsmentioning

confidence: 99%

Enhancing emission intensity and thermal stability by charge compensation in Sr₂Mg₃P₄O₁₅:Eu³⁺

et al. 2017

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Charge compensation was the effective methods to enhance the luminescence properties of phosphors. In this paper, novel single-phased orange light emitting Sr 2 Mg 3 P 4 O 15 :Eu 3+ phosphors were prepared by solid state method. The phase purity and luminous characteristics were examined in detail. Meanwhile, three kinds of charge compensation methods (co-doping the alkali metal R + (R + = Li, Na, and K), substituting Si 4+ for P 5+ and self-compensation) were employed to solve the charge imbalance problem between Sr 2+ and Eu 3+ . The results showed that emission intensity of Eu 3+ was improved by 1.43 (Li + ), 1.58 (Na + ), 1.53 (K + ), 1.61 (Si 4+ ), and 1.30 (self) times than that of Sr 1.6 Mg 3 P 4 O 15 :0.40Eu 3+ , respectively, and there was no change in the emitting color simultaneously. Furthermore, as the temperature reached at 423 K, the emission intensity increased from 41.67% of Sr 1.6 Mg 3 P 4 O 15 :0.40Eu 3+ to 55.69% (Li + ), 61.62% (Na + ), 58.98% (K + ), 71.15% (Si 4+ ), and 80.59% (self) of that at room temperature. The reasons of those phenomena were the reduction in ion vacancies caused by charge imbalance through the charge compensation process. The specific mechanisms were elaborated in detail.Overall, this research validated that the charge compensation strategies could be severed as the key method to improve the luminescence properties, especially the thermal stability of phosphor.

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Luminescence properties of novel yellowish-green-emitting phosphor KBaBP₂O₈:Tb³⁺

Han

Zhang

et al. 2014

Phys. Status Solidi A

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A series of novel yellowish‐green‐emitting K1+xBa1−2xTbxBP2O8 (0.02 ≤ x ≤ 0.15) phosphors were first synthesized by a high‐temperature solid‐state reaction method, and their phase purity as well as photoluminescence properties were investigated by X‐ray diffraction (XRD) and fluorescence spectroscopy (FS) measurements, respectively. The influence of the doping concentration of Tb3+ on its relative emission intensity and decay behavior was systematically investigated. The critical distance as well as the concentration‐quenching mechanism was calculated and confirmed. The as‐prepared phosphor can be excited effectively with a 370 nm light, and exhibit yellowish‐green emission with a short decay time of the order of millisecond. The above work indicates this phosphor could be a potential candidate as a yellowish‐green‐emitting phosphor for application in white‐light‐emitting diodes.

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Improved photoluminescence properties of a new green SrB2O4:Tb3+ phosphor by charge compensation

Cited by 30 publications

References 14 publications

The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB₂O₄:Tb³⁺ phosphor

The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB₂O₄:Tb³⁺ phosphor

Enhancing emission intensity and thermal stability by charge compensation in Sr₂Mg₃P₄O₁₅:Eu³⁺

Luminescence properties of novel yellowish-green-emitting phosphor KBaBP₂O₈:Tb³⁺

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Improved photoluminescence properties of a new green SrB2O4:Tb3+ phosphor by charge compensation

Cited by 30 publications

References 14 publications

The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB2O4:Tb3+ phosphor

The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB2O4:Tb3+ phosphor

Enhancing emission intensity and thermal stability by charge compensation in Sr2Mg3P4O15:Eu3+

Luminescence properties of novel yellowish-green-emitting phosphor KBaBP2O8:Tb3+

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The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB₂O₄:Tb³⁺ phosphor

The effects of charge compensation on photoluminescence properties of a new green‐emitting ZnB₂O₄:Tb³⁺ phosphor

Enhancing emission intensity and thermal stability by charge compensation in Sr₂Mg₃P₄O₁₅:Eu³⁺

Luminescence properties of novel yellowish-green-emitting phosphor KBaBP₂O₈:Tb³⁺