Synthesis, structure, and color-tunable luminescence properties of lanthanide activator ions doped bismuth silicate as single-phase white light emitting phosphors

2020 ◽  
Vol 816 ◽  
pp. 152546 ◽  
Author(s):  
Lei Zhang ◽  
Pan Li ◽  
Ankang Zhao ◽  
Xiao Li ◽  
Jie Tang ◽  
...  
Keyword(s):  
White Light ◽  
Single Phase ◽  
Luminescence Properties ◽  
Bismuth Silicate ◽  
Light Emitting ◽  
Color Tunable ◽  
Activator Ions

scholarly journals A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+: synthesis, crystal structure and luminescence properties

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24577-24583 ◽  
Author(s):  
Haikun Liu ◽  
Libing Liao ◽  
Maxim S. Molokeev ◽  
Qingfeng Guo ◽  
Yuanyuan Zhang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Solid State ◽  
White Light ◽  
Single Phase ◽  
Luminescence Properties ◽  
Light Emitting ◽  
State Technology

A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+ was prepared through traditional high-temperature solid state technology.

scholarly journals Structure and luminescence properties of La6Ba4(SiO4)6F2:Dy3+ phosphor with apatite structure

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 38883-38890 ◽  
Author(s):  
Jialei Zhang ◽  
Qingfeng Guo ◽  
Libing Liao ◽  
Yongjie Wang ◽  
Mingyue He ◽  
...  
Keyword(s):  
Thermal Stability ◽  
White Light ◽  
Single Phase ◽  
Luminescence Properties ◽  
Apatite Structure ◽  
Light Emitting ◽  
Good Thermal Stability

Single-phase white light emitting La6Ba4(SiO4)6F2:Dy3+ phosphors with good thermal stability were obtained.

Crystal structure and photoluminescence tuning of novel single-phase Ca8ZnLu(PO4)7:Eu2+,Mn2+ phosphors for near-UV converted white light-emitting diodes

2019 ◽  
Vol 7 (27) ◽  
pp. 8374-8382 ◽  
Author(s):  
Jing Yan ◽  
Ziwang Zhang ◽  
Dawei Wen ◽  
Jianbang Zhou ◽  
Yiqin Xu ◽  
...  
Keyword(s):  
Crystal Structure ◽  
White Light ◽  
Single Phase ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Color Tunable ◽  
Color Rendering Index ◽  
White Light Emitting Diodes ◽  
Color Rendering

A single phase color-tunable white light emitting Ca8ZnLu(PO4)7:Eu2+,Mn2+ phosphor with high color rendering index has been rationally designed via combination of cyan and red emissions.

A single-phase, color-tunable, broadband-excited white light-emitting phosphor Y2WO6: Sm3+

2014 ◽  
Vol 146 ◽  
pp. 33-36 ◽  
Author(s):  
Zhongfei Mu ◽  
Yihua Hu ◽  
Li Chen ◽  
Xiaojuan Wang ◽  
Guifang Ju ◽  
...  
Keyword(s):  
White Light ◽  
Single Phase ◽  
Light Emitting ◽  
Color Tunable

A Single-Phase Full-Color Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ Micron Belt Mat for White-Light Emitting Diode Application

2016 ◽  
Vol 697 ◽  
pp. 727-732 ◽  
Author(s):  
Bo Cui ◽  
Qing Hong Zhang ◽  
Hong Zhi Wang ◽  
Yao Gang Li
Keyword(s):  
Heat Treatment ◽  
White Light ◽  
Single Phase ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Electrospinning Process ◽  
Light Emitting ◽  
Full Color ◽  
Color Tunable ◽  
White Light Emitting Diodes

A new kind of Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ oxyfluoride phosphor micron belt mat was obatained by simply electrospinning process and subsequent heat treatment. XRD result shows that a pure Ca4Si2O7F2 phase can be obtained at low temperature of around 900 °C. The micron belt precursor has a smooth surface and uniform morphology, and the width and thickness of the belt is about 2 μm and 200 nm. The morphology of micron belt is well retained after heat treatment, forming a plat phosphor mat consisting of uniform micron belt network. Ca4Si2O7F2:Ce3+, Ca4Si2O7F2:Tb3+, and Ca4Si2O7F2:Sm3+ exhibit the characteristic emissions of Ce3+ (4f7→4f65d1, blue), Tb3+ (4f8→4f75d, green), and Sm3+ (4f6→4f65d, red) under the excitation of near-UV light, respectively. By adjusting the doping concentration of Ce3+, Tb3+, Sm3+ ions a white emission in a single phase was obtained under the excitation of 360 nm. We have demonstrated that Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ phosphor mat can be a promising candidate for a color-tunable phosphor mat applied in a near-UV White light emitting diodes.

scholarly journals Crystal Structure and Luminescence Properties of a Thermally Stable Single-Phase White Emitting Phosphor CaSr2(PO4)2: Dy3+, Li+

2021 ◽  
Author(s):  
Qingfeng Guo ◽  
Yuying Chen ◽  
Qiang Hao ◽  
Stefan Lis ◽  
Haikun Liu ◽  
...  
Keyword(s):  
White Light ◽  
Single Phase ◽  
Emission Spectra ◽  
Luminescence Properties ◽  
Solid State Method ◽  
Excellent Thermal Stability ◽  
Light Emitting ◽  
Diffraction Patterns ◽  
White Light Emitting Diodes ◽  
White Luminescence

Abstract Single-phase CaSr2(PO4)2:Dy3+,Li+ phosphors were prepared using the high-temperature solid-state method in the air. To characterize the luminescence properties of the synthesized phosphors, Powder X-ray diffraction patterns (XRD), scanning electron microscopy images (SEM), photoluminescence spectra, and concentration-dependent emission spectra were measured to characterize the luminescence properties of the synthesized phosphors. The results showed that the CaSr2(PO4)2:Dy3+,Li+ phosphors exhibited white luminescence, and the emission spectra of the phosphors consisted of two sharp peaks at ≈486 and ≈578 nm (the most intense one). The optimum concentration of Dy3+ doping was determined to 0.06 mol.%. On the basis of the Dexter's theory, the mechanism of energy transfer between the Dy3+ ions was determined to dipole–dipole interactions. The results of the temperature-dependent luminescence confirmed that the as-prepared phosphors are proved to be promising UV-convertible material capable of white light emitting in UV-LEDs due to its excellent thermal stability and luminescence properties. Luminescence intensity and decay time of the CaSr2(PO4)2:Dy3+,Li+ phosphors were improved remarkably with the addition of charge compensators (Li+ ions), which would promote their applications in white light-emitting diodes based on the near-UV chip.

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