CN103177791B - A kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof - Google Patents
A kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof Download PDFInfo
- Publication number
- CN103177791B CN103177791B CN201110437783.6A CN201110437783A CN103177791B CN 103177791 B CN103177791 B CN 103177791B CN 201110437783 A CN201110437783 A CN 201110437783A CN 103177791 B CN103177791 B CN 103177791B
- Authority
- CN
- China
- Prior art keywords
- solar batteries
- conductive electric
- aluminum conductive
- electric slurry
- slurry used
- 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.)
- Active
Links
Abstract
The invention provides a kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof, the component of described aluminum conductive electric slurry used for solar batteries comprises aluminium powder, glass dust, organic carrier and inorganic additive powder; The middle particle diameter D of described inorganic additive powder
50for 0.1-5.0 μm, and be selected from one or more of beta-eucryptite, tungsten wire array or vanadic acid zirconium.Aluminum conductive electric slurry used for solar batteries provided by the invention is adopted to be screen-printed on crystal-silicon solar cell and after sintering film forming, metal film is to silicon substrate adhesion-tight, smooth surface is fine and close, without aluminium pill, aluminium blister, photoelectric conversion efficiency is high, cell piece angularity is little, and the average angularity of 156 × 156 type polycrystalline silicon solar cell sheets is less than 0.50mm.
Description
Technical field
The invention belongs to technical field of solar batteries, be specifically related to a kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof.
Background technology
Solar cell is a kind of inexhaustible environmental protection regenerative resource, and current international research is very active.Aluminum conductive electric slurry belongs to one of electronic information material, is also the main auxiliary material making solar cell simultaneously.In current crystal silicon solar batteries manufacture craft, aluminum conductive electric slurry is almost printed on the whole shady face of battery, and due to metallic aluminium, (coefficient of expansion is 232 × 10
-7/ DEG C, 20-300 DEG C) (coefficient of expansion is 26 × 10 with silicon
-7/ DEG C, 20-300 DEG C) the difference of thermal coefficient of expansion, causing aluminum conductive electric slurry when sintering, in silicon chip, producing stress, cause silicon chip to bend.
In order to reduce the manufacturing cost of crystal-silicon solar cell further, strengthen the competitiveness that itself and traditional energy generate electricity, the thickness of silicon chip from before 210 μm be reduced to current 180 μm gradually, and still downward trend.Constantly thinning along with silicon wafer thickness, after traditional aluminium paste sintering, the easier warpage of cell piece, directly affects the rate of finished products of solar cell and follow-up component process.In prior art, reducing silicon warp has many methods, such as, can reduce transfer amount when aluminium paste prints, reduce sintering temperature or make matrix produce plastic deformation etc. by special cooling technology.
CN101728439A discloses a kind of composition and preparation method of silicon solar cell aluminum back-surface-field conductive paste, by the flexibility of battery that formed after adding the metal of 2-6 μm of 0.5-6.0wt% or non-metal powder additive (in boron, silicon, zinc, antimony, tin one or more) and improving obtained aluminium paste sintering and electrical property in the method.But in such additive, the fusing point of non-metal powder boron and silicon is very high, far exceed the fusing point of aluminium, it mixes by means of only simple and mechanical with aluminium, therefore uniform alloy can not be formed with base metal aluminium under the sintering process of crystal silicon cell general at present, therefore can not improving the flexibility of cell piece, even may reduce the photoelectric conversion efficiency of battery because introducing impurity.And metal dust zinc, antimony, the tin in such additive, even if sintering is rear and aluminium powder forms alloy, but the coefficient of expansion of its alloy formed differs comparatively large with the coefficient of expansion of cell piece silicon substrate, therefore adds metal powder also unhelpful to the flexibility improving cell piece.Therefore, aluminum conductive electric slurry disclosed in currently available technology is adopted still to be difficult to the low warpage requirement meeting cell piece.
Summary of the invention
Cause silicon chip to bend after the invention solves the solar cell aluminum conductive electric slurry sintering existed in prior art, photoelectric conversion efficiency can not meet the problem that battery further develops.
The invention provides a kind of aluminum conductive electric slurry used for solar batteries, the component of described aluminum conductive electric slurry used for solar batteries comprises aluminium powder, glass dust, organic carrier and inorganic additive powder; The middle particle diameter D of described inorganic additive powder
50for 0.1-5.0 μm, and be selected from one or more of beta-eucryptite, tungsten wire array or vanadic acid zirconium.
Present invention also offers the preparation method of described aluminum conductive electric slurry used for solar batteries, comprise and glass dust and inorganic additive powder are scattered in organic carrier, then add aluminium powder in batches, after grinding, obtain described aluminum conductive electric slurry used for solar batteries; The middle particle diameter D of described inorganic additive powder
50for 0.1-5.0 μm, and be selected from one or more of beta-eucryptite, tungsten wire array or vanadic acid zirconium.
Aluminum conductive electric slurry used for solar batteries provided by the invention, by improving formula of size, minimizing aluminium film and silicon substrate layer stress produce root.In the present invention, especially by particle diameter D in employing
50one or more inorganic additive powder of beta-eucryptite, tungsten wire array or vanadic acid zirconium is selected from for 0.1-5.0 μm, thus the thermal coefficient of expansion of the rear residual mixture of slurry sintering, reduce the difference of the thermal coefficient of expansion between sintering residue and silicon materials, and then improve the warpage issues after cell piece sintering; After this aluminum conductive electric slurry printing to silicon substrate sinters film forming, cell piece angularity is little, the smooth densification of aluminium film, and without aluminium pill aluminium blister, photoelectric conversion efficiency is high.As can be seen from the results contrast of embodiment 1-4 and comparative example 1-4, print the crystalline silicon solar cell piece of aluminum conductive electric slurry used for solar batteries provided by the invention, the aluminium film obtained after sintering and silicon substrate adhesion-tight, smooth surface, do not play aluminium pill and aluminium blister, cell piece angularity is very little, and the average angularity of the polycrystalline silicon solar cell sheet of 156 × 156 types is less than 0.5mm.
Embodiment
The invention provides a kind of aluminum conductive electric slurry used for solar batteries, the component of described aluminum conductive electric slurry used for solar batteries comprises aluminium powder, glass dust, organic carrier and inorganic additive powder; The middle particle diameter D of described inorganic additive powder
50for 0.1-5.0 μm, and be selected from one or more of beta-eucryptite, tungsten wire array or vanadic acid zirconium.
Because the back field aluminum paste of current industry universal is generally formed by aluminium powder, glass dust, organic carrier agitation grinding, after aluminium paste printing-sintering, what stay silicon chip back side is aluminium powder and a small amount of glass dust playing bonding effect.Due to metallic aluminium, (coefficient of expansion is 232 × 10
-7/ DEG C, 20-300 DEG C) (coefficient of expansion is 26 × 10 with silicon
-7/ DEG C, 20-300 DEG C) difference of thermal expansion coefficients of material is comparatively large, and after causing back surface field aluminium film to cool, in silicon chip, produce stress, cause the bending of silicon chip.
The present inventor is found by great many of experiments, and by adding a certain amount of inorganic particle in aluminum conductive electric slurry in the present invention, such inorganic powder material has larger negative expansion coefficient, and has isotropism, response temperature wide ranges; After aluminium powder, glass dust and organic carrier mixed grinding in such negative expansion inorganic powder material and slurry, namely aluminum conductive electric slurry used for solar batteries of the present invention is obtained, by adopting aluminum conductive electric slurry used for solar batteries of the present invention, the thermal coefficient of expansion of the residue after slurry sintering is compared metallic aluminium and is greatly reduced, therefore reduce the difference of the coefficient of thermal expansion of slurry sintering residue and silicon materials, therefore improve the warpage issues after cell piece sintering largely.
In the present invention, described inorganic additive powder is selected from beta-eucryptite, tungsten wire array or vanadic acid zirconium.Wherein, the mean thermal expansion coefficients of beta-eucryptite in 0-1000 DEG C is-6.4 × 10
-6/ DEG C.Tungsten wire array has isotropic negative expansion effect between 0.3-777 DEG C, and its negative expansion coefficient reaches as high as-8.7 × 10
-6/ DEG C, and the temperature range of its negative expansion coefficient is also wider.
Therefore, in the conventional sintering range of described beta-eucryptite, tungsten wire array and vanadic acid zirconium aluminium paste in the prior art, there is larger negative expansion coefficient.Therefore, by adopting beta-eucryptite, tungsten wire array or vanadic acid zirconium as the inorganic additive powder in slurry in the present invention, greatly can reduce the thermal coefficient of expansion of slurry, thus improve the warpage issues after cell piece sintering.
Meanwhile, in the present invention, in described aluminum conductive electric slurry used for solar batteries, the middle particle diameter D of the inorganic additive powder adopted
50for 0.1-5.0 μm.The median particle diameter of described inorganic additive can not be too large, otherwise can not well be filled between aluminium powder and glass dust, and after impact sintering, the electric conductivity of aluminium film, affects battery efficiency.In addition, the median particle diameter of described inorganic additive can not be too little, otherwise processing difficulties and material cost raise.Under preferable case, the middle particle diameter D of described inorganic additive
50for 0.5-3.0 μm.
In inorganic additive powder of the present invention, in slurry high-temperature sintering process, beta-eucryptite (Li
2oAl
2o
32SiO
2) composition of lithia, aluminium oxide and silica, tungsten wire array (ZrO can be regarded as
2wO
3) composition of tungstic acid and zirconium dioxide can be regarded as, and vanadic acid zirconium (ZrO
2v
2o
5) composition of vanadic oxide and zirconium dioxide can be regarded as.Under the sintering process of crystal-silicon solar cell, glass dust in described inorganic additive powder and slurry fuses mutually, thus become a part for slurry binding agent, after increasing sintering, aluminium film is to the adhesive force of silicon substrate, also can reduce the addition of the glass dust in slurry simultaneously, thus ensure the content of slurry system aluminium powder, the reduction of the photoelectric conversion efficiency of cell piece is caused to avoid the minimizing of conducting objects.
Under preferable case, in the present invention, described inorganic additive powder is beta-eucryptite.Because beta-eucryptite wolframic acid zirconium, vanadic acid zirconium more easily obtain, and can stand variations in temperature sharply, there is not any change in performance.In addition, beta-eucryptite compares tungsten wire array, vanadic acid zirconium, has larger average negative expansion coefficient in relevant temperature region.In the present invention, described inorganic additive powder is prepared by oneself, also directly can adopt commercially available prod, such as, can adopt the eucryptite powder of the negative thermal expansion coefficient series of Tianjin Hong Teng electronic ceramic Co., Ltd.
In the present invention, in described aluminum conductive electric slurry used for solar batteries, the content of aluminium powder, glass dust and inorganic carrier is all in those skilled in the art's usual range, and the present invention does not have particular provisions.Such as, with the total weight of described aluminum conductive electric slurry used for solar batteries for benchmark, the content of aluminium powder is 60-85wt%, and the content of glass dust is 0.2-8.0wt%, and the content of organic carrier is 15-30wt%.
With the total weight of described aluminum conductive electric slurry used for solar batteries for benchmark, in the present invention, the content of described inorganic additive powder is 0.5-5.0wt%.Although the consumption of described inorganic additive is relative to smaller aluminium powder, according to the additive property of thermal coefficient of expansion, the residual mixture obtained after slurry sintering still has positive thermal expansion character, and its coefficient of expansion is compared metallic aluminium and greatly reduced.Meanwhile, the present inventor found through experiments, and in slurry, inorganic additive powder content is too much, may affect the electric conductivity of the rear aluminium film of sintering, and the very few effect not having reduction cell piece angularity.
In the present invention, described aluminium powder is various aluminium powders conventional in existing aluminum conductive electric slurry.Such as, described aluminium powder is the ball aluminum powder of active aluminium content more than 98.5% that nitrogen atomization method obtains.Under preferable case, the middle particle diameter D of described aluminium powder
50for 2.0-8.0 μm.In the present invention, described aluminium powder directly can adopt commercial products, and the median particle diameter D50 that ocean, Henan company such as can be adopted to produce is that 2.0 ~ 8.0 μm of spherical aluminium powders or Hunan limited company of Hengchang produce D
50be less than the spherical aluminium powder of 8.0 μm.
In the present invention, described glass dust can adopt various lead-free glass powders conventional in prior art, such as, can adopt Bi
2o
3-B
2o
3-SiO
2glass frit.Described Bi
2o
3-B
2o
3-SiO
2consisting of of glass frit: bismuth oxide (Bi
2o
3) account for 30-70wt%, diboron trioxide (B
2o
3) account for 5-30wt%, silicon dioxide (SiO
2) accounting for 2-15wt%, calcium oxide (CaO) accounts for 1.0-5.0wt%, and magnesium oxide (MgO) accounts for 0.2-8.0wt%, aluminium oxide (Al
2o
3) accounting for 0-5.0wt%, barium monoxide (BaO) accounts for 0-3.0wt%.Described Bi
2o
3-B
2o
3-SiO
2glass frit directly can adopt commercial products, but also oneself synthesis, and synthetic method is: mixed in proportion by above all kinds of oxide powder, melting, shrend, filtration, oven dry, is ground to required particle diameter and namely obtains described Bi
2o
3-B
2o
3-SiO
2glass frit.Under preferable case, in the present invention, the middle particle diameter D of described glass dust
50for 0.2-3.0 micron.The beginning fusing point of described glass dust is 580-620 DEG C.
The middle particle diameter D of above-mentioned inorganic additive powder, aluminium powder, glass dust
50all test by the method for particle diameter in existing test and instrument, such as, BT-9300 type laser particle size analyzer can be adopted to test.
Organic carrier of the present invention is the mixed system containing ethyl cellulose, auxiliary agent and solvent conventional in prior art.With the gross mass of described organic carrier for benchmark, wherein the content of ethyl cellulose is 3.0-15wt%, and the content of auxiliary agent is 0.5-5.0wt%, and the content of solvent is 70-95wt%.Wherein, described solvent can adopt the combination of multi-solvents conventional in prior art, is mixed solvent.Such as, described mixed solvent can be selected from two or more in terpinol, dibutyl phthalate (DBP), butyl carbitol, turpentine oil, butyl glycol ether, butyl carbitol acetate, ethylene glycol ether acetate, tributyl citrate, butyl carbitol acetate, dibutyl phthalate, tributyl phosphate.Described auxiliary agent be selected from hexadecanol, octadecyl alcolol, polyamide wax powder, rilanit special one or more.
Present invention also offers the preparation method of described aluminum conductive electric slurry used for solar batteries, comprise and glass dust and inorganic additive powder are scattered in organic carrier, then add aluminium powder in batches, after grinding, obtain described aluminum conductive electric slurry used for solar batteries; The middle particle diameter D of described inorganic additive powder
50for 0.1-5.0 μm, and be selected from one or more of beta-eucryptite, tungsten wire array or vanadic acid zirconium.
Particularly, the compound method of described inorganic carrier is: ethyl cellulose and auxiliary agent are dissolved and add in mixed solvent, make ethyl cellulose, auxiliary agent fully dissolve and stir, namely obtain transparent organic carrier at 20-70 DEG C.
In the present invention, dispersed for ensureing aluminium powder and glass dust, inorganic additive powder, described aluminium powder is for add in batches.Under preferable case, the number of times in batches of aluminium powder is 2-3 time, stirs at every turn, then add next batch after adding; After all adding, high-speed stirred is even.Described grinding can adopt three-roll grinder to carry out, and grinding number of times is 10-15 time, is ground to slurry fineness to < 20 μm, namely obtains conductive paste for solar cell provided by the invention.
Below by embodiment, the present invention is further illustrated.In embodiment and comparative example adopt raw material to be all commercially available.
Embodiment 1
The present embodiment is for illustration of solar cell conductive paste disclosed by the invention and preparation method thereof.
(1) preparation of glass dust
Get the bismuth oxide (Bi of 55wt%
2o
3), the diboron trioxide (B of 25wt%
2o
3), 15wt% silicon dioxide (SiO
2), the calcium oxide (CaO) of 3.5wt%, the magnesium oxide (MgO) of 1.5wt%, adopts V-Mixer each component to be mixed, and loads in porcelain crucible, put into silicon carbide rod furnace, intensification is preheating to 550 DEG C, insulation 0.5h, then rises to 1250 DEG C, melting 0.5h, shrend is filtered, and the bead obtained is loaded ball grinder, and Mass Control is than zirconia ball: bead: deionized water=4:1:0.6, rotating speed 250 revs/min, ball milling 7h, filters post-drying, then the 0.5h that dry grinds, during dry grinding, the mass ratio of zirconia ball and glass dust is 1:2, obtains middle particle diameter D
50be the glass dust of 1.5 μm, for subsequent use.
(2) preparation of organic carrier
According to quality than butyl carbitol: terpinol: butyl carbitol acetate: dibutyl phthalate (DBP)=75:10:10:5, mixes each organic solvent, obtain mixed solvent.Get the mixed solvent of 90 weight portions, add 7.5 weight portion ethyl cellulose STD-4(Tao Shi and produce, viscosity is 4), 2 parts by weight of hydrogenated castor oil, 0.5 weight portion hexadecanol, is heated to 70 DEG C and makes abundant dissolving, stir and obtain the organic carrier of homogeneous clarification.
(3) preparation of aluminum conductive electric slurry
Get the organic carrier obtained by step (2) of 22 weight portions, be placed in the stainless cylinder of steel of high speed dispersor, the obtained glass dust of 1.5 weight portion steps (1) and 2.5 weight portion beta-eucryptite powder (Tianjin Hong Teng electronic ceramic Co., Ltd, middle particle diameter D is added under stirring
50be 1.5 μm), stir.2 batches are divided to add 74 weight portion ball aluminum powder (the ultrapure aluminium powder that ocean, Henan company produces, middle particle diameter D again
50be 4.5 μm), every batch of aluminium powder adds and first to stir afterwards, then adds next batch; After all adding, high-speed stirred is even; Finally grind 15 times with the three-roll grinder of 150, be ground to slurry fineness < 20 μm, obtain the aluminum conductive electric slurry used for solar batteries of the present embodiment, be designated as S1.
Embodiment 2
The step identical with embodiment 1 is adopted to prepare the aluminum conductive electric slurry S2 used for solar batteries of the present embodiment, difference is: in step (3), the consumption of beta-eucryptite powder changes 5 weight portions into by 2.5 weight portions, the consumption of glass dust changes 0.5 weight portion into by 1.5 weight portions, and the consumption of aluminium powder changes 72.5 weight portions into by 74 weight portions.
Embodiment 3
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry S2 used for solar batteries of the present embodiment, difference is: in step (3), the middle particle diameter D of beta-eucryptite powder
505.0 μm are made into by 1.5 μm.
Embodiment 4
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry S2 used for solar batteries of the present embodiment, difference is: in step (3), adopts the beta-eucryptite powder in tungsten wire array alternate embodiment 1.
Comparative example 1
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry DS1 used for solar batteries of this comparative example, difference is: in step (3), do not add beta-eucryptite powder, and the consumption of glass dust changes 4 weight portions into by 1.5 weight portions simultaneously.
Comparative example 2
The step identical with embodiment 1 is adopted to prepare the aluminum conductive electric slurry DS2 used for solar batteries of this comparative example, difference is: in step (3), do not add beta-eucryptite powder, the consumption of glass powder changes 2.5 weight portions into by 1.5 weight portions simultaneously, and the consumption of aluminium powder changes 75.5 weight portions into by 74 weight portions.
Comparative example 3
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry DS3 used for solar batteries of this comparative example, difference is: in step (3), the middle particle diameter D of beta-eucryptite powder
506.0 μm are made into by 1.5 μm.
Comparative example 4
Adopt the method for CN101728439A to prepare the solar cell aluminum conductive electric slurry DS4 of this comparative example, concrete steps are identical with embodiment 1, and difference is: in step (3), adopt the middle particle diameter D of 2.5 weight portions
50be 2.5 weight portion beta-eucryptite powder in the boron powder replacement embodiment 1 of 3.5 microns.
Performance test
Above-mentioned aluminum conductive electric slurry S1-S4 and DS1-DS4 used for solar batteries is tried out at production line respectively.Polysilicon chip specification: 156156mm, thickness is 200 μm (before corrosion), and before printing, thickness is 180 μm.First adopt 200 object silk screen printing back silver electrode slurrys (Du Pont PV505), dry, adopt 280 object meshcount printing solar cell aluminum conductive electric slurry S1-S4 and DS1-DS4 again, printing weight is 1.5 grams, every sheet slurry, bake out temperature is 125 DEG C, drying time is 4min, adopt 200 object silk screen printing fronts silver electrode paste (Du Pont 16C) again, cross continuous tunnel furnace and dry sintering, continuous tunnel furnace temperature gradient distribution, the time crossing continuous tunnel furnace is 2min, sintering peak temperature is 89010 DEG C, time is 2s, the properties of each cell piece S10-S40 and DS10-DS40 is tested after coming out of the stove.
(1) surface appearance: range estimation back surface field surface appearance, smooth, without aluminium pill or aluminium blister, be designated as OK, otherwise be NG.
(2) adhesive force: soak each cell piece 7 days with running water under room temperature, back surface field metal film does not come off or gently scrapes with blunt and do not come off, and is designated as OK, otherwise is NG.
(3) angularity: by the degree of crook vernier caliper measurement of cell piece, unit is mm.Repeat 100 times, the mean value of record angularity.
(4) electricity conversion: adopt single flash operation simulator to test each cell piece according to method disclosed in IEC904-1.Test condition is standard test condition (STC): light intensity: 1000W/m
2; Spectrum: AM1.5; Temperature: 25 DEG C.Repeat 100 times, the mean value of record electricity conversion.
Test result as shown in Table 1 and Table 2.
Table 1
| Test item | S10 | S20 | S30 | S40 |
| Surface appearance | OK | OK | OK | OK |
| Adhesive force | OK | OK | OK | OK |
| Angularity (mm) | 0.10-0.30 | 0.30-0.50 | 0.30-0.50 | 0.20-0.40 |
| Electricity conversion | 17. 40% | 17.23% | 17.25% | 17.31% |
Table 2
| Test item | DS10 | DS20 | DS30 | DS40 |
| Surface appearance | OK | OK | OK | OK |
| Adhesive force | OK | OK | NG | NG |
| Angularity (mm) | 0.80-1.10 | 1.20-1.50 | 0.40-0.60 | 0.80-1.00 |
| Electricity conversion | 17.18% | 17.22% | 17.23% | 17.12% |
As can be seen from the results contrast of upper table 1 and table 2, aluminum conductive electric slurry used for solar batteries provided by the invention is adopted to be screen-printed on crystal-silicon solar cell and after sintering film forming, obtain the smooth densification of aluminium film, without aluminium pill, aluminium blister, photoelectric conversion efficiency is high, cell piece angularity is little, and the average angularity of 156 × 156 type polycrystalline silicon solar cell sheets is less than 0.50mm.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. an aluminum conductive electric slurry used for solar batteries, is characterized in that, the component of described aluminum conductive electric slurry used for solar batteries comprises aluminium powder, glass dust, organic carrier and inorganic additive powder; With the total weight of described aluminum conductive electric slurry used for solar batteries for benchmark, the content of described inorganic additive powder is 0.5-5.0wt%, the middle particle diameter D of described inorganic additive powder
50for 0.1-5.0 μm, and be selected from one or more of beta-eucryptite, tungsten wire array or vanadic acid zirconium.
2. aluminum conductive electric slurry used for solar batteries according to claim 1, is characterized in that, described inorganic additive powder is beta-eucryptite.
3. aluminum conductive electric slurry used for solar batteries according to claim 1, is characterized in that, the middle particle diameter D of described inorganic additive powder
50for 0.5-3.0 μm.
4. the aluminum conductive electric slurry used for solar batteries according to any one of claim 1-3, it is characterized in that, with the total weight of described aluminum conductive electric slurry used for solar batteries for benchmark, the content of aluminium powder is 60-85wt%, the content of glass dust is 0.2-8.0wt%, and the content of organic carrier is 15-30wt%.
5. aluminum conductive electric slurry used for solar batteries according to claim 1, is characterized in that, described aluminium powder is the atomization ball aluminum powder of active aluminium content more than 98.5%.
6. aluminum conductive electric slurry used for solar batteries according to claim 1, is characterized in that, described glass dust is Bi
2o
3-B
2o
3-SiO
2glass frit.
7. the aluminum conductive electric slurry used for solar batteries according to any one of claim 1,5,6, is characterized in that, the middle particle diameter D of described aluminium powder
50for 2.0-8.0 μm, the middle particle diameter D of glass dust
50for 0.2-3.0 μm.
8. aluminum conductive electric slurry used for solar batteries according to claim 1, is characterized in that, described organic carrier contains the ethyl cellulose of 3.0-15wt%, auxiliary agent and the mixed solvent accounting for 70-95wt% of 0.5-5.0wt%.
9. aluminum conductive electric slurry used for solar batteries according to claim 8, it is characterized in that, described mixed solvent be selected from terpinol, dibutyl phthalate, butyl carbitol, turpentine oil, butyl glycol ether, butyl carbitol acetate, ethylene glycol ether acetate, tributyl citrate, butyl carbitol acetate, tributyl phosphate two or more.
10. the preparation method of aluminum conductive electric slurry used for solar batteries according to claim 1, it is characterized in that, comprise and glass dust and inorganic additive powder are scattered in organic carrier, then add aluminium powder in batches, after grinding, obtain described aluminum conductive electric slurry used for solar batteries; The middle particle diameter D of described inorganic additive powder
50for 0.1-5.0 μm, from one or more of beta-eucryptite, tungsten wire array or vanadic acid zirconium.
11. preparation methods according to claim 10, is characterized in that, the number of times of described grinding is 10-15 time, to slurry fineness < 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437783.6A CN103177791B (en) | 2011-12-23 | 2011-12-23 | A kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437783.6A CN103177791B (en) | 2011-12-23 | 2011-12-23 | A kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103177791A CN103177791A (en) | 2013-06-26 |
| CN103177791B true CN103177791B (en) | 2015-12-09 |
Family
ID=48637587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110437783.6A Active CN103177791B (en) | 2011-12-23 | 2011-12-23 | A kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103177791B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751939B (en) * | 2013-12-31 | 2017-05-31 | 比亚迪股份有限公司 | A kind of crystal silicon solar energy battery aluminum conductive electric slurry |
| CN105989910A (en) * | 2015-02-10 | 2016-10-05 | 磐采股份有限公司 | Conductive alumina glue used for local back side field solar cell and the solar cell |
| CN104733075B (en) * | 2015-03-27 | 2016-12-07 | 西安腾星电子科技有限公司 | Curved surface moves printing slurry |
| CN105225722A (en) * | 2015-10-22 | 2016-01-06 | 江苏泓源光电科技股份有限公司 | A kind of crystal silicon solar batteries aluminium paste of high conduction performance |
| CN108428493A (en) * | 2018-04-08 | 2018-08-21 | 通威太阳能（安徽）有限公司 | A kind of unleaded crystal silicon solar batteries back field aluminum paste and preparation method thereof |
| CN109524148A (en) * | 2018-11-29 | 2019-03-26 | 武汉硕美特电子材料有限公司 | A kind of organic additive modified PE RC aluminium paste |
| CN112018431B (en) * | 2020-09-02 | 2022-07-15 | 安徽天时新能源科技有限公司 | Electrolyte for high-temperature lithium battery |
| CN112018375B (en) * | 2020-09-02 | 2022-07-15 | 安徽天时新能源科技有限公司 | Lithium ion battery cathode material and preparation method thereof |
| CN113289507B (en) * | 2021-05-10 | 2023-02-03 | 内蒙古旭阳新材料有限公司 | Wet aluminum powder production equipment and method |
| CN114094059B (en) * | 2021-09-28 | 2023-04-28 | 格林美(湖北)新能源材料有限公司 | Composite nano-layer coated cobalt-free single crystal positive electrode material and preparation method thereof |
| CN116543947B (en) * | 2023-06-26 | 2023-10-31 | 浙江晶科新材料有限公司 | Additive of silver-aluminum paste of N-type solar cell, preparation method of additive and silver-aluminum paste |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246890A (en) * | 1992-08-03 | 1993-09-21 | Corning Incorporated | Non-lead sealing glasses |
| JP2002356350A (en) * | 2001-03-27 | 2002-12-13 | Hoya Corp | Glass ceramic, glass ceramic substrate, opposing substrate for liquid crystal panel and dust protecting substrate for liquid crystal panel |
| CN101210292A (en) * | 2007-12-24 | 2008-07-02 | 哈尔滨工业大学 | Method for preparing copper-base composite material containing beta-eucryptite |
| CN101728439A (en) * | 2009-12-01 | 2010-06-09 | 洛阳神佳电子陶瓷有限公司 | Aluminum pulp composition of crystal silicon solar cell and preparation method thereof |
| CN101931013A (en) * | 2009-06-26 | 2010-12-29 | 比亚迪股份有限公司 | Solar cell conductive paste and preparation method thereof |
-
2011
- 2011-12-23 CN CN201110437783.6A patent/CN103177791B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246890A (en) * | 1992-08-03 | 1993-09-21 | Corning Incorporated | Non-lead sealing glasses |
| JP2002356350A (en) * | 2001-03-27 | 2002-12-13 | Hoya Corp | Glass ceramic, glass ceramic substrate, opposing substrate for liquid crystal panel and dust protecting substrate for liquid crystal panel |
| CN101210292A (en) * | 2007-12-24 | 2008-07-02 | 哈尔滨工业大学 | Method for preparing copper-base composite material containing beta-eucryptite |
| CN101931013A (en) * | 2009-06-26 | 2010-12-29 | 比亚迪股份有限公司 | Solar cell conductive paste and preparation method thereof |
| CN101728439A (en) * | 2009-12-01 | 2010-06-09 | 洛阳神佳电子陶瓷有限公司 | Aluminum pulp composition of crystal silicon solar cell and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103177791A (en) | 2013-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103177791B (en) | A kind of aluminum conductive electric slurry used for solar batteries and preparation method thereof | |
| JP6916030B2 (en) | Conductive paste composition and semiconductor devices produced thereby | |
| CN102629496B (en) | Crystalline silicon solar battery front side electrode lead-free conductive lead slurry and preparation method of crystalline silicon solar battery front side electrode lead-free conductive lead slurry | |
| CN102126829B (en) | Lead-free glass powder, preparation method thereof, silver paste containing glass powder and crystal silicon solar cell manufactured by using silver paste | |
| CN111499208B (en) | Glass material for front silver paste of monocrystalline silicon solar cell and preparation method and application thereof | |
| CN104751942B (en) | Solaode fine rule silk screen printing unleaded electrocondution slurry and preparation method thereof | |
| CN103514973B (en) | Conductive paste for solar cell and preparation method thereof | |
| JP2013089600A (en) | Thick film silver paste and its use in manufacture of semiconductor devices | |
| JP2015511205A (en) | Low resistance contact solar cell paste | |
| CN102290118A (en) | Electronic silver paste and preparation process thereof | |
| JP2018078120A (en) | Thick-film composition containing antimony oxides and their use in manufacture of semiconductor devices | |
| CN102360584B (en) | Carbon black additive-contained conductive slurry utilized by photovoltaic cell and preparation method thereof | |
| KR101434167B1 (en) | Silver paste composition used in the preparation of an electrode for a solar cell | |
| CN103295659B (en) | Conductive paste for solar cell and preparation method thereof | |
| KR20120025972A (en) | Zno-based glass frit composition and aluminium paste composition for rear contacts of solar cell using the same | |
| CN106504814A (en) | Glass dust, positive silver paste and preparation method thereof | |
| CN103199128B (en) | A kind of high temperature resistant low warpage aluminium paste | |
| CN103204632B (en) | Conductive glass powder and preparation method thereof, crystal silicon solar energy battery aluminum conductive electric slurry and preparation method | |
| CN102332321A (en) | Low angularity solar cell leadless aluminum slurry and preparation method thereof | |
| CN105968889A (en) | Low temperature lead-free green glass paste | |
| CN111415766B (en) | Conductive paste for front electrode of solar cell, preparation method and application | |
| CN104319043B (en) | Manufacturing method of negative-temperature-coefficient thermistor chip electrode | |
| CN104700923A (en) | Solar cell back sliver paste with high photoelectric conversion efficiency and production method thereof | |
| TWI422547B (en) | A conductive paste and a solar cell element using the conductive paste | |
| CN103426496A (en) | Aluminum back field slurry applied to solar battery, preparation method thereof, preparation method of solar battery piece and solar battery piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |