Sol-gel method for preparing a novel red-emitting phosphor YVO4:Sm3+, Eu3+ with ideal red color emission

Xia, Siyu; Guan, Anxiang; Chen, Peican; Wang, Guofang; Geng, Yan; Zhou, Liya

doi:10.1016/j.spmi.2016.06.039

Cited by 12 publications

(2 citation statements)

References 29 publications

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“…Energy is transferred through primarily exchange interaction and multipolar interaction, when the distance, R, between the donor ion and the acceptor ion is less than 0.5 nm and more than 0.5 nm, respectively [26,27]. R Sm−Eu between Eu 3+ and Sm 3+ in the NaLa(MoO 4 ) 2 matrix can be calculated as follows [28] (Table 1):

R_{Sm - Eu} = 2 false(\frac{3 normalV}{4 π χ_{C} N})^{1 / 3},

where V is the unit cell volume, χ c is the total doping mol % concentration of Sm 3+ and Eu 3+ , and N is the number of cation sites.…”

Section: Resultsmentioning

confidence: 99%

Blue-Light-Excited Eu3+/Sm3+ Co-Doped NaLa(MoO4)2 Phosphors: Synthesis, Characterizations and Red Emission Enhancement for WLEDs

et al. 2018

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The system NaLa(MoO4)2:Eu3+/Sm3+ phosphors were prepared by solid-state reaction followed by heat treatment at 450–600 °C. As shown by X-ray powder diffraction, the phosphors had a body-centered tetragonal structure, high phase purity and high crystallinity. The photoluminescence measurements carried out under excitation at 464 nm indicated the main emission at about 615 nm corresponding to the electric dipole transition 5D0→7F2 of Eu3+, which agreed well with the emission wavelengths of the GaN-based blue LED chips. In NaLa(MoO4)2:Eu3+/Sm3+ phosphors, Sm3+ can efficiently transfer excitation energy to Eu3+, which resulted in a significant improvement of the fluorescence intensity, and the fluorescence intensity of the phosphors calcined at 550 °C maximized at the doping concentrations of Eu3+ and Sm3+ of 15.0 and 2.0 mol %, respectively. The decay curves and CIE (Commission Internationale de L’ Eclairage) coordinates of Sm3+ or/and Eu3+ doped phosphors were analyzed for the investigation of the energy transfer mechanism and color variation trend. Thus, NaLa(MoO4)2:Eu3+,Sm3+ can be classified as a potential red-emitting phosphor for white light-emitting diodes (WLEDs).

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R_{Sm - Eu} = 2 false(\frac{3 normalV}{4 π χ_{C} N})^{1 / 3},

where V is the unit cell volume, χ c is the total doping mol % concentration of Sm 3+ and Eu 3+ , and N is the number of cation sites.…”

Section: Resultsmentioning

confidence: 99%

Blue-Light-Excited Eu3+/Sm3+ Co-Doped NaLa(MoO4)2 Phosphors: Synthesis, Characterizations and Red Emission Enhancement for WLEDs

et al. 2018

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“…Among these ions, Eu 3+ ions have attracted a wide research interest because of their special luminescence characteristics. The outer electron configuration of Eu 3+ is 4f 7 5d 0 6s 2 and it can emit an orange or red color when it is doped into some hosts [24][25][26]. In order to improve the Eu 3+ emission intensity, many works have been done through codoping with other ions in different hosts [27].…”

Section: Introductionmentioning

confidence: 99%

Influence of Bi³⁺content on photoluminescence of InNbO₄:Eu³⁺,Bi³⁺for white light-emitting diodes

Tang

Shao

et al. 2017

Materials Science-Poland

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A series of red-emitting phosphors InNbO 4 :Eu 3+ ,Bi 3+ was prepared by a high temperature solid-state reaction. The structure, size distribution and luminescence properties of the phosphors were respectively characterized by X-ray diffraction (XRD), laser particle size and molecular fluorescence spectrometer. The XRD results indicate that the phase-pure samples have been obtained and the crystal structure of the host has not changed under the Eu 3+ and Bi 3+ co-doping. The test of size distribution shows that the phosphor has a normal size distribution. The excitation spectra illustrate that the dominant sharp peaks are located at 394 nm ( 7 F 0 → 5 L 6 ) and 466 nm ( 7 F 0 → 5 D 2 ). Meanwhile, the emission spectra reveal that the phosphors excited by the wavelength of 394 nm or 466 nm have an intense red-emission line at 612 nm owing to the 5 D 0 → 7 F 2 transition of Eu 3+ . Bi 3+ doping has not changed the peak positions except the photoluminescence intensity. The emission intensity is related to Bi 3+ concentration, and it is up to the maximum when the Bi 3+ -doping concentration is 4 mol%. Due to good photoluminescence properties of the phosphor, the InNbO 4 :0.04Eu 3+ ,0.04Bi 3+ may be used as a red component for white light-emitting diodes.

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Synthesis of (La0.8Y0.2)PO4: Sm3+, Eu3+, Na+ and kinetics mechanism study with Z(α) master plots method for thermal process of its precursor

Wang

Wen

Wang

et al. 2018

J Therm Anal Calorim

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Sol-gel method for preparing a novel red-emitting phosphor YVO4:Sm3+, Eu3+ with ideal red color emission

Cited by 12 publications

References 29 publications

Blue-Light-Excited Eu3+/Sm3+ Co-Doped NaLa(MoO4)2 Phosphors: Synthesis, Characterizations and Red Emission Enhancement for WLEDs

Blue-Light-Excited Eu3+/Sm3+ Co-Doped NaLa(MoO4)2 Phosphors: Synthesis, Characterizations and Red Emission Enhancement for WLEDs

Influence of Bi³⁺content on photoluminescence of InNbO₄:Eu³⁺,Bi³⁺for white light-emitting diodes

Synthesis of (La0.8Y0.2)PO4: Sm3+, Eu3+, Na+ and kinetics mechanism study with Z(α) master plots method for thermal process of its precursor

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Sol-gel method for preparing a novel red-emitting phosphor YVO4:Sm3+, Eu3+ with ideal red color emission

Cited by 12 publications

References 29 publications

Blue-Light-Excited Eu3+/Sm3+ Co-Doped NaLa(MoO4)2 Phosphors: Synthesis, Characterizations and Red Emission Enhancement for WLEDs

Blue-Light-Excited Eu3+/Sm3+ Co-Doped NaLa(MoO4)2 Phosphors: Synthesis, Characterizations and Red Emission Enhancement for WLEDs

Influence of Bi3+content on photoluminescence of InNbO4:Eu3+,Bi3+for white light-emitting diodes

Synthesis of (La0.8Y0.2)PO4: Sm3+, Eu3+, Na+ and kinetics mechanism study with Z(α) master plots method for thermal process of its precursor

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Influence of Bi³⁺content on photoluminescence of InNbO₄:Eu³⁺,Bi³⁺for white light-emitting diodes