A kind of oxyfluoride fluorescent powder and preparation method thereof

A technology of oxyfluoride and fluorescent powder, which is applied in the field of oxyfluoride fluorescent powder and its preparation, can solve problems such as the solid solution of optically active elements that are not mentioned, and achieve excellent luminous performance, simple preparation method, and convenient industrial production.

Active Publication Date: 2016-07-06
GRIREM ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this document does not mention anything that optically active elements can be solid-dissolved in a crystalline phase and used as a phosphor

Method used

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  • A kind of oxyfluoride fluorescent powder and preparation method thereof
  • A kind of oxyfluoride fluorescent powder and preparation method thereof
  • A kind of oxyfluoride fluorescent powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh BaCO 3 14.2082g, Sc 2 o 3 3.2409g, BaF 2 4.3831g, Eu 2 o 3 0.5279g, the above raw materials are all analytically pure. After the above raw materials are ground evenly, they are put into an alumina crucible and roasted twice in the air. The first roasting temperature is 1350°C and kept for 4 hours. Roasting, the calcining temperature is 1320 ℃ for 16 hours. The chemical composition of the roasted product is Ba 2 sc 0.94 o 3 F:Eu 0.06Phosphor powder, its X-ray powder diffraction pattern (Co target, λ = 0.178892nm) such as figure 2 As shown, its excitation spectrum (under 612nm monitoring) see image 3 , it can be seen from the excitation spectrum that the phosphor can be effectively excited by ultraviolet or blue light in the range of 280-480nm, and has strong excitation peaks around 395nm and 464nm. Its emission spectrum see Figure 4 , it can be seen from the figure that the main emission peak is around 612nm, and the luminous intensity under excitati...

Embodiment 2-4

[0039] The preparation of embodiment 2-4 fluorescent powder is to take raw material according to the chemical composition and stoichiometric ratio of embodiment 2-4 in the table, prepare corresponding fluorescent powder according to the method of embodiment 1, obtain the chemical formula and relative luminous intensity of fluorescent powder See Table 3.

Embodiment 5

[0041] Weigh CaCO 3 4.8542g, BaCO 3 4.6374g, Sc 2 o 3 3.4478g, BaF 2 4.3831g, Eu 2 o 3 0.3519g, the above raw materials are all analytically pure, after the above raw materials are ground evenly, put into an alumina crucible and roast in air, the roasting temperature is 1320 ℃ for 8 hours. The chemical composition of the roasted product is Ba 0.97 Ca 0.97 ScO 3 F:Eu 0.04 The phosphor powder has an excitation spectrum wavelength range of 280-480nm and a main emission peak at around 612nm. The luminous intensities under excitation at 395nm and 464nm are shown in Table 3.

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Abstract

The present invention discloses fluorine oxide phosphor and a preparation method thereof. The phosphor comprises an inorganic compound, wherein the inorganic compound comprises an element M1, an element M2, an element M3, O and F, the element M1 is one or two selected from Ba, Sr, Ca, Mg and Zn and must contain Ba, the element M2 is one or two selected from Sc, Al, Ga, Y, La, Gd and Lu and must contain Sc, the element M3 is one or two selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb and must contain Eu, and the inorganic compound has the same crystal structure as Ba2ScO3F. The preparation method comprises: adopting compounds corresponding to the element M1, the element M2, the element M3 and F as raw materials, carrying out fine grinding, uniformly mixing, placing into a high temperature sintering furnace with a temperature of 1100-1500 DEG C to sinter for 0.5-20 h in air, and carrying out crushing, grinding, and grading post-treatment so as to obtain the finished product. The phosphor of the present invention has excellent light-emitting property and has strong excitations in an ultraviolet region and a blue light region. The phosphor preparation method of the present invention is simple and is easy to operate.

Description

technical field [0001] The invention relates to an oxyfluoride fluorescent powder that can be effectively excited by ultraviolet or blue light to emit red light and a preparation method thereof, belonging to the technical field of luminescent materials. Background technique [0002] Luminescent materials have been widely used in the fields of laser, lighting, display and optoelectronics, and play an irreplaceable role in the national economy and people's daily life. Among them, photoluminescent inorganic fluorescent materials doped with rare earth elements are the most active type in the research and application of luminescent materials. In recent years, light-emitting diodes (LEDs) have been widely used in the field of solid-state lighting for their advantages of energy saving, environmental protection, and long life, which cannot be compared with traditional lighting fixtures such as incandescent lamps and fluorescent lamps. [0003] YAG yellow powder matched with blue LE...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/86
Inventor 庄卫东钟继有徐会兵陈观通刘荣辉刘元红何华强
Owner GRIREM ADVANCED MATERIALS CO LTD
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