Effect of [PO4]3−/[VO4]3− substitution on the structure and luminescence properties of Ca5[(P,V)O4)]3F:Eu3+ phosphors

Deng, Tongrong; Xia, Zhiguo; Ding, Hao

doi:10.1016/j.cplett.2015.08.002

Cited by 9 publications

(2 citation statements)

References 17 publications

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“…Luminescence properties, such as the thermal stability and spectral position, can be effectively improved. Thus, anionic polyhedral substitution has become an effective way of designing a new host to modify the luminescence properties. − For example, through chemical unit cosubstitution of (Al 3+ -F – ) for (Si 4+ -O 2– ), the emission peak shifts from 520 to 490 nm with increasing (Al 3+ -F – ) content in (1 – x )Sr 3 SiO 5 - x (Sr,Ba) 3 AlO 4 F:Ce 3+ . The emission peak of Lu x Sr 1.97– x N x O 4– x :0.03Eu 2+ redshifts from 563 to 583 nm with increasing (Lu 3+ -N 3– ) content .…”

Section: Introductionmentioning

confidence: 99%

“…The variations of the emission and excitation spectra of Ca 5 [(P,V)O 4 )] 3 F:Eu 3+ can still be observed depending on the varied (PO 4 ) 3– /(VO 4 ) 3– substitution amounts . Similarly, in spite of the fact that the hosts of Sr 5 (PO 4 ) 3 Cl and Sr 5 (BO 3 )Cl do not belong to the isostructural phase nor are they in the same crystal system and space group, the color-tunable emission of Sr 5 (PO 4 ) 3– x (BO 3 ) x Cl:Eu 2+ can still be obtained via (BO 3 ) 3– substitution for (PO 4 ). − The above results reveal that the luminescence properties are closely related to the host characteristics, but it does not necessarily require that the host belong to the isostructure and be in the same crystal system.…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca_5–y(BO₃)_3–x(PO₄)_xF (CBP_xF):yBi³⁺

Wang

Liu

et al. 2018

Inorg. Chem.

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Tricoordinated planar triangle (PO 4 ) 3− may be formed due to the structural differences between planar triangular (BO 3 ) 3− and tetrahedral (PO 4 ) 3− when (BO 3 ) 3− is gradually substituted by (PO 4 ) 3− . This transformation of structure may affect the luminescence properties of phosphor. Therefore, a series of Ca 5−y (BO 3 ) 3−x (PO 4 ) x F (CBP x F):yBi 3+ (y = 0.05, 0.15; x = 0−3), Ca 5−y (PO 4 ) 3−X (BO 3 ) X F (CPB X F):yBi 3+ (y = 0.05, 0.15; X = 0−1), Ca 4.9 (PO 4 ) 3 F (CPF):0.1Eu 3+ , Ca 4.95 (PO 4 ) 3 F (CPF):0.05Bi 3+ , and nCaF 2 /CaCl 2 (n = 0−0.1) are synthesized to explore transformation of the crystal structure on luminescence properties. In CBP x F:0.15Bi 3+ (x = 0−3), (PO 4 ) 3− is doped to substitute for (BO 3 ) 3− , the position of emission spectra remains unchanged and the emission intensity decreases rapidly with increasing x. The underlying main reason for that is formation of the triangular plane (PO 4 ) 3− , which has been verified by performing a series of verification experiments of CPB X F:yBi 3+ (y = 0.5, 0.15; X = 0−1). In CPB X F:yBi 3+ (y = 0.5, 0.15; X = 0−1), (BO 3 ) 3− is doped to substitute for (PO 4 ) 3− , P− O2 bond breaks and the coordination of (PO 4 ) 3− varies from four to three when 0.5 < X < 1; meanwhile, the crystal structure transforms from Ca 5 (PO 4 ) 3 F (ICSD-9444) to Ca 5 (PO 4 ) 3 F (ISCD-30261), which impedes abnormal reduction from Bi 3+ to Bi 2+ . Furthermore, Bi 3+ should non-luminance in the plane triangular (PO 4 ) 3− , but luminescence in (BO 3 ) 3− . Therefore, the emission intensity starts to increase and the emission position suddenly changes from 553 to 474 nm in CPB X F:yBi 3+ (y = 0.05, 0.15; 0.5 < X < 1). From this, the crystal structures of CBP x F:yBi 3+ (y = 0.05, 0.15; x = 0−3) has been inferred to transform from Ca 5 (BO 3 ) 3 F (ISCD-65763) to Ca 5 (PO 4 ) 3 F (ISCD-30261), and then to Ca 5 (PO 4 ) 3 F (ISCD-9444) with x increasing. Emission position remains unchanged and the emission intensity decreases rapidly in CBP x F:yBi 3+ (y = 0.05, 0.15; x = 0−3) do to formation of the triangular plane (PO 4 ) 3− . In addition, the rate of abnormal reduction from Bi 3+ to Bi 2+ can be improved by reducing the electronegativity of the environment around the activator or increasing the ionization energy of the activator, which has been confirmed by verification experiments of CPF:0.05Bi 3+ , nCaF 2 /CaCl 2 (n = 0−0.1), and CPF:0.1Eu 3+ .

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca_5–y(BO₃)_3–x(PO₄)_xF (CBP_xF):yBi³⁺

Wang

Liu

et al. 2018

Inorg. Chem.

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Synthesis, energy transfer and luminescence properties of KSrVO4:Eu3+ red phosphor

Cao

Peng

et al. 2016

J Mater Sci: Mater Electron

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Luminescence properties and thermal quenching behavior of Dy3+ activated Ca5Y3Na2(PO4)5(SiO4)F2 phosphor

Wang

Shi

2016

J Mater Sci: Mater Electron

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Effect of [PO4]3−/[VO4]3− substitution on the structure and luminescence properties of Ca5[(P,V)O4)]3F:Eu3+ phosphors

Cited by 9 publications

References 17 publications

Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca_5–y(BO₃)_3–x(PO₄)_xF (CBP_xF):yBi³⁺

Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca_5–y(BO₃)_3–x(PO₄)_xF (CBP_xF):yBi³⁺

Synthesis, energy transfer and luminescence properties of KSrVO4:Eu3+ red phosphor

Luminescence properties and thermal quenching behavior of Dy3+ activated Ca5Y3Na2(PO4)5(SiO4)F2 phosphor

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Effect of [PO4]3−/[VO4]3− substitution on the structure and luminescence properties of Ca5[(P,V)O4)]3F:Eu3+ phosphors

Cited by 9 publications

References 17 publications

Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca5–y(BO3)3–x(PO4)xF (CBPxF):yBi3+

Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca5–y(BO3)3–x(PO4)xF (CBPxF):yBi3+

Synthesis, energy transfer and luminescence properties of KSrVO4:Eu3+ red phosphor

Luminescence properties and thermal quenching behavior of Dy3+ activated Ca5Y3Na2(PO4)5(SiO4)F2 phosphor

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Product

Resources

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Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca_5–y(BO₃)_3–x(PO₄)_xF (CBP_xF):yBi³⁺

Mechanism of Crystal Structure Transformation and Abnormal Reduction in Ca_5–y(BO₃)_3–x(PO₄)_xF (CBP_xF):yBi³⁺