CN107142100A - A kind of graded index parcel quantum dot diaphragm and preparation method thereof - Google Patents
A kind of graded index parcel quantum dot diaphragm and preparation method thereof Download PDFInfo
- Publication number
- CN107142100A CN107142100A CN201710195406.3A CN201710195406A CN107142100A CN 107142100 A CN107142100 A CN 107142100A CN 201710195406 A CN201710195406 A CN 201710195406A CN 107142100 A CN107142100 A CN 107142100A
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- parcel
- refraction
- colloid
- index
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
Abstract
The invention discloses a kind of graded index parcel quantum dot diaphragm and preparation method thereof.In graded index parcel quantum dot diaphragm, quantum dot is wrapped in low-refraction colloid, forms parcel quantum dot particle；Parcel quantum dot particle height is scattered in high index of refraction colloid, forms graded index parcel quantum dot diaphragm.The present invention by quantum dot and with the high polymer of quantum dot high-compatibility, low-refraction by mixing parcel, solidification, further refinement obtains the quantum dot particle of low-refraction high polymer parcel, and the enwrapped granule of gained is scattered in high index of refraction colloid, it solidify to form graded index quantum-dot structure diaphragm.Cause the total reflection effect that light occurs when propagating present invention utilizes the refringence between different colloids, and then reduce the light for being incident to quantum dot, the degree of quantum dot saturated absorption is weakened, the life-span of quantum dot is effectively extended, had broad application prospects in multiple fields such as LED encapsulation.
Description
Technical field
Preparing technical field is encapsulated the present invention relates to LED luminescent material, more particularly to a kind of graded index parcel quantum
Point diaphragm and preparation method thereof.
Background technology
LED is most widely used as green of new generation, environmentally friendly light source, white light LEDs.White light LED part is mainly logical
Blue-ray LED is crossed to excite gold-tinted YAG fluorescent powder and send white light., it is necessary to by fluorescent material and encapsulating material during LED is encapsulated
Mixture is mixed to form, but is due to that fluorescent powder grain is larger, is easy to precipitate in encapsulation, causes fluorescent material in encapsulation
Skewness in material；Simultaneously as the refractive index difference of fluorescent material and encapsulating material is larger, being contacted at it can shape on surface
Into very strong light scattering effect.Problem above is urgent problem to be solved in LED development.
Quantum dot（Quantum Dots）As particle diameter in nano level luminescent material, because with wide absworption peak, narrow transmitting
Peak, the advantages of fluorescence efficiency is high and receive much concern, but due to quantum dot quantum dimensional effect, skin effect, small-size effect
Etc. Quantum Properties, high is required to the colloidal nature that optical package is applied, its further genralrlization application is limited.
Quantum dot film is extremely paid attention to as a kind of blooming piece in LED encapsulation fields, such as LCD backlight module,
LED lamp remote fluorescence diaphragm etc..The application of quantum dot film, can be obviously improved the color saturation of device, improve brightness, reduction
Power consumption etc..At present, quantum dot film has strong absorption saturated phenomenon, how to weaken saturated absorption, and then improve quantum dot
Life-span turns into the focus of research.The research of quantum dot film focuses mostly in terms of hydrophobic oxygen barrier, composite construction improve optical quality,
And weaken quantum dot to rare report in terms of light absorbs degree.
Quantum dot makes its absorption to light substantially stronger than body material due to own structural characteristics, shows as to the impermeable of light
Penetrate, do not reflect；Its size is in nanoscale, in the absence of strong scattering phenomenon of the conventional fluorescent powder to light.It is poor using Refractive Index of Material
Reach that the mode of optical design purpose is relatively conventional.Therefore, this invention address that designing and developing a kind of graded index parcel amount
Son point diaphragm and its manufacture method, weaken quantum dot saturated absorption to prepare, improve the quantum dot film in its life-span.
The content of the invention
In view of the present Research of prior art, the technical problems to be solved by the invention are to provide a kind of graded index bag
Quantum dot diaphragm is wrapped up in, by mixing parcel by quantum dot and with the high polymer of quantum dot high-compatibility, low-refraction, solidification,
Further refinement obtains the quantum dot particle of low-refraction high polymer parcel, and the enwrapped granule of gained is scattered in into high refraction
In rate colloid, graded index quantum-dot structure diaphragm is solidify to form.
