CN109593521A - A kind of blue green light illuminator, LED component and preparation method thereof - Google Patents
A kind of blue green light illuminator, LED component and preparation method thereof Download PDFInfo
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- CN109593521A CN109593521A CN201811374867.8A CN201811374867A CN109593521A CN 109593521 A CN109593521 A CN 109593521A CN 201811374867 A CN201811374867 A CN 201811374867A CN 109593521 A CN109593521 A CN 109593521A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/55—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing beryllium, magnesium, alkali metals or alkaline earth metals
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Abstract
The present invention relates to a kind of blue green light illuminators, LED component and preparation method thereof, are related to LED technology field.Blue green light illuminator of the invention expresses formula MaSibN4‑cO4d:Eu2+, wherein M is alkali metal, 8≤a+4b≤40,0≤c≤4,0≤d≤5.LED component of the invention and preparation method thereof, method includes the following steps: S1: preparing carrier；S2: blue light emitting diode is installed on carrier；S3: mixing blue green light illuminator and transparent sealing body form mixture；S4: said mixture point is applied to above the blue light emitting diode and in carrier；S5: blue light emitting diode and carrier that point is coated with mixture in S3 are heating and curing.Blue green light fluorophor of the invention compensates for missing of the existing white light LEDs between 470nm-510nm, and it is smaller to the shadow of its all band sound, it is used in mixed way the brightness that LED component can be improved with the fluorophor of other colors, improves the luminous efficiency of other color fluorescence bodies.
Description
Technical field
The present invention relates to LED technology fields, more particularly to a kind of blue green light illuminator, LED component and preparation method thereof.
Background technique
White light LEDs are the compound photophores that the application fields such as general illumination, automotive lighting, backlight of television generally use
Part.Existing white light LEDs are usually to mix blue-light LED chip combination yellowish green fluorescent powder (YAG) to generate white light, spectrum
Figure is as shown in Figure 1, it can be found that the spectrum at 470nm-510nm lacks and discontinuous, the colour rendering index CRI of such light source
The color developments parameter such as (Color Rendering Index), R5, R6 and R12 is low, poor to the color developing effect of irradiation object.For
Improvement color developing effect, widespread practice are to add the red fluorescence powder of nitrogenate to improve the indexes such as CRI, but nitrogen
The red fluorescence powder low efficiency of object, so that the white light parts brightness decline of synthesis.
Blue green light is a part in sun natural light, and artificial LED light source supplements the part blue green light and can significantly improve
The comfort level of illumination.Existing method first is that being improved by the method for mixing bluish-green emitting phosphor and yellowish green emitting phosphor
The colour rendering indexs such as CRI, but the emission spectrum of bluish-green emitting phosphor is in the excitation spectrum position of yellowish green emitting phosphor, on the one hand
The transmitting light of bluish-green emitting phosphor can be absorbed, and on the other hand bluish-green emitting phosphor will affect shining for yellowish green emitting phosphor, from
And efficiency is caused to reduce.It is with the LED chip combination blue-light LED chip of blue green light and yellowish green there are also a kind of commonplace method
Color fluorescent powder, the missing in blue green light wavelength period of supplement blue-light LED chip combination yellowish green fluorescent powder, but blue green light LED
More complicated in the extension and chip fabrication technique of chip and blue-light LED chip, cost of manufacture is high.
Summary of the invention
Based on this, it is necessary to which the yellowish green emitting phosphor of blue green light phosphor combination used for existing white light LEDs makes
The problem that light source CRI index is low and blue green light LED chip manufacturing is at high cost provides a kind of blue green light fluorophor, and includes this
The LED component and preparation method thereof of blue green light fluorophor.
A kind of blue green light fluorophor, expression general formula are MaSibN4-cO4d:Eu2+, wherein M be alkali metal, 8≤a+4b≤40,0
≤ c≤4,0≤d≤5.
The blue green light fluorophor is made of using Eu as activator elements such as alkali metal element, nitrogen, silicon, oxygen, wherein alkali gold
Belong to ionic radius to become smaller, Eu2+Crystalline field 5d-4f orbit splitting energy level becomes smaller, and minimum emission level is got higher, and transits to stable base
State, energy level difference become larger, and launch wavelength shortens, and half-peak breadth narrows, so that hair of the glaucous spectral purity closer to LED chip
Penetrate peak.The luminescent spectrum of blue green light fluorophor intensity since 460nm is gradually increased, and is increased to peak value and is in 470-510nm
Between, decline at 520nm, it is continuous in the section, and half-peak breadth is not more than 50nm, which compensates for existing
Missing of the white light LEDs between 470-510nm, and it is smaller to the shadow of its all band sound, it is mixed with the fluorophor of other colors
It closes using the brightness that LED component can be improved, improves the luminous efficiency of other color fluorescence bodies.
M is one of Li, Na and K or a variety of in one of the embodiments,.
The blue green light illuminator is NaK (Li in one of the embodiments,3SiO4)2:Eu2+And NaLi3SiO4:Eu2+
One or two.
It should be understood that above-mentioned blue green light illuminator NaK (Li3SiO4)2:Eu2+And NaLi3SiO4:Eu2+Li can be used3N、
Sr3N2、EuN、Na3N、K3N and SiO2As raw material, after raw material is mixed in a certain ratio, in 1000 DEG C, 1000Mpa condition
It is calcined in high temperature and pressure furnace, and is passed through reducibility gas containing 5%H2N2, it is cooled to room temperature after calcining 4hrs, to obtain above-mentioned
Blue green light illuminator.
The launch wavelength of the blue green light illuminator is 470nm-510nm in one of the embodiments,.
A kind of LED component containing the above blue green light illuminator.
The blue green light fluorophor that the LED component uses, using Eu as activator, by elements such as alkali metal element, nitrogen, silicon, oxygen
It constitutes, wherein alkali metal ion radius becomes smaller, Eu2+Crystalline field 5d-4f orbit splitting energy level becomes smaller, and minimum emission level is got higher,
Stable ground state is transitted to, energy level difference becomes larger, and launch wavelength shortens, and half-peak breadth narrows, so that glaucous spectral purity is closer
In the emission peak of LED chip.The luminescent spectrum of blue green light fluorophor intensity since 460nm is gradually increased, and is increased to peak value
Between 470nm-510nm, decline at 520nm, it is continuous in the section, and half-peak breadth is not more than 50nm, the blue green light is glimmering
Body of light compensates for existing white light LEDs in the missing of 470nm-510nm, and smaller to the shadow of its all band sound, with other
The fluorophor of color is used in mixed way the brightness that LED component can be improved, and improves the luminous efficiency of other color fluorescence bodies.
The LED component includes carrier, reflector, blue light emitting diode, blue green light hair in one of the embodiments,
Body of light, transparent sealing body, electric connecting wire；The blue green light illuminator is scattered in the transparent sealing body, described transparent close
Envelope body is covered in above the blue light emitting diode, and the blue green light illuminator absorbs what the blue-light-emitting diode issued
Light, and it is converted into blue green light；The electric connecting wire connects the blue light emitting diode and the carrier.
The carrier is one of metallic-based support and ceramic base carrier or a variety of in one of the embodiments,.Its
Middle metallic-based support can choose Metal Substrate plastic packaging pinned carrier or Metal Substrate without pinned carrier.
The blue light emitting diode is the semiconductor light emitting two comprising III-VI race's element in one of the embodiments,
Pole pipe, the launch wavelength of the blue light emitting diode are 400nm-460nm.
The transparent sealing body is one in organic silica gel, epoxy glue and acrylic resin in one of the embodiments,
Kind is a variety of.
The electric connecting wire is one of gold thread, silver wire and copper wire or a variety of in one of the embodiments,.
A kind of production method of LED component, comprising the following steps:
S1: prepare carrier；
S2: blue light emitting diode is installed on carrier；
S3: mixing blue green light illuminator and transparent sealing body form mixture；
S4: said mixture point is applied to above the blue light emitting diode and in carrier；
S5: blue light emitting diode and carrier that point is coated with mixture in S3 are heating and curing.
The production method replaces blue green light LED chip in the prior art using blue green light fluorophor, reduces LED chip
Production, it is easy to operate, greatly reduce the cost of manufacture of LED component；Also, the blue green light fluorophor used in this method,
It using Eu as activator, is made of elements such as alkali metal element, nitrogen, silicon, oxygen, wherein alkali metal ion radius becomes smaller, Eu2+Crystalline field
5d-4f orbit splitting energy level becomes smaller, and minimum emission level is got higher, and transits to stable ground state, and energy level difference becomes larger, and launch wavelength becomes
Short, half-peak breadth narrows, so that emission peak of the glaucous spectral purity closer to LED chip.The hair of the blue green light fluorophor
Light spectrum intensity since 460nm is gradually increased, and is increased to peak value and is between 470-510nm, is declined at 520nm, at this
Section is continuous, and half-peak breadth be not more than 50nm, the blue green light fluorophor compensate for existing white light LEDs 470nm-510nm it
Between missing, and to the shadow of its all band sound it is smaller, being used together with blue light emitting diode can be improved LED component
Brightness improves the luminous efficiency of other color fluorescence bodies.
Compared with prior art, the invention has the following advantages:
Bluish-green fluorophor of the invention is made of, wherein alkali using Eu as activator elements such as alkali metal element, nitrogen, silicon, oxygen
Metal ion radius becomes smaller, Eu2+Crystalline field 5d-4f orbit splitting energy level becomes smaller, and minimum emission level is got higher, and transits to stable base
State, energy level difference become larger, and launch wavelength shortens, and half-peak breadth narrows, so that hair of the glaucous spectral purity closer to LED chip
Penetrate peak.The luminescent spectrum of blue green light fluorophor intensity since 460nm is gradually increased, and is increased to peak value and is in 470nm-
510nm declines at 520nm, continuous in the section, and half-peak breadth is not more than 50nm, which compensates for existing
Missing of the white light LEDs between 470nm-510nm, and, fluorescence with other colors smaller to the shadow of its all band sound
Body is used in mixed way the brightness that LED component can be improved, and improves the luminous efficiency of other color fluorescence bodies.
LED component of the invention use above-mentioned bluish-green fluorophor, compensate for existing white light LEDs 470nm-510nm it
Between missing, and to the shadow of its all band sound it is smaller, being used in mixed way with the fluorophor of other colors can be improved LED component
Brightness, improve the luminous efficiency of other color fluorescence bodies.
LED component production method of the invention replaces blue green light LED chip in the prior art using blue green light fluorophor,
Reduce the production of LED chip, it is easy to operate, greatly reduce the cost of manufacture of LED component；Also, the indigo plant that this method uses
Green emitting phosphor compensates for missing of the existing white light LEDs between 470nm-510nm, smaller to the shadow sound of its all band,
It is used together the brightness that LED component can be improved with blue light emitting diode, improves the luminous efficiency of other color fluorescence bodies.
Detailed description of the invention
Fig. 1 is the spectrogram of existing white light LEDs；
Fig. 2 is the blue green light light spectrogram in embodiment 1；
Fig. 3 is the blue green light light spectrogram in embodiment 2；
Fig. 4 is the blue green light light spectrogram in embodiment 3；
Fig. 5 is LED device structure schematic diagram.
In figure, 1, carrier；2, blue light emitting diode；3, blue green light illuminator；4, transparent sealing body；5, reflector.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Embodiment 1:
A kind of LED component, carrier, blue light emitting diode, blue green light illuminator, transparent sealing body, electric connecting wire；It carries
Body is ceramic base carrier, and blue green light illuminator is NaLi3SiO4:Eu2+, transparent sealing body is using organic silica gel, electric connecting wire
For copper wire；
Blue green light illuminator is scattered in transparent sealing body, and transparent sealing body is covered in above blue light emitting diode, blue
Green luminescence absorbs the light that the blue-light-emitting diode issues, and is converted into blue green light；Electric connecting wire connects blue light emitting
Diode and carrier.
Embodiment 2:
A kind of LED component, carrier, blue light emitting diode, blue green light illuminator, transparent sealing body, electric connecting wire；It carries
Body is ceramic base carrier, and blue green light illuminator is NaK (Li3SiO4)2:Eu2+, transparent sealing body is using epoxy glue, electric connecting wire
For silver wire；
Blue green light illuminator is scattered in transparent sealing body, and transparent sealing body is covered in above blue light emitting diode, blue
Green luminescence absorbs the light that the blue-light-emitting diode issues, and is converted into blue green light；Electric connecting wire connects blue light emitting
Diode and carrier.
Embodiment 3:
A kind of LED component, carrier, blue light emitting diode, blue green light illuminator, transparent sealing body, electric connecting wire；It carries
Body is ceramic base carrier, and blue green light illuminator is NaLi3SiO4:Eu2+With NaK (Li3SiO4)2:Eu2+Molar ratio is the combination of 1:1
Object, transparent sealing body use acrylic resin, and electric connecting wire is gold thread；
Blue green light illuminator is scattered in transparent sealing body, and transparent sealing body is covered in above blue light emitting diode, blue
Green luminescence absorbs the light that the blue-light-emitting diode issues, and is converted into blue green light；Electric connecting wire connects blue light emitting
Diode and carrier.
Embodiment 4:
A kind of production method of LED component, comprising the following steps:
S1: prepare carrier；
S2: blue light emitting diode is installed on carrier；
S3: mixing blue green light illuminator NaK (Li3SiO4)2:Eu2+With transparent sealing body, mixture is formed；
S4: said mixture point is applied to above the blue light emitting diode and in carrier；
S5: blue light emitting diode and carrier that point is coated with mixture in S3 are heating and curing.
Experimental example 1:
Luminescent spectrum test is carried out to the bluish-green fluorescence in embodiment 1-3 respectively, is tested using Fluorescence Spectrometer, setting swashs
Emitted luminescence intensity between light emitting source emission band 450nm, sweep test 460nm-550nm.Test result is as in Figure 2-4.
It is available from Fig. 2, the blue green light illuminator NaLi of embodiment 13SiO4:Eu2+The wave crest of emission spectrum be
472nm, full width at half maximum (FWHM) 32nm；It is available from Fig. 3, the blue green light illuminator NaK (Li of embodiment 23SiO4)2:Eu2+Hair
The wave crest for penetrating spectrum is 480nm, full width at half maximum (FWHM) 20nm；It is available from Fig. 4, the blue green light illuminator of embodiment 3
NaLi3SiO4:Eu2+With NaK (Li3SiO4)2:Eu2+The wave crest of emission spectrum of mixture be 475nm, full width at half maximum (FWHM) is
25nm。
The above test result shows that the luminescent spectrum of blue green light fluorophor of the invention can cover the wave of 470nm-510nm
Section.
Experimental example 2:
Existing bluish-green emitting phosphor, existing blue green light LED chip, the existing bluish-green powder of addition are tested respectively mixes other powder
The CRI value of the blue green light illuminator of the illuminator and embodiment 1-3 of (other powder be nitride rouge and powder or the yellowish green powder of YAG) and opposite
Brightness, test result is as follows shown in table 1:
Table 1CRI value and relative luminance table
| Illuminator | Relative cost | CRI | Relative luminance |
| Existing bluish-green emitting phosphor | 100% | 80 | 100% |
| Existing blue green light LED chip | 120% | 85 | 105% |
| The existing bluish-green powder of addition mixes other powder | 105% | 87 | 98% |
| Embodiment 1 | 90% | 90 | 110% |
| Embodiment 2 | 90% | 95 | 110% |
| Embodiment 3 | 90% | 93 | 110% |
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of blue green light illuminator, which is characterized in that expression general formula is MaSibN4-cO4d:Eu2+, wherein M is alkali metal, 8≤a
+ 4b≤40,0≤c≤4,0≤d≤5.
2. blue green light illuminator as described in claim 1, which is characterized in that one of M Li, Na and K or a variety of.
3. blue green light illuminator as claimed in claim 2, which is characterized in that the blue green light illuminator is NaK
(Li3SiO4)2:Eu2+And NaLi3SiO4:Eu2+One or two.
4. blue green light illuminator as described in any one of claims 1-3, which is characterized in that the transmitting of the blue green light illuminator
Wavelength is 470nm-510nm.
5. a kind of LED component comprising the described in any item blue green light illuminators of claim 1-4.
6. LED component as claimed in claim 5, which is characterized in that the LED component include carrier, blue light emitting diode,
Blue green light illuminator, transparent sealing body, electric connecting wire；The blue green light illuminator is scattered in the transparent sealing body, institute
Transparent sealing body is stated to be covered on the blue light emitting diode；The electric connecting wire connect the blue light emitting diode and
The carrier.
7. LED component as claimed in claim 6, which is characterized in that the carrier is in metallic-based support and ceramic base carrier
At least one.
8. LED component as claimed in claim 6, which is characterized in that the blue light emitting diode is comprising III-VI race's element
Semiconductor light-emitting-diode, the launch wavelength of the blue light emitting diode is 400nm-460nm.
9. LED component as claimed in claim 6, which is characterized in that the transparent sealing body is organic silica gel, epoxy glue and third
One of olefin(e) acid resin is a variety of.
10. a kind of production method of any one of claim 5-9 LED component, which comprises the following steps:
S1: prepare carrier；
S2: blue light emitting diode is installed on carrier；
S3: mixing blue green light illuminator and transparent sealing body form mixture；
S4: by said mixture point be applied on the blue light emitting diode and carrier in；
S5: blue light emitting diode and carrier that point is coated with mixture in S3 are heating and curing.
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Application publication date: 20190409 |