CN104818021A - Near-UV excited single matrix white phosphor and preparation method thereof - Google Patents
Near-UV excited single matrix white phosphor and preparation method thereof Download PDFInfo
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- CN104818021A CN104818021A CN201510169958.8A CN201510169958A CN104818021A CN 104818021 A CN104818021 A CN 104818021A CN 201510169958 A CN201510169958 A CN 201510169958A CN 104818021 A CN104818021 A CN 104818021A
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Abstract
The invention discloses a near-UV excited single matrix white phosphor and its preparation method. Bi<3+> ion is initiatively used as a blue light activator. Bi<3+> is doped into a matrix to emit blue light in near-UV light. A matrix Ca2Y3Sb3O14 is simultaneously doped with Bi<3+> and Eu<3+>. Under near-UV excitation, blue light emitted from Bi<3+> and orange light emitted from Eu<3+> are combined to obtain white light. The near-UV excited single matrix white phosphor is prepared at a non-reducing atmosphere by a high-temperature solid phase method. The main method comprises the following steps: weighing raw materials according to stoichiometric ratio of chemical composition of the phosphor, adding a cosolvent, mixing, fully grinding, calcining at high temperature of 1300-1500 DEG C for 3-8 h; cooling the above product to room temperature, and grinding to obtain the white phosphor. A white-light LED device is obtained by coating a near-UV LED chip with the phosphor. The white light has stable color development. Color reductibility is good. The technology is simple and has high luminous efficiency.
Description
Technical field
The invention belongs to inorganic fluorescent substances field, be specifically related to a kind of can under near ultraviolet excitation single substrate fluorescent powder sending white light and preparation method thereof.
Background technology
Energy-saving and environmental protection, volume are little owing to having for white light LEDs, long lifetime, fast response time, all solid state, shock resistance and the plurality of advantages such as safety performance is good and be widely used in illumination and display field.
At present, the implementation of business-like white light LED part mainly contains two kinds: one is coated with Y on GaInN blue chip
3al
5o
12: Ce
3+for the yellow fluorescent powder of representative, utilize the gold-tinted of fluorescent material and the blue light of chip and be compounded to form white light.The glow color of this device changes, color reducibility, color development poor stability with the change of fluorescent material thickness and drive current, and luminescence is more dazzling, and colour rendering index is low, and the occasion high to display object color cannot use.The second applies red, green, blue three primary colors fluorescent powder near ultraviolet (350 ~ 410nm) chip, is in harmonious proportion the three primary colours light that sends of fluorescent material and obtain white light.Compared to the first, the color developing effect of this device is only determined by fluorescent material and is subject to the impact of chip very little, and therefore its colour rendering index is better.But there is color between three kinds of fluorescent material due to mixing to absorb again and proportioning regulation and control problem, the luminous efficiency of device and color reducibility are a greater impact.
Summary of the invention
In order to solve the problem, the object of the invention is to, provide a kind of can by the single-matrix white fluorescent powder Ca of near ultraviolet excitation
2y
3 (1-x-y)sb
3o
14: xBi
3+, yEu
3+, near-ultraviolet light wavelength band of the present invention is 350nm-370nm.This fluorescent material is at Ca
2y
3 (1-x-y)sb
3o
14bi is mixed in substrate material
3+and Eu
3two kinds of exciting agents, by Bi
3+the blue light launched and Eu
3the orange red trimmed book launched is levied combination and is namely obtained white light.Being coated in by this fluorescent material near ultraviolet LED chip is obtainable white light LED part, and the color development of its white light is stablized, and color reducibility is good, and technique is simple, and luminous efficiency is high.
In order to realize above-mentioned task, the present invention takes following technical solution:
(1) a single-matrix white fluorescent material near ultraviolet excitation, is characterized in that, chemical formula is: Ca
2y
3 (1-x-y)sb
3o
14: xBi
3+, yEu
3+, wherein, 0.08≤x≤0.2,0<y≤0.15.
(2) a kind of preparation method of single-matrix white fluorescent material, it is characterized in that, described preparation method comprises: by calcium containing compound, containing yttrium compound, bismuth-containing compound, mix containing europium compound and solubility promoter boron-containing compound, calcine 3-8h at 1300 ~ 1500 DEG C, cool and obtain described single-matrix white fluorescent material.
Described calcium containing compound is at least one in the oxide compound of calcium or oxysalt, described bismuth-containing compound is the oxide compound of bismuth, described contains at least one in the oxide compound or oxysalt that yttrium compound is yttrium, and described contains at least one in the oxide compound or oxysalt that europium compound is europium.
Described solubility promoter is preferably H
3bO
3, its mass percent accounting for raw material is 3% ~ 5%.
Compared with prior art, the invention has the advantages that:
By screening a large amount of substrate materials, prepare stibnate substrate material (the i.e. Ca with " the mixed arrangement of positively charged ion " feature
2y
3sb
3o
14), make Ca
2y
3sb
3o
14: Bi
3+, Eu
3+excitation wavelength (350-370nm) near ultraviolet LED chip can be mated well, this material can transmitting white, and can regulate and control spectrum, and the color development of its white light is stablized, and color reducibility is good, and luminous efficiency is high.Select trivalent bismuth and trivalent europium as activator ion, making material preparation process without the need to using reducing atmosphere, simplifying equipment, reducing cost, without waste water and gas discharge, environmentally friendly.
Accompanying drawing explanation
Fig. 1 is the X-ray diffractogram that embodiment 1 obtains single-matrix white fluorescent material.
Fig. 2 is that embodiment 1 obtains the excitation spectrum of single-matrix white fluorescent material under 615nm monitoring.
Fig. 3 is that embodiment 1 obtains the emmission spectrum of single-matrix white fluorescent material under 350nm near ultraviolet excitation.
Fig. 4 is the X-ray diffractogram that embodiment 2 obtains single-matrix white fluorescent material.
Fig. 5 is that embodiment 2 obtains the excitation spectrum of single-matrix white fluorescent material under 615nm monitoring.
Fig. 6 is that embodiment 2 obtains the emmission spectrum of single-matrix white fluorescent material under 350nm near ultraviolet excitation.
Fig. 7 is the X-ray diffractogram that embodiment 3 obtains single-matrix white fluorescent material.
Fig. 8 is that embodiment 3 obtains the excitation spectrum of single-matrix white fluorescent material under 615nm monitoring.
Fig. 9 is that embodiment 3 obtains the emmission spectrum of single-matrix white fluorescent material under 350nm near ultraviolet excitation.
Figure 10 is the X-ray diffractogram that embodiment 4 obtains single-matrix white fluorescent material.
Figure 11 is that embodiment 4 obtains the excitation spectrum of single-matrix white fluorescent material under 615nm monitoring.
Figure 12 is that embodiment 4 obtains the emmission spectrum of single-matrix white fluorescent material under 350nm near ultraviolet excitation.
Figure 13 is the position in the chromaticity diagram (CIE 1931) formulated in International Commission on Illumination of the illuminant colour coordinate of the obtained single-matrix white fluorescent material of embodiment 1,2,3,4 and color temperature value.
Figure 14 is matrix Ca
2y
3sb
3o
14reflection spectrum.
Figure 15 is the obtained Bi that singly adulterates
3+ion fluorescence powder Ca
2y
2.55sb
3o
14: 0.15Bi
3+excitation spectrum under 460nm monitoring.
Figure 16 is the obtained Bi that singly adulterates
3+ion fluorescence powder Ca
2y
2.55sb
3o
14: 0.15Bi
3+emmission spectrum under 350nm excites.
Be described in more detail below in conjunction with the particular content of drawings and Examples to invention.
Embodiment
The object of the invention is to synthesize the white fluorescent powder that can be applied to LED component, and select Bi in a creative way
3+ion is as blue-light excited dose.
Bi
3+why ion is not widely used, and is because Bi
3+although ion can launch blue light in matrix, it excites wave band to be mainly positioned at ultraviolet region, but not near-ultraviolet light district, as document Z.Yanget al./Journal of Alloys and Compounds 559 (2013) 142-145 reports Ca
12al
14o
32cl
2: Bi
3+, it excites wave band peak value to be 320nm.
Figure 15 illustrates the Bi that only adulterates
3+fluorescent material Ca
2y
2.55sb
3o
14: 0.15Bi
3+effectively can be excited by near-ultraviolet light, determine that excitation wavelength is 350nm, and in Figure 16 emmission spectrum, Emission Spectrum Peals is positioned at 460nm, namely singly adulterate Bi
3+ion fluorescence powder Ca
2y
2.55sb
3o
14: 0.15Bi
3+blue light is launched, its blue light launched and Eu under near-ultraviolet light
3+the orange red light combination of launching obtains white light.Because activator ion is high-valence state, thus the present invention can prepare the material of blue light-emitting first under non-reducing atmosphere.
The formation of fluorescent material is " parent lattice " and " activator ion ", and Figure 14 demonstrates Ca
2y
3sb
3o
14matrix does not absorb UV-light, thus can not by near ultraviolet excitation, and namely it is not luminous under near ultraviolet excitation.And Bi
3+with the acting in conjunction of matrix, make under near-ultraviolet light 350-370nm excites, Bi
3+at particular substrate Ca
2y
3sb
3o
14middle blue light-emitting, it is as the single-matrix white fluorescent material Ca of exciting agent synthesis
2y
3 (1-x-y)sb
3o
14: xBi
3+, yEu
3+near ultraviolet LED chip can be mated well.
Single-matrix white fluorescent material Ca prepared by the present invention
2y
3 (1-x-y)sb
3o
14: xBi
3+, yEu
3+, its effective excitation wave section is positioned at 250 ~ 370nm, and the strongest excitation wave section is positioned at 320 ~ 370nm, and wherein 350 ~ 370nm belongs to near-ultraviolet light district.
Single-matrix white fluorescent material Ca prepared by the present invention
2y
3 (1-x-y)sb
3o
14: xBi
3+, yEu
3+, when 0.08≤x≤0.2 in its chemical constitution and 0.02<y≤0.15 time, under 350 ~ 370nm near ultraviolet excitation, glow color is white light; As y > 0.15, glow color is orange red light.
Single-matrix white fluorescent material prepared by the present invention, the color temperature value of its transmitting white is relevant with the value of x, y.When x fixes, the value of y is less, and color temperature value is larger, is namely more partial to cold white light, and the value of y is larger, and color temperature value is larger, and color temperature value is less, is namely more partial to warm white; Namely the color temperature value of white light can be controlled by the value changing x, y in its composition, thus can meet the different requirements of different application field to light emission color temperature.
In embodiment, by x-ray powder diffraction instrument (Bruker D8ADVANCE) working sample thing phase; With FLS920T type fluorescence spectrophotometer measure sample emmission spectrum;
Embodiment 1:
According to described fluorescent material x, y span, get x=0.15, y=0.05, then fluorescent material chemical constitution is Ca
2y
2.4sb
3o
14: 0.15Bi
3+, 0.05Eu
3+.By this chemical constitution, the proportioning calculating each raw material is as shown in table 1.
Table 1:Ca
2y
2.4sb
3o
14: 0.15Bi
3+, 0.05Eu
3+the proportioning raw materials of fluorescent material
| Raw material | Quality |
| CaCO 3 | 2.022 gram |
| Y 2O 3 | 2.709 gram |
| Sb 2O 3 | 4.417 gram |
| Bi 2O 3 | 1.048 gram |
| Eu 2O 3 | 0.264 gram |
| H 3BO 3 | 0.3 gram |
Accurately take above-mentioned raw materials, after carefully grinding in agate mortar, load little alumina crucible.Calcine 8 hours at 1350 DEG C, after naturally cooling to room temperature, take out, resultant is carried out pulverize, grind, white fluorescent powder material in this embodiment 1 obtained.
As shown in Figure 1, X-ray diffraction (XRD) collection of illustrative plates of example 1 sample, warp and Ca
2y
3sb
3o
14standard card contrast, determine that gained sample is pure phase.
As shown in Figure 2, the excitation spectrum of example 1 sample, the excitation wave section of sample is positioned at 320-370nm.
As shown in Figure 3, the emmission spectrum of 1 sample is implemented.Its emmission spectrum is made up of the line spectrum between the wide band(ed)spectrum between 370 ~ 560nm and 560 ~ 650nm.As calculated, as shown in figure 13, the chromaticity coordinates value of its luminescence is (0.38,0.30), and color temperature value is 3500K.
Embodiment 2:
According to described fluorescent material x, y span, x=0.15, y=0.02, then fluorescent material chemical constitution is Ca
2y
2.49sb
3o
14: 0.15Bi
3+, 0.02Eu
3+.By this chemical constitution, the proportioning calculating each raw material is as shown in table 2.
Table 2:Ca
2y
2.4sb
3o
14: 0.15Bi
3+, 0.02Eu
3+the proportioning raw materials of fluorescent material
| Raw material | Quality |
| CaCO 3 | 2.022 gram |
| Y 2O 3 | 2.811 gram |
| Sb 2O 3 | 4.417 gram |
| Bi 2O 3 | 1.048 gram |
| Eu 2O 3 | 0.105 gram |
| H 3BO 3 | 0.3 gram |
Accurately take above-mentioned raw materials, after carefully grinding in agate mortar, load little alumina crucible.Calcine 6 hours at 1400 DEG C, after naturally cooling to room temperature, take out, resultant is carried out pulverize, grind, obtained example materials.
As shown in Figure 4, X-ray diffraction (XRD) collection of illustrative plates of example 2 sample, warp and Ca
2y
3sb
3o
14standard card contrast, determine that gained sample is pure phase.
As shown in Figure 5, the excitation spectrum of example 2 sample, the excitation wave section of sample is positioned at 320-370nm.
As shown in Figure 6, the emmission spectrum of 2 samples is implemented.Its emmission spectrum is made up of the line spectrum between the wide band(ed)spectrum between 370 ~ 560nm and 560 ~ 650nm.As calculated, as shown in figure 13, the chromaticity coordinates value of its luminescence is (0.29,0.27), and color temperature value is 10000K.
Embodiment 3:
According to described fluorescent material x, y span, get x=0.15, y=0.03, then fluorescent material chemical constitution is Ca
2y
2.52sb
3o
14: 0.15Bi
3+, 0.03Eu
3+.By this chemical constitution, the proportioning calculating each raw material is as shown in table 3.
Table 3:Ca
2y
2.52sb
3o
14: 0.15Bi
3+, 0.03Eu
3+the proportioning raw materials of fluorescent material
| Raw material | Weight |
| CaCO 3 | 2.022 gram |
| Y 2O 3 | 2.777 gram |
| Sb 2O 3 | 4.417 gram |
| Bi 2O 3 | 1.048 gram |
| Eu 2O 3 | 0.158 gram |
| H 3BO 3 | 0.3 gram |
Accurately take above-mentioned raw materials, after carefully grinding in agate mortar, load little alumina crucible.Calcine 4 hours at 1500 DEG C, after naturally cooling to room temperature, take out, resultant is carried out pulverize, grind, obtained example materials.
As shown in Figure 7, X-ray diffraction (XRD) collection of illustrative plates of example 3 sample, warp and Ca
2y
3sb
3o
14standard card contrast, determine that gained sample is pure phase.
As shown in Figure 8, the excitation spectrum of example 3 sample, the excitation wave section of sample is positioned at 320-370nm.
As shown in Figure 9, the emmission spectrum of 3 samples is implemented.Its emmission spectrum is made up of the line spectrum between the wide band(ed)spectrum between 370 ~ 560nm and 560 ~ 650nm.As calculated, as shown in figure 13, the chromaticity coordinates value of its luminescence is (0.34,0.29), and color temperature value is 5000K.
Embodiment 4:
According to described fluorescent material x, y span, get x=0.15, y=0.1, then fluorescent material chemical constitution is Ca
2y
2.25sb
3o
14: 0.15Bi
3+, 0.1Eu
3+.By this chemical constitution, the proportioning calculating each raw material is as shown in table 4.
Table 4:Ca
2y
2.31sb
3o
14: 0.15Bi
3+, 0.1Eu
3+the proportioning raw materials of fluorescent material
| Raw material | Quality |
| CaCO 3 | 2.022 gram |
| Y 2O 3 | 2.54 gram |
| Sb 2O 3 | 4.417 gram |
| Bi 2O 3 | 1.048 gram |
| Eu 2O 3 | 0.528 gram |
| H 3BO 3 | 0.3 gram |
Accurately take above-mentioned raw materials, after carefully grinding in agate mortar, load little alumina crucible.Calcine 6 hours at 1400 DEG C, after naturally cooling to room temperature, take out, resultant is carried out pulverize, grind, obtained example materials.
As shown in Figure 10, X-ray diffraction (XRD) collection of illustrative plates of example 4 sample, warp and Ca
2y
3sb
3o
14standard card contrast, determine that gained sample is pure phase.
As shown in figure 11, the excitation spectrum of example 4 sample, the excitation wave section of sample is positioned at 320-370nm.
As shown in figure 12, the emmission spectrum of 4 samples is implemented.Its emmission spectrum is made up of the line spectrum between the wide band(ed)spectrum between 370 ~ 560nm and 560 ~ 650nm.As calculated, as shown in figure 13, the chromaticity coordinates value of its luminescence is (0.40,0.31), and color temperature value is 3000K.
Claims (4)
1. a single-matrix white fluorescent material near ultraviolet excitation, is characterized in that, chemical formula is: Ca
2y
3 (1-x-y)sb
3o
14: xBi
3+, yEu
3+, wherein, 0.08≤x≤0.2,0<y≤0.15.
2. the preparation method of single-matrix white fluorescent material according to claim 1, is characterized in that, described preparation method comprises:
By calcium containing compound, containing yttrium compound, bismuth-containing compound, containing europium compound and the mixing of solubility promoter boron-containing compound, calcine 3-8h at 1300 ~ 1500 DEG C, cool and obtain described single-matrix white fluorescent material.
3. the preparation method of white fluorescent powder as claimed in claim 2, it is characterized in that, described calcium containing compound is at least one in the oxide compound of calcium or oxysalt, described bismuth-containing compound is the oxide compound of bismuth, described contains at least one in the oxide compound or oxysalt that yttrium compound is yttrium, and described contains at least one in the oxide compound or oxysalt that europium compound is europium.
4. the preparation method of white fluorescent powder as claimed in claim 2, it is characterized in that, described solubility promoter is preferably H
3bO
3, its mass percent accounting for raw material is 3% ~ 5%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419798A (en) * | 2015-12-23 | 2016-03-23 | 江苏师范大学 | Preparation method and application of orange-red antimonate fluorescent material |
| CN106590646A (en) * | 2016-10-13 | 2017-04-26 | 长安大学 | Near-UV excitation blue light fluorescent powder used for white light LED and preparation method thereof |
| CN107256920A (en) * | 2017-08-15 | 2017-10-17 | 苏州轻光材料科技有限公司 | A kind of high luminous intensity burst of ultraviolel white light LEDs and preparation method thereof |
| CN109825296A (en) * | 2019-03-05 | 2019-05-31 | 常州工程职业技术学院 | A kind of europium ion Eu3+Fluorine antimonate orange red fluorescent powder of activation and preparation method thereof |
| CN110872512A (en) * | 2018-08-30 | 2020-03-10 | 长春理工大学 | Bismuth ion activated calcium fluoroaluminate blue fluorescent powder and preparation method thereof |
| CN115820255A (en) * | 2022-12-21 | 2023-03-21 | 云南大学 | Single-matrix warm white fluorescent powder and preparation method thereof |
| CN116333739A (en) * | 2023-03-27 | 2023-06-27 | 河北工业大学 | Activator-free matrix luminous red fluorescent powder and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133801A1 (en) * | 2003-12-19 | 2005-06-23 | Nec Corporation | Red fluorescent material, white light emitting diode using red fluorescent material, and lighting device using white light emitting diode |
| EP1571715A1 (en) * | 2004-03-04 | 2005-09-07 | Nan Ya Plastics Corporation | Method for producing white light emission by means of secondary light exitation and its product |
| CN101475802A (en) * | 2009-01-09 | 2009-07-08 | 中国科学院上海硅酸盐研究所 | Multiple antimonate luminescent materials for white light LED and preparation thereof |
-
2015
- 2015-04-09 CN CN201510169958.8A patent/CN104818021B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133801A1 (en) * | 2003-12-19 | 2005-06-23 | Nec Corporation | Red fluorescent material, white light emitting diode using red fluorescent material, and lighting device using white light emitting diode |
| EP1571715A1 (en) * | 2004-03-04 | 2005-09-07 | Nan Ya Plastics Corporation | Method for producing white light emission by means of secondary light exitation and its product |
| CN101475802A (en) * | 2009-01-09 | 2009-07-08 | 中国科学院上海硅酸盐研究所 | Multiple antimonate luminescent materials for white light LED and preparation thereof |
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| CN105419798A (en) * | 2015-12-23 | 2016-03-23 | 江苏师范大学 | Preparation method and application of orange-red antimonate fluorescent material |
| CN106590646A (en) * | 2016-10-13 | 2017-04-26 | 长安大学 | Near-UV excitation blue light fluorescent powder used for white light LED and preparation method thereof |
| CN106590646B (en) * | 2016-10-13 | 2019-03-15 | 长安大学 | A kind of white light LEDs blue light fluorescent powder of near ultraviolet excitation and preparation method thereof |
| CN107256920A (en) * | 2017-08-15 | 2017-10-17 | 苏州轻光材料科技有限公司 | A kind of high luminous intensity burst of ultraviolel white light LEDs and preparation method thereof |
| CN110872512A (en) * | 2018-08-30 | 2020-03-10 | 长春理工大学 | Bismuth ion activated calcium fluoroaluminate blue fluorescent powder and preparation method thereof |
| CN109825296A (en) * | 2019-03-05 | 2019-05-31 | 常州工程职业技术学院 | A kind of europium ion Eu3+Fluorine antimonate orange red fluorescent powder of activation and preparation method thereof |
| CN115820255A (en) * | 2022-12-21 | 2023-03-21 | 云南大学 | Single-matrix warm white fluorescent powder and preparation method thereof |
| CN115820255B (en) * | 2022-12-21 | 2023-09-26 | 云南大学 | Single-matrix warm white fluorescent powder and preparation method thereof |
| CN116333739A (en) * | 2023-03-27 | 2023-06-27 | 河北工业大学 | Activator-free matrix luminous red fluorescent powder and preparation method thereof |
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