CN104952512A - Al-ABSF (aluminum back surface field) conductive slurry for crystalline silicon solar cell, and manufacturing method for Al-ABSF conductive slurry - Google Patents
Al-ABSF (aluminum back surface field) conductive slurry for crystalline silicon solar cell, and manufacturing method for Al-ABSF conductive slurry Download PDFInfo
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- CN104952512A CN104952512A CN201410123183.6A CN201410123183A CN104952512A CN 104952512 A CN104952512 A CN 104952512A CN 201410123183 A CN201410123183 A CN 201410123183A CN 104952512 A CN104952512 A CN 104952512A
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Abstract
The invention discloses an Al-ABSF (aluminum back surface field) conductive slurry for a crystalline silicon solar cell, a manufacturing method for the Al-ABSF conductive slurry, and a solar cell. The conductive slurry comprises aluminum powder, inorganic glass powder, an organic carrier, and a craquelure prevention additive. The craquelure prevention additive is boron oxide powder and/or amorphous boron powder. The conductive slurry is disposed on a backlight surface of the crystalline silicon solar cell through silk-screen printing, and there is no craquelure on the surface of an aluminum film after tunnel sintering. Moreover, the surface of the aluminum film is beautiful and smooth, and has no aluminum blister and ball. The warping degree of the solar cell, the adhesive force of a silicon substrate and the photoelectric conversion efficiency can meet the requirements of the industry.
Description
Technical field
The invention belongs to crystal silicon solar energy battery field, particularly relate to a kind of crystal silicon solar energy battery aluminium back surface field electrocondution slurry and preparation method thereof.
Background technology
The current research about solar cell is very active; solar cell is expected to the mainstay becoming future electrical energy supply; crystal silicon solar energy battery is the leading products on photovoltaic market, and electrocondution slurry is the main auxiliary material making crystal silicon solar energy battery.This kind of slurry forms primarily of mixed rollings such as conductive metal powder, unorganic glass powder, organic carriers.Metal powder is as conductive phase, and its sinters afterwards and matrix silicon layer forms metal-silicon alloys, reduces the Schottky barrier of electrode and silicon interface; The Main Function of glass dust makes solidifying film layer and matrix silicon strong bonded; Organic carrier controls the rheological behavior of slurry, regulates the workability of slurry.
Aluminium back surface field electrocondution slurry is the one of such slurry, and it is printed on the whole shady face of battery, and forms PP+ knot, for battery provides the open circuit voltage (Voc) of part.Therefore, the performance quality of aluminum conductive electric slurry has important impact to the electrical property of battery and the quality of outward appearance.Research at present to aluminum conductive electric slurry, improves the photoelectric conversion efficiency of battery on the one hand by improving formula of size; Be on the other hand other performances promoting slurry, as improved outward appearance, improve aluminium film surface smoothness, reduce its impact etc. on the angularity of battery.
By changing the compositing formula of aluminum conductive electric slurry, improve the photoelectric conversion efficiency of crystal-silicon solar cell, the research of this respect is a lot.About how reducing aluminium paste also have much the research of the impact of cell piece angularity, but the research of the outward appearance of the special aluminium film for how improving after aluminium paste sintering is few.
Publication number is that the Chinese patent of CN103123812A discloses a kind of crystal silicon solar energy battery aluminium paste, and the component of described aluminium paste and parts by weight thereof are: aluminium powder 80-85 part, boron powder 30-40 part, silver powder 1-10 part, organic carrier 2-8 part, glass dust 0.5-6 part, titanate coupling agent 1-4 part, zinc stearate 0.05-2 part.
Although this slurry can suppress the cell piece after sintering to bend, its photoelectric conversion efficiency is low, the rough surface of aluminium back surface field, has segmentation crack.
Summary of the invention
The present invention solves existing solar battery aluminum back surface field electrocondution slurry to there is rough surface after sintering, have the technical problem of segmentation crack, provides a kind of smooth surface, the solar battery aluminum back surface field electrocondution slurry not having segmentation crack and preparation method thereof.
The invention provides a kind of crystal silicon solar energy battery aluminium back surface field electrocondution slurry, described electrocondution slurry comprises aluminium powder, unorganic glass powder, organic carrier and anti-segmentation crack additive; Described anti-segmentation crack additive is boron oxide powder and/or amorphous boron powder.
Present invention also offers the preparation method of this crystal silicon solar energy battery aluminium back surface field electrocondution slurry, be scattered in organic carrier, then add aluminium powder by unorganic glass powder and anti-segmentation crack additive, namely grinding obtains crystal silicon solar energy battery aluminium back surface field electrocondution slurry.
In crystal silicon solar energy battery aluminium back surface field electrocondution slurry of the present invention, with the addition of a certain amount of anti-segmentation crack additive boron oxide powder and/or amorphous state boron powder.Adopt aluminium back surface field electrocondution slurry of the present invention silk screen printing on the shady face of crystal-silicon solar cell, cross the aluminium film surface after continuous tunnel furnace sintering without segmentation crack, surface aesthetic, smooth, without aluminium blister aluminium pill phenomenon, cell piece angularity, all meet industry requirement with the performance such as adhesive force, photoelectric conversion efficiency of silicon substrate.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of crystal silicon solar energy battery aluminium back surface field electrocondution slurry, described electrocondution slurry comprises aluminium powder, unorganic glass powder, organic carrier, anti-segmentation crack additive; Described anti-segmentation crack additive is boron oxide powder and/or amorphous boron powder.
The present inventor finds that publication number is in the patent of CN103123812A, although because aluminium paste adds more boron powder, can suppress to sinter the bending of rear cell piece, but, boron powder is more far short of what is expected than the electric conductivity of aluminium powder, and, under sintering temperature conventional at present, boron and silicon are not easy to form alloy, therefore solar cell prepared by this slurry is adopted, its photoelectric conversion efficiency likely has and declines largely, and, still there is rough surface in the aluminium back surface field surface of the solar cell adopting this slurry to prepare, there is segmentation crack, if seriously coarse, then adverse influence is produced to follow-up battery component of preparing.
The present inventor draws through a large amount of experiments, the conducting metal aluminium powder of aluminum conductive electric slurry, the aluminium oxide of its surface coverage certain thickness (generally at 10-20nm), when aluminum slurry burning freezing of a furnace sinters, when the melt temperature of glass dust during temperature is higher than electrocondution slurry, the aluminium oxide on aluminium powder surface and glass dust melt erosion effect, thus cause this pellumina to break, wherein fresh aluminium elemental body is stripped out, the part aluminium contacted with silicon substrate and silicon form silicon-aluminum layer, and this silicon-aluminum layer forms PP+ knot.Be bonded with each other between aluminium simple substance and form the body layer of back surface field, between aluminium powder and aluminium powder can there is crystallization in fusion place, if the mobility of glass dust is very weak, adopt the specific area of aluminium powder large, oil absorption is large, then the fused solution of glass dust fully may not fill the crystal boundary between aluminium powder, thus presents segmentation crack at grain boundaries.
Crystal silicon solar energy battery aluminium back surface field electrocondution slurry of the present invention adopts anti-segmentation crack additive, anti-segmentation crack additive is boron oxide or at 300-600 DEG C, oxidation by air can forms the amorphous boron powder of boron oxide, the fusing point of boron oxide is generally below 450 DEG C, and the softening temperature T of the glass dust that aluminium paste of the present invention adopts
ffor 500-700 DEG C, higher than the melt temperature of boron oxide (no matter being the boron oxide added or the boron oxide being oxidized generation by unformed boron powder), therefore after glass dust solidifies, boron oxide still can flow, and the grain boundaries be packed between aluminium powder, thus the segmentation crack that elimination grain boundaries presents.
According to crystal silicon solar energy battery aluminium back surface field electrocondution slurry provided by the present invention, preferably, with the total weight of described electrocondution slurry for benchmark, the content of described aluminium powder is 70-80wt%, the content of described unorganic glass powder is 0.5-5.0wt%, the content of described organic carrier is 18-29wt%, and the content of described anti-segmentation crack additive is 0.010-0.100wt%.Because the crystal boundary between aluminium powder is extremely small, the boron oxide powder therefore in slurry of the present invention or the addition of amorphous boron powder do not need very high, and addition is too large, then may cause between the rear aluminium powder spheroid of sintering, the resistance of its conductive channel formed strengthens.
According to crystal silicon solar energy battery aluminium back surface field electrocondution slurry provided by the present invention, in order to better control the fusing point of anti-segmentation crack additive, preferably, the middle particle diameter D of described boron oxide powder
50for: 1.0 microns of <D
50￡ 10 microns.
According to crystal silicon solar energy battery aluminium back surface field electrocondution slurry provided by the present invention, in order to better control the fusing point of anti-segmentation crack additive, and be more easily oxidized, the middle particle diameter D of described amorphous boron powder
50for: 0.10 micron of <D
50￡ 2.0 microns.
According to crystal silicon solar energy battery aluminium back surface field electrocondution slurry provided by the present invention, because the addition of anti-segmentation crack additive is very small, so no matter be the boron oxide powder or amorphous state boron powder that adopt, its purity does not need very high, consider material cost, preferably, the purity of described boron oxide powder or amorphous boron powder is 395.0wt%.
According to crystal silicon solar energy battery aluminium back surface field electrocondution slurry provided by the present invention, preferably, the softening temperature T of described unorganic glass powder
ffor 500-700 DEG C.
According to crystal silicon solar energy battery aluminium back surface field electrocondution slurry provided by the present invention, described unorganic glass powder can be Bi-B-Sb-Si-Ba or Zn-B-Sb-Si-Ba glass dust, and can add CaO, MgO or Al
2o
3deng.The oxide making unorganic glass powder can be crystalline state or amorphous state, and its particle size range is also wider, as middle particle diameter D
50generally be in 0.5-20 μm.Preferably, described unorganic glass powder consist of Bi
2o
3or ZnO30-50 weight portion, B
2o
310-30 weight portion, Sb
2o
310-20 weight portion, Sb
2o
51.0-5.0 weight portion, SiO
25.0-10 weight portion, BaO 5.0-10 weight portion, CaO 0-5.0 weight portion, MgO 0-5.0 weight portion, Al
2o
30-5.0 weight portion, total amount is 100 mass parts.
According to crystal silicon solar energy battery aluminium back surface field electrocondution slurry provided by the present invention, preferably, thickener, lubricant, thixotropic agent and organic solvent is contained in described organic carrier; With organic carrier total amount for benchmark, the content of described thickener is 4.0-10wt%, and the content of described lubricant is 0.5-5.0wt%, and the content of described thixotropic agent is 0.2-2.0 wt%, and the content of described organic solvent is 85-95 wt%.
In the present invention, described thickener has no particular limits, and the various thickeners can commonly used for this area, as being at least one of ethyl cellulose, phenol-formaldehyde resin modified or epoxy resin; Described lubricant is hexadecanol or octadecyl alcolol; Described thixotropic agent is modified hydrogenated castor oil or polyamide wax powder; Described organic solvent is terpinol, dibutyl phthalate, butyl carbitol, turpentine oil, butyl glycol ether, butyl carbitol acetate, ethylene glycol ether acetate, tributyl citrate, at least two kinds in butyl carbitol acetate, dibutyl phthalate, tributyl phosphate.
In the present invention, in described organic carrier, the content of each component is in the usual range of this area, and the present invention does not have particular provisions.Such as, with the gross mass of organic carrier for benchmark, wherein the content of thickener is 4-10wt%, and lubricant content is 0.2-5.0wt%, the content of thixotropic agent is 0.2-5.0wt%, and the content of organic solvent is 85-95wt%.As a kind of preferred implementation of the present invention, described organic solvent is the mixture of terpinol, ethylene glycol ether acetate and butyl carbitol.More preferably in situation, with the organic solvent of 100 weight portions for benchmark, wherein the content of terpinol is 55-65 weight portion, and the content of ethylene glycol ether acetate is 15-25 weight portion, and the content of butyl carbitol is 15-25 weight portion.
Thickener, lubricant and thixotropic agent are dissolved in mixed solvent that above-mentioned organic solvent forms by described organic carrier preparation method, make it fully dissolve and stir, obtain organic carrier at 50-70 DEG C.
Present invention also offers a kind of preparation method of crystal silicon solar energy battery aluminium back surface field electrocondution slurry of the present invention, unorganic glass powder and anti-segmentation crack additive are scattered in organic carrier, then add aluminium powder, namely grinding obtains body silicon solar cell aluminium back surface field electrocondution slurry.
According to preparation method provided by the present invention, preferably, the fineness ￡ 20mm of described electrocondution slurry, the viscosity of described electrocondution slurry is 30000 ~ 35000mPas.Described being ground to is ground with roller mill, and the number of times of described grinding has no particular limits, as long as can make the fineness < 20 μm of aluminum conductive electric slurry, in order to save operation, grinding number of times of the present invention is 5-10 time.
Crystal silicon solar battery back field aluminum conductive size of the present invention, its printing with sintering process is: adopt the silk screen printing of 180-280 object on the shady face of monocrystalline or polysilicon solar cell, bake out temperature is 200-400 DEG C, dry 10-60 second, reenter continuous tunnel furnace sintering, preheat temperature is 200-400 DEG C, and the time is 30-60 second, peak temperature is 940-960 DEG C, and the time is 0.5-1.5 second.
Adopt aluminium back surface field electrocondution slurry of the present invention silk screen printing on the shady face of crystal-silicon solar cell, cross the aluminium film surface after continuous tunnel furnace sintering without segmentation crack, surface aesthetic, smooth, without aluminium blister aluminium pill phenomenon, cell piece angularity, all meet industry requirement with the performance such as adhesive force, photoelectric conversion efficiency of silicon substrate.
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1
1, unorganic glass powder is prepared
36 parts of Bi are taken by mass parts
2o
3, 24 parts of B
2o
3, 9 parts of SiO
2, 10 parts of BaO, 16 parts of Sb
2o
3, 2 parts of Sb
2o
5, 1 part of CaO, 1 part of MgO, 1 part of Al
2o
3.Adopt the method for ball milling mixing, ball milling 0.5h, mixes each oxide powder, proceeds in corundum crucible, and be placed in silicon carbide rod furnace.To be warming up to 550 DEG C in silicon carbide rod furnace, insulation 0.5h, then be warming up to 1200 DEG C, insulation 2h, shrend is filtered and is obtained glass dregs.By glass dregs load ball grinder, in mass ratio zirconia ball: bead: deionized water=4:1:0.7, tank speed 300 revs/min, wet-milling 7.0h, filter post-drying, then the 0.5h that dry grinds, during dry grinding, the mass ratio of zirconia ball and glass dust is 1:2.By above-mentioned steps, obtain unorganic glass powder A1.
2, organic carrier is prepared
In mass ratio by butyl carbitol: terpinol: ethylene glycol ether acetate mixes with 70:20:10, obtain mixed organic solvents.Take the mixed organic solvents of 91 parts, 6 parts of ethyl cellulose STD-20 (it is 20 that Tao Shi produces viscosity), 1 part of modified hydrogenated castor oil and 2 parts of hexadecanols are added in this organic solvent, be heated to 60 DEG C and make abundant dissolving, and stir 4h, obtain the organic carrier B1 of evenly clarification.
3, aluminum conductive electric slurry is prepared
Take the organic carrier B1 of 23 parts, be placed in the stainless cylinder of steel of high speed dispersor, (purity is 95-97wt%, D to add 0.050 part of amorphous boron powder
50< 2.0 μm), then add the unorganic glass powder A1 of 1.0 parts again, stir.Add ball aluminum powder (the median particle diameter D of selected aluminium powder of 75.95 parts more in batches
50be 4.5 μm, the alumina layer thickness of surface coverage is 13-16nm); Every batch of ball aluminum powder adds and first to stir evenly afterwards, then adds next batch, and after all adding, high-speed stirred is even.Carry out grinding 6-8 time with the three-roll grinder of 150 again, be ground to slurry fineness < 20 μm, regulate viscosity to 30000-35000mPas, obtain the aluminum conductive electric slurry S1 of the present embodiment.
Embodiment 2
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry of the present embodiment, difference is: amorphous boron powder changes amorphous state boron oxide powder into (purity is 97.0-99.5wt%, D in step 3
50< 5 μm).Obtain the aluminum conductive electric slurry S2 of the present embodiment.
Embodiment 3
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry of the present embodiment, difference is: amorphous boron powder changes crystalline state boron oxide powder into (purity is 97.0-99.5wt%, D in step 3
50< 8.0 μm).Obtain the aluminum conductive electric slurry S3 of the present embodiment.
Embodiment 4
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry of the present embodiment, difference is: in step 3, amorphous boron powder changes the mixture (mass ratio of boron powder and boron oxide powder is 1:1) of amorphous boron powder and amorphous state boron oxide powder into.Obtain the aluminum conductive electric slurry S4 of the present embodiment.
Embodiment 5
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry of the present embodiment, difference is: in step 3, the quality of amorphous boron powder changes 0.010 part into, changes the quality of ball aluminum powder into 75.99 parts.Obtain the aluminum conductive electric slurry S5 of the present embodiment.
Embodiment 6
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry of the present embodiment, difference is: in step 3, the quality of amorphous boron powder changes 0.100 part into, changes the quality of ball aluminum powder into 75.90 parts.Obtain the aluminum conductive electric slurry S6 of the present embodiment.
Embodiment 7
The step identical with embodiment 1 is adopted to prepare the aluminum conductive electric slurry of the present embodiment, difference is: in step 3, the quality of organic carrier is 25 parts, the quality of amorphous boron powder is 0.100 part, and the quality of unorganic glass powder is 4.90 parts, and the quality of ball aluminum powder is 70 parts.Obtain the aluminum conductive electric slurry S7 of the present embodiment.
Embodiment 8
The step identical with embodiment 1 is adopted to prepare the aluminum conductive electric slurry of the present embodiment, difference is: in step 3, the quality of organic carrier is 18 parts, the quality of amorphous boron powder is 0.020 part, and the quality of unorganic glass powder is 1.98 parts, and the quality of ball aluminum powder is 80 parts.Obtain the aluminum conductive electric slurry S8 of the present embodiment.
Embodiment 9
The step identical with embodiment 1 is adopted to prepare the aluminum conductive electric slurry of the present embodiment, difference is: in step 3, the quality of organic carrier is 20 parts, the quality of amorphous boron powder is 0.060 part, and the quality of unorganic glass powder is 5.0 parts, and the quality of ball aluminum powder is 74.94 parts.Obtain the aluminum conductive electric slurry S9 of the present embodiment.
Embodiment 10
The step identical with embodiment 1 is adopted to prepare the aluminum conductive electric slurry of the present embodiment, difference is: in step 3, the quality of organic carrier is 25 parts, the quality of amorphous boron powder is 0.080 part, and the quality of unorganic glass powder is 0.50 part, and the quality of ball aluminum powder is 74.42 parts.Obtain the aluminum conductive electric slurry S10 of the present embodiment.
Comparative example 1
Adopt the step identical with embodiment 1 to prepare the aluminum conductive electric slurry of the present embodiment, difference is: the amorphous boron powder in removal step 3, changes the quality of ball aluminum powder into 76 parts, obtains aluminum conductive electric slurry D1.
Comparative example 2
The aluminum conductive electric slurry adopting the embodiment 1 in CN103123812A to prepare, is designated as D2.
Embodiment 11-20
Aluminum conductive electric slurry S1-S10 is adopted and is made into solar cell piece in the following method, be denoted as SS1-SS10 respectively.Certain slurry of each test adopts 200 cell pieces, and test data gets its mean value.
The polysilicon chip specification adopted is: 156 × 156mm.Thickness is 180 microns (before corrosion), and before printing, thickness is 160 microns.By silicon wafer wool making, PN junction processed, after plating silicon nitride anti-reflecting film, first adopt 280 order silk screen printing back silver slurries (the PV505 silver slurry of Dupont company), the printing weight in wet base of back of the body silver slurry is 25-40mg, dry, in the remaining shady face part of back of the body silver slurry, adopt 200 order silk screen printing aluminum conductive electric slurry S1-S10, the printing weight in wet base of aluminium paste is 1.30-1.50g, after oven dry, adopt 360 orders, live width is the half tone of 60 microns, the phototropic face of silicon chip prints front side silver paste (the 17F silver slurry of Dupont company), printing weight in wet base is 100-120mg, enter in continuous tunnel furnace and dry sintering, preheat temperature is 200-400 DEG C, peak temperature is 930-950 DEG C, the whole time crossing continuous tunnel furnace is about 2min, peak value sintering time is 1 second, namely finished product solar cell piece is obtained after coming out of the stove.
Comparative example 3-4
D1-D2 is prepared solar cell piece according to the method for embodiment 11-20, is denoted as DD1-DD2 respectively.Certain slurry of each test adopts 200 cell pieces, and test data result gets its mean value.
Performance test
1, segmentation crack, whether the aluminium film surface that detects by an unaided eye has segmentation crack, the results are shown in Table 1.Whether 2, outward appearance: detect by an unaided eye aluminium film surface, have out-of-flatness, wrinkling, blister, the bad outward appearance phenomenon such as beading up, if without bad phenomenon, be designated as OK, otherwise be designated as NG.The results are shown in Table 1.
3, angularity: the warpage degree clearance gauge of cell piece is measured, and it is OK that warpage degree is less than 2.0mm, otherwise is designated as NG.The results are shown in Table 1.
4, adhesive force: photovoltaic glass, EVA, cell piece, EVA and TPT are stacked in order, and carry out lamination, by the long strip that graduating with cutter 1.0cm is wide, evenly delineate 5 in whole aluminium back surface field, adopt universal tensile experimental machine to carry out uniform velocity stripping to every band, setting peeling rate is 50mm/min, write down the maximum peeling force Fmax of every band, get the adhesive force of mean value as this sheet battery aluminium back surface field of 5 bands, if mean F max322.5N, then be designated as OK, otherwise be designated as NG.The results are shown in Table 1.
5, electricity conversion: use solar cell piece special test equipment, as single flash operation simulator is tested.Test condition is standard test condition (STC): light intensity: 1000W/m2; Spectrum: AM1.5; Temperature: 25 DEG C.Method of testing is carried out according to IEC904-1.The results are shown in Table 1.
Table 1
。
As can be seen from Table 1, adopt aluminium back surface field electrocondution slurry of the present invention silk screen printing on the shady face of crystal-silicon solar cell, cross the aluminium film surface after continuous tunnel furnace sintering without segmentation crack, surface aesthetic, smooth, without aluminium blister aluminium pill phenomenon, cell piece angularity, all meet industry requirement with the performance such as adhesive force, photoelectric conversion efficiency of silicon substrate.
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 (10)
1. a crystal silicon solar energy battery aluminium back surface field electrocondution slurry, is characterized in that, described electrocondution slurry comprises aluminium powder, unorganic glass powder, organic carrier and anti-segmentation crack additive; Described anti-segmentation crack additive is boron oxide powder and/or amorphous boron powder.
2. crystal silicon solar energy battery aluminium back surface field electrocondution slurry according to claim 1, it is characterized in that, with the total weight of described electrocondution slurry for benchmark, the content of described aluminium powder is 70-80wt%, the content of described unorganic glass powder is 0.5-5.0wt%, the content of described organic carrier is 18-29wt%, and the content of described anti-segmentation crack additive is 0.010-0.100wt%.
3. crystal silicon solar energy battery aluminium back surface field electrocondution slurry according to claim 1, is characterized in that, the middle particle diameter D of described boron oxide powder
50for: 1.0 microns of <D
50￡ 10 microns.
4. crystal silicon solar energy battery aluminium back surface field electrocondution slurry according to claim 1, is characterized in that, the middle particle diameter D of described amorphous boron powder
50for: 0.1 micron of <D
50￡ 2.0 microns.
5. crystal silicon solar energy battery aluminium back surface field electrocondution slurry according to claim 1, is characterized in that, the purity of described boron oxide powder or amorphous boron powder is 395.0wt%.
6. crystal silicon solar energy battery aluminium back surface field electrocondution slurry according to claim 1, is characterized in that, the softening temperature T of described unorganic glass powder
ffor 500-700 DEG C.
7. crystal silicon solar energy battery aluminium back surface field electrocondution slurry according to claim 1, is characterized in that, described unorganic glass powder consist of Bi
2o
3or ZnO30-50 weight portion, B
2o
310-30 weight portion, Sb
2o
310-20 weight portion, Sb
2o
51.0-5.0 weight portion, SiO
25.0-10 weight portion, BaO 5.0-10 weight portion, CaO 0-5.0 weight portion, MgO 0-5.0 weight portion, Al
2o
30-5.0 weight portion, total amount is 100 mass parts.
8. crystal silicon solar energy battery aluminium back surface field electrocondution slurry according to claim 1, is characterized in that, containing thickener, lubricant, thixotropic agent and organic solvent in described organic carrier; With organic carrier total amount for benchmark, the content of described thickener is 4.0-10wt%, and the content of described lubricant is 0.5-5.0 wt%, and the content of described thixotropic agent is 0.2-2.0 wt%, and the content of described organic solvent is 85-95 wt%.
9. the preparation method of the crystal silicon solar energy battery aluminium back surface field electrocondution slurry described in a claim 1-8 any one, it is characterized in that, unorganic glass powder and anti-segmentation crack additive are scattered in organic carrier, then add aluminium powder, namely grinding obtains crystal silicon solar energy battery aluminium back surface field electrocondution slurry.
10. preparation method according to claim 9, is characterized in that, the fineness ￡ 20mm of described electrocondution slurry, and the viscosity of described electrocondution slurry is 30000-35000mPas.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876067A (en) * | 2015-12-11 | 2017-06-20 | 李文熙 | The manufacture method of high conductivity thick film aluminium cream |
| CN106898410A (en) * | 2017-01-18 | 2017-06-27 | 常州大学 | A kind of method of lifting PERC solar cell aluminium paste performances |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826564A (en) * | 2010-05-11 | 2010-09-08 | 中国乐凯胶片集团公司 | Solar cell back surface field aluminum paste |
| CN102496418A (en) * | 2011-11-29 | 2012-06-13 | 苏州柏特瑞新材料有限公司 | Crystalline silicon solar cell back surface field aluminum alloy slurry and preparation method thereof |
| US20120152344A1 (en) * | 2010-12-16 | 2012-06-21 | E.I. Du Pont De Nemours And Company | Aluminum paste compositions comprising calcium oxide and their use in manufacturing solar cells |
| CN103065701A (en) * | 2012-11-29 | 2013-04-24 | 乐凯胶片股份有限公司 | Aluminum paste for silicon solar cell |
| CN103123812A (en) * | 2013-02-20 | 2013-05-29 | 江苏晨电太阳能光电科技有限公司 | Crystalline silicon solar cell aluminum paste |
| CN103514973A (en) * | 2012-06-25 | 2014-01-15 | 比亚迪股份有限公司 | Conductive slurry used for solar cell and method of preparing the same |
-
2014
- 2014-03-28 CN CN201410123183.6A patent/CN104952512B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826564A (en) * | 2010-05-11 | 2010-09-08 | 中国乐凯胶片集团公司 | Solar cell back surface field aluminum paste |
| US20120152344A1 (en) * | 2010-12-16 | 2012-06-21 | E.I. Du Pont De Nemours And Company | Aluminum paste compositions comprising calcium oxide and their use in manufacturing solar cells |
| CN102496418A (en) * | 2011-11-29 | 2012-06-13 | 苏州柏特瑞新材料有限公司 | Crystalline silicon solar cell back surface field aluminum alloy slurry and preparation method thereof |
| CN103514973A (en) * | 2012-06-25 | 2014-01-15 | 比亚迪股份有限公司 | Conductive slurry used for solar cell and method of preparing the same |
| CN103065701A (en) * | 2012-11-29 | 2013-04-24 | 乐凯胶片股份有限公司 | Aluminum paste for silicon solar cell |
| CN103123812A (en) * | 2013-02-20 | 2013-05-29 | 江苏晨电太阳能光电科技有限公司 | Crystalline silicon solar cell aluminum paste |
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| CN106876067B (en) * | 2015-12-11 | 2019-08-13 | 李文熙 | The manufacturing method of high conductivity thick film aluminium cream |
| CN106898410A (en) * | 2017-01-18 | 2017-06-27 | 常州大学 | A kind of method of lifting PERC solar cell aluminium paste performances |
| CN106898410B (en) * | 2017-01-18 | 2019-03-22 | 常州大学 | A kind of aluminium paste and preparation method thereof promoting PERC solar cell properties |
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