CN103204632B - Conductive glass powder and preparation method thereof, crystal silicon solar energy battery aluminum conductive electric slurry and preparation method - Google Patents
Conductive glass powder and preparation method thereof, crystal silicon solar energy battery aluminum conductive electric slurry and preparation method Download PDFInfo
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- CN103204632B CN103204632B CN201210010560.6A CN201210010560A CN103204632B CN 103204632 B CN103204632 B CN 103204632B CN 201210010560 A CN201210010560 A CN 201210010560A CN 103204632 B CN103204632 B CN 103204632B
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Abstract
The invention provides a kind of conductive glass powder and preparation method thereof, this glass powder comprises the metallic lithium of glass oxide and 10 ~ 40wt% or the halogen compound of silver.The present invention also provides a kind of crystal silicon solar energy battery aluminum conductive electric slurry extremely preparation method comprising this conductive glass powder.Conductive glass powder provided by the invention prepares aluminum conductive electric slurry, the photoelectric transformation efficiency of crystal-silicon solar cell can be improved, the aluminium film square resistance formed is little, packing factor is high, cell piece sinuousness is little, sialic layer is smooth, sticking power is good, and the average photoelectric conversion efficiency of common monocrystalline silicon battery is greater than 18.20%.
Description
Technical field
The invention belongs to crystal silicon solar energy battery technical field, particularly relate to a kind of conductive glass powder and preparation method thereof, a kind of crystal silicon solar energy battery aluminum conductive electric slurry and preparation method thereof.
Background technology
Aluminum conductive electric slurry belongs to one of electronic information material, is also the main subsidiary material making crystal silicon solar energy battery simultaneously, in this battery material cost, occupies suitable proportion.Silicon solar cell is a kind of inexhaustible environmental protection renewable energy source, and current international research is very active.The one-tenth of aluminium paste is grouped into, make, print and sintering process all has very large impact to the performance of solar cell.At present, international major company and some institutes of China and the matured product of slurry manufacturing factory, as long as formula composition is suitable, sintering process is correct, aluminium film can meet industry requirement well to the sticking power of matrix and surface appearance after sintering, and also not leadedly in slurry waits heavy metal, meets environmental requirement, but along with the technical development of industry, the electricity conversion of silicon solar cell is also more and more higher.Under fundamental property how after ensureing sintering meets the condition of industry requirement, the photoelectric transformation efficiency improving crystal silicon solar energy battery in aluminium paste as much as possible, becomes the key problem of such slurry research.
Glass powder in existing crystal silicon solar energy battery aluminum conductive electric slurry is generally Bi
2o
3-B
2o
3-SiO
2system, wherein, B
2o
3and SiO
2for glass network former, form the skeleton structure of network, and Bi
2o
3the skeleton structure of network can be destroyed, cause " node " of silica framework collapse, this category node is the place that aluminum-oxygen tetrahedron repairs silica skeleton, the interstitial content of unit mass is more, then it is also stronger to the effect of the aluminum oxide on ball aluminum powder surface, under high temperature sintering, the alumina layer on glass powder corrode ball aluminum powder surface, molten aluminum simple substance diffuses in silicon wafer layer and forms aluminium back surface field.Therefore, the effect of glass powder in crystal silicon solar energy battery aluminum conductive electric slurry mainly contains two, and one is play bonding and effect that is that flux, and another effect is the aluminum oxide that corrode falls aluminium powder surface, and impels pure aluminum to spread in silicon layer.But, the glass powder of prior art is generally nonconducting, and under high temperature sintering state, glass powder disperse is between pure aluminum, the contact resistance between aluminium film and between sialic layer can be increased to a certain extent, therefore can reduce the photoelectric transformation efficiency of crystal silicon solar energy battery.
Summary of the invention
The present invention solves the technical problem that existing crystal silicon solar battery back field contact resistance is comparatively large, cell photoelectric efficiency of conversion is not high, provides a kind of conductive glass powder, crystal silicon solar energy battery aluminum conductive electric slurry containing this conductive glass powder and preparation method thereof.
The invention provides a kind of conductive glass powder, comprise the halogen compound of glass oxide and metallic lithium or silver; With the total mass of conductive glass powder for benchmark, wherein, the content of the halogen compound of metallic lithium or silver is 10 ~ 40wt%.
The invention provides a kind of preparation method of conductive glass powder, comprise and the halogen compound powder of metallic lithium or silver and glass oxide being mixed in proportion, intensification melting, shrend obtain granulated glass sphere after filtering, and obtain glass powder after granulated glass sphere ball milling.
Crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention, with the total mass of aluminum conductive electric slurry for benchmark, the ball aluminum powder containing 70-80wt%, the organic carrier of 10-30wt% and the conductive glass powder of 1-10wt%; Wherein, conductive glass powder also provides a kind of preparation method of aluminum conductive electric slurry for conductive glass powder the present invention provided by the present invention, comprises and ball aluminum powder and conductive glass powder being scattered in proportion in organic carrier, namely obtain described aluminum conductive electric slurry after grinding; Wherein conductive glass powder conductive glass powder provided by the present invention.
The present inventor surprisingly finds, at unleaded Bi
2o
3-B
2o
3-SiO
2after adding the halogen compound powder of metallic lithium or silver in glass powder system, the crystal silicon solar battery back field contact resistance obtained with the crystal silicon solar energy battery aluminum conductive electric slurry containing this conductive glass powder is less, and electricity conversion is higher.Infer that its reason is: the B in conductive glass powder
2o
3, SiO
2form the skeleton structure of network; In the metallic lithium added or the halogen compound of silver, halogen family ion to be fixed between network and to connect with covalent linkage, and metal ion at inter-subnetwork migration, thus can play the effect of conducting carriers; And with the mass percentage of conductive glass powder for benchmark, when the metallic lithium added or the halogen compound of silver are 10 ~ 40wt%, the halogen compound of metallic lithium or silver and other oxide compounds can be made to form glass preferably when shrend, and make glass powder have good conductivity, also can reduce the contact resistance of sialic layer; Meanwhile, also can not affect the corrode effect of glass powder to aluminium powder surface alumina oxide thin layer, also can play good fluxing action to aluminium powder.The performance of the aluminium back surface field adopting conductive glass powder of the present invention to be formed is better, and obtained cell photoelectric efficiency of conversion is higher.
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 conductive glass powder, comprise the halogen compound of glass oxide and metallic lithium or silver; With the total mass of conductive glass powder for benchmark, wherein, the content of the halogen compound of metallic lithium or silver is 10 ~ 40wt%.
In conductive glass powder provided by the invention, with the total mass of conductive glass powder for benchmark, preferably, the content of the halogen compound of metallic lithium or silver is 20 ~ 30wt%; While making conductive glass powder have more good conductivity, do not affect the fluxing action of conductive glass powder to aluminium powder yet, thus the sialic layer that forming property is more good.
In conductive glass powder provided by the invention, preferably, the halogen compound of metallic lithium or silver is AgI and LiCl.More preferred, the halogen compound of metallic lithium or silver is AgI.When the halogen compound of metallic lithium or silver is AgI and LiCl, the specific conductivity of obtained glass powder is usually higher, and when especially compound is AgI, the glass powder specific conductivity obtained is the highest, and obtained solar cell back surface field contact resistance is less, and photoelectric transformation efficiency is higher.
In conductive glass powder provided by the invention, preferably, conductive glass powder specific conductivity is at room temperature 2.0 ~ 50 × 10
-4s/cm; Preferred further, conductive glass powder specific conductivity is at room temperature 15 ~ 40 × 10
-4s/cm; Preferably, the middle particle diameter D of conductive glass powder
50it is 0.2 ~ 3.0 μm; The melting point onset of conductive glass powder is in 550 ~ 650 DEG C.
In conductive glass powder provided by the invention, described glass oxide can be the glass powder oxide compound of various conventional glass powder system, as Bi
2o
3-B
2o
3-SiO
2glass frit oxide compound or PbO-SiO
2-B
2o
3glass frit oxide compound, is preferably Bi
2o
3-B
2o
3-SiO
2glass frit oxide compound.
In conductive glass powder provided by the invention, with the total mass of conductive glass powder for benchmark, preferably, glass oxide comprises the Bi of 20 ~ 50wt%
2o
3, 5 ~ 30wt% B
2o
3, 2 ~ 15wt% SiO
2, the CaO of 1.0 ~ 5.0wt%, the MgO of 0.5 ~ 5.0wt%, the Al of 0 ~ 5.0wt%
2o
3with the BaO of 0 ~ 3.0wt%.Wherein, MgO and CaO belongs to network outer body, both can play certain destruction to glass network, but when temperature reduces, then can play congregation, such component, when addition is little, can reduce the beginning fusing point of glass a little, at high temperature can reduce viscosity, increase mobility and the wetting property of melten glass; And Al
2o
3with the selectable components of BaO as preferred version in conductive glass powder of the present invention, can adjust the structure of glass network, the beginning fusing point of glass powder can also be regulated simultaneously, glass powder powder fusing point is made to be between 550 ~ 650 DEG C, at the glass powder in this beginning fusing point interval, when sintering peak temperature is 880 ~ 950 DEG C, when the time is 0.5-1.5 second, there is best bonding and effect of fluxing to the aluminium powder in slurry; Therefore, the performance of the aluminium back surface field adopting this conductive glass powder to be formed can be better, and obtained cell photoelectric efficiency of conversion can be higher.
The invention provides a kind of preparation method of conductive glass powder, comprise and the halogen compound powder of metallic lithium or silver and glass oxide being mixed in proportion, intensification melting, shrend obtain granulated glass sphere after filtering, and obtain glass powder after granulated glass sphere ball milling.
The invention provides is the preparation method of conductive glass powder, specifically comprises the halogen compound powder of metallic lithium or silver and Bi
2o
3, B
2o
3, SiO
2mix by a certain percentage Deng oxide powder, load in porcelain crucible, put into silicon carbide rod furnace, intensification is preheating to 500 ~ 600 DEG C of insulation 0.2-0.8h, rise to 1200 ~ 1300 DEG C again, melting 0.5 ~ 2h, shrend is filtered, and the granulated glass sphere obtained loads ball grinder, Mass Control ratio, the mass ratio of zirconia ball, granulated glass sphere and deionized water is 4:0.8-1.2:0.5-0.8, tank speed 250 ~ 350 revs/min, and Ball-milling Time is 5-8h, filter, dry, then 0. 2-1.0h that dry grinds, during dry grinding, the mass ratio of zirconia ball and granulated glass sphere is 1:1.8-2.5.
The invention provides a kind of crystal silicon solar energy battery aluminum conductive electric slurry, with the total mass of described crystal silicon solar energy battery aluminum conductive electric slurry for benchmark, ball aluminum powder containing 70-80wt% in described crystal silicon solar energy battery aluminum conductive electric slurry, the organic carrier of 10-30wt% and the conductive glass powder of 1-10wt%; Wherein, conductive glass powder is conductive glass powder provided by the invention.
In the present invention, ball aluminum powder directly can adopt various atomizing aluminium powders conventional in prior art.Under preferable case, the median particle diameter of ball aluminum powder is 0.5-8.0 μm.In the present invention, ball aluminum powder is nucleocapsid structure, and kernel is aluminium simple substance, and shell is aluminum oxide.Under preferable case, the thickness of the surface alumina oxide of ball aluminum powder is 5-20nm.
In crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention, organic carrier is organic system conventional in the aluminum conductive electric slurry of prior art, specifically comprises thickening material, auxiliary agent and organic solvent.Wherein, described thickening material is selected from least one of ethyl cellulose, modified phenolic resins or epoxy resin.Described organic solvent is selected from Terpineol 350, dibutyl phthalate, diethylene glycol monobutyl ether, turps, butyl glycol ether, diethylene glycol monobutyl ether acetic ester, ethylene glycol ether acetate, tributyl citrate, at least two kinds in butyl carbitol acetate, dibutyl phthalate, tributyl phosphate.Described auxiliary agent is selected from least one in lubricant, thixotropic agent.Under preferable case, described lubricant is hexadecanol or stearyl alcohol, and described thixotropic agent is modified hydrogenated Viscotrol C or polyamide wax powder.
In described organic carrier, the content of each component is in the usual range of this area, and the present invention does not have special stipulation.Such as, with the total mass of organic carrier for benchmark, wherein the content of thickening material is 3-15wt%, and the content of auxiliary agent is 0.2-15wt%, and the content of organic solvent is 70-95wt%.
As a kind of preferred implementation of the present invention, described organic solvent is the mixture of Terpineol 350, ethylene glycol ether acetate and diethylene glycol monobutyl ether.More preferably in situation, with the total mass of organic solvent for benchmark, wherein the content of Terpineol 350 is 55-65 wt%, and the content of ethylene glycol ether acetate is 15-25 wt%, and the content of diethylene glycol monobutyl ether is 15-25 wt%.
Finally, the invention provides the preparation method of described crystal silicon solar energy battery aluminum conductive electric slurry, comprise and ball aluminum powder and conductive glass powder are scattered in organic carrier in proportion, after grinding, namely obtain described crystal silicon solar energy battery aluminum conductive electric slurry; Wherein, described conductive glass powder is conductive glass powder provided by the invention.
By the mode that ball aluminum powder, conductive glass powder are scattered in organic carrier be: directly ball aluminum powder, conductive glass powder are added in organic carrier, stir; Or, first conductive glass powder is added in organic carrier, stirs, then adding ball aluminum powder in batches, often criticizing ball aluminum powder and add and first to stir afterwards, then add next batch ball aluminum powder, after all adding, high-speed stirring makes each component in slurry system dispersed.
In the present invention, in order to make slickness, the planeness on formed aluminium back surface field surface better, can grind slurry system, being ground to described crystal silicon solar energy battery aluminum conductive electric slurry fineness and being less than 20 μm.The three-roll grinder of 150 can be adopted to carry out, and grinding number of times is preferably 15-20 time.
The preparation method of crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention, specifically comprises the following steps:
(1) by the halogen compound powder of metallic lithium or silver and Bi
2o
3, B
2o
3, SiO
2mix by a certain percentage Deng oxide powder, load in porcelain crucible, put into silicon carbide rod furnace, intensification is preheating to 500 ~ 600 DEG C of insulation 0.2-0.8h, rise to 1200 ~ 1300 DEG C again, melting 0.5 ~ 2h, shrend is filtered, and the granulated glass sphere obtained loads ball grinder, Mass Control ratio, the mass ratio of zirconia ball, granulated glass sphere and deionized water is 4:0.8-1.2:0.5-0.8, tank speed 250 ~ 350 revs/min, and Ball-milling Time is 5-8h, filter, dry, then the 0.2-1.0h that dry grinds, during dry grinding, the mass ratio of zirconia ball and granulated glass sphere is 1:1.8-2.5.Obtain middle particle diameter D
50be in the conductive glass powder of 0.2 ~ 3.0 μm, test its normal temperature electric conductivity 2.0 ~ 50 × 10
-4s/cm.
(2) ethyl cellulose, lubricant, thixotropic agent are dissolved in the mixed solvent be made up of Terpineol 350 or other organic solvents, make it fully dissolve and stir at 50 ~ 80 times, obtain transparent homogeneous organic carrier.
(3) organic carrier of gained is placed in the stainless cylinder of steel of high speed dispersor, stirs, while add the obtained glass powder of step one, stir evenly; Add ball-type aluminium powder several times, add at every turn and first stir evenly, then add next time; After all adding, stir evenly at a high speed; Carry out grinding 15 ~ 20 times with the three-roll grinder of 150 again, mesh-of-grind to < 20 μm, aluminum conductive electric slurry finished product.
The cell piece sinuousness adopting crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention obtained is little, and sialic layer is smooth, sticking power is good, has higher electricity conversion simultaneously.
Below by embodiment, the present invention is further illustrated.
Embodiment 1
Step one: the preparation of conductive glass powder
Get the AgI of 35wt%, the Bi of 30wt%
2o
3, the B of 20wt%
2o
3, 10wt% SiO
2, the MgO of the CaO of 3.5wt%, 1.5wt%, employing V-Mixer mixes, load in porcelain crucible, put into silicon carbide rod furnace, heat up and be preheating to 550 DEG C, insulation 0.5h, rise to 1250 DEG C again, melting 1.0h, shrend is filtered, granulated glass sphere will be obtained and load ball grinder, Mass Control ratio, zirconia ball: granulated glass sphere: deionized water=4:1:0.8, tank speed 300 revs/min, ball milling 6 hours, filter, dry, then the 0.2-1.0h that dry grinds, during dry grinding, the mass ratio of zirconia ball and granulated glass sphere is 1:2, obtains middle particle diameter D
50be the conductive glass powder of 1.5 μm, for subsequent use.
Step 2: the configuration of organic carrier
According to quality than diethylene glycol monobutyl ether: Terpineol 350: the organic solvent of diethylene glycol monobutyl ether acetic ester=75:15:10 mixes, the mixed solvent of composition slurry.With carrier total amount for benchmark, get the mixed solvent of 90wt%, add 8.0wt% ethyl cellulose STD-4 (it is 4 that Tao Shi produces viscosity), the hydrogenated castor oil of 1.5wt%, 0.5wt% stearyl alcohol, is heated to 60 DEG C, makes it fully dissolve, and stir, obtain the organic carrier solution of homogeneous clarification.
Step 3: the preparation of electrocondution slurry
Get the organic carrier solution obtained by step 2 accounting for slurry total amount 24 wt%, be placed in the stainless cylinder of steel of high speed dispersor, stir, while add glass powder obtained in the previous step one accounting for total amount 2.0wt%, stir.Add middle particle diameter D again
50be the ball aluminum powder that the surface coverage of 4.5 μm has aluminum oxide, the addition of aluminium powder is the 74wt% of total amount, and wherein aluminium powder adds several times, adds at every turn and first stirs evenly, then adds next time; After all adding, stir evenly at a high speed; Carry out grinding 15 ~ 20 times with the three-roll grinder of 150 again, mesh-of-grind, to < 20 μm, can obtain crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 2
Make the AgI of 35wt% in step one in embodiment 1 LiCl of 30wt% into, Bi
2o
3amount make 35wt% into by 30wt%, obtained conductive glass powder, all the other are identical with embodiment 1, obtain crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 3
Make the AgI in step one in embodiment 1 into AgBr, obtained conductive glass powder, all the other are identical with embodiment 1, obtained crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 4
Change the amount of the AgI in step one in embodiment 1 into 10wt%, Bi
2o
3amount change 40wt% into, B
2o
3change 30wt% into, SiO
2amount change 15wt% into, obtained conductive glass powder, all the other are identical with embodiment 1, obtain crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 5
Change the amount of the AgI in step one in embodiment 1 into 40wt%, Bi
2o
3amount change 20wt% into, B
2o
3change 25 wt% into, obtained conductive glass powder, all the other are identical with embodiment 1, obtained crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 6
The amount of the AgI in step one in embodiment 1 is changed 25wt%, Bi
2o
3amount change 35wt% into, B
2o
3change 25wt% into, obtained conductive glass powder, all the other are identical with embodiment 1, obtained crystal silicon solar energy battery aluminum conductive electric slurry.
Comparative example
AgI in step one in embodiment 1 is removed, Bi
2o
3amount change 58wt% into, B
2o
3change 22wt% into, SiO
2amount change 15wt% into, obtained glass powder, all the other are identical with embodiment 1, obtain crystal silicon solar energy battery aluminum conductive electric slurry.
By technique below, the crystal silicon solar energy battery aluminum conductive electric slurry that embodiment 1-6 and comparative example make is made into solar cell.
The slurry of above-mentioned gained is adopted 280 order web plate silk screen printings on the monosilicon, monocrystalline silicon piece specification: 125 × 125mm, before corrosion, thickness is 200 μm, and before printing, thickness is 180 μm.Printing weight is about 1.20 grams, every sheet slurry, and bake out temperature is 150 DEG C, and drying time is 4 minutes, and reenter continuous tunnel furnace sintering, preheating temperature is 350 ~ 500 DEG C, and the time is 55 seconds, and peak temperature is 915 DEG C, and the time is about 1 second.Burning till thickness is 25 ± 5 μm, obtains the solar battery sheet being printed with slurry of the present invention after coming out of the stove.
performance test
1, glass powder specific conductivity: adopt FM100GH powder resistivity detecting instrument (Shanghai Yao produce along electronics technology), planning standard fixture (TS100F fixture), in room temperature (25 DEG C) test powders resistivity, then be converted into specific conductivity, unit is × 10
-4s/cm.
2, aluminium film surface situation: with examination by sensory organs aluminium film surface situation, whether smooth, with or without aluminium pill.
3, aluminium film sticking power: under room temperature condition, soaks 7 days with tap water, and aluminium film does not come off or gently scrapes with blunt and do not come off.
4, electricity conversion: with the test of solar battery sheet electricity conversion special test equipment.
5, battery square resistance: the method adopting GB/T17473.3-1998 to specify is carried out, and be the digital display multitester measuring of 0.001 Ω by resolving power, unit is m Ω/.
The slurry silk screen printing that embodiment 1-6 and comparative example are obtained also, after sintering, is obtained cell piece and carries out above-mentioned test, the average test result of 200 cell pieces corresponding to embodiment 1-6 and comparative example listed in table 1 respectively.
Table 1
| Numbering | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example |
| Glass powder specific conductivity (× 10 -4 S/cm） | 28 | 21 | 19 | 2.0 | 39 | 32 | 0.1 |
| Battery square resistance (m Ω/) | 17.43 | 15.34 | 18.70 | 26.21 | 12.52 | 10.13 | 35.78 |
| Electricity conversion (%) | 18.36 | 18.28 | 18.25 | 18.20 | 18.33 | 18.42 | 18.05 |
The result of embodiment and comparative example as can be seen from table 1, in the present invention, the composition etc. of the composition of glass powder and specific conductivity, organic carrier all has impact to the outward appearance after the sintering of slurry and performance.Especially the specific conductivity of glass powder has a strong impact on the square resistance of battery, the specific conductivity being prepared glass powder by the present invention is high, simultaneously, the aluminium film surface situation of test battery sheet and sticking power can find, cell piece aluminium film surface situation in embodiment 1-6 is smooth surface, and not beading up, does not blister, and sticking power is good, aluminium film does not come off.Namely the aluminum conductive electric slurry being added with this glass powder can improve the photoelectric transformation efficiency of battery greatly, and the aluminium film square resistance of formation is little, and aluminium film surface is smooth, and sticking power is good, and the average photoelectric conversion efficiency of common monocrystaline silicon solar cell is greater than 18.20%.
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 (13)
1. a conductive glass powder, is characterized in that, comprises the halogen compound of glass oxide and metallic lithium or silver; With the total mass of conductive glass powder for benchmark, the halogen compound content of described metallic lithium or silver is 10 ~ 40wt%; Described glass oxide is Bi
2o
3-B
2o
3-SiO
2glass frit oxide compound.
2. conductive glass powder as claimed in claim 1, it is characterized in that, with the total mass of conductive glass powder for benchmark, the content of the halogen compound of described metallic lithium or silver is 20 ~ 30wt%.
3. conductive glass powder as claimed in claim 1, it is characterized in that, the halogen compound of described metallic lithium or silver is AgI.
4. conductive glass powder as claimed in claim 1, it is characterized in that, described conductive glass powder specific conductivity is at room temperature 2.0 ~ 50 × 10
-4s/cm.
5. conductive glass powder as claimed in claim 1, it is characterized in that, described conductive glass powder specific conductivity is at room temperature 15 ~ 40 × 10
-4s/cm.
6. conductive glass powder as claimed in claim 1, is characterized in that, the middle particle diameter D of described conductive glass powder
50it is 0.2 ~ 3.0 μm.
7. conductive glass powder as claimed in claim 1, it is characterized in that, the melting point onset of described conductive glass powder is in 550 ~ 650 DEG C.
8. conductive glass powder as claimed in claim 1, it is characterized in that, with the total mass of conductive glass powder for benchmark, described glass oxide comprises the Bi of 20 ~ 50wt%
2o
3, 5 ~ 30wt% B
2o
3, 2 ~ 15wt% SiO
2, the CaO of 1.0 ~ 5.0wt%, the MgO of 0.5 ~ 5.0wt%, the Al of 0 ~ 5.0wt%
2o
3with the BaO of 0 ~ 3.0wt%.
9. as the preparation method of conductive glass powder as described in any one in claim 1-8, it is characterized in that, the halogen compound powder of metallic lithium or silver and glass oxide are mixed in proportion, intensification melting, shrend obtain granulated glass sphere after filtering, and obtain glass powder after granulated glass sphere ball milling.
10. a crystal silicon solar energy battery aluminum conductive electric slurry, it is characterized in that, with the total mass of described crystal silicon solar energy battery aluminum conductive electric slurry for benchmark, ball aluminum powder containing 70-80wt% in described crystal silicon solar energy battery aluminum conductive electric slurry, the organic carrier of 10-30wt% and the conductive glass powder of 1-10wt%; Wherein, described conductive glass powder is the conductive glass powder in claim 1-8 described in any one.
11. crystal silicon solar energy battery aluminum conductive electric slurries according to claim 10, it is characterized in that, described ball aluminum powder is atomizing aluminium powder, and the median particle diameter of described ball aluminum powder are 0.5-8.0 μm.
12. crystal silicon solar energy battery aluminum conductive electric slurries according to claim 10, it is characterized in that, described ball aluminum powder is nucleocapsid structure, kernel is aluminium simple substance, and shell is aluminum oxide; The thickness of described aluminum oxide is 5-20nm.
The preparation method of 13. 1 kinds of crystal silicon solar energy battery aluminum conductive electric slurries, is characterized in that, comprises and ball aluminum powder and conductive glass powder being scattered in proportion in organic carrier, namely obtains described crystal silicon solar energy battery aluminum conductive electric slurry after grinding; Wherein, described conductive glass powder is the conductive glass powder in claim 1-8 described in any one.
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| CN103762249B (en) * | 2013-10-16 | 2016-03-02 | 杭州正银电子材料有限公司 | Crystal silicon solar batteries back surface field passivation aluminum conductive electric slurry and preparation method |
| CN103739203B (en) * | 2013-12-17 | 2017-02-08 | 佛山市粤峤陶瓷技术创新服务中心 | Method for manufacturing conductive glass mosaics |
| CN113013402A (en) * | 2021-02-07 | 2021-06-22 | 海南大学 | Glass positive electrode material, preparation method and application thereof |
| CN114409248B (en) * | 2022-01-06 | 2023-04-07 | 江苏日御光伏新材料科技有限公司 | Low-heat-loss tellurium-lithium-silicon-zirconium system glass material, and conductive paste and application thereof |
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| JP2005347276A (en) * | 2005-06-22 | 2005-12-15 | Sharp Corp | Electric conductive paste, electrode, solar cell, and method for manufacturing solar cell |
| CN101809678A (en) * | 2007-10-18 | 2010-08-18 | E.I.内穆尔杜邦公司 | Conductive compositions and processes for use in the manufacture of semiconductor devices |
| CN102047346A (en) * | 2008-05-28 | 2011-05-04 | E.I.内穆尔杜邦公司 | Methods using compositions containing submicron particles used in conductors for photovoltaic cells |
| CN101901844A (en) * | 2009-05-27 | 2010-12-01 | 比亚迪股份有限公司 | Solar cell conductive slurry and preparation method thereof |
| CN102142467A (en) * | 2010-01-29 | 2011-08-03 | 比亚迪股份有限公司 | Solar cell back electric field aluminium paste and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 太阳能电池浆料用微细铝银粉、铝粉研究;谢明 等;《贵金属》;20070815;第28卷(第S1期);全文 * |
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| CN103204632A (en) | 2013-07-17 |
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