CN103204632A - Conductive glass powder and its preparation method, crystalline silicon solar battery aluminum conductive paste and preparation method - Google Patents
Conductive glass powder and its preparation method, crystalline silicon solar battery aluminum conductive paste and preparation method Download PDFInfo
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- CN103204632A CN103204632A CN2012100105606A CN201210010560A CN103204632A CN 103204632 A CN103204632 A CN 103204632A CN 2012100105606 A CN2012100105606 A CN 2012100105606A CN 201210010560 A CN201210010560 A CN 201210010560A CN 103204632 A CN103204632 A CN 103204632A
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Abstract
The invention provides a conductive glass powder and its preparation method. The glass powder comprises a glass oxide and 10-40wt% of a halogen compound of metal lithium or silver. The invention also provides a crystalline silicon solar battery aluminum conductive paste containing the conductive glass powder and a preparation method thereof. The aluminum conductive paste prepared from the conductive glass powder provided by the invention can improve the photoelectric conversion efficiency of a crystalline silicon solar battery. The formed aluminum film has small square resistance and high fill factor, the battery piece has small bending, the silicon-aluminum layer is smooth and has good adhesion, and the average photoelectric conversion efficiency of an ordinary monocrystalline silicon battery is greater than 18.20%.
Description
Technical field
The invention belongs to the crystal silicon solar energy battery technical field, relate in particular 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, also is simultaneously the main subsidiary material of making crystal silicon solar energy battery, occupies suitable proportion in this battery material cost.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, makes, printing and sintering process all have very big influence to Solar cell performance.At present, international major company and some institutes of China and the matured product of slurry manufacturing factory, as long as it is suitable that prescription is formed, sintering process is correct, aluminium film sticking power and surface appearance to matrix behind sintering can both satisfy industry requirement well, and also heavy metal such as not leaded in the slurry, compliance with environmental protection requirements, but along with the technical development of industry, the electricity conversion of silicon solar cell is also more and more higher.How guaranteeing that the fundamental property behind the sintering satisfies under the condition of industry requirement, the photoelectric transformation efficiency that improves crystal silicon solar energy battery aspect aluminium paste as much as possible becomes the key problem that such slurry is studied.
Glass powder in the 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
2Be glass network former, form the skeleton structure of network, and Bi
2O
3Can destroy the skeleton structure of network, cause " node " of the fracture of silica skeleton, this category node is the place that aluminum-oxygen tetrahedron is repaired the silica skeleton, the interstitial content of unit mass is more many, then its effect to the aluminum oxide on ball aluminum powder surface is also just more strong, under the high temperature sintering, the alumina layer on glass powder corrode ball aluminum powder surface, molten aluminum simple substance diffuse into and form aluminium back of the body field in the silicon wafer layer.Therefore, the effect of glass powder in the crystal silicon solar energy battery aluminum conductive electric slurry mainly contains two, and the one, to play bonding and effect that flux, another effect is the aluminum oxide that corrode is fallen the aluminium powder surface, and impels pure aluminum to spread in silicon layer.But, the glass powder of prior art generally is nonconducting, and under the high temperature sintering state, the glass powder disperse is between pure aluminum, can increase between the aluminium film to a certain extent and the contact resistance between the sialic layer, therefore can reduce the photoelectric transformation efficiency of crystal silicon solar energy battery.
Summary of the invention
The present invention provides a kind of conductive glass powder for solving the technical problem that existing crystal silicon solar battery back field contact resistance is big, the cell photoelectric efficiency of conversion is not high, contains crystal silicon solar energy battery aluminum conductive electric slurry of this conductive glass powder and preparation method thereof.
The invention provides a kind of conductive glass powder, comprise the halogen compound of glass oxide compound and metallic lithium or silver; Total mass with conductive glass powder is benchmark, and 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 that halogen compound powder and the glass oxide compound with metallic lithium or silver mixes in proportion, intensification melting, shrend obtain granulated glass sphere after filtering, and obtain glass powder behind the granulated glass sphere ball milling.
Crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention is benchmark with the total mass of aluminum conductive electric slurry, contains the ball aluminum powder of 70-80wt%, the organic carrier of 10-30wt% and the conductive glass powder of 1-10wt%; Wherein, conductive glass powder comprises ball aluminum powder and conductive glass powder are scattered in the organic carrier in proportion for conductive glass powder the present invention provided by the present invention also provides a kind of preparation method of aluminum conductive electric slurry, namely obtains described aluminum conductive electric slurry after the grinding; Conductive glass powder conductive glass powder provided by the present invention wherein.
The present inventor is unexpected to be found, at unleaded Bi
2O
3-B
2O
3-SiO
2After adding the halogen compound powder of metallic lithium or silver in the glass powder system, the crystal silicon solar battery back field contact resistance that makes with the crystal silicon solar energy battery aluminum conductive electric slurry that contains this conductive glass powder is littler, and electricity conversion is higher.Infer its former because: the B in the conductive glass powder
2O
3, SiO
2Form the skeleton structure of network; The halogen family ion is fixed between network and with covalent linkage and connects in the halogen compound of the metallic lithium that adds or silver, and metal ion can move between network, thereby plays the effect of conduction current carrier; And be benchmark with the quality percentage composition of conductive glass powder, when the halogen compound of the metallic lithium that adds or silver is 10 ~ 40wt%, can make halogen compound and other oxide compounds of metallic lithium or silver under the situation of shrend, form glass preferably, and make glass powder have excellent conducting performance, also can reduce the contact resistance of sialic layer; Simultaneously, can not influence glass powder to the corrode effect of aluminium powder surface alumina oxide thin layer yet, can play good fluxing action to aluminium powder yet.It is better that the aluminium that adopts conductive glass powder of the present invention to form is carried on the back the performance of field, and the cell photoelectric efficiency of conversion that makes is higher.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The invention provides a kind of conductive glass powder, comprise the halogen compound of glass oxide compound and metallic lithium or silver; Total mass with conductive glass powder is benchmark, and wherein, the content of the halogen compound of metallic lithium or silver is 10 ~ 40wt%.
In the conductive glass powder provided by the invention, be benchmark with the total mass of conductive glass powder, preferred, the content of the halogen compound of metallic lithium or silver is 20 ~ 30wt%; When making conductive glass powder have more excellent conducting performance, do not influence conductive glass powder to the fluxing action of aluminium powder yet, thereby form the more good sialic layer of performance.
In the conductive glass powder provided by the invention, preferred, 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 was AgI and LiCl, the specific conductivity of the glass powder that makes was higher usually, and when especially compound was AgI, the glass powder specific conductivity that obtains was the highest, and the solar cell back surface field contact resistance that makes is littler, and photoelectric transformation efficiency is higher.
In the conductive glass powder provided by the invention, preferred, conductive glass powder specific conductivity at room temperature is 2.0 ~ 50 * 10
-4S/cm; Further preferred, conductive glass powder specific conductivity at room temperature is 15 ~ 40 * 10
-4S/cm; Preferably, the middle particle diameter D of conductive glass powder
50Be 0.2 ~ 3.0 μ m; The initial fusing point of conductive glass powder is in 550 ~ 650 ℃.
In the conductive glass powder provided by the invention, described glass oxide compound can be the glass powder oxide compound of various glass powder systems commonly used, as Bi
2O
3-B
2O
3-SiO
2Glass frit oxide compound or PbO-SiO
2-B
2O
3The glass frit oxide compound is preferably Bi
2O
3-B
2O
3-SiO
2The glass frit oxide compound.
In the conductive glass powder provided by the invention, be benchmark with the total mass of conductive glass powder, preferred, the glass oxide compound comprises the Bi of 20 ~ 50wt%
2O
3, 5 ~ 30wt% B
2O
3, 2 ~ 15wt% SiO
2, 1.0 ~ 5.0wt% MgO, the Al of 0 ~ 5.0wt% of CaO, 0.5 ~ 5.0wt%
2O
3BaO with 0 ~ 3.0wt%.Wherein, MgO and CaO belong to network outer body, both can play certain destruction to glass network, but when temperature reduces, then can play congregation, such component can reduce the beginning fusing point of glass a little when addition is little, at high temperature can reduce viscosity, increase flowability and the wetting property of melten glass; And Al
2O
3With the selectable components of BaO as preferred version in the conductive glass powder of the present invention, can adjust the structure of glass network, can also regulate simultaneously the beginning fusing point of glass powder, glass powder powder fusing point is between 550 ~ 650 ℃, glass powder in this beginning fusing point interval, when the sintering peak temperature is 880 ~ 950 ℃, the time is 0.5-1.5 during second, and the aluminium powder in the slurry is had the best bonding and effect of fluxing; Therefore, it is better that the aluminium that adopts this conductive glass powder to form is carried on the back the performance meeting of field, and the cell photoelectric efficiency of conversion that makes can be higher.
