Synthesis and luminescence properties of novel white emitting phosphor KMgLa(PO4)2:Dy3+

Yang, Zhaochu; Li, Ting; Li, Panlai; Wang, Zhijun; Xu, Shuchao; Bai, Qingshun; Dong, Hongyan

doi:10.1016/j.jlumin.2016.05.053

Cited by 29 publications

(3 citation statements)

References 24 publications

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“…The function of a single-component white phosphor generally relies on their interaction, especially energy transfer, between the rare-earth ions in an appropriate host. Until now, many studies related to rare-earth-doped phosphate phosphors − have been conducted in search of novel single-component white phosphors, mainly due to high absorption in the UV region and structural diversity of the phosphate host. Nevertheless, few of them are suitable for commercial use, and most of these phosphors usually suffer some characteristic deficiencies, such as synthetic processing (requiring inert atmosphere protection) and emission loss or shift with increasing temperature.…”

Section: Introductionmentioning

confidence: 99%

Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn₂P₄O₁₄ Phosphate-Based Phosphors

et al. 2017

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Single-component white phosphors stand a good chance to serve in the next-generation high-power white light-emitting diodes. Because of low thermal stability and containing lanthanide ions with reduced valence state, most of reported phosphors usually suffer unstable color of lighting for practical packaging and comparably complex synthetic processes. In this work, we present a type of novel color-tunable blue-white-yellow-emitting MgInPO:Tm/Dy phosphor with high thermal stability, which can be easily fabricated in air. Under UV excitation, the MgInPO:TmDy white phosphor exhibits negligible thermal-quenching behavior, with a 99.5% intensity retention at 150 °C, relative to its initial value at room temperature. The phosphor host MgInPO was synthesized and reported for the first time. MgInPO crystallizes in the space group of C2/c (No. 15) with a novel layered structure built of alternate anionic and cationic layers. Its disordering structure, with Mg and In atoms co-occupying the same site, is believed to facilitate the energy transfer between rare-earth ions and benefit by sustaining the luminescence with increasing temperature. The measured absolute quantum yields of MgInPO:Dy, MgInPO:TmDy, and MgInPO:TmDy phosphors under the excitation of 351 nm ultraviolet radiation are 70.50%, 53.24%, and 52.31%, respectively. Present work indicates that the novel layered MgInPO is a promising candidate as a single-component white phosphor host with an excellent thermal stability for near-UV-excited white-light-emitting diodes (wLEDs).

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Section: Introductionmentioning

confidence: 99%

Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn₂P₄O₁₄ Phosphate-Based Phosphors

et al. 2017

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“…The latter is induced by the hypersensitive transition (ΔL=2, ΔJ=2 ), which is strongly influenced by the chemical environment surrounding Dy 3+ [8]. At a suitable yellow-to-blue intensity ratio, Dy 3+ will emit white light [9][10][11][12][13]. However, the f-f transitions of Dy 3+ ions generally have low excitation efficiencies due to their forbidden parity selection rules.…”

Section: Introductionmentioning

confidence: 99%

A white-light emitting phosphor LuNbO4:Dy3+ with tunable emission color manipulated by energy transfer from NbO43− groups to Dy3+

Wang

Chen

et al. 2017

Journal of Luminescence

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“…The obtained CIE colour coordinates of Pb 5 (PO 4 ) 3 Br:Dy 3+ , Pb 5 (PO 4 ) 3 Br:DyEu 3+ and Pb 5 (PO 4 ) 3 Br:Tb 3+ phosphors are presented in Table 1. By mixing the three strong emissions at 480 nm from Pb 5 (PO 4 ) 3 Br:Dy 3+ phosphor, 547 nm from Pb 5 (PO 4 ) 3 Br:Tb 3+ phosphor and 395 nm from Pb 5 (PO 4 ) 3 Br:Eu 3+ phosphor defined by their colour coordinates, most of the parts of white shades within the triangle (shown by dark black lines) can be accessed, as shown in the Figure 11, and therefore the synthesised phosphor can be used for the development of white light‐emitting diodes [41–45].…”

Section: Resultsmentioning

confidence: 99%

Photoluminescence properties of Pb₅(PO₄)₃Br:RE (RE = Dy³⁺, Eu³⁺ and Tb³⁺) phosphor synthesised using solid‐state method

Shinde,

Dhoble,

Yerpude

2024

Luminescence

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This study describes the luminous properties of Pb5(PO4)3Br doped with RE3+ (RE = Dy3+, Eu3+ and Tb3+) synthesised using the solid‐state method. The synthesised phosphor was characterised using Fourier‐transform infrared, X‐ray diffraction, scanning electron microscopy and photoluminescence measurements. Dy3+‐doped Pb5(PO4)3Br phosphor exhibited blue and yellow emissions at 480 and 573 nm, respectively, on excitation at 388 nm. Eu3+‐doped Pb5(PO4)3Br phosphor exhibited orange and red emissions at 591 and 614 nm, respectively, on excitation at λex = 396 nm. Pb5(PO4)3Br:Tb3+ phosphor exhibited the strongest green emission at 547 nm on excitation at λex = 380 nm. Additionally, the effect of the concentration of rare‐earth ions on the emission intensity of Pb5(PO4)3Br:RE3+ (RE3+ = Dy3+, Eu3+ and Tb3+) phosphors was investigated.

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Synthesis and luminescence properties of novel white emitting phosphor KMgLa(PO4)2:Dy3+

Cited by 29 publications

References 24 publications

Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn₂P₄O₁₄ Phosphate-Based Phosphors

Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn₂P₄O₁₄ Phosphate-Based Phosphors

A white-light emitting phosphor LuNbO4:Dy3+ with tunable emission color manipulated by energy transfer from NbO43− groups to Dy3+

Photoluminescence properties of Pb₅(PO₄)₃Br:RE (RE = Dy³⁺, Eu³⁺ and Tb³⁺) phosphor synthesised using solid‐state method

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Synthesis and luminescence properties of novel white emitting phosphor KMgLa(PO4)2:Dy3+

Cited by 29 publications

References 24 publications

Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn2P4O14 Phosphate-Based Phosphors

Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn2P4O14 Phosphate-Based Phosphors

A white-light emitting phosphor LuNbO4:Dy3+ with tunable emission color manipulated by energy transfer from NbO43− groups to Dy3+

Photoluminescence properties of Pb5(PO4)3Br:RE (RE = Dy3+, Eu3+ and Tb3+) phosphor synthesised using solid‐state method

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Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn₂P₄O₁₄ Phosphate-Based Phosphors

Layered Crystal Structure, Color-Tunable Photoluminescence, and Excellent Thermal Stability of MgIn₂P₄O₁₄ Phosphate-Based Phosphors

Photoluminescence properties of Pb₅(PO₄)₃Br:RE (RE = Dy³⁺, Eu³⁺ and Tb³⁺) phosphor synthesised using solid‐state method