CN108279450A - A kind of optical coupling material and its preparation method and application - Google Patents
A kind of optical coupling material and its preparation method and application Download PDFInfo
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- CN108279450A CN108279450A CN201810078967.XA CN201810078967A CN108279450A CN 108279450 A CN108279450 A CN 108279450A CN 201810078967 A CN201810078967 A CN 201810078967A CN 108279450 A CN108279450 A CN 108279450A
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Abstract
The present invention provides a kind of optical coupling materials, including substrate and the nanowire crossbars coupling layer in the substrate surface is set, the nanowire crossbars coupling layer includes core-shell quanta dots doped polymer nano wire and the metal nanometer line that is in contact with the core-shell quanta dots doped polymer nano wire.In the optical coupling material provided by the invention, the phasmon of metal nanometer line can effectively be excited by the luminescence generated by light signal from core-shell quanta dots doped polymer nano wire, and then improve the coupling performance of optical coupling material.The present invention also provides the preparation method of the optical coupling material, metal nanometer line and core-shell quanta dots doped polymer nano wire are assembled into chi structure by this method, realize optical coupling, not only economical but also efficient.
Description
Technical field
The present invention relates to optical coupling technology field more particularly to a kind of optical coupling material that can excite phasmon and its
Preparation method and application.
Background technology
Currently, metal nanometer line due to its surface phasmon optical waveguide light field can be limited in sub-wavelength dimensions but also
Low-loss conduction, is widely used as optical coupling material.But metal nanometer line optocoupler in the prior art
The microsize of condensation material makes light hardly enters in metal nanometer line to be coupled, and then causes its optical coupling performance bad,
There is limitation in practical applications.
In order to solve above-mentioned problem, prior art discloses many schemes, such as：It is compensated using the total internal reflection of prism
Momentum between photon and phasmon is poor；It focuses laser and to metal nanometer line end or focuses on metal nanometer line surface adhesion
There is progress local excition at nano particle；Phasmon is propagated in nanometer Amplifier Based On Stimulated Emission Of Radiation excitation positioned at metal nanometer line near field, this is
Because the sufficiently large momentum component in dipole near field can match the momentum for propagating phasmon.It follows that said program is
It is coupled by changing coupling process to solve the problems, such as that light is difficult to enter in metal nanometer line.It is not related in the prior art
In being improved to optical coupling material itself to realize report that light is coupled with metal nanometer line.
Invention content
The purpose of the present invention is to provide one kind can efficient coupling light enter metal nanometer line and generate and phasmon and carry
The optical coupling material and its preparation method and application of bloom coupling performance.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：
The present invention provides a kind of optical coupling material, including substrate and the nanowire crossbars coupling in the substrate surface is set
Layer is closed, the nanowire crossbars coupling layer includes the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer and mixed with the core-shell structure copolymer quantum dot
The metal nanometer line that heteropolymer nano wire is in contact.
Preferably, the metal nanometer line is nano silver wire, nanowires of gold, copper nano-wire or aluminium nano wire.
Preferably, the amount and polymer of the substance of the quantum dot-doped polymer nano rice noodles center-shell quantum dot of the core-shell structure copolymer
Mass ratio be (0.1~1.75) μm ol：(400~600) mg.
Preferably, the core-shell structure copolymer quantum dot is Cd@ZnS cores-shell quantum dot, CdSe@ZnS cores-shell quantum dot, Ag2S@
CdS core shell quantum dot, CdTe@CdS core shell quantum dots and CuInS2One or more of@ZnS core shell quantum dots.
Preferably, the polymer in the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer is polyvinylpyrrolidone, polycyclic
One kind or several in oxidative ethane, polyethylene glycol, polymethyl acrylate, polymethyl methacrylate, polyvinyl alcohol and makrolon
Kind.
Preferably, a diameter of 600~1200nm of the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer；
A diameter of 300~850nm of the metal nanometer line.
Preferably, the refractive index of the substrate is 1.37~1.42.
The present invention also provides the preparation methods of the optical coupling material, include the following steps：
Core-shell structure copolymer quantum dot solution is mixed with polymer solution, obtains mixed liquor；
The tip of glass optical fiber cone is immersed in the mixed liquor, the glass optical fiber cone is lifted, obtains core-shell structure copolymer quantum dot
Doped polymer nano wire；
The quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer are placed on substrate surface, are mixed being placed with core-shell structure copolymer quantum dot
The substrate surface of heteropolymer nano wire coats metal nanometer line suspension, by the quantum dot-doped polymer nanocomposite of the core-shell structure copolymer
Line is in contact with metal nanometer line, obtains optical coupling material.
