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A Ce3+, Mn2+ double-doped apatite structure nitrogen oxide white light phosphor and its preparation method and application

A nitrogen oxide and phosphor technology, which is applied in the field of apatite structure nitrogen oxide white light phosphor and its preparation, can solve the problems of difficult control of luminescence ratio and difficult realization of color regulation, and achieve good industrialization prospects and application prospects , good thermal stability, and the effect of simplifying the process flow

Active Publication Date: 2019-02-05
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because there is only one activator, the luminescence ratio of the two lattices is not easy to control, making it difficult to achieve color control

Method used

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  • A Ce3+, Mn2+ double-doped apatite structure nitrogen oxide white light phosphor and its preparation method and application
  • A Ce3+, Mn2+ double-doped apatite structure nitrogen oxide white light phosphor and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Mg 1.94 Y 2.94 Si 3 o 11 N: 0.06Ce 3+ , 0.06Mn 2+ Phosphor powder preparation

[0029] Its preparation method is as follows:

[0030] According to the molar ratio of each element in the molecular formula, weigh the corresponding mass of MgO 0.391g, Y 2 o 3 1.6597g, SiO 2 0.6759g, Si 3 N 4 0.1754g, CeO 2 0.0516g, MnCO 3 0.0345g, and the purity of the above raw materials is above 99%. Grind the above-mentioned raw material mixture in an agate mortar evenly, put it into a corundum crucible, and raise the temperature to 900°C at a heating rate of 10°C / min in a reducing atmosphere containing 5v% hydrogen gas, and bake for 6 hours. Cool to room temperature. The pre-fired sample was taken out and ground again, then raised to 1400°C at a rate of 10°C / min, kept at a constant temperature for 6 hours, and cooled to room temperature. After the obtained sintered product is crushed, it is finely ground with a ball mill and sieved to obtain a solid powder ...

Embodiment 2

[0033] Example 2: Mg 1.77 Ca 0.2 Y 2.97 Si 3 o 11 N: 0.03Ce 3+ , 0.03Mn 2+ Phosphor powder preparation

[0034] Its preparation method is as follows:

[0035] According to the molecular formula, weigh the corresponding mass of MgO 0.3567g, CaCO 3 0.1001g, Y 2 o 3 1.6766g, SiO 2 0.6759g, Si 3 N 4 0.1754g, CeO 2 0.0258g, MnCO 3 0.0172g, and the purity of the above raw materials is above 99%. Grind the above-mentioned raw material mixture in an agate mortar evenly, put it into a corundum crucible, and raise the temperature to 1000°C at a heating rate of 15°C / min in a reducing atmosphere containing 5v% hydrogen gas, and roast for 6 hours. Cool to room temperature. The pre-fired sample was taken out and ground again, then raised to 1500°C at a speed of 15°C / min, calcined for 8 hours, and cooled to room temperature. After the obtained sintered product is crushed, it is finely ground with a ball mill and sieved to obtain a solid powder with a particle size of 3 t...

Embodiment 3

[0038] Example 3: Mg 1.94 Y 2.44 La 0.5 Si 3 o 11 N: 0.06Ce 3+ ,0.06Mn 2+ Phosphor powder preparation

[0039] Its preparation method is as follows:

[0040] Weigh the corresponding mass of MgO 0.391g and Y respectively according to the molecular formula 2 o 3 1.3774g, La 2 o 3 0.4073g 、SiO2 2 0.6759g, Si 3 N 4 0.1754g, CeO 2 0.0516g, MnCO 3 0.0345g, and the purity of the above raw materials is above 99%. Grind the above-mentioned raw material mixture in an agate mortar evenly, put it into a corundum crucible, and raise the temperature to 1000°C at a heating rate of 10°C / min in a reducing atmosphere containing 5v% hydrogen gas, and bake for 8 hours. Cool to room temperature. The pre-fired sample was taken out and ground again, then raised to 1450°C at a speed of 10°C / min, calcined for 8 hours, and cooled to room temperature. After the obtained sintered product is crushed, it is finely ground with a ball mill and sieved to obtain a solid powder with a pa...

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Abstract

The invention discloses Ce<3+> and Mn<2+> double doped apatite structure nitrogen oxide white phosphor and a preparation method and application thereof. The white phosphor has a chemical formula of Mg2-a-yAaY3-b-xBbSi3-cCcO11N: xCe<3+>, yMn<2+>, wherein A represents a composition of one or two of Sr and Ca, B represents a composition of one or more of Gd, La and Sc, C represents Ge, x, y, a, b and c represent mole fractions, x is greater than or equal to 0.01 and less than or equal to 0.12, y is greater than or equal to 0.01 and less than or equal to 0.20, a is greater than or equal to 0 and less than or equal to 0.2, b is greater than or equal to 0 and less than or equal to 0.5 and c is greater than or equal to 0 and less than or equal to 0.9. The white phosphor is used in a LED light source device, can produce high quality white light, can greatly simplify the process, and has good industrialization and application prospects.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a fluorescent powder applied to semiconductor lighting, in particular to a Ce3+, Mn2+ dual-doped apatite structure nitrogen oxide white light that can be effectively excited by a near-ultraviolet LED chip to emit white light Phosphor powder and its preparation method and application. Background technique [0002] White LED is known as the next-generation lighting source because of its low power consumption, long life, environmental friendliness, shock resistance, and small size. At present, there are mainly three manufacturing methods of white light LEDs based on phosphor conversion. : Blue InGaN chip composite yellow YAG (YAG:Ce 3+ ) Phosphor powder. This method has a simple structure and relatively low manufacturing process requirements. However, due to the lack of red components in the emission spectrum of YAG phosphors, the white light produced i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/79H01L33/50
CPCC09K11/0883C09K11/7774C09K11/7775H01L33/502H01L2933/0041Y02B20/00
Inventor 潘再法李伟强陈加成张露露郑遗凡
Owner ZHEJIANG UNIV OF TECH
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