Another object of the present invention, which is also resided in, provides the preparation method that a kind of graded index wraps up quantum dot diaphragm.
The present invention is achieved through the following technical solutions.
A kind of graded index wraps up quantum dot diaphragm, and quantum dot is wrapped in low-refraction colloid, forms parcel amount
Son point particle；Parcel quantum dot particle is scattered in high index of refraction colloid, forms graded index parcel quantum dot diaphragm.
Further, the quantum dot fluorescence powder that the quantum dot is applied for LED encapsulation fields, including CdSe quantum dot,
CdTe quantum, fluorescence C quantum dots or perovskite quantum dot.
Further, the light transmittance of the low-refraction colloid and high index of refraction colloid is more than 90%.
Further, the refractive index of the low-refraction colloid is 1.3 ~ 1.51, the refractive index of the high index of refraction colloid
For 1.54 ~ 1.78, and low-refraction colloid and high index of refraction colloid refractive index difference 0.1 ~ 0.4.
Further, the low-refraction colloid includes polymethyl methacrylate（PMMA）Or product designation HM-
6101 silica gel.
Further, the high index of refraction colloid includes product designation OE6650 silica gel or product designation
UV80582 Series silica gels.
Further, the particle diameter of the quantum dot is 2 ~ 10nm.
Further, the particle diameter of the parcel quantum dot particle is 0.5 μm ~ 500 μm.
Further, the mass fraction ratio of the quantum dot and low-refraction colloid is 5% ~ 20%.
Further, the mass fraction ratio of the parcel quantum dot particle and high index of refraction colloid is 1% ~ 10%.
The method that a kind of described graded index wraps up quantum dot diaphragm is prepared, is comprised the following steps：
（1）Quantum dot is mixed with low-refraction colloid, and solidified；
（2）By the quantum dot after solidification-low-refraction colloidal solids refinement, obtain wrapping up quantum dot particle；
（3）Obtained parcel quantum dot particle is scattered in high index of refraction colloid, solidified, the graded index parcel is obtained
Quantum dot diaphragm.
Further, step（2）In, the mode of the refinement is included in ball milling, laser cutting, micro-cutting or chemical attack
More than one.
Further, the mode of the solidification includes heat cure, ultra-violet curing or solvent volatilization solidification.
High degree of dispersion has the quantum dot that low-refraction colloid is wrapped up in high index of refraction colloid, due to existing between two kinds of colloids
Refringence, occurs full transmitting when the light for being incident to quantum dot is incident to low-refraction colloid from high index of refraction colloid and shows
As, and then the light for being incident to quantum dot is reduced, the degree of quantum dot saturated absorption is weakened, quantum dot is effectively extended
Life-span.
Compared with prior art, the present invention has the advantage that and effect：
（1）Quantum dot is wrapped in high-compatibility colloid by the present invention first, and then is prepared into parcel quantum dot particle, most at last
Parcel quantum dot particle be scattered in another colloid, due to shell wrap up in last layer colloid and reduce its reunion probability, and colloid with
The close dispersiveness that ensure that particle in another colloid of property between colloid, reduces high request mark of the quantum dot to colloid
Standard, have also been enlarged scattered application of the different colloids in quantum dot；
（2）Cause the total reflection effect that light occurs when propagating present invention utilizes the refringence between different colloids, and then
The light for being incident to quantum dot is reduced, the degree of quantum dot saturated absorption is weakened, effectively extends the life-span of quantum dot；
（3）Double colloids encapsulation that the present invention is used, due to the barrier of colloid to water oxygen in itself, the encapsulation of double-layer colloid is further carried
High quantum dot water oxygen obstructing capacity, is conducive to improving the stability of quantum dot and extends its life-span, in multiple necks such as LED encapsulation
Domain has broad application prospects.
Brief description of the drawings
Fig. 1 is the structural representation that graded index of the present invention wraps up quantum dot diaphragm；
Fig. 2 is the total reflection mechanism schematic diagram that graded index of the present invention wraps up quantum dot diaphragm；
Fig. 3 is the preparation flow figure that graded index of the present invention wraps up quantum dot diaphragm；
CdSe/ZnS quantum dots absorption spectrum and launching light spectrogram that Fig. 4 is used by embodiment；
Fig. 5 is the surface contact angle test result that graded index prepared by embodiment 1 wraps up quantum dot diaphragm.
Embodiment
The present invention is more specifically described in detail with reference to specific embodiment and accompanying drawing, but the invention is not restricted to
This.
As shown in figure 1, wrapping up the structural representation of quantum dot diaphragm, the quilt of quantum dot 2 for a kind of graded index of the invention
It is wrapped in low-refraction colloid 3, forms parcel quantum dot particle；Parcel quantum dot particle height is scattered in high index of refraction colloid
In 1, graded index parcel quantum dot diaphragm is formed.
It is the total reflection mechanism schematic diagram that graded index of the present invention wraps up quantum dot diaphragm shown in Fig. 2, as seen from the figure,
Light is from optically denser medium n2Incide optically thinner medium n1When, when incident angle is more than θ c, incident ray is totally reflected, so that
Reduce the light for being incident to quantum dot.
It is the preparation flow figure that graded index of the present invention wraps up quantum dot diaphragm shown in Fig. 3, preparation process includes quantum
The preparations of point-low-refraction colloidal solids, refinement quantum dot-low-refraction colloidal solid particles prepare parcel quantum dot particle,
Parcel quantum dot particle is redispersed in film forming in high index of refraction colloid.
Embodiment 1
Graded index parcel quantum dot diaphragm and preparation method thereof, comprises the following steps：
Low-refraction colloid select HM-6101 silica gel, Zhaoqing Hao Ming organosilicon materials Co., Ltd, refractive index is 1.41；Height folding
The OE6650 that rate colloid selects Dow Corning Corporation is penetrated, refractive index is 1.54；Quantum dot selects CdSe/ZnS quantum dots, and particle diameter is
6nm, CdSe/ZnS quantum dot absorption spectrum and launching light spectrogram are as shown in figure 4, launch wavelength is 550 ± 5nm.
（1）Appropriate 53mg CdSe/ZnS quantum dots powder and 0.5g HM6101 Type B silica gel liquid are measured with balance together
It is dissolved in 6ml acetone solns and forms mixture, mixture is stirred with 80 DEG C of constant temperature in magnetic stirrer, until in mixture
Acetone soln volatilize completely；
（2）Add after 0.5g HM6101 A type silica gel liquid, mixed with centrifugal blender into obtained quantum dot silica gel solution
Uniform and vacuum defoamation, injects film forming thickness in 0.5mm mould, the oven for baking for being placed in 100 DEG C is cured as 2 hours,
The demoulding, obtains quantum dot-low-refraction colloidal solids, and quantum dot mass fraction is 5%；
（3）Quantum dot-low-refraction colloidal solids the common grinding obtained will be solidified into 1mm particles, then using planetary ball mill
Refinement grinding is carried out, is fully ground to the diameter of particle and reaches 25um-35um, obtains wrapping up quantum dot particle；To ensure quantum
Point can successfully wrap up one layer of colloid, and the particle diameter that ball milling is obtained can not be less than 0.5um；To ensure sufficient incident ray,
The particle diameter of grain can not be too big, less than 500um, in case increase light path is lost；
（4）0.9g DOW CORNING OE6650 Type B silica gel liquid and 0.3g DOW CORNING OE6650 A type silicone fluids are measured with day numeral is flat
After body, vacuum defoamation is carried out after being well mixed with centrifugal blender, then weigh appropriate 60mg steps（3）The 25um parcel amounts of acquisition
Son point particle, adds to well mixed OE6650 silica gel, obtains the matter of parcel quantum dot particle and high index of refraction colloid
It is 4.7% to measure score ratio；Again with the well mixed simultaneously vacuum defoamation of centrifugal blender, inject in the mould that film forming thickness is 0.5mm,
The oven for baking for being placed in 150 DEG C is cured as 2 hours, the demoulding, obtains the graded index parcel quantum dot diaphragm.
The quantum dot film with graded index prepared by above step, when light is from light source outgoing to quantum dot mistake
Cheng Zhong, light from OE6650 colloids be incident to HM6101 colloids when, because two kinds of colloids have a refringence, light is situated between from light is close
Matter enters optically thinner medium, it may occur that total reflection phenomenon, and then reduces the light for being incident to quantum dot, weakens quantum dot saturation
The degree of absorption, effectively extends the life-span of quantum dot.Simultaneously as the presence of refringence, scattering of the particle to light
Ability strengthens, and is conducive to improving light extraction quality.
Surface contact angle test, test result are carried out to the graded index of preparation parcel quantum dot diaphragm as shown in figure 5,
Its contact angle is 108 °, reaches hydrophobic conditions, is conducive to completely cutting off water oxygen, improves the stability of quantum dot film.
Embodiment 2
Graded index parcel quantum dot diaphragm and preparation method thereof, comprises the following steps：
Low-refraction colloid selects polymetylmethacrylate, Aladdin reagent Co., Ltd, and refractive index is 1.48；Height folding
Rate colloid is penetrated from UV80582 series, Changxing（Guangzhou）Fine coating Co., Ltd, refractive index is 1.582；Quantum dot is selected
CdSe/ZnS quantum dots, particle diameter is 10nm, and CdSe/ZnS quantum dots absorption spectrum and launching light spectrogram are as shown in figure 4, transmitted wave
A length of 550 ± 5nm.
Preparation process is same as Example 1, unlike, step（1）Using solvent volatilization curing mode, using Static Spinning
Silk technique, rather than heat cure；Step（2）Cut using grinding or Laser Processing or machining mode；Step（3）Solidification
Mode is ultra-violet curing, rather than heat cure；
Specific preparation method is as follows：
（1）The nanofiber that PMMA wraps up CdSe/ZnS quantum dots is prepared by the way of electrostatic spinning, as electro-spinning process is molten
The volatilization of agent, PMMA-CdSe/ZnS nanofibers are solidified, and this process operation is simple and easy to apply, the energy are saved, while can obtain
Nanofiber, is conducive to carrying out next step processing；
Spinning solution is made up of CdSe/ZnS quantum dots, PMMA and solvent chloroform, is first scattered in 40mg CdSe/ZnS quantum dots
In 3ml chloroforms, 0.6g spinning POLYMER PMMAs are added, are stirred, stood, carry out far field electrostatic spinning；
Electrostatic spinning process is：Spinning voltage is 13kV, is collected using drum-type, and it is 12cm to receive distance, and injecting speed is
0.5ml/h；PMMA-CdSe/ZnS nanofibers are collected, average fibre diameter is distributed in 1um, fiber is placed in 80 DEG C of environment
12h is dried, unnecessary solvent is vapored away, dry fiber is obtained, obtained in fiber, the mass fraction of quantum dot is 6.25%.
（2）By step（1）The nanofiber refinement of acquisition, using machining mode cutting fibre to 50 μm；For guaranteed discharge
Son point can successfully wrap up one layer of colloid, and the particle diameter that ball milling is obtained can not be less than 0.5 μm；To ensure sufficient incident ray,
The particle diameter of particle can not be too big, less than 500 μm, in order to avoid increase light path loss.
（3）50mg steps are weighed with digital calculation balance（2）The long 50um obtained fiber cylindrical particle, adds to 1g UV
Inside 80582 resins, the mass fraction ratio for obtaining parcel quantum dot particle and high index of refraction colloid is 4.76%；And then with centrifugation
The well mixed simultaneously vacuum defoamation of mixer；Using spin coating mode film forming, rotating speed is 680rpm, and spin-coating time is 1min, Jin Erjin
Row ultra-violet curing film forming, obtains the graded index parcel quantum dot diaphragm.
The quantum dot film with graded index prepared by above step, when light is from light source outgoing to quantum dot mistake
Cheng Zhong, light from UV resins be incident to PMMA colloids when, because two kinds of colloids have a refringence, light enters from optically denser medium
Optically thinner medium, it may occur that total reflection phenomenon, and then the light for being incident to quantum dot 2 is reduced, weaken quantum dot saturated absorption
Degree, effectively extend the life-span of quantum dot.Simultaneously as the presence of refringence, scattering power of the particle to light
Enhancing, is conducive to improving light extraction quality.
Simultaneously as PMMA sheets are as hydrophobic material, the parcel of the additional resins of UV 80582, double colloid encapsulation make quantum dot
The water oxygen isolation capacity of film is further improved.
Embodiment 3
Graded index parcel quantum dot diaphragm and preparation method thereof, comprises the following steps：
Low-refraction colloid select HM-6101 silica gel, Zhaoqing Hao Ming organosilicon materials Co., Ltd, refractive index is 1.41；Height folding
The OE6650 that rate colloid selects Dow Corning Corporation is penetrated, refractive index is 1.54；Quantum dot selects CdSe/ZnS quantum dots, and particle diameter is
6nm, CdSe/ZnS quantum dot absorption spectrum and launching light spectrogram are as shown in figure 4, launch wavelength is 550 ± 5nm.
（1）Appropriate 250mg CdSe/ZnS quantum dots powder and 0.5g HM6101 Type B silica gel liquid one are measured with balance
Mixture is formed with being dissolved in 6ml acetone solns, mixture is stirred with 80 DEG C of constant temperature in magnetic stirrer, until mixture
In acetone soln volatilize completely；
（2）Add after 0.5g HM6101 A type silica gel liquid, mixed with centrifugal blender into obtained quantum dot silica gel solution
Uniform and vacuum defoamation, injects film forming thickness in 0.5mm mould, the oven for baking for being placed in 100 DEG C is cured as 2 hours,
The demoulding, obtains quantum dot-low-refraction colloidal solids, and quantum dot mass fraction is 20%；
（3）Quantum dot-low-refraction colloidal solids the common grinding obtained will be solidified into 1mm particles, then using planetary ball mill
Refinement grinding is carried out, is fully ground to the diameter of particle and reaches 25 μm -35 μm, obtains wrapping up quantum dot particle；To ensure quantum
Point can successfully wrap up one layer of colloid, and the particle diameter that ball milling is obtained can not be less than 0.5 μm；To ensure sufficient incident ray,
The particle diameter of grain can not be too big, less than 500 μm, in order to avoid increase light path loss；
（4）0.9g DOW CORNING OE6650 Type B silica gel liquid and 0.3g DOW CORNING OE6650 A type silicone fluids are measured with day numeral is flat
After body, vacuum defoamation is carried out after being well mixed with centrifugal blender, then weigh appropriate 133.3mg steps（3）The 25um bags of acquisition
Quantum dot particle is wrapped up in, is added to well mixed OE6650 silica gel, parcel quantum dot particle and high index of refraction colloid is obtained
Mass fraction ratio be 20%；Again with the well mixed simultaneously vacuum defoamation of centrifugal blender, the mould that injection film forming thickness is 0.5mm
In, the oven for baking for being placed in 150 DEG C is cured as 2 hours, the demoulding, obtains the graded index parcel quantum dot diaphragm.
The quantum dot film with graded index prepared by above step, when light is from light source outgoing to quantum dot mistake
Cheng Zhong, light from OE6650 colloids be incident to HM6101 colloids when, because there is refringence in two kinds of colloids, light from light it is close enter
Enter optically thinner medium, it may occur that total reflection phenomenon, and then reduce the light for being incident to quantum dot, weaken quantum dot saturated absorption
Degree, effectively extend the life-span of quantum dot.Simultaneously as the presence of refringence, scattering power of the particle to light
Enhancing, is conducive to improving light extraction quality.
Because the double-contracting of OE6650 colloids and HM6101 colloids is wrapped up in, double colloid encapsulation make the water oxygen isolation capacity of quantum dot film
Further improve.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any Spirit Essences without departing from the present invention
It is equivalent substitute mode with the change made under principle, modification, replacement, combination, simplification, is included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of graded index wraps up quantum dot diaphragm, it is characterised in that quantum dot is wrapped in low-refraction colloid, shape
Into parcel quantum dot particle；Parcel quantum dot particle is scattered in high index of refraction colloid, forms graded index parcel quantum dot
Diaphragm.
2. a kind of graded index parcel quantum dot diaphragm according to claim 1, it is characterised in that the quantum dot is
The quantum dot fluorescence powder of LED encapsulation fields application, including CdSe quantum dot, CdTe quantum, fluorescence C quantum dots or perovskite amount
Sub- point.
3. a kind of graded index parcel quantum dot diaphragm according to claim 1, it is characterised in that the low-refraction
The light transmittance of colloid and high index of refraction colloid is more than 90%.
4. a kind of graded index parcel quantum dot diaphragm according to claim 1, it is characterised in that the low-refraction
The refractive index of colloid is 1.3 ~ 1.51, and the refractive index of the high index of refraction colloid is 1.54 ~ 1.78, and low-refraction colloid and height
The refractive index difference of index colloidal is 0.1 ~ 0.4.
5. a kind of graded index parcel quantum dot diaphragm according to claim 1, it is characterised in that the low-refraction
Colloid includes polymethyl methacrylate or product designation HM-6101 silica gel；The high index of refraction colloid includes commodity board
Number be OE6650 silica gel or product designation UV80582 Series silica gels.
6. a kind of graded index parcel quantum dot diaphragm according to claim 1, it is characterised in that the quantum dot
Particle diameter is 2 ~ 10nm；The particle diameter of the parcel quantum dot particle is 0.5 μm ~ 500 μm.
7. a kind of graded index parcel quantum dot diaphragm according to claim 1, it is characterised in that the quantum dot with
The mass fraction ratio of low-refraction colloid is 5% ~ 20%；The mass fraction ratio of the parcel quantum dot particle and high index of refraction colloid
For 1% ~ 10%.
8. preparing the method that a kind of graded index described in any one of claim 1 ~ 7 wraps up quantum dot diaphragm, its feature exists
In comprising the following steps：
（1）Quantum dot is mixed with low-refraction colloid, and solidified；
（2）By the quantum dot after solidification-low-refraction colloidal solids refinement, obtain wrapping up quantum dot particle；
（3）Obtained parcel quantum dot particle is scattered in high index of refraction colloid, solidified, the graded index parcel is obtained
Quantum dot diaphragm.
9. a kind of graded index according to claim 8 wraps up the preparation method of quantum dot diaphragm, it is characterised in that step
Suddenly（2）In, the mode of the refinement includes one or more of ball milling, laser cutting, micro-cutting or chemical attack.
10. a kind of graded index according to claim 8 wraps up the preparation method of quantum dot diaphragm, it is characterised in that
The mode of the solidification includes heat cure, ultra-violet curing or solvent volatilization solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195406.3A CN107142100A (en) | 2017-03-29 | 2017-03-29 | A kind of graded index parcel quantum dot diaphragm and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195406.3A CN107142100A (en) | 2017-03-29 | 2017-03-29 | A kind of graded index parcel quantum dot diaphragm and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107142100A true CN107142100A (en) | 2017-09-08 |
Family
ID=59783507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195406.3A Pending CN107142100A (en) | 2017-03-29 | 2017-03-29 | A kind of graded index parcel quantum dot diaphragm and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107142100A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054631A (en) * | 2017-12-11 | 2018-05-18 | 深圳大学 | Saturable absorber device based on perovskite material and preparation method thereof |
| CN108511582A (en) * | 2018-05-07 | 2018-09-07 | 华南理工大学 | A kind of LED coatings of multilayer encapsulation quantum dot and preparation method thereof |
| WO2019177537A1 (en) * | 2018-03-13 | 2019-09-19 | National University Of Singapore | Perovskite polymer composite |
| WO2022143737A1 (en) * | 2020-12-30 | 2022-07-07 | Tcl科技集团股份有限公司 | Quantum dot light-emitting diode and preparation method therefor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558462A (en) * | 2010-11-04 | 2012-07-11 | 财团法人工业技术研究院 | Gradient Composite Material and Method of Manufacturing the Same |
| CN102816563A (en) * | 2012-08-29 | 2012-12-12 | 上海交通大学 | Preparation method and application of adjustable-refractivity silicon dioxide coated quantum dot nano composite luminescent material |
| CN103228983A (en) * | 2010-11-10 | 2013-07-31 | 纳米系统公司 | Quantum dot films, lighting devices, and lighting methods |
| CN105051152A (en) * | 2013-03-14 | 2015-11-11 | 纳米技术有限公司 | Multi-layer-coated quantum dot beads |
| KR20150141914A (en) * | 2015-11-20 | 2015-12-21 | 전남대학교산학협력단 | Quantum dot embedded silica and luminescent film comprising the silica |
| CN105315621A (en) * | 2014-07-10 | 2016-02-10 | Tcl集团股份有限公司 | Quantum dot/epoxy resin particle, preparation method thereof, quantum dot optical film and backlight module |
| CN106523961A (en) * | 2016-12-28 | 2017-03-22 | 合复新材料科技(无锡)有限公司 | Mining plastic lamp with GPS positioning and warning functions |
-
2017
- 2017-03-29 CN CN201710195406.3A patent/CN107142100A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558462A (en) * | 2010-11-04 | 2012-07-11 | 财团法人工业技术研究院 | Gradient Composite Material and Method of Manufacturing the Same |
| CN103228983A (en) * | 2010-11-10 | 2013-07-31 | 纳米系统公司 | Quantum dot films, lighting devices, and lighting methods |
| CN102816563A (en) * | 2012-08-29 | 2012-12-12 | 上海交通大学 | Preparation method and application of adjustable-refractivity silicon dioxide coated quantum dot nano composite luminescent material |
| CN105051152A (en) * | 2013-03-14 | 2015-11-11 | 纳米技术有限公司 | Multi-layer-coated quantum dot beads |
| CN105315621A (en) * | 2014-07-10 | 2016-02-10 | Tcl集团股份有限公司 | Quantum dot/epoxy resin particle, preparation method thereof, quantum dot optical film and backlight module |
| KR20150141914A (en) * | 2015-11-20 | 2015-12-21 | 전남대학교산학협력단 | Quantum dot embedded silica and luminescent film comprising the silica |
| CN106523961A (en) * | 2016-12-28 | 2017-03-22 | 合复新材料科技(无锡)有限公司 | Mining plastic lamp with GPS positioning and warning functions |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054631A (en) * | 2017-12-11 | 2018-05-18 | 深圳大学 | Saturable absorber device based on perovskite material and preparation method thereof |
| WO2019177537A1 (en) * | 2018-03-13 | 2019-09-19 | National University Of Singapore | Perovskite polymer composite |
| US11512213B2 (en) | 2018-03-13 | 2022-11-29 | National University Of Singapore | Perovskite polymer composite |
| CN108511582A (en) * | 2018-05-07 | 2018-09-07 | 华南理工大学 | A kind of LED coatings of multilayer encapsulation quantum dot and preparation method thereof |
| WO2022143737A1 (en) * | 2020-12-30 | 2022-07-07 | Tcl科技集团股份有限公司 | Quantum dot light-emitting diode and preparation method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107142100A (en) | A kind of graded index parcel quantum dot diaphragm and preparation method thereof | |
| US7999455B2 (en) | Luminescent device including nanofibers and light stimulable particles disposed on a surface of or at least partially within the nanofibers | |
| KR101971611B1 (en) | Molded nanoparticle phosphor for light emitting applications | |
| AU2021201829A1 (en) | Light emitting device | |
| CN107075358A (en) | The material of encapsulation in porous granule | |
| CN108511582A (en) | A kind of LED coatings of multilayer encapsulation quantum dot and preparation method thereof | |
| CN106547040A (en) | A kind of high intensity crystal film with photon and preparation method thereof | |
| Li et al. | Transparent and light-emitting epoxy super-nanocomposites containing ZnO-QDs/SiO2 nanocomposite particles as encapsulating materials for solid-state lighting | |
| KR20170071433A (en) | Light emitting structure and light emitting device using the same | |
| CN111808603A (en) | Quantum dot film, preparation method thereof and display device | |
| CN207031339U (en) | A kind of graded index wraps up quantum dot diaphragm | |
| Liang et al. | High‐transmittance and high‐haze composite particle‐free optical diffusers enabled by polymerization‐induced phase separation | |
| Liang et al. | Polystyrene-fiber-rod hybrid composite structure for optical enhancement in quantum-dot-converted light-emitting diodes | |
| CN208862021U (en) | A kind of LED coating of multilayer encapsulation quantum dot | |
| CN108802861B (en) | One kind is based on photonic crystal " sandwich " structure " spectroscope " and preparation method thereof | |
| CN105957945B (en) | A kind of light emitting diode and preparation method thereof with photonic crystal | |
| Yu et al. | Luminous efficacy enhancement for LED lamps using highly reflective quantum dot-based photoluminescent films | |
| CN110016334A (en) | The enhanced quantum dot fluorescence powder of forward scattering for pc-LEDs encapsulation | |
| Xu et al. | Dual‐Modal Invisible Photonic Crystal Prints from Photo/Water Responsive Photonic Crystals | |
| CN211455721U (en) | Ultraviolet LED device | |
| Zhuo et al. | Enhancement of efficiency and CCT uniformity for red phosphor thin films, red LEDs and laminated white LEDs based on near-ultraviolet LEDs using MgO nanoparticles | |
| EP2120256A2 (en) | Optical element, light-emitting device having the same and method of manufacturing the same | |
| Roppolo et al. | Optical properties of polymer nanocomposites | |
| Cheng et al. | Silica doped quantum dots film with enhanced light conversion efficiency for white light emitting diodes | |
| CN111430516A (en) | Quantum dot light-emitting device and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170908 |