The invention provides a kind of preparation method of conductive glass powder, comprise that halogen compound powder and the glass oxide compound with metallic lithium or silver mixes in proportion, intensification melting, shrend obtain granulated glass sphere after filtering, and obtain glass powder behind the granulated glass sphere ball milling.
The invention provides is the preparation method of conductive glass powder, specifically comprises halogen compound powder and Bi with metallic lithium or silver
2O
3, B
2O
3, SiO
2Mix by a certain percentage Deng oxide powder, pack in the porcelain crucible, put into silicon carbide rod furnace, intensification is preheating to 500 ~ 600 ℃ of insulation 0.2-0.8h, rise to 1200 ~ 1300 ℃ again, melting 0.5 ~ 2h, shrend is filtered, the granulated glass sphere that the obtains ball grinder of packing into, the control mass ratio, the mass ratio of zirconia ball, granulated glass sphere and deionized water is 4:0.8-1.2:0.5-0.8,250 ~ 350 rev/mins of jar speed, and the ball milling time is 5-8h, filter, oven dry, 0. 2-1.0h that dry grinds again, the mass ratio of zirconia ball and granulated glass sphere is 1:1.8-2.5 during dry grinding.
The invention provides a kind of crystal silicon solar energy battery aluminum conductive electric slurry, total mass with described crystal silicon solar energy battery aluminum conductive electric slurry is benchmark, the ball aluminum powder that contains 70-80wt% in the 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.
Among the present invention, ball aluminum powder can directly adopt various atomizing aluminium powders commonly used in the prior art.Under the preferable case, the median particle diameter of ball aluminum powder is 0.5-8.0 μ m.Among the present invention, ball aluminum powder is nucleocapsid structure, and kernel is aluminium simple substance, and shell is aluminum oxide.Under the preferable case, the thickness of surface of ball aluminum powder aluminum oxide is 5-20nm.
In the crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention, organic carrier is the organic system of using always 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 a of ethyl cellulose, modified phenolic resins or Resins, epoxy.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, in butyl carbitol acetate, dibutyl phthalate, the tributyl phosphate at least two kinds.Described auxiliary agent is selected from least a in lubricant, the thixotropic agent.Under the preferable case, described lubricant is hexadecanol or stearyl alcohol, and described thixotropic agent is modified hydrogenated Viscotrol C or polyamide wax powder.
Each components contents gets final product in the usual range of this area in the described organic carrier, and the present invention does not have special stipulation.For example, be benchmark with the total mass of organic carrier, 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 under the situation, be benchmark with the total mass of organic solvent, 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%.
At last, the invention provides the preparation method of described crystal silicon solar energy battery aluminum conductive electric slurry, comprise ball aluminum powder and conductive glass powder are scattered in the organic carrier in proportion, namely obtain described crystal silicon solar energy battery aluminum conductive electric slurry after the grinding; Wherein, described conductive glass powder is conductive glass powder provided by the invention.
The mode that ball aluminum powder, conductive glass powder are scattered in the organic carrier is: directly ball aluminum powder, conductive glass powder are added in the organic carrier, stirring gets final product; Perhaps, earlier conductive glass powder is added in the organic carrier, stir, add ball aluminum powder then in batches, stirring earlier after every batch of ball aluminum powder adds, adding the next batch ball aluminum powder again, after all adding, high-speed stirring makes in the slurry system each component evenly disperse.
Among the present invention, better for the slickness, the planeness that make a formed aluminium back of the body surface, can grind slurry system, be ground to described crystal silicon solar energy battery aluminum conductive electric slurry fineness less than 20 μ m.Can adopt 150 three-roll grinder to carry out, grind number of times and be preferably 15-20 time.
The preparation method of crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention specifically may further comprise the steps:
(1) with metallic lithium or silver-colored halogen compound powder and Bi
2O
3, B
2O
3, SiO
2Mix by a certain percentage Deng oxide powder, pack in the porcelain crucible, put into silicon carbide rod furnace, intensification is preheating to 500 ~ 600 ℃ of insulation 0.2-0.8h, rise to 1200 ~ 1300 ℃ again, melting 0.5 ~ 2h, shrend is filtered, the granulated glass sphere that the obtains ball grinder of packing into, the control mass ratio, the mass ratio of zirconia ball, granulated glass sphere and deionized water is 4:0.8-1.2:0.5-0.8,250 ~ 350 rev/mins of jar speed, and the ball milling time is 5-8h, filter, oven dry, the 0.2-1.0h that dry grinds again, the mass ratio of zirconia ball and granulated glass sphere is 1:1.8-2.5 during dry grinding.Particle diameter D in obtaining
50Be in the conductive glass powder of 0.2 ~ 3.0 μ m, test its normal temperature electric conductivity 2.0 ~ 50 * 10
-4S/cm.
(2) ethyl cellulose, lubricant, thixotropic agent are dissolved in the mixed solvent of being formed by Terpineol 350 or other organic solvents, 50 ~ 80 times it fully being dissolved and stirring, obtain the organic carrier of transparent homogeneous.
(3) organic carrier of gained is placed the stainless cylinder of steel of high speed dispersor, stir on one side, add the glass powder that step 1 makes on one side, stir evenly; Add the ball-type aluminium powder several times, each adding stirs evenly earlier, adds next time again; After all adding, stir evenly at a high speed; Grind 15 ~ 20 times with 150 three-roll grinder, mesh-of-grind is to＜20 μ m again, get final product the aluminum conductive electric slurry finished product.
The battery bending tablet degree that adopts crystal silicon solar energy battery aluminum conductive electric slurry provided by the invention to make is little, and sialic layer is smooth, sticking power is good, has higher electricity conversion simultaneously.
The present invention is further illustrated below by embodiment.
Embodiment 1
Step 1: 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 CaO of 3.5wt%, the MgO of 1.5wt%, the employing V-Mixer mixes, pack in the porcelain crucible, put into silicon carbide rod furnace, heat up and be preheating to 550 ℃, insulation 0.5h, rise to 1250 ℃ again, melting 1.0h, shrend is filtered, to obtain the granulated glass sphere ball grinder of packing into, the control mass ratio, zirconia ball: granulated glass sphere: deionized water=4:1:0.8,300 rev/mins of jar speed, ball milling 6 hours, filter, oven dry, 0.2-1.0h again dry grinds, the mass ratio of zirconia ball and granulated glass sphere is 1:2 during dry grinding, particle diameter D in obtaining
50Be the conductive glass powder of 1.5 μ m, standby.
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, and forms the mixed solvent of slurry.Be benchmark with the carrier total amount, 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%, the 0.5wt% stearyl alcohol is heated to 60 ℃, it is fully dissolved, and stir, obtain the organic carrier solution of homogeneous clarification.
Step 3: the preparation of electrocondution slurry
Get the organic carrier solution that is obtained by step 2 that accounts for slurry total amount 24 wt%, place the stainless cylinder of steel of high speed dispersor, stir on one side, add on one side and account for the glass powder that makes in the top step 1 of total amount 2.0wt%, stir.Particle diameter D in adding again
50Be the ball aluminum powder that the surface coverage of 4.5 μ m has aluminum oxide, the addition of aluminium powder is the 74wt% of total amount, and wherein aluminium powder adds several times, and each adding stirs evenly earlier, adds next time again; After all adding, stir evenly at a high speed; Grind 15 ~ 20 times with 150 three-roll grinder, mesh-of-grind can make the crystal silicon solar energy battery aluminum conductive electric slurry to＜20 μ m again.
Embodiment 2
Make the AgI of 35wt% in the step 1 among the embodiment 1 into the LiCl of 30wt%, Bi
2O
3Amount make 35wt% into by 30wt%, make conductive glass powder, all the other are identical with embodiment 1, make the crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 3
Make the AgI in the step 1 among the embodiment 1 into AgBr, make conductive glass powder, all the other are identical with embodiment 1, make the crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 4
Change the amount of the AgI in the step 1 among the embodiment 1 into 10wt%, Bi
2O
3Amount change 40wt% into, B
2O
3Change 30wt% into, SiO
2Amount change 15wt% into, make conductive glass powder, all the other are identical with embodiment 1, make the crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 5
Change the amount of the AgI in the step 1 among the embodiment 1 into 40wt%, Bi
2O
3Amount change 20wt% into, B
2O
3Change 25 wt% into, make conductive glass powder, all the other are identical with embodiment 1, make the crystal silicon solar energy battery aluminum conductive electric slurry.
Embodiment 6
The amount of AgI in the step 1 among the embodiment 1 is changed 25wt%, Bi
2O
3Amount change 35wt% into, B
2O
3Change 25wt% into, make conductive glass powder, all the other are identical with embodiment 1, make the crystal silicon solar energy battery aluminum conductive electric slurry.
Comparative example
AgI in the step 1 among the embodiment 1 is removed Bi
2O
3Amount change 58wt% into, B
2O
3Change 22wt% into, SiO
2Amount change 15wt% into, make glass powder, all the other are identical with embodiment 1, make the crystal silicon solar energy battery aluminum conductive electric slurry.
The crystal silicon solar energy battery aluminum conductive electric slurry of embodiment 1-6 and comparative example being made by following technology is made into solar cell.
Adopt 280 order web plate silk screen printings on silicon single crystal in the slurry of above-mentioned gained, monocrystalline silicon piece specification: 125 * 125mm, thickness is 200 μ m before the corrosion, thickness is 180 μ m before the printing.Printing weight is every, and bake out temperature is 150 ℃ with starching about 1.20 grams, and drying time is 4 minutes, reenters the continuous tunnel furnace sintering, and preheating temperature is 350 ~ 500 ℃, and the time is 55 seconds, and peak temperature is 915 ℃, and the time is about 1 second.Burning till thickness is 25 ± 5 μ m, obtains being printed with the solar battery sheet of 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's para-electric scarabaeidae skill product), planning standard anchor clamps (TS100F anchor clamps) in room temperature (25 ℃) test powders resistivity, are converted into specific conductivity again, and unit is * 10
-4S/cm.
2, aluminium film surface situation: with examination by sensory organs aluminium film surface situation, whether smooth, have or not the pill of aluminium.
3, aluminium film sticking power: under the room temperature condition, soaked 7 days with tap water, the 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: adopting the method for GB/T17473.3-1998 regulation to carry out, is the digital display multitester measuring of 0.001 Ω with resolving power, and unit is m Ω/.
After the slurry silk screen printing and sintering that embodiment 1-6 and Comparative Examples are made, obtain the battery sheet and carry out above-mentioned test, the average test result with embodiment 1-6 and the corresponding 200 battery sheets of Comparative Examples lists in the 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 |
| The 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 |
From table 1 result of embodiment and comparative example as can be seen, composition of the composition of glass powder and specific conductivity, organic carrier etc. is all influential to the outward appearance behind the sintering of slurry and performance among the present invention.Especially the specific conductivity of glass powder has a strong impact on the square resistance of battery, prepared the specific conductivity height of glass powder by the present invention, simultaneously, aluminium film surface situation and the sticking power of test battery sheet can be found, battery sheet aluminium film surface situation among the embodiment 1-6 is smooth surface, and beading up is not blistered, and sticking power is good, and the aluminium film does not come off.The aluminum conductive electric slurry that namely is 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 efficient of common monocrystaline silicon solar cell is greater than 18.20%.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a conductive glass powder is characterized in that, comprises the halogen compound of glass oxide compound and metallic lithium or silver; Total mass with conductive glass powder is benchmark, and the halogen compound content of described metallic lithium or silver is 10 ~ 40wt%.
2. conductive glass powder as claimed in claim 1 is characterized in that, described glass oxide compound is Bi
2O
3-B
2O
3-SiO
2The glass frit oxide compound.
3. conductive glass powder as claimed in claim 1 is characterized in that, is benchmark with the total mass of conductive glass powder, and the content of the halogen compound of described metallic lithium or silver is 20 ~ 30wt%.
4. conductive glass powder as claimed in claim 1 is characterized in that, the halogen compound of described metallic lithium or silver is AgI.
5. conductive glass powder as claimed in claim 1 is characterized in that, described conductive glass powder specific conductivity at room temperature is 2.0 ~ 50 * 10
-4S/cm.
6. conductive glass powder as claimed in claim 1 is characterized in that, described conductive glass powder specific conductivity at room temperature is 15 ~ 40 * 10
-4S/cm.
7. conductive glass powder as claimed in claim 1 is characterized in that, the middle particle diameter D of described conductive glass powder
50Be 0.2 ~ 3.0 μ m.
8. conductive glass powder as claimed in claim 1 is characterized in that, the initial fusing point of described conductive glass powder is in 550 ~ 650 ℃.
9. conductive glass powder as claimed in claim 1 is characterized in that, is benchmark with the total mass of conductive glass powder, and described glass oxide compound comprises the Bi of 20 ~ 50wt%
2O
3, 5 ~ 30wt% B
2O
3, 2 ~ 15wt% SiO
2, 1.0 ~ 5.0wt% MgO, the Al of 0 ~ 5.0wt% of CaO, 0.5 ~ 5.0wt%
2O
3BaO with 0 ~ 3.0wt%.
10. as the preparation method of conductive glass powder as described among the claim 1-9 any, it is characterized in that, halogen compound powder and the glass oxide compound of metallic lithium or silver are mixed in proportion, and intensification melting, shrend obtain granulated glass sphere after filtering, and obtain glass powder behind the granulated glass sphere ball milling.
11. crystal silicon solar energy battery aluminum conductive electric slurry, it is characterized in that, total mass with described crystal silicon solar energy battery aluminum conductive electric slurry is benchmark, the ball aluminum powder that contains 70-80wt% in the 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 any described conductive glass powder among the claim 1-9.
12. crystal silicon solar energy battery aluminum conductive electric slurry according to claim 11 is characterized in that, described ball aluminum powder is atomizing aluminium powder, and the median particle diameter of described ball aluminum powder is 0.5-8.0 μ m.
13. crystal silicon solar energy battery aluminum conductive electric slurry according to claim 11 is characterized in that, described ball aluminum powder is nucleocapsid structure, and kernel is aluminium simple substance, and shell is aluminum oxide; The thickness of described aluminum oxide is 5-20nm.
14. the preparation method of a crystal silicon solar energy battery aluminum conductive electric slurry is characterized in that, comprises ball aluminum powder and conductive glass powder are scattered in the organic carrier in proportion, namely obtains described crystal silicon solar energy battery aluminum conductive electric slurry after the grinding; Wherein, described conductive glass powder is any described conductive glass powder among the claim 1-9.
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| CN113013402A (en) * | 2021-02-07 | 2021-06-22 | 海南大学 | Glass positive electrode material, preparation method and application thereof |
| CN114409248A (en) * | 2022-01-06 | 2022-04-29 | 江苏日御光伏新材料科技有限公司 | Low-heat-loss tellurium-lithium-silicon-zirconium system glass frit and conductive paste and application thereof |
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| CN103387340A (en) * | 2013-07-24 | 2013-11-13 | 宁波广博纳米新材料股份有限公司 | Lead-free glass powder used for solar cell aluminum paste and preparation method thereof |
| CN103387340B (en) * | 2013-07-24 | 2016-02-10 | 宁波广博纳米新材料股份有限公司 | For the lead-free glass powder and preparation method thereof of solar cell aluminium paste |
| CN103762249A (en) * | 2013-10-16 | 2014-04-30 | 杭州正银电子材料有限公司 | Back-field passivated-aluminum conductive slurry for crystalline-silicon solar cell and preparation method |
| 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 |
| CN103739203A (en) * | 2013-12-17 | 2014-04-23 | 佛山市粤峤陶瓷技术创新服务中心 | Method for manufacturing conductive glass mosaics |
| 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 |
| CN114409248A (en) * | 2022-01-06 | 2022-04-29 | 江苏日御光伏新材料科技有限公司 | Low-heat-loss tellurium-lithium-silicon-zirconium system glass frit and conductive paste and application thereof |
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