CN106009210B - A kind of YAB/SiO2Micro-nano composite luminescent material synergy EVA film of near-infrared and its preparation method and application - Google Patents
A kind of YAB/SiO2Micro-nano composite luminescent material synergy EVA film of near-infrared and its preparation method and application Download PDFInfo
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Abstract
The present invention relates to a kind of YAB/SiO2Micro-nano composite luminescent material synergy EVA film of near-infrared and its preparation method and application, preparation method is the following steps are included: dehydrated alcohol and non-polar organic solvent are configured to mixed solvent by (1)；(2) YAB/SiO is added2The micro-nano composite luminescent material of near-infrared, is stirred and ultrasound is to 30~50 DEG C, and slurry is made；(3) using the method for surface swelling, commercially available EVA film is impregnated in the slurry, then YAB/SiO obtained by drying2The micro-nano composite luminescent material synergy EVA film of near-infrared, the film have photon conversion, scattering, refraction and the photons managerial ability such as anti-reflection, can be applied to the synergy of silicon solar cell.Compared with prior art, synergy EVA film performance uniformity consistency produced by the present invention, the advantages that the current density of light transmission rate and battery can be effectively improved applied to silicon solar cell, while the ageing properties of EVA film can be improved.
Description
Technical field
The invention belongs to luminescent material technology and photovoltaic technology field, in particular to a kind of YAB/SiO2Near-infrared is micro-nano
Composite luminescent material synergy EVA film and preparation method thereof and application of the technology in silicon solar cell synergy.
Background technique
(crystalline silicon is a kind of indirect gap semiconductor material to traditional silicon solar cell, and energy gap 1.12eV can only effectively inhale
Receive utilize 700~1100nm solar photon) energy loss mainly have 4 processes: 1, heat loss；2, phase boundary potential loses；
3, contact resistance loses；4, recombination losses.It is wherein the most key with heat loss.Higher than silicon band gap photon mostly with hot carrier
Form be transitted very quickly into thermal energy so that the efficiency of solar battery reduces.The theoretical conversion efficiency value of crystal silicon solar batteries
It is 31%.The tidemark of monocrystalline silicon battery transfer efficiency is 24.7% at present, and the efficiency of industrial crystal-silicon battery slice is then
Lower, the efficiency of industrialization polycrystalline silicon battery plate is about 15%.If the higher ultraviolet-visible of energy in solar spectrum added
To utilize, then the transfer efficiency of cell piece can be effectively increased.It has been reported that display, is turned by the light that near infrared light transition material carries out
The theoretical upper limit for changing solar battery can be increased to 38.6% from 30%.In recent years, grinding about near infrared light transition material
Study carefully the research hotspot as scholar.But the window of the convertible light of the near-infrared converting material of synthesis is relatively narrow.For example, traditional is close
Infraluminescence fluorescent powder YVO4: Yb although its infraluminescence intensity is high, excitation wavelength cover only sun light distribution compared with
Few ultraviolet region (250~350nm)；For another example Y3Al5O12: Ce, Yb, excitation wavelength range are 400~500nm, are only covered
The fraction of sunlight visible region.Limitation existing for these existing near infrared light transition materials causes it cannot be compared with
High utilizes sunlight, limits the promotion of solar battery efficiency.On the other hand, related light converts the application of EVA film also not
It appears in the newspapers, main cause is that above-mentioned infrared light conversion material is added in EVA film, it will under the light transmission rate for leading to EVA film
Drop, reduces the photoelectric conversion efficiency of battery instead.
Chinese patent CN105349146A discloses a kind of YAB/SiO2The micro-nano luminescent material of near-infrared and its preparation and
Using.The patent is by YAB/SiO2The micro-nano luminescent material of near-infrared is dispersed in EVA masterbatch, and light is made and converts EVA film.
But due to YAB/SiO2The micro-nano luminescent material of near-infrared is difficult to be dispersed in EVA masterbatch, and performance is difficult one after film
It causes, this is unfavorable for the raising of cell photoelectric transfer efficiency, while being also unfavorable for industrialized production.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of performance uniformities
Property can effectively improve the current density of light transmission rate and battery, while can improve the YAB/SiO of the ageing properties of EVA film2Closely
Infrared micro-nano composite luminescent material synergy EVA film and preparation method thereof, the synergy EVA film that this method is prepared can be used for silicon
Solar battery.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of YAB/SiO2The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared, comprising the following steps:
It (1) is that 1~10:1 is configured to mixed solvent according to volume ratio by dehydrated alcohol and non-polar organic solvent；
(2) by YAB/SiO2In the mixed solvent is added in the micro-nano composite luminescent material of near-infrared, stir and ultrasound to 30~
50 DEG C, slurry, the YAB/SiO is made2The mass volume ratio of the micro-nano composite luminescent material of near-infrared and mixed solvent is
0.01~1g:100mL；
(3) using the method for surface swelling, commercially available EVA film is impregnated in the slurry made from step (2), is then dried
Up to YAB/SiO2The micro-nano composite luminescent material synergy EVA film of near-infrared.
The preparation method further includes by YAB/SiO obtained2The micro-nano composite luminescent material synergy EVA film of near-infrared exists
90~130 DEG C of hot-forming steps.
Non-polar organic solvent described in step (1) includes chloroform, petroleum ether, toluene or ethylene glycol, preferably chloroform.
The volume ratio of the dehydrated alcohol and non-polar organic solvent is 3:1, the YAB/SiO2Near-infrared micro-nano
The mass volume ratio of rice composite luminescent material and mixed solvent is 0.012g:100mL.
YAB/SiO2The micro-nano composite luminescent material of near-infrared is inorganic material, and EVA is organic material, to make the surface EVA
Swelling, inorganic powder material scattered adsorption are needed using polar/non-polar mixed solvent, in the mixed solvent dehydrated alcohol content
Too high, swelling time is too long, and dehydrated alcohol content is too low, and swelling rate is not easily controlled, therefore preferably dehydrated alcohol and non-pole
Property organic solvent volume ratio be 3:1.
YAB/SiO2The mass volume ratio of the micro-nano composite luminescent material of near-infrared and mixed solvent is preferably 0.012 g:
100mL, the excessively high transmitance for influencing EVA of volume ratio, too low reduction turn light efficiency, result to cell photoelectric transfer efficiency not
Benefit.
The present invention carries out the dipping of EVA film at 30~50 DEG C, and within this temperature range, EVA film surface swelling rate is controllable
Property and inorganic powder material scattered adsorption better performances, are conducive to inorganic powder material in EVA film adsorption.If when dipping
Temperature is excessively high, then EVA is easily dissolved in solvent, causes the damage of film, and temperature is too low, then swelling time is too long.
Dip time described in step (3) is 5~100s, and drying temperature is 30~50 DEG C.
It is preferred that dip time is 35s.
Drying time in step (3) is 1~6h, preferably 3h.
YAB/SiO described in step (2)2The preparation method of the micro-nano composite luminescent material of near-infrared includes following step
It is rapid:
Clean YAB fluorescent emissive materials and aerosil are mixed according to mass ratio 100:1~20, are then existed
Wet ball grinding is carried out under the action of deionized water, dehydrated alcohol or ethanol solution, then after drying, crushing, YAB/SiO is made2
The micro-nano composite luminescent material of near-infrared.
By the way that YAB fluorescent emissive materials are cleaned simultaneously centrifugal treating with deionized water, until upper layer is colourless transparent liquid
It is clean to be processed to.
Preferably, wet ball grinding is carried out under the action of volume fraction is 95% ethanol solution.
The partial size of the YAB fluorescent emissive materials is 1~3 μm, the partial size of the aerosil is 10~
100nm；
The mass ratio of the YAB fluorescent emissive materials and aerosil is 100:8；
The time of the wet ball grinding be 1~for 24 hours；It is preferred that Ball-milling Time is 12h.
Drying temperature is 80~150 DEG C；It is preferred that drying temperature is 120 DEG C；
The aerosil is selected from one of commercially available TSA-270L or A380.
The chemical formula of the YAB fluorescent emissive materials is Y1-y-zMzAl3-x(BO3)4:Cr3+ x,Yb3+ y, wherein M is Bi3+
And La3+One or both of, 0 < x≤0.2,0 < y≤0.2,0≤z≤0.2；The fluorescent emissive materials preparation method include with
Lower step:
(a) by Y3+、Al3+、Bi3+、La3+、Yb3+Oxide and H3BO3With Cr salt according to chemical formula Y1-y-zMzAl3-x
(BO3)4:Cr3+ x,Yb3+ yIn the ratio of components of each element carry out being mixed to get mixture,
(b) dehydrated alcohol is added in the mixture that step (a) obtains and grinds drying, by the mixed-powder liter after drying
Temperature is sintered 3~8 hours to 1000 DEG C~1400 DEG C,
Or the mixture high-speed stirred for obtaining step (a) is uniform, then heats to 1000 DEG C~1400 DEG C sintering 3~8
Hour.
Sintering temperature in step (b) is 1150 DEG C, and sintering time is 5 hours.
The YAB/SiO that the preparation method is prepared2The micro-nano composite luminescent material synergy EVA film of near-infrared,
It is characterized in that, by EVA film and the YAB/SiO for being supported on EVA film surface2The micro-nano composite luminescent material composition of near-infrared, it is described
YAB/SiO2The partial size of the micro-nano composite luminescent material of near-infrared is 10~1000 nm.
The YAB/SiO2The micro-nano composite luminescent material synergy EVA film of near-infrared is in silicon solar cell synergy
Using.
The light transmission rate and Cell current density of EVA film can be improved in the synergy EVA film, improves cell photoelectric transfer efficiency
0.5~1.0 percentage point or so, the ageing properties of EVA film can also be improved, be a kind of effective cell synergistic technology.
The present invention using " a kind of near-infrared fluorescent emissive material of broadband ultraviolet-excited by visible light and preparation method thereof and
Using " method described in (patent No.: ZL 201310098279.7), a kind of YAB near-infrared light-emitting material is obtained, with YAl3
(BO3)4As matrix, Cr3+Replace the case of aluminium oxide, Yb3+Replace the case of yttrium oxide, Cr3+As visible light shine in
The heart, Yb3+As the centre of luminescence of near infrared light, Cr3+, Yb3+Between energy transfer occurs.During the preparation process, appropriate to be added
One or both of bismuth, lanthanum ion can enter the case of yttrium oxide, can increase Cr3+In the absorption of visible region, Jin Ermin
Change Yb3+Near infrared luminous intensity.
YAB fluorescent emissive materials and aerosil mixing, wet ball grinding obtain YAB/SiO2Near-infrared is micro-nano
Composite luminescent material, the material appearance are light green color；There is strong absorption in ultraviolet-visible light area；Excitation wavelength is 350~650nm
Between, emission spectrum is 950~1100nm；Its near infrared luminous intensity is high, and fluorescence property is stablized.Its emission spectrum is placed exactly in
The best window of crystal silicon battery.
By above-mentioned YAB/SiO2It is non-that the micro-nano composite luminescent material ultrasound of near-infrared is dispersed in a kind of dehydrated alcohol-
In polarized mixed solvent, a kind of milky stable slurry is obtained.Slurry good dispersion in EVA film, safe and non-toxic, chemistry
Stablize, is easy to long-term preservation.
The method that the present invention uses surface swelling, is impregnated in above-mentioned slurry with eva film for commercially available photovoltaic at a certain temperature
Certain time in material makes the YAB/SiO in slurry2It is uniformly firmly attached to eva film surface, obtains a kind of increasing after taking out drying
Eva film is imitated, which has photon conversion, scattering, refraction and the photons managerial ability such as anti-reflection, and performance uniformity.
This method simple process, it is environmentally protective, it is suitble to industrialized production.
Compared with prior art, the invention has the following advantages:
(1) the light activated YAB/SiO of ultra wide band ultraviolet-visible2The excitation wavelength of the micro-nano luminescent material of near-infrared
The broadband emission for being 900~1100nm in the transmitting main peak of 350nm~650nm infrared light district, the excitation wavelength of the fluorescent material
Than broad, can well using too can light, and fluorescence intensity level is relatively high, is a kind of ideal silicon solar cell synergy
Near-infrared transition material；
(2) the light activated YAB/SiO of ultra wide band ultraviolet-visible2The micro-nano luminescent material of near-infrared has by force in ultraviolet region
It absorbs, Nano-meter SiO_22Peptizaiton with light scattering process and in EVA, can improve light conversion EVA film uses the longevity
Life, improves the transmitance of EVA film, has synergistic effect to silicon solar cell；
(3) YAB fluorescent emissive materials of the invention use high temperature solid-state method, and synthetic material is safe and non-toxic, chemical property is steady
Fixed, fluorescence property is stablized, and long-term preservation is easy to；
(4) preparation process of the invention is simple easy, environmentally protective, is suitble to industrialized production.
Detailed description of the invention
Fig. 1 is the excitation of YAB fluorescent emissive materials and emission spectrum；
Fig. 2 is J-V curve of the synergy EVA film prepared in embodiment 12 in battery applications.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings, and purpose, which is only that, is best understood from this hair
The protection scope that bright content is not intended to limit the present invention.
Embodiment 1
A kind of YAB/SiO provided by the present embodiment2The preparation method of micro-nano near infrared emission material, specific steps are such as
Under:
1) following materials: the Y of 95.3822g are weighed2O3, the Al of 136.5448g2O3, the H of 249.2986g3BO3,
23.2848g Bi (NO3)3·5H2The Yb of O, 13.2410g2O3, the Cr of 15.3206g2O3。
2) above-mentioned raw materials are mixed evenly in high speed disperser；
3) above-mentioned uniformly mixed powder at 1200 DEG C, high temperature sintering 6 hours, is obtained into YAB fluorescent emission in high temperature furnace
Material excites as shown in Figure 1 with emission spectrum；
4) it takes above-mentioned YAB fluorescent emissive materials 200g in ball grinder, Nano-meter SiO_2 is added216g is added appropriate ball milling and uses
After agate bead and deionized water, ball milling 12 hours；
5) slurry after above-mentioned ball milling is placed in air dry oven or vacuum oven dries at 120 DEG C；
6) material after above-mentioned drying taken out, smashed to get required YAB/SiO at a high speed2The micro-nano luminous material of near-infrared
Material.
YAB/SiO obtained2The partial size of the micro-nano composite luminescent material of near-infrared is 10~1000nm
Embodiment 2
A kind of YAB/SiO provided by the present embodiment2The preparation method and embodiment 1 of micro-nano near infrared emission material
It is essentially identical, the difference is that:
Step 5) is changed to the 200g YAB fluorescent emissive materials and 16g SiO after above-mentioned ball milling2Aeroge is molten in ethyl alcohol
It is stirred in liquid 1 hour.
Embodiment 3
A kind of YAB/SiO provided by the present embodiment2The preparation method and embodiment 1 of micro-nano near infrared emission material
It is essentially identical, it is a difference in that:
By the SiO in step 5)2The additive amount of aeroge is changed to 12g.
Embodiment 4
A kind of YAB/SiO provided in this embodiment2The preparation side of the micro-nano composite luminescent material synergy EVA film of near-infrared
Method, the specific steps are as follows:
1) it accurately measures 40L dehydrated alcohol and 10L chloroform is configured without water-ethanol-chloroformic solution；
2) YAB/SiO prepared by 100g embodiment 1 is measured2Dehydrated alcohol-chlorine in step 1) is added near infrared emission material
Imitative solution, stirring, ultrasonic 30min；
3) when above-mentioned slurry temperature reaches 50 DEG C, EVA film is impregnated in above-mentioned slurry, is taken out after 60s；
4) EVA film taken out simply is dried up with hair dryer, is placed in 30 DEG C of baking ovens and is placed 4h, and YAB/SiO is made2Near-infrared
Micro-nano composite luminescent material synergy EVA film；
5) above-mentioned film is placed in hot pressing 5min in 120 DEG C of baking ovens, cooled to room temperature.
Embodiment 5
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
It is 30L that dehydrated alcohol in step 1), which is measured volume, and the measurement volume of chloroform is 10L.
Embodiment 6
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
It is 50L that dehydrated alcohol in step 1), which is measured volume, and the measurement volume of chloroform is 10L.
Embodiment 7
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
By YAB/SiO in step 2)2The additional amount of near infrared emission material is 200g.
Embodiment 8
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
By YAB/SiO in step 2)2The additional amount of near infrared emission material is 50g.
Embodiment 9
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
EVA film is impregnated again when slurry temperature in step 3) is reached 30 DEG C.
Embodiment 10
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
EVA film is impregnated again when slurry temperature in step 3) is reached 40 DEG C.
Embodiment 11
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
It is 20s by the dip time of EVA film in step 3).
Embodiment 12
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
It is 40s by the dip time of EVA film in step 3).
Blank (untreated) EVA film, EVA film are only adulterated into (dipping) SiO respectively2, that EVA film only adulterates (dipping) YAB is glimmering
Light-emitting material and the present embodiment EVA film adulterate (dipping) YAB/SiO2Synergy EVA film obtained is denoted as A, B, C and D respectively,
Its J-V curve and data in battery applications is shown in Fig. 2 and table 1 respectively.As it can be seen that doping (dipping) YAB/SiO2Afterwards, cell light
Photoelectric transformation efficiency improves 0.81%.
Table 1
Embodiment 13
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
Oven temperature in step 4) is set as 50 DEG C.
Embodiment 14
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
Oven temperature in step 4) is set as 40 DEG C.
Embodiment 15
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
To place the time in baking oven in step 4) is set as 2h.
Embodiment 16
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
Film in step 5) is placed in hot-forming in 90 DEG C.
Embodiment 17
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
Film in step 5) is placed in hot-forming in 130 DEG C.
Embodiment 18
By it is above-mentioned it is hot-forming after the sheet glass of EVA film be covered on naked silicon cell, can be detected cell piece J-V
The using effect of curve and EVA conversion film.
Embodiment 19
The photoelectricity that crystal silicon battery can be improved in the encapsulation that EVA conversion film made from embodiment 13 directly applies to cell piece is turned
Change efficiency.
Embodiment 20
The present embodiment is substantially the same manner as Example 4, the difference is that, the non-polar organic solvent in the present embodiment is stone
The volume ratio of oily ether, dehydrated alcohol and petroleum ether is 1:1.
Embodiment 21
The present embodiment is substantially the same manner as Example 4, the difference is that, the non-polar organic solvent in the present embodiment is first
The volume ratio of benzene, dehydrated alcohol and toluene is 10:1.
Embodiment 22
The present embodiment is substantially the same manner as Example 4, the difference is that, the non-polar organic solvent in the present embodiment is second
The volume ratio of glycol, dehydrated alcohol and ethylene glycol is 5:1.
Embodiment 23
The present embodiment is substantially the same manner as Example 1, the difference is that, step 4) YAB fluorescent emission material in the present embodiment
The partial size of material is 1~3 μm, the SiO of addition2Aeroge is 2g, and partial size is 10~100nm.
Embodiment 24
The present embodiment is substantially the same manner as Example 1, the difference is that, step 4) YAB fluorescent emission material in the present embodiment
The partial size of material is 1~3 μm, the SiO of addition2Aeroge is 40g, and partial size is 10~100nm.
Embodiment 25
The present embodiment is substantially the same manner as Example 1, the difference is that, the SiO that step 4) is added in the present embodiment2Gas
Gel is commercially available TSA-270L type.
Embodiment 26
The present embodiment is substantially the same manner as Example 1, the difference is that, the SiO that step 4) is added in the present embodiment2Gas
Gel is commercially available A380 type.
Embodiment 27
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
By YAB/SiO in step 2)2The additional amount of near infrared emission material is 5g.
Embodiment 28
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
By YAB/SiO in step 2)2The additional amount of near infrared emission material is 500g.
Embodiment 29
A kind of preparation method of near infrared emission EVA film provided in this embodiment, it is substantially the same manner as Example 4, difference
Place be:
By YAB/SiO in step 2)2The additional amount of near infrared emission material is 6g.
Embodiment 30
The present embodiment is substantially the same manner as Example 1, the difference is that, by uniformly mixed powder in the step 3) of the present embodiment
Expect in high temperature furnace at 1150 DEG C, high temperature sintering 5 hours.
Embodiment 31
The present embodiment is substantially the same manner as Example 1, the difference is that, by uniformly mixed powder in the step 3) of the present embodiment
Expect in high temperature furnace at 1000 DEG C, high temperature sintering 8 hours.
Embodiment 32
The present embodiment is substantially the same manner as Example 1, the difference is that, by uniformly mixed powder in the step 3) of the present embodiment
Expect in high temperature furnace at 1400 DEG C, high temperature sintering 3 hours.
Embodiment 33
The present embodiment is substantially the same manner as Example 1, the difference is that, the work of the step 4) of the present embodiment in dehydrated alcohol
Wet ball grinding is carried out under, Ball-milling Time is for 24 hours.
Embodiment 34
The present embodiment is substantially the same manner as Example 1, the difference is that, the step 4) of the present embodiment is in volume fraction
Wet ball grinding, Ball-milling Time 1h are carried out under the action of 95% ethanol solution.
Embodiment 35
The present embodiment is substantially the same manner as Example 1, the difference is that, the change of YAB fluorescent emissive materials in the present embodiment
Formula is Y1-y-zMzAl3-x(BO3)4:Cr3+ x,Yb3+ y, wherein M is Bi3+And La3+One or both of, 0 < x≤0.2,0 < y≤
0.2,0≤z≤0.2；According to Y in step 1)3+、Al3+、Bi3+、La3+、Yb3+Oxide and H3BO3With Cr salt according to chemical formula
Y1-y-zMzAl3-x(BO3)4:Cr3+ x,Yb3+ yIn the composition of each element weighed.
The above is presently preferred embodiments of the present invention, but the present invention should not be limited to disclosed in the embodiment
Content.So all do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, the model that the present invention protects is both fallen within
It encloses.
Claims (9)
1. a kind of YAB/SiO2The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared, which is characterized in that including
Following steps:
It (1) is that 1~10:1 is configured to mixed solvent according to volume ratio by dehydrated alcohol and non-polar organic solvent；
(2) by YAB/SiO2In the mixed solvent is added in the micro-nano composite luminescent material of near-infrared, stirs and ultrasound is to 30~50 DEG C,
Slurry, the YAB/SiO is made2The mass volume ratio of the micro-nano composite luminescent material of near-infrared and mixed solvent be 0.01~
1g:100mL；
(3) using the method for surface swelling, commercially available EVA film is impregnated in the slurry made from step (2), it is then obtained by drying
YAB/SiO2The micro-nano composite luminescent material synergy EVA film of near-infrared；
Non-polar organic solvent described in step (1) includes chloroform, petroleum ether, toluene or ethylene glycol.
Dip time described in step (3) is 5~100s, and drying temperature is 30~50 DEG C.
2. YAB/SiO according to claim 12The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared,
Non-polar organic solvent described in step (1) is chloroform.
3. YAB/SiO according to claim 12The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared,
It is characterized in that, the volume ratio of the dehydrated alcohol and non-polar organic solvent is 3:1, the YAB/SiO2Near-infrared is micro-
The mass volume ratio of nano combined luminescent material and mixed solvent is 0.012g:100mL.
4. YAB/SiO according to claim 12The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared,
It is characterized in that, YAB/SiO described in step (2)2The preparation method of the micro-nano composite luminescent material of near-infrared includes following
Step:
By clean YAB fluorescent emissive materials and aerosil according to mass ratio 100:1~20 mix, then go from
Wet ball grinding is carried out under the action of sub- water, dehydrated alcohol or ethanol solution, then after drying, crushing, YAB/SiO is made2It is close red
Outer micro-nano composite luminescent material.
5. YAB/SiO according to claim 42The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared,
It is characterized in that,
The partial size of the YAB fluorescent emissive materials is 1~3 μm, the partial size of the aerosil is 10~
100nm；
The mass ratio of the YAB fluorescent emissive materials and aerosil is 100:8；
The time of the wet ball grinding be 1~for 24 hours；
Drying temperature is 80~150 DEG C；
The aerosil is selected from one of commercially available TSA-270L or A380.
6. YAB/SiO according to claim 42The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared,
It is characterized in that, the chemical formula of the YAB fluorescent emissive materials is Y1-y-zMzAl3-x(BO3)4:Cr3+ x,Yb3+ y, wherein M be
Bi3+And La3+One or both of, 0 < x≤0.2,0 < y≤0.2,0≤z≤0.2；The fluorescent emissive materials preparation method packet
Include following steps:
(a) by Y3+、Al3+、Bi3+、La3+、Yb3+Oxide and H3BO3With Cr salt according to chemical formula Y1-y-zMzAl3-x(BO3)4:
Cr3+ x,Yb3+ yIn the ratio of components of each element carry out being mixed to get mixture,
(b) dehydrated alcohol is added in the mixture that step (a) obtains and grinds drying, the mixed-powder after drying is warming up to
It 1000 DEG C~1400 DEG C, is sintered 3~8 hours,
Or the mixture high-speed stirred for obtaining step (a) is uniform, then heats to 1000 DEG C~1400 DEG C and is sintered 3~8 hours.
7. YAB/SiO according to claim 62The preparation method of the micro-nano composite luminescent material synergy EVA film of near-infrared,
It is characterized in that, the sintering temperature in step (b) is 1150 DEG C, sintering time is 5 hours.
8. the YAB/SiO that preparation method as described in claim 1 is prepared2The micro-nano composite luminescent material synergy of near-infrared
EVA film, which is characterized in that by EVA film and the YAB/SiO for being supported on EVA film surface2The micro-nano composite luminescent material group of near-infrared
At the YAB/SiO2The partial size of the micro-nano composite luminescent material of near-infrared is 10~1000nm.
9. YAB/SiO as claimed in claim 82The micro-nano composite luminescent material synergy EVA film of near-infrared is in silicon solar cell
Application in synergy.
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