Preferably, a concentration of 555~1250g/L of the polymer solution；The core-shell structure copolymer quantum dot solution it is a concentration of
4~5 μm of ol/L.
The present invention also provides application of the optical coupling material in micro/nano-scale light network.
The present invention provides a kind of optical coupling material, including substrate and the nanowire crossbars coupling in the substrate surface is set
Layer is closed, the nanowire crossbars coupling layer includes the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer and mixed with the core-shell structure copolymer quantum dot
The metal nanometer line that heteropolymer nano wire is in contact.In the optical coupling material provided by the invention, by metal nanometer line with
The quantum dot-doped polymer nano rice noodles of core-shell structure copolymer are in contact, and the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer can be under illumination excitation
It realizes luminescence generated by light, can not only be used as photo-emission source but also nano optical wave guide can be used as, luminescence generated by light signal is assigned to simultaneously
On more metal nanometer lines being in contact with the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer；The phasmon of metal nanometer line can
Effectively to be excited by the luminescence generated by light signal from the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer, and then improve optical coupling material
The coupling performance of material.
The present invention also provides the preparation method of the optical coupling material, this method is by metal nanometer line and core-shell structure copolymer quantum
Point doped polymer nano wire is assembled into chi structure, realizes optical coupling, not only economical but also efficient.
Description of the drawings
Fig. 1 is the TEM figures for the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer that embodiment 1 is prepared；
Fig. 2 is the SEM figures of nano silver wire in embodiment 1；
Fig. 3 is the SEM figures being arranged in embodiment 1 in the nanowire crossbars coupling layer of substrate surface；
Fig. 4 is the phasmon for the optical coupling material that embodiment 1 is prepared by the microscope photograph of optical excitation.
Specific implementation mode
The present invention provides a kind of optical coupling material, including substrate and the nanowire crossbars coupling in the substrate surface is set
Layer is closed, the nanowire crossbars coupling layer includes the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer and mixed with the core-shell structure copolymer quantum dot
The metal nanometer line that heteropolymer nano wire is in contact.
In the present invention, if specified otherwise, commercial product that all raw materials are well known to the skilled person.
Optical coupling material of the present invention includes substrate；In the present invention, the refractive index of the substrate be preferably 1.37~
1.42, more preferably 1.38~1.41, most preferably 1.39~1.40.It can be selected specifically to difluoro in embodiments of the present invention
Change magnesium substrate or silicon dioxide substrates.
Optical coupling material of the present invention further includes the nanowire crossbars coupling layer being arranged in the substrate surface, in this hair
Nanowire crossbars coupling layer described in bright include the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer and are mixed with the core-shell structure copolymer quantum dot
The metal nanometer line that heteropolymer nano wire is in contact.
In the present invention, the metal nanometer line is preferably nano silver wire, nanowires of gold, copper nano-wire or aluminium nano wire.
Metal nanometer line can be selected specifically to nano silver wire or copper nano-wire in embodiments of the present invention.In the present invention, the gold
The diameter for belonging to nano wire is preferably 300~850nm, more preferably 400~700nm, most preferably 500~600nm.In the present invention
In, the length of the metal nanometer line is preferably 2~30 μm, more preferably 5~25 μm, most preferably 10~20 μm.In this hair
In bright, the metal nanometer line is prepared preferably by chemical synthesis well-known to those skilled in the art.
In the present invention, the quantum dot-doped polymer nano rice noodles center-shell quantum dot of the core-shell structure copolymer is preferably Cd ZnS
Core-shell structure copolymer quantum dot, CdSe@ZnS cores-shell quantum dot, Ag2S@CdS cores-shell quantum dot, CdTe@CdS cores-shell quantum dot and
CuInS2One or more of@ZnS core shell quantum dots.In the present invention, when the core-shell structure copolymer quantum dot is above-mentioned specific choice
In it is two or more when, there is no special restriction to the ratio of each substance, can be by being arbitrarily doped；In embodiments of the present invention
Core-shell structure copolymer quantum dot can be selected specifically to Cd@ZnS cores-shell quantum dot, CdTe@CdS cores-shell quantum dot or CdSe@ZnS cores-shell
Quantum dot.In the present invention, the core-shell structure copolymer quantum dot prepares core-shell structure copolymer quantum preferably by well-known to those skilled in the art
The method of point is prepared.
In the present invention, the diameter of the core-shell structure copolymer quantum dot is preferably 1~10nm, more preferably 3~8nm, most preferably
4~5nm.
In the present invention, polymer is preferably polyvinylpyrrolidine in the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer
One in ketone, polyethylene oxide, polyethylene glycol, polymethyl acrylate, polymethyl methacrylate, polyvinyl alcohol and makrolon
Kind is several.In the present invention, when the polymer be above-mentioned specific choice in it is two or more when, do not have to the ratio of each substance
There is special restriction, can be mixed in any proportion；Polymer can be selected specifically to polyethylene in embodiments of the present invention
Pyrrolidones, polyethylene glycol or polymethyl acrylate.
In the present invention, the diameter of the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer is preferably 600~1200nm, more
Preferably 700~1000nm, most preferably 800~900nm.In the present invention, the quantum dot-doped polymer nanocomposite of the core-shell structure copolymer
The length of line is preferably 1 μm~1000 μm, more preferably 10~800 μm, most preferably 100~500 μm.
In the present invention, the amount of the substance of the quantum dot-doped polymer nano rice noodles center-shell quantum dot of the core-shell structure copolymer with it is poly-
The mass ratio for closing object is preferably (0.1~1.75) μm ol：(400~600) mg, more preferably (0.5~1.5) μm ol：(450~
550) mg, most preferably (0.8~1.2) μm ol：(480~520) mg.
The present invention also provides the preparation methods of the optical coupling material, include the following steps：
Core-shell structure copolymer quantum dot solution is mixed with polymer solution, obtains mixed liquor；
The tip of glass optical fiber cone is immersed in the mixed liquor, the glass optical fiber cone is lifted, obtains core-shell structure copolymer quantum dot
Doped polymer nano wire；
The quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer are placed on substrate surface, are mixed being placed with core-shell structure copolymer quantum dot
The substrate surface of miscellaneous polymer nano rice noodles coats metal nanometer line suspension, by the quantum dot-doped polymer of the core-shell structure copolymer
Nano wire is in contact with metal nanometer line, obtains optical coupling material.
The present invention mixes core-shell structure copolymer quantum dot solution with polymer solution, obtains mixed liquor.In the present invention, the core-
The concentration of shell quantum dot solution is preferably 4~5 μm of ol/L, more preferably 4.2~4.8 μm of ol/L, most preferably 4.3~4.6 μ
mol/L。
In the present invention, the solvent in the core-shell structure copolymer quantum dot solution is preferably water, more preferably deionized water.
In the present invention, the concentration of the polymer solution is preferably 555~1250g/L, more preferably 600~1000g/
L, most preferably 700~900g/L.
In the present invention, the volume ratio of the core-shell structure copolymer quantum dot solution and polymer solution is preferably 1:(1~3), it is more excellent
It is selected as 1：(1.2~2.8), most preferably 1：(1.5~2.5).
In the present invention, the solvent in the polymer solution is preferably in deionized water, glycerine and absolute ethyl alcohol
It is one or more of.Organic solvent can be selected specifically to absolute ethyl alcohol in embodiments of the present invention.
In the present invention, the mixing temperature of the core-shell structure copolymer quantum dot solution and polymer solution is preferably 20~50 DEG C；
In the embodiment of the present invention, the mixing specifically carries out at ambient temperature, i.e., additional need not be heated or cooled.At this
In invention, the time of the mixing is preferably 2.5~5 hours, more preferably 3~4 hours.
The present invention preferably keeps the core-shell structure copolymer quantum dot solution mixed with polymer solution by the stirring and ultrasound that carry out successively
It closes；In the present invention, the time of the stirring is preferably 2~3 hours.The present invention does not have the rate of the stirring special limit
It is fixed, each component in mixed solution can be made to be sufficiently mixed.In the present invention, the time of the ultrasound be preferably 30~
120 minutes, more preferably 50~80 minutes, most preferably 60~70 minutes.The present invention is not special to the frequency of the ultrasound
Restriction, each component in mixed solution can be made to be sufficiently mixed using well known in the art.
After obtaining mixed liquor, the tip that the present invention bores glass optical fiber is immersed in the mixed liquor, and the glass light is lifted
Fibre cone, obtains the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer.In the present invention, the diameter at glass optical fiber cone end is preferred
It is 20~80 μm, more preferably 30~60 μm, most preferably 40~50 μm.In the present invention, the tip of the glass optical fiber cone
The time immersed in mixed liquor is preferably 1~5 second, most preferably 2~4 seconds.
In the present invention, the pull rate of the lifting glass optical fiber cone is preferably 0.1~1.5 meter per second, more preferably
0.3~1.2 meter per second, most preferably 0.5~1.0 meter per second.
In the present invention, the lifting process is between glass optical fiber cone end and mixed liquor, with ethanol solution
Rapid evaporation, drawing form the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer
After obtaining the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer, the present invention is by the quantum dot-doped polymer nano of the core-shell structure copolymer
Rice noodles are placed on substrate surface, and metal nanometer line is coated on the substrate for being placed with the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer
The quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer are in contact with metal nanometer line, obtain optical coupling material by suspension.
The quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer are placed on the process of substrate surface preferably in optics by the present invention
Under microscope, realized by the probe on fine adjustment frame.In the present invention, under the light microscope, by fine adjustment frame
Probe the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer are placed on substrate surface the preferred manual adjustment holder of process on
Six axis three-dimensional knobs or using stepper motor control probe.
In the present invention, the concentration of the metal nanometer line suspension is preferably 0.2~1.5mg/mL, and more preferably 0.4
~1.2mg/mL, most preferably 0.6~1mg/mL.
In the present invention, the metal nanometer line suspension is coated in polymer nano rice noodles preferably by way of spin coating
On.In the present invention, the rotary speed of the spin coating is preferably 800~1200 revs/min, more preferably 900~1100 revs/min
Clock, most preferably 950~1050 revs/min.In the present invention, the time of the spin coating is preferably 20~50s, and more preferably 25
~40s, most preferably 30~35s.
In the present invention, the spin coating process is carried out preferably by spin coating instrument.
In the present invention, the mistake quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer being in contact with metal nanometer line
Cheng Youxuan under an optical microscope, is carried out using the micro- control device of six axis configured with tungsten tip.In the present invention, the tungsten tip
Diameter be preferably 250~350nm, more preferably 280~330nm, most preferably 300~320nm.
The position that the present invention is in contact to the polymer nano rice noodles that the core-shell structure copolymer is quantum dot-doped with metal nanometer line
No particular/special requirement is set and be orientated, the two can be made to contact.
The present invention also provides application of the optical coupling material in micro/nano-scale light network.
Described optical coupling material provided by the invention and its preparation method and application is carried out with reference to embodiment detailed
Explanation, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
500mg PVP are dissolved in the absolute ethyl alcohol of 0.6mL and form polymer solution；
Cd@ZnS cores-shell quantum dot aqueous solution of a concentration of 4 μm of ol/L of 250 μ L is mixed with polymer solution, in room temperature
Lower stirring 2.5 hours, is then ultrasonically treated 30 minutes, obtains mixed liquor；
The tip of a diameter of 20 microns of glass optical fiber cone is immersed in the mixed liquor 5 seconds, with the speed of 0.5 meter per second
Glass optical fiber cone is lifted, between glass optical fiber cone end and mixed liquor, with the rapid evaporation of ethanol solution, draws and is formed
The quantum dot-doped polymer nano rice noodles of core-shell structure copolymer；
Under an optical microscope, by the probe on fine adjustment frame by the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer
It is placed on refractive index and is 1.39 bifluoride magnesium substrate surface, and be placed with the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer
On substrate, using spin coating instrument with 1000 revs/min, a concentration of 1mg/mL nano silver wires suspension 30s of spin coating；
It under an optical microscope, will be described using the micro- control device of six axis configured with the tungsten tip that tip diameter is 300nm
Nano silver wire is in contact with the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer, obtains optical coupling material.
Fig. 1 is that the TEM of the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer schemes, and Fig. 2 is that the SEM of nano silver wire schemes, and Fig. 3 is to set
Set the SEM figures in the nanowire crossbars coupling layer of substrate surface.As shown in Figure 1, core-shell structure copolymer quantum dot is entered poly- by intact doping
It closes inside object nano wire, and polymer nanocomposite linear diameter is 600~1200nm；As shown in Figure 2, the silver nanoparticle that the present embodiment uses
A diameter of 300~850nm of line, length are 2~30 μm；From the figure 3, it may be seen that single in nanowire crossbars coupling layer in the present embodiment
Contact has intersected on the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer root nano silver wire well, and nano silver wire and core-shell structure copolymer amount
The contact angle of son point doped polymer nano wire is 60 °.
The optical characteristics of optical coupling structure material is studied using microspectrophotometer：It is the green of 532nm using wavelength
Exciting light of the color laser as excitation optical coupling material；Luminescence generated by light signal passes through 40 times of microcobjective (numerical aperture 0.6)
Pass through dichronic mirror and wavelength after collection successively for the optical filter of 532nm；By the optical signal of optical filter again by beam splitter after quilt
It is individually directed spectrometer and CCD camera carries out spectrum and Image Acquisition.
The phasmon for the optical coupling material that Fig. 4 is prepared for embodiment is by the microscope photograph of optical excitation, by Fig. 4
It is found that there is the hot spot of scattering in nano silver wire end, i.e., phasmon, which is transferred out, comes.
Embodiment 2
600mg polyethylene glycol is dissolved in the absolute ethyl alcohol of 0.72mL and forms polymer solution；
CdTe@CdS cores-shell quantum dot aqueous solution of a concentration of 4 μm of ol/L of 350 μ L is mixed with polymer solution, in room
The lower stirring of temperature 3 hours, is then ultrasonically treated 35 minutes, obtains mixed liquor；
The tip of a diameter of 40 microns of glass optical fiber cone is immersed in the mixed liquor 1 second, with the speed of 1.5 meter per seconds
Glass optical fiber cone is lifted, between glass optical fiber cone end and mixed liquor, with the rapid evaporation of ethanol solution, draws and is formed
The quantum dot-doped polymer nano rice noodles of core-shell structure copolymer；
Under an optical microscope, by the probe on fine adjustment frame by the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer
It is placed on refractive index and is 1.39 bifluoride magnesium substrate surface, and be placed with the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer
On substrate, using spin coating instrument with 1000 revs/min, the nano silver wire suspension 30s of a concentration of 0.5mol/L of spin coating；
It under an optical microscope, will be described using the micro- control device of six axis configured with the tungsten tip that tip diameter is 300nm
Nano silver wire is in contact with the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer, obtains optical coupling material.
The nano silver wire of the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer, use that the present embodiment is prepared and setting
Structure determination is carried out in the nanowire crossbars coupling layer of substrate surface, test result and embodiment 1 are almost the same, show core-
Shell quantum dot is entered by intact doping inside polymer nanocomposite line, and polymer nanocomposite linear diameter is 600~1200nm；And this
A diameter of 300~the 850nm for the nano silver wire that embodiment uses, length are 2~30 μm；Silver nanoparticle in nanowire crossbars coupling layer
Line contacts on polymer nano rice noodles well.
The optical coupling material progress be prepared to the present embodiment and 1 identical optical performance test of embodiment,
Test result and embodiment 1 are almost the same.
Embodiment 3
400mg polymethyl acrylate is dissolved in the absolute ethyl alcohol of 0.48mL and forms polymer solution；
CdSe@ZnS cores-shell quantum dot aqueous solution of a concentration of 4.5 μm of ol/L of 300 μ L is mixed with polymer solution,
It stirs at room temperature 3 hours, is then ultrasonically treated 30 minutes, obtains mixed liquor；
The tip of a diameter of 80 microns of glass optical fiber cone is immersed in the mixed liquor 3 seconds, is carried with the speed of 1 meter per second
Optical taper of cutting a piece of glass, with the rapid evaporation of ethanol solution, draws between glass optical fiber cone end and mixed liquor and forms core-
The quantum dot-doped polymer nano rice noodles of shell；
Under an optical microscope, by the probe on fine adjustment frame by the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer
It is placed on refractive index and is 1.42 silicon dioxide liner bottom surface, and be placed with the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer
On substrate, using spin coating instrument with 1000 revs/min, the copper nano-wire suspension 30s of a concentration of 0.8mol/L of spin coating；
It under an optical microscope, will be described using the micro- control device of six axis configured with the tungsten tip that tip diameter is 300nm
Copper nano-wire is in contact with the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer, obtains optical coupling material.
The copper nano-wire of the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer, use that the present embodiment is prepared and setting
Structure determination is carried out in the nanowire crossbars coupling layer of substrate surface, test result and embodiment 1 are almost the same, show core-
Shell quantum dot is entered by intact doping inside polymer nanocomposite line；And a diameter of the 300 of the copper nano-wire of the present embodiment use
~850nm, length are 2~30 μm；Copper nano-wire contacts on polymer nano rice noodles well in nanowire crossbars coupling layer.
The optical coupling material progress be prepared to the present embodiment and 1 identical optical performance test of embodiment,
Test result and embodiment 1 are almost the same.
As seen from the above embodiment, a kind of optical coupling material provided by the invention, by metal nanometer line setting to core-shell structure copolymer amount
It on son point doped polymer nano wire and contacts, light may be implemented under illumination excitation in quantum dot-doped polymer nano rice noodles
Photoluminescence not only can be used as photo-emission source that can be used as nano optical wave guide again, by luminescence generated by light signal while be assigned to and core-shell structure copolymer
On the more metal nanometer lines that quantum dot-doped polymer nano rice noodles are in contact.The phasmon of metal nanometer line can by from
The luminescence generated by light signal of the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer effectively excites, and then improves the coupling of optical coupling material
Performance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of optical coupling material, including substrate and the nanowire crossbars coupling layer in the substrate surface, the nanometer are set
Line cross-couplings layer include the quantum dot-doped polymer nano rice noodles of core-shell structure copolymer and with the quantum dot-doped polymer nanocomposite of the core-shell structure copolymer
The metal nanometer line that line is in contact.
2. optical coupling material as described in claim 1, it is characterised in that：The metal nanometer line is nano silver wire, gold nano
Line, copper nano-wire or aluminium nano wire.
3. optical coupling material as described in claim 1, it is characterised in that：The quantum dot-doped polymer nano rice noodles of core-shell structure copolymer
The amount of the substance of middle core-shell structure copolymer quantum dot and the mass ratio of polymer are (0.1~1.75) μm ol：(400~600) mg.
4. the optical coupling material as described in claim 1 or 3, it is characterised in that：The core-shell structure copolymer quantum dot is Cd@ZnS cores-shell
Quantum dot, CdSe@ZnS cores-shell quantum dot, Ag2S@CdS core shells quantum dot, CdTe@CdS core shell quantum dots and CuInS2@ZnS cores
One or more of shell quantum dot.
5. the optical coupling material as described in claim 1 or 3, it is characterised in that：The quantum dot-doped polymer nanocomposite of core-shell structure copolymer
Polymer in line is polyvinylpyrrolidone, polyethylene oxide, polyethylene glycol, polymethyl acrylate, poly-methyl methacrylate
One or more of ester, polyvinyl alcohol and makrolon.
6. optical coupling material as described in claim 1, it is characterised in that：The quantum dot-doped polymer nano rice noodles of core-shell structure copolymer
A diameter of 600~1200nm；
A diameter of 300~850nm of the metal nanometer line.
7. optical coupling material as described in claim 1, it is characterised in that：The refractive index of the substrate is 1.37~1.42.
8. the preparation method of optical coupling material, includes the following steps described in claim 1~7 any one：
Core-shell structure copolymer quantum dot solution is mixed with polymer solution, obtains mixed liquor；
The tip of glass optical fiber cone is immersed in the mixed liquor, the glass optical fiber cone is lifted, it is quantum dot-doped to obtain core-shell structure copolymer
Polymer nano rice noodles；
The quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer are placed on substrate surface, it is quantum dot-doped poly- being placed with core-shell structure copolymer
Close object nano wire substrate surface coat metal nanometer line suspension, by the quantum dot-doped polymer nano rice noodles of the core-shell structure copolymer with
Metal nanometer line is in contact, and obtains optical coupling material.
9. preparation method as claimed in claim 8, it is characterised in that：A concentration of 555~1250g/ of the polymer solution
L；A concentration of 4~5 μm of ol/L of the core-shell structure copolymer quantum dot solution.
10. the preparation method system as described in claim 1~7 any one of them optical coupling material or any one of claim 8~9
Application of the standby obtained optical coupling material in micro/nano-scale light network.
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| CN109273985A (en) * | 2018-11-05 | 2019-01-25 | 暨南大学 | A kind of nanowire lasers and preparation method thereof |
| CN110079298A (en) * | 2019-04-26 | 2019-08-02 | 暨南大学 | A kind of quantum phasmon material and its preparation method and application |
| WO2023092315A1 (en) * | 2021-11-23 | 2023-06-01 | 广东赞禄科技有限公司 | Smart liquid-filled window using plasmon suspension liquid for color modulation, and smart liquid-filled window system |
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