Synthesis and luminescence properties of LiBaPO4:Bi3+ yellow-emitting phosphor for solid-state lighting

Cao, Renping; Quan, Guanjun; Shi, Zhongyuan; Gou, Qingdong; Chen, Ting; Hu, Zhifeng; Luo, Zhiyang

doi:10.1007/s10854-017-8493-y

Cited by 24 publications

(14 citation statements)

References 36 publications

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“…20,21 Hence, to improve the luminescent intensity, K + ions were also introduced into our system. 22,23 As expected, the enhanced luminescent intensities are achieved with the increasing concentration of K + ions ( Figure 3A). The high concentration of dopant seems to indicate that the material may have a phase transition.…”

Section: Introductionsupporting

confidence: 82%

“…The emission color, excitation wavelength matching and the luminescent intensity are crucial factors for practical LED applications 20,21 . Hence, to improve the luminescent intensity, K + ions were also introduced into our system 22,23 . As expected, the enhanced luminescent intensities are achieved with the increasing concentration of K + ions (Figure 3A).…”

Section: Introductionsupporting

confidence: 55%

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An orange‐emitting phosphor BaSrGa₄O₈:Bi³⁺,K⁺ with unique one‐dimensional chain structure for high index color WLEDs

Long

Wen

et al. 2020

J Am Ceram Soc

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It has been an urgent need for developing a new bright long‐wave emitting phosphor to improve the color rendering index (CRI) of white light‐emitting diodes (WLEDs). Here, based on the concept of oxygen vacancy‐induced long‐wave emission by Bi3+ doping, we selected BaSrGa4O8 as the matrix, which has a low‐dimensional chain structure that can produce enough oxygen vacancies. After the introduction of Bi3+, orange emission was successfully achieved. To further improve the luminescence efficiency, the system of BaSrGa4O8:Bi3+,K+ was designed. Interestingly, although significant emission enhancement was obtained, the material showed reduced absorption with increased oxygen vacancies. More detailed experimental evidences confirm that oxygen vacancies can activate Bi3+ to achieve long‐wave emission. Our results provide a new way to design Bi3+‐based long‐wave emitting phosphors with low‐dimensional crystal structure. Finally, a WLED device containing BaSrGa4O8:Bi3+,K+ was fabricated and exhibited an enhanced CRI, which shows a promising application in WLEDs.

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Section: Introductionsupporting

confidence: 82%

Section: Introductionsupporting

confidence: 55%

An orange‐emitting phosphor BaSrGa₄O₈:Bi³⁺,K⁺ with unique one‐dimensional chain structure for high index color WLEDs

Long

Wen

et al. 2020

J Am Ceram Soc

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“…At the same time, Bi 3+ is an outstanding sensitizer and activator. The electronic configuration of ground state and first excited state of Bi 3+ are 6s 2 and 6s6p, respectively . Upon n‐UV excitation, Bi 3+ can emit broadband emission due to 3 P 1 → 1 S 0 transition .…”

Section: Introductionmentioning

confidence: 99%

Energy transfer and color‐tunable emission in Ba₂Y₂Si₄O₁₃:Bi³⁺,Eu³⁺ phosphors

et al. 2018

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Single‐composition Ba2Y2Si4O13:Bi3+,Eu3+ (BYSO:Bi3+,Eu3+) phosphors with color‐tunable and white emission were prepared by conventional high temperature solid‐state reaction method. The structural and luminescent properties of these phosphors were thoroughly investigated through X‐ray diffraction, photoluminescence, and decay curves. BYSO:Bi3+ phosphors show two excitation peaks at 342 and 373 nm, and give two emission peaks at 414 and 503 nm, respectively, indicating that there are two sites of Bi3+ in BYSO. The energy transfer from Bi3+ to Eu3+ was investigated in detail. Varied hues from blue (chromaticity coordinate [0.219, 0.350]) to white (0.288, 0.350) and orange‐red light (0.644, 0.341) can be generated by adjusting the content of Eu3+. Pure white light emission (0.311, 0.338) can be obtained under the excitation of 355 nm in BYSO:3%Bi3+,20%Eu3+ phosphor. Besides, BYSO:Bi3+,Eu3+ phosphors exhibit distinct thermal quenching properties, whose emission intensity at 473 K is 82.6% of that at 298 K. Our results indicate that BYSO:Bi3+,Eu3+ may be applied as conversion phosphors for n‐UV‐based W‐LEDs.

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“…PL spectrum of CaZrO 3 :5% Eu 3+ , 0.9% Bi 3+ phosphor with excitation 310 nm contains a broad PL band and four narrow PL bands in the range of 340-725 nm. The broad PLE band peaking at ~ 390 nm within the range 340-500 nm is assigned to the 3 P 1 → 1 S 0 transition of Bi 3+ ion [30]. Four narrow PL bands are attributed to the 5 D 0 → ( 7 F 1 , 7 F 2 , 7 F 3 , and 7 F 4 ) transitions of Eu 3+ ion [31] [32].…”

Section: Luminescence Propertiesmentioning

confidence: 93%

Synthesis, energy transfer, charge compensation and luminescence properties of CaZrO3:Eu3+, Bi3+, Li+ phosphor

Cao

Xiao

Zhang

et al. 2018

J Mater Sci: Mater Electron

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phosphors are synthesized by high-temperature solid-state reaction method in air. Their luminescence properties are researched, compared, and analyzed. CaZrO 3 :Bi 3+ phosphor under excitation at 310 nm emits deep-blue light with chromaticity coordinate (0.1612, 0.0254). CaZrO 3 :Eu 3+ phosphor under excitation at 310 and 395 nm shows red-emitting with chromaticity coordinate (0.6386, 0.3611). CaZrO 3 :Eu 3+ , Bi 3+ phosphor under excitation at 310 nm exhibits a systematically varied hue from deep-blue to red light by changing Eu 3+ ion concentration, and that with excitation at 395 nm only emits red light with chromaticity coordinate (0.6386, 0.3611). The energy transfer process from Bi 3+ to Eu 3+ ions may be indicated by their spectral properties. The optimal Eu 3+ and Bi 3+ ions concentrations are 5 mol% and 0.9 mol%, respectively. The emission intensity CaZrO 3 :Eu 3+ , Bi 3+ phosphor may be enhanced about 1.6 times due to the co-doping Li + ion as charge compensator role. The luminous mechanism of CaZrO 3 :Eu 3+ , Bi 3+ phosphor is explained by the simplified energy level diagrams of Bi 3+ and Eu 3+ ions.

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Synthesis and luminescence properties of LiBaPO4:Bi3+ yellow-emitting phosphor for solid-state lighting

Cited by 24 publications

References 36 publications

An orange‐emitting phosphor BaSrGa₄O₈:Bi³⁺,K⁺ with unique one‐dimensional chain structure for high index color WLEDs

An orange‐emitting phosphor BaSrGa₄O₈:Bi³⁺,K⁺ with unique one‐dimensional chain structure for high index color WLEDs

Energy transfer and color‐tunable emission in Ba₂Y₂Si₄O₁₃:Bi³⁺,Eu³⁺ phosphors

Synthesis, energy transfer, charge compensation and luminescence properties of CaZrO3:Eu3+, Bi3+, Li+ phosphor

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Synthesis and luminescence properties of LiBaPO4:Bi3+ yellow-emitting phosphor for solid-state lighting

Cited by 24 publications

References 36 publications

An orange‐emitting phosphor BaSrGa4O8:Bi3+,K+ with unique one‐dimensional chain structure for high index color WLEDs

An orange‐emitting phosphor BaSrGa4O8:Bi3+,K+ with unique one‐dimensional chain structure for high index color WLEDs

Energy transfer and color‐tunable emission in Ba2Y2Si4O13:Bi3+,Eu3+ phosphors

Synthesis, energy transfer, charge compensation and luminescence properties of CaZrO3:Eu3+, Bi3+, Li+ phosphor

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An orange‐emitting phosphor BaSrGa₄O₈:Bi³⁺,K⁺ with unique one‐dimensional chain structure for high index color WLEDs

An orange‐emitting phosphor BaSrGa₄O₈:Bi³⁺,K⁺ with unique one‐dimensional chain structure for high index color WLEDs

Energy transfer and color‐tunable emission in Ba₂Y₂Si₄O₁₃:Bi³⁺,Eu³⁺ phosphors