CN102850942B - Environment-friendly inorganic binder for silicon solar cell aluminum paste and its preparation method - Google Patents
Environment-friendly inorganic binder for silicon solar cell aluminum paste and its preparation method Download PDFInfo
- Publication number
- CN102850942B CN102850942B CN201210353439.3A CN201210353439A CN102850942B CN 102850942 B CN102850942 B CN 102850942B CN 201210353439 A CN201210353439 A CN 201210353439A CN 102850942 B CN102850942 B CN 102850942B
- Authority
- CN
- China
- Prior art keywords
- binder bond
- mineral binder
- preparation
- solar cell
- inorganic binder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention discloses an environment-friendly inorganic binder for a silicon solar cell aluminum paste and its preparation method. The inorganic binder comprises the following raw materials by weight: 0.5-15% of CaO, 10-30% of B2O3, 0.5-5% of Al2O3, 10-40% of ZnO, 0.5-15% of SiO2, 5-40% of Sb2O3, 0.1%-5% of TiO2, and 0.1-12% of V2O5. The preparation method of the inorganic binder includes the following steps of: a. weighing the raw materials according to the weight percentage of each component; b. placing the weighed raw materials in a mixer, by which the raw materials are mixed uniformly to form a mixture; c. putting the mixture into a crucible, which is then placed in a high-temperature furnace at a temperature of 1000-1100DEG C to conduct melting for 30-50 minutes, then carrying out water quenching and drying; d. putting a molded object into a ball mill to perform ball milling to obtain a finished product; and e. subjecting the finished product to sieving, detection, and packaging. The inorganic binder has the advantages of high conversion efficiency, very strong adhesion, water boiling resistance, and moisture resistance, etc.
Description
Technical field:
The present invention relates to solar battery product technical field, refer in particular to a kind of efficiency of conversion is high, sticking power is extremely strong mineral binder bond and preparation method simple, science thereof for environment friendly silicon solar cell aluminium paste.
Background technology:
The global warming of greenhouse gas emission is more and more subject to the extensive concern of international community; strengthening energy-saving and emission-reduction is important means of reply Global climate change and shortage of resources and the limited challenge of environmental capacity; sun power is as a kind of renewable energy source, and it develops and save conventional energy resources, conservation of nature environment, slows down climate variation etc. earth shaking meaning.Compare with conventional energy resources, sun power also has that total energy is large, permanence, ubiquity, the plurality of advantages such as pollution-free, but it also exists dispersiveness, intermittence to close the weakness such as randomness simultaneously, makes the utilizing that difficulty is large of sun power and efficiency is low.
Making solar cell is mainly to take semiconductor material as basis, and its principle of work is photoelectricity to occur in conversion reaction after utilizing photoelectric material to absorb luminous energy.When irradiate light solar battery surface, a part of photon is absorbed by silicon materials; The transmission ofenergy of photon has been given Siliciumatom, makes electronics occur more to move, and becomes unbound electron and gathers and formed potential difference in P-N knot both sides, when circuit is connected in outside, under the effect of this voltage, by having electric current, flows through external circuit and produces certain output rating.This process essence be: photon energy converts the process of electric energy to.
When making crystal silicon solar energy battery, aluminium paste need to be painted on to silicon chip back side, then sintering forms aluminum back electric field electrode at the back side of silicon chip of solar cell.Aluminium paste is mainly grouped into by one-tenth such as aluminium powder, organic binder bond, mineral binder bond and additives.Wherein aluminium powder is conductive phase, after sintering, forms good ohmic contact with silicon chip; Organic binder bond is as a kind of carrier, the pressed powder that the aluminium powder, glass powder, additive etc. of aluminium paste under stored condition are easily reunited is uniformly distributed, keep suspended state, during printing, make aluminium paste slurry evenly coat silicon chip back side, after dry, aluminium powder and glass powder are attached on silicon chip and do not come off, after sintering, be carbonized, leave over mineral binder bond aluminium film and silicon human body is bonding; Mineral binder bond, be glass powder, softening and formation molten glass layers under sintering temperature, aluminium film and silicon substrate are bonded together, require the softening electricity of glass powder lower, low softening point glass powder can fully soak aluminium powder, makes to form between aluminum particle close contact, contact resistance between reduction and silicon chip, forms good ohmic contact.
The patent No. is that the Chinese patent of CN200910027899.5 discloses mineral binder bond and preparation method thereof for a kind of aluminum paste of silicon solar cells.Described mineral binder bond consists of by mass parts: SiO
2be 10～20%, B
2o
3be 15～30%, Al
2o
3be 5～15%, Bi
2o
3be 15～35%, ZrO
2be that 10～18%, ZnO is 10～25%, MoO
3be 1～8%, total amount 100%.This patent has proposed preferably 5 embodiment and 2 comparing embodiments, and wherein, the scope of the coefficient of expansion drawing in 5 embodiment is 4.4x10
-6/ ℃～5.0x10
-6/ ℃, the scope of stripping strength (sticking power) is 24N/cm～32N/cm, the scope of softening temperature is 528 ℃～589 ℃.Above-mentioned mineral binder bond is with respect to traditional mineral binder bond, under lead-free condition, softening temperature is lower than 600 ℃, and stripping strength (sticking power) is greater than 20N/cm, the aluminium paste configuring with this mineral binder bond is after sintering, and aluminum back electric field electrode and silicon chip have good sticking power and ohmic contact.But still come with some shortcomings: because the scope of the coefficient of expansion of this mineral binder bond is 4.4x10
-6/ ℃～5.0x10
-6/ ℃, and the coefficient of expansion of silicon substrate is 3.5x10
-6/ ℃, to compare with the coefficient of expansion of silicon substrate, the coefficient of expansion of this mineral binder bond is larger, and stripping strength (sticking power) is not very strong, and the sun power aluminium paste transformation efficiency effect that makes like this this mineral binder bond make is lower; In addition, this mineral binder bond is moisture-proof not, and under wet environment, work-ing life is short.
In view of this, the inventor proposes following technical proposals.
Summary of the invention:
The object of the invention is to overcome the deficiencies in the prior art, mineral binder bond and preparation method thereof for environment friendly silicon solar cell aluminium paste that a kind of efficiency of conversion is high, sticking power is extremely strong is provided.
In order to solve the problems of the technologies described above, the present invention has adopted following technical proposals: this environment friendly silicon solar cell aluminium paste with the component of the raw materials by weight composition of mineral binder bond is: CaO:0.5～15%, B
2o
3: 10～30%, Al
2o
3: 0.5～5%, ZnO:10～40%, SiO
2: 0.5～15%, Sb
2o
3: 5～40%, TiO
2: 0.1%～5%, V
2o
5: 0.1～12%.
Furthermore, in technique scheme, the component of described mineral binder bond raw material and weight percent thereof are: CaO:7.5%; B
2o
3: 20%; Al
2o
3: 2.5%; ZnO:30%; SiO
2: 7.5%; Sb
2o
3: 25%; TiO
2: 2.5%; V
2o
5: 5%.
The technical scheme that preparation method of the present invention adopts is: this environment friendly silicon solar cell aluminium paste comprises the following steps by the preparation method of mineral binder bond:
A, according to the weight percent of each component, take each raw material, wherein, each component and weight percent thereof are: CaO:0.5～15%, B
2o
3: 10～30%, Al
2o
3: 0.5～5%, ZnO:10～40%, SiO
2: 0.5～15%, Sb
2o
3: 5～40%, TiO
2: 0.1%～5%, V
2o
5: 0.1～12%;
B, taken raw material is positioned in mixer, and by mixer, raw material is mixed, form compound;
C, above-mentioned compound is carried out to melting, the furnace temperature of melting is 1000～1100 ℃, and the fusion time is 30～50 minutes, then carries out shrend, drying and processing;
D, the forming composition after shrend, drying and processing is ground, form pulverous mineral binder bond finished product;
E, pulverous mineral binder bond finished product is sieved, detects, packed.
Furthermore, in technique scheme, described furnace temperature is 1050 ℃, and melting is 40 minutes.
Furthermore, in technique scheme, the component of described mineral binder bond raw material and weight percent thereof are: CaO:7.5%, B
2o
3: 20%, Al
2o
3: 2.5%, ZnO:30%, SiO
2: 7.5%, Sb
2o
3: 25%, TiO
2: 2.5%, V
2o
5: 5%.
Adopt after technique scheme, the present invention has following beneficial effect compared with prior art:
1, the present invention is through constantly experiment, and its technical scheme adopting has the preferably coefficient of expansion, and in the present invention, the scope of the coefficient of expansion of prepared mineral binder bond is 3.8x10
-6/ ℃～4.3x10
-6/ ℃, and the coefficient of expansion of silicon substrate is 3.5x10
-6/ ℃, the coefficient of expansion of this mineral binder bond and the coefficient of expansion of silicon substrate are close, and make like this stability of this mineral binder bond effectively improve, and the sun power aluminium paste transformation efficiency effect that this mineral binder bond is made is higher, can reach 18.6% or more than.
2, mineral binder bond water boiling resistance, the moisture-proof in the present invention, under wet environment, work-ing life is longer, very convenient to use.
3, in the present invention, the stripping strength of mineral binder bond (sticking power) is extremely strong, more than can reaching 40N/cm, makes mineral binder bond result of use better.
Embodiment:
Below in conjunction with specific embodiment, the present invention is further described.
Embodiment mono-:
This is preferred embodiment of the present invention, and the component that in the present embodiment, the raw materials by weight of mineral binder bond forms is: CaO:7.5%; B
2o
3: 20%; Al
2o
3: 2.5%; ZnO:30%; SiO
2: 7.5%; Sb
2o
3: 25%; TiO
2: 2.5%; V
2o
5: 5%.
In the present embodiment, added a certain amount of CaO(calcium oxide), can improve the adhesive effect of product, improve the sticking power of the finished product.
B
2o
3(boron oxide) is the important materials of making glass, added in raw material, can reduce reduce viscosity and to thermal expansion and chemical durability without any negative impact.The thermotolerance that improves product reduces thermal expansivity.
Al
2o
3(aluminum oxide) can improve the stability of product.
ZnO(zinc oxide), in the present embodiment, ZnO is as a kind of important source material, in whole raw material, occupy heavier ratio, