Synthesis and luminescent properties of KGd(MoO 4 ) 2 :Sm 3+ red phosphor for white light emitting diodes

Ren, Qiang; Lin, Fei; Wu, Xiulan; Wei, Tengyue; Jiao, Yehui; Li, Huanhuan

doi:10.1016/j.materresbull.2017.02.023

Cited by 46 publications

(6 citation statements)

References 30 publications

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“…Under the excitation of 405 nm, the internal quantum efficiency of the CaGd 2 (MoO 4 ) 4 :0.06Sm 3+ phosphor was found to be around 21.6%. It is evident that the internal quantum efficiency of the studied samples was comparable with other reports based on the Sm 3+ ‐activated inorganic compounds, such as Ba 5 (BO 3 ) 2 (B 2 O 5 ):Sm 3+ (16.0%), KGd(MoO 4 ) 2 :Sm 3+ (28.5%), and NaLaMgWO 6 :Sm 3+ (11.9%) …”

Section: Resultssupporting

confidence: 86%

Near‐ultraviolet light–induced dazzling red emission in CaGd₂(MoO₄)₄:2xSm³⁺ compounds for phosphor‐converted WLEDs

Zhou

2019

J Am Ceram Soc

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The Sm3+‐activated CaGd2(MoO4)4 phosphors were prepared through a sol‐gel reaction route. From the results of excitation spectrum, three‐dimensional emission spectra and contour lines, it was confirmed that the near‐ultraviolet (NUV) light was the proper excitation light source for the synthesized phosphors. Under 405 nm irradiation, the luminescent behaviors of the studied samples were revealed to be dependent on the Sm3+ ion concentration and its optimal value of 0.03 mol was obtained. Through theoretical analysis, it is evident that the dipole‐dipole interaction can be responsible for the involved concentration quenching mechanism in the final products and the critical distance was 39.7 Å. Moreover, the temperature‐dependent emission spectra demonstrated that the studied samples had admirable thermal stability and the activation energy was decided to be 0.21 eV. Furthermore, the internal quantum efficiency of the Sm3+‐activated CaGd2(MoO4)4 phosphors was found to be 21.6%. Finally, to explore the practical applications of obtained compounds for indoor illumination, a white light‐emitting diode (WLED) device which contained a NUV chip, prepared phosphors, and commercial blue‐emitting and green‐emitting phosphors was packaged. The packaged WLEDs device can emit dazzling white light with satisfied color coordinate of (0.305, 0.318), proper color rendering index (82.6), and correlated color temperature (7069 K).

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Section: Resultssupporting

confidence: 86%

Near‐ultraviolet light–induced dazzling red emission in CaGd₂(MoO₄)₄:2xSm³⁺ compounds for phosphor‐converted WLEDs

Zhou

2019

J Am Ceram Soc

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“…Photoluminescent properties of RbSmNaNb [61][62][63][64][65] The excitation spectra of Sm 3+ containing RbSmNaNb 3 O 10 and Eu 3+ doped RbSmNaNb 3 O 10 :0.05Eu 3+ samples are shown in Fig. S10 (ESI †).…”

Section: Resultsmentioning

confidence: 99%

Dion–Jacobson A′MⁱⁱⁱNaNb₃O₁₀ (A′ = Rb, Cs; M(iii) = Sm, Bi) and RbSmNa₂Nb₄O₁₃ layered perovskites and their luminescent function

et al. 2022

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“…[ 30 ] Under near‐UV excitation, the electrons of the Sm 3+ ions may be energized, absorb energy and transition from the lower‐energy state ( 6 H 5/2 ) to higher‐energy states. [ 31 ]…”

Section: Resultsmentioning

confidence: 99%

“…[30] Under near-UV excitation, the electrons of the Sm 3+ ions may be energized, absorb energy and transition from the lower-energy state ( 6 H 5/2 ) to higher-energy states. [31] The emission spectra under an excitation of 403 nm near-UV light are depicted in Figure 4b. The strongest peak is situated at 648 nm ( 4 G 5/2 !…”

Section: Synthesis Temperaturementioning

confidence: 99%

Synthesis and photoluminescence enhancement of the LiLa(MoO₄)₂:Sm³⁺ red phosphors by co‐doping with Bi³⁺

et al. 2022

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The LiLa(MoO 4 ) 2 :Sm 3+ and LiLa(MoO 4 ) 2 :Sm 3+ ,Bi 3+ phosphors were prepared using the citric-acid-fueled combustion method and the influence of concentrations of Bi 3+ dopant on LiLa(MoO 4 ) 2 :Sm 3+ red luminescence was investigated. The LiLa(MoO 4 ) 2 : Sm 3+ and LiLa(MoO 4 ) 2 :Sm 3+ ,Bi 3+ samples matched well with the scheelite structure and I4 1 /a space group and did not detect structural changes. Under an excitation of 403 nm, the prepared LiLa(MoO 4 ) 2 :Sm 3+ ,Bi 3+ phosphor was excited and produced orange-red emission. When compared with the LiLa(MoO 4 ) 2 :Sm 3+ phosphor, the LiLa(MoO 4 ) 2 :Sm 3+ ,Bi 3+ phosphor exhibited enhanced fluorescence intensity because the Bi 3+ dopant ions are doped as a sensitizer. The optimal doping concentrations of Sm 3+ and Bi 3+ were 5 and 1 mol%, respectively. Furthermore, the energy transfer from Bi 3+ to Sm 3+ is effective ( 3 P 1 ! 4 K 11/2 ). Subsequently, the electrons in an unstable excited state were transferred to a stable ground state ( 4 G 5/2 ! 6 H 5/2 , 6 H 7/2 , 6 H 9/2 ). The Commission Internationale de L'Eclairage (CIE) chromaticity coordinates of the optimized LiLa(MoO 4 ) 2 :Sm 3+ ,Bi 3+ phosphor were situated in the orange-red region. The luminescence of the LiLa(MoO 4 ) 2 :Sm 3+ ,Bi 3+ phosphor generated under near-ultraviolet (UV) irradiation could be used to produce a warm white light, indicating its possible applications in white light-emitting diodes.

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Synthesis and luminescent properties of KGd(MoO 4 ) 2 :Sm 3+ red phosphor for white light emitting diodes

Cited by 46 publications

References 30 publications

Near‐ultraviolet light–induced dazzling red emission in CaGd₂(MoO₄)₄:2xSm³⁺ compounds for phosphor‐converted WLEDs

Near‐ultraviolet light–induced dazzling red emission in CaGd₂(MoO₄)₄:2xSm³⁺ compounds for phosphor‐converted WLEDs

Dion–Jacobson A′MⁱⁱⁱNaNb₃O₁₀ (A′ = Rb, Cs; M(iii) = Sm, Bi) and RbSmNa₂Nb₄O₁₃ layered perovskites and their luminescent function

Synthesis and photoluminescence enhancement of the LiLa(MoO₄)₂:Sm³⁺ red phosphors by co‐doping with Bi³⁺

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Synthesis and luminescent properties of KGd(MoO 4 ) 2 :Sm 3+ red phosphor for white light emitting diodes

Cited by 46 publications

References 30 publications

Near‐ultraviolet light–induced dazzling red emission in CaGd2(MoO4)4:2xSm3+ compounds for phosphor‐converted WLEDs

Near‐ultraviolet light–induced dazzling red emission in CaGd2(MoO4)4:2xSm3+ compounds for phosphor‐converted WLEDs

Dion–Jacobson A′MiiiNaNb3O10 (A′ = Rb, Cs; M(iii) = Sm, Bi) and RbSmNa2Nb4O13 layered perovskites and their luminescent function

Synthesis and photoluminescence enhancement of the LiLa(MoO4)2:Sm3+ red phosphors by co‐doping with Bi3+

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Near‐ultraviolet light–induced dazzling red emission in CaGd₂(MoO₄)₄:2xSm³⁺ compounds for phosphor‐converted WLEDs

Near‐ultraviolet light–induced dazzling red emission in CaGd₂(MoO₄)₄:2xSm³⁺ compounds for phosphor‐converted WLEDs

Dion–Jacobson A′MⁱⁱⁱNaNb₃O₁₀ (A′ = Rb, Cs; M(iii) = Sm, Bi) and RbSmNa₂Nb₄O₁₃ layered perovskites and their luminescent function

Synthesis and photoluminescence enhancement of the LiLa(MoO₄)₂:Sm³⁺ red phosphors by co‐doping with Bi³⁺