CN107446573A - A kind of UV excited white lights LED fluorescent material and preparation method thereof - Google Patents
A kind of UV excited white lights LED fluorescent material and preparation method thereof Download PDFInfo
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- CN107446573A CN107446573A CN201710704190.9A CN201710704190A CN107446573A CN 107446573 A CN107446573 A CN 107446573A CN 201710704190 A CN201710704190 A CN 201710704190A CN 107446573 A CN107446573 A CN 107446573A
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- 239000000463 material Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 92
- 230000005284 excitation Effects 0.000 claims abstract description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 30
- 239000003292 glue Substances 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 10
- 150000004645 aluminates Chemical class 0.000 claims description 10
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 10
- 239000000084 colloidal system Substances 0.000 claims description 10
- 239000000741 silica gel Substances 0.000 claims description 10
- 229910002027 silica gel Inorganic materials 0.000 claims description 10
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000002362 mulch Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 9
- 238000005286 illumination Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009877 rendering Methods 0.000 abstract description 3
- 238000001228 spectrum Methods 0.000 abstract description 2
- 229910002601 GaN Inorganic materials 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 241001025261 Neoraja caerulea Species 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000695 excitation spectrum Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
- C09K11/562—Chalcogenides
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/61—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
- C09K11/617—Silicates
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- C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
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- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
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Abstract
The invention belongs to LED white emitting fluorescent powder technical field, a kind of more particularly to UV excited white lights LED fluorescent material and preparation method thereof, mixed using red light fluorescent powder, green emitting phosphor and blue colour fluorescent powder three-color phosphor according to rational proportioning and prepare white light LEDs, white light is produced by ultraviolet excitation, preparation method advantages of simple, it is low to prepare cost；Excitation corresponding to fluorescent material is high, and white-light spectrum caused by burst of ultraviolel is preferable, and color turgor reaches more than 90%, and colour rendering index is high, and illumination effect is high, adjustable color.
Description
Technical field
The invention belongs to LED white emitting fluorescent powder technical field, more particularly to a kind of UV excited white lights LED fluorescent material and
Its preparation method.
Background technology
In recent years, the gradually stepping up for luminous efficiency with light emitting diode (LED) and being gradually reduced for cost, LED make
It is a kind of solid-state semiconductor material that can convert electrical energy into visible ray for a kind of new blue environment-friendly type solid light source
Material, compared with other light sources, LED have energy-conservation, safety, long lifespan, energy consumption are low, generate heat less, brightness height, waterproof, shockproof, easy tune
The advantages that light, light beam are concentrated, are easy to maintenance, has become modern illumination development and the inexorable trend in future, white light LEDs are referred to as
" 21 century blue-light source ".
At present, gallium nitride based LED obtains white light main method and had：Blue-ray LED+yellow fluorescent powder, three-color LED synthesis are white
3 kinds of light, purple LED+three-color phosphor methods.Commercial white light LEDs are to utilize the GaN for launching 450-470 nano blue lights
Matrix LED chip and the blue light of surface coating excite the yttrium aluminate fluorescent material of the fluorescent material, mainly cerium dopping of yellow emission.This
Kind of commercial fluorescent material is there is also some shortcomings, the unstability of mainly poor color saturation and colour temperature.Color saturation compared with
Difference is due to lack red light portion in white light, and the unstability of colour temperature is due to that use for a long time moves back LED and fluorescent material performance
Caused by change.
Burst of ultraviolel white LED light source is to excite the fluorescent material of red, blue, blue three primary colours assorted glimmering to produce by LED light
Light, remix what these fluorescence and LED light were realized.This white light LEDs refer to because three primary colours are various, thus with high colour developing
Number, high illumination effect, and adjustable color, and this fluorescence system is readily available, so that this mode turns into instantly
Research emphasis and focus, and be expected to turn into following white LED light source research dominant direction.
Coordinate red blue phosphor to prepare white light LEDs as excitaton source using ultraviolet LED, due to different substrates fluorescent material it
Between there is radiation to reabsorb, can increase energy loss, reduce luminous efficiency, thus the single-phase fluorescent material that excites of ultraviolet LED into
For main flow development trend；Reported ultraviolet LED excites single-phase fluorescent material to have a lot, in application number CN106929011A
The white emitting fluorescent powder that a kind of ultraviolet LED excites is provided in state's patent of invention, its chemical general formula is M1-x-y- zSmxTbyTmzAlSiN3-2(x+y+z)/2, wherein：M is at least one of Ca, Sr, Ba, 0.001≤x≤0.2,0.001≤y≤
0.1,0.001≤z≤0.2, the white emitting fluorescent powder can launch white light under wavelength 250-390nm ultraviolet excitations, and it is excited
Optical wavelength is shorter, and excitation spectrum scope is wide.
The content of the invention
Goal of the invention：In order to overcome problem above, it is an object of the invention to provide a kind of UV excited white lights LED fluorescent material
And preparation method thereof.
Technical scheme：One of purpose of the present invention is to provide a kind of UV excited white lights LED fluorescent material, including with
The component of lower parts by weight：Red light fluorescent powder 2-6 parts, green light fluorescent powder 1-3 parts, blue light fluorescent powder 1-3 parts, wherein described feux rouges
Fluorescent material is RE borate base fluorescent powder, and described green light fluorescent powder is nitrogen oxides, sulfide, aluminate, phosphatic
One or more mixtures, described blue light fluorescent powder are one or more mixtures of aluminium borate or fluosilicate.
Preferably, the average grain diameter of described red light fluorescent powder, green light fluorescent powder and blue light fluorescent powder is 5-20 μm.
Preferably, another object of the present invention is to provide a kind of white light LEDs preparation method, comprises the following steps：Weigh
Red light fluorescent powder 2-6 parts, green light fluorescent powder 1-3 parts, blue light fluorescent powder 1-3 parts, wherein described red light fluorescent powder is rare earth-boron
Hydrochlorate base fluorescent powder, described green light fluorescent powder are nitrogen oxides, sulfide, aluminate, phosphatic one or more mixing
Thing, described blue light fluorescent powder are one or more mixtures of aluminium borate or fluosilicate, by above-mentioned fluorescent material respectively with
Colloid is mixed to get red fluorescent glue, green fluorescence glue and blue fluorescent glue, and ultraviolet source is connected to substrate by UV LED chip and is made,
Red fluorescent glue, green fluorescence glue and blue fluorescent glue are made into the arrangement of dot matrix unit interval to be covered on UV LED chip, appearance covering
Sealing after protective layer, produce UV excited white lights LED.
Preferably, described colloid is silica gel, and the quality of fluorescent material accounts for the 35-45% of fluorescent material and silica gel gross mass.
Preferably, described mixing uses ball milling mixing, and the abrading-ball of addition is diameter 5-8mm and diameter 3-5mm according to weight
Amount is than (1-3):(2-6) is mixed.
Preferably, described ball milling mixing temperature is 35-55 DEG C.
Preferably, described white light LEDs send white light by ultraviolet excitation.
Above-mentioned technical proposal can be seen that the present invention and have the advantages that：UV excited white lights LED of the present invention
With fluorescent material and preparation method thereof, using red light fluorescent powder, green emitting phosphor and blue colour fluorescent powder three-color phosphor according to reasonable
Proportioning mix and prepare white light LEDs, white light is produced by ultraviolet excitation, preparation method advantages of simple, it is low to prepare cost；
Excitation corresponding to fluorescent material is high, and white-light spectrum caused by burst of ultraviolel is preferable, and color turgor reaches more than 90%, colour developing
Index is high, and illumination effect is high, adjustable color.
Embodiment
Following examples are used to illustrate the present invention, but can not be used for limiting the scope of the present invention.
Embodiment 1
A kind of UV excited white lights LED fluorescent material of the present embodiment, include the component of following parts by weight：Red light fluorescent powder 2
Part, 1 part of green light fluorescent powder, 1 part of blue light fluorescent powder, wherein described red light fluorescent powder is RE borate base fluorescent powder, it is described
Green light fluorescent powder for nitrogen oxides, sulfide, aluminate, phosphatic one or more mixtures, described blue phosphor
Powder is one or more mixtures of aluminium borate or fluosilicate.
The average grain diameter of described red light fluorescent powder, green light fluorescent powder and blue light fluorescent powder is 5 μm.
A kind of white light LEDs preparation method of the present embodiment, comprises the following steps：Weigh 2 parts of red light fluorescent powder, green-emitting fluorescent
1 part of powder, 1 part of blue light fluorescent powder, wherein described red light fluorescent powder is RE borate base fluorescent powder, described green light fluorescent powder
For nitrogen oxides, sulfide, aluminate, phosphatic one or more mixtures, described blue light fluorescent powder is aluminium borate
Or one or more mixtures of fluosilicate, above-mentioned fluorescent material is mixed to get to red fluorescent glue, green fluorescence glue with colloid respectively
And blue fluorescent glue, ultraviolet source are connected to substrate by UV LED chip and be made, by red fluorescent glue, green fluorescence glue and blue fluorescent glue
The arrangement of dot matrix unit interval is made to be covered on UV LED chip, sealing after appearance protective mulch, produces UV excited white lights
LED。
Described colloid is silica gel, and the quality of fluorescent material accounts for the 35% of fluorescent material and silica gel gross mass.
Described mixing uses ball milling mixing, and the abrading-ball of addition is for diameter 5mm and diameter 3mm according to weight than 1:2 are carried out
Mix.
Described ball milling mixing temperature is 35 DEG C.
Described white light LEDs send white light by ultraviolet excitation.
Embodiment 2
A kind of UV excited white lights LED fluorescent material of the present embodiment, include the component of following parts by weight：Red light fluorescent powder 6
Part, 3 parts of green light fluorescent powder, 3 parts of blue light fluorescent powder, wherein described red light fluorescent powder is RE borate base fluorescent powder, it is described
Green light fluorescent powder for nitrogen oxides, sulfide, aluminate, phosphatic one or more mixtures, described blue phosphor
Powder is one or more mixtures of aluminium borate or fluosilicate.
The average grain diameter of described red light fluorescent powder, green light fluorescent powder and blue light fluorescent powder is 20 μm.
A kind of white light LEDs preparation method of the present invention, comprises the following steps：Weigh 6 parts of red light fluorescent powder, green light fluorescent powder
3 parts, 3 parts of blue light fluorescent powder, wherein described red light fluorescent powder is RE borate base fluorescent powder, described green light fluorescent powder is
Nitrogen oxides, sulfide, aluminate, phosphatic one or more mixtures, described blue light fluorescent powder be aluminium borate or
One or more mixtures of fluosilicate, above-mentioned fluorescent material is mixed to get with colloid respectively red fluorescent glue, green fluorescence glue and
Blue fluorescent glue, ultraviolet source are connected to substrate by UV LED chip and are made, by red fluorescent glue, green fluorescence glue and blue fluorescent glue system
It is covered in into the arrangement of dot matrix unit interval on UV LED chip, sealing after appearance protective mulch, produces UV excited white lights LED.
Described colloid is silica gel, and the quality of fluorescent material accounts for the 45% of fluorescent material and silica gel gross mass.
Described mixing uses ball milling mixing, and the abrading-ball of addition is for diameter 8mm and diameter 5mm according to weight than 3:6 are carried out
Mix.
Described ball milling mixing temperature is 55 DEG C.
Described white light LEDs send white light by ultraviolet excitation.
Embodiment 3
A kind of UV excited white lights LED fluorescent material of the present embodiment, include the component of following parts by weight：Red light fluorescent powder 4
Part, 2 parts of green light fluorescent powder, 2 parts of blue light fluorescent powder, wherein described red light fluorescent powder is RE borate base fluorescent powder, it is described
Green light fluorescent powder for nitrogen oxides, sulfide, aluminate, phosphatic one or more mixtures, described blue phosphor
Powder is one or more mixtures of aluminium borate or fluosilicate.
The average grain diameter of described red light fluorescent powder, green light fluorescent powder and blue light fluorescent powder is 12 μm.
Another object of the present invention is to provide a kind of white light LEDs preparation method, comprised the following steps：Weigh feux rouges fluorescence
4 parts of powder, 2 parts of green light fluorescent powder, 2 parts of blue light fluorescent powder, wherein described red light fluorescent powder is RE borate base fluorescent powder, institute
The green light fluorescent powder stated is nitrogen oxides, sulfide, aluminate, phosphatic one or more mixtures, and described blue light is glimmering
Light powder is one or more mixtures of aluminium borate or fluosilicate, above-mentioned fluorescent material is mixed to get with colloid respectively red glimmering
Optical cement, green fluorescence glue and blue fluorescent glue, ultraviolet source are connected to substrate by UV LED chip and are made, by red fluorescent glue, green fluorescence
Glue and blue fluorescent glue are made the arrangement of dot matrix unit interval and are covered on UV LED chip, sealing after appearance protective mulch, produce
UV excited white lights LED.
Described colloid is silica gel, and the quality of fluorescent material accounts for the 40% of fluorescent material and silica gel gross mass.
Described mixing uses ball milling mixing, and the abrading-ball of addition is for diameter 6mm and diameter 4mm according to weight than 2:4 are carried out
Mix.
Described ball milling mixing temperature is 45 DEG C.
Described white light LEDs send white light by ultraviolet excitation.
The light efficiency of burst of ultraviolel white light LEDs and colour rendering index are as follows made from embodiment 1-3：
| Project | Light efficiency (lm/w) | Colour rendering index |
| Embodiment 1 | 77.8 | 78 |
| Embodiment 2 | 78.2 | 79 |
| Embodiment 3 | 79.9 | 80 |
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvement can also be made, these improvement also should be regarded as the present invention's
Protection domain.
Claims (7)
- A kind of 1. UV excited white lights LED fluorescent material, it is characterised in that：Include the component of following parts by weight：Red light fluorescent powder 2-6 Part, green light fluorescent powder 1-3 parts, blue light fluorescent powder 1-3 parts, wherein described red light fluorescent powder is RE borate base fluorescent powder, Described green light fluorescent powder is nitrogen oxides, sulfide, aluminate, phosphatic one or more mixtures, described blue light Fluorescent material is one or more mixtures of aluminium borate or fluosilicate.
- A kind of 2. UV excited white lights LED fluorescent material according to claim 1, it is characterised in that：Described feux rouges fluorescence The average grain diameter of powder, green light fluorescent powder and blue light fluorescent powder is 5-20 μm.
- A kind of 3. preparation method of the white light LEDs of the fluorescent material described in any one of 1-2 containing claim, it is characterised in that：Including Following steps：Red light fluorescent powder 2-6 parts, green light fluorescent powder 1-3 parts, blue light fluorescent powder 1-3 parts are weighed, wherein described feux rouges is glimmering Light powder is RE borate base fluorescent powder, and described green light fluorescent powder is nitrogen oxides, sulfide, aluminate, phosphatic one Kind or a variety of mixtures, described blue light fluorescent powder are one or more mixtures of aluminium borate or fluosilicate, will be above-mentioned Fluorescent material is mixed to get red fluorescent glue, green fluorescence glue and blue fluorescent glue with colloid respectively, and ultraviolet source connects for UV LED chip It is made in substrate, red fluorescent glue, green fluorescence glue and blue fluorescent glue are made into the arrangement of dot matrix unit interval is covered in UV LED chip On, sealing after appearance protective mulch, produce UV excited white lights LED.
- 4. the preparation method of white light LEDs according to claim 3, it is characterised in that：Described colloid is silica gel, fluorescent material Quality account for the 35-45% of fluorescent material and silica gel gross mass.
- 5. the preparation method of white light LEDs according to claim 3, it is characterised in that：Described mixing uses ball milling mixing, The abrading-ball of addition is diameter 5-8mm and diameter 3-5mm according to weight ratio（1-3）:（2-6）Mixed.
- 6. the preparation method of white light LEDs according to claim 5, it is characterised in that：Described ball milling mixing temperature is 35- 55℃。
- A kind of 7. white light LEDs made of white light LEDs preparation method according to claim 3, it is characterised in that：Described is white Light LED sends white light by ultraviolet excitation.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768441A (en) * | 2010-01-11 | 2010-07-07 | 海洋王照明科技股份有限公司 | Rare earth borate luminescent material and preparation material thereof |
| CN103173225A (en) * | 2013-04-03 | 2013-06-26 | 苏州大学 | Blue fluosilicate fluorescent powder as well as preparation method and application |
| CN103396800A (en) * | 2013-07-30 | 2013-11-20 | 苏州大学 | Boron aluminate-based blue fluorescent powder, preparation method and application |
| CN106098907A (en) * | 2016-06-13 | 2016-11-09 | 深圳市玲涛光电科技有限公司 | High colour gamut phosphor combination, white light LEDs and preparation method thereof |
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- 2017-08-18 CN CN201710704190.9A patent/CN107446573A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768441A (en) * | 2010-01-11 | 2010-07-07 | 海洋王照明科技股份有限公司 | Rare earth borate luminescent material and preparation material thereof |
| CN103173225A (en) * | 2013-04-03 | 2013-06-26 | 苏州大学 | Blue fluosilicate fluorescent powder as well as preparation method and application |
| CN103396800A (en) * | 2013-07-30 | 2013-11-20 | 苏州大学 | Boron aluminate-based blue fluorescent powder, preparation method and application |
| CN106098907A (en) * | 2016-06-13 | 2016-11-09 | 深圳市玲涛光电科技有限公司 | High colour gamut phosphor combination, white light LEDs and preparation method thereof |
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Application publication date: 20171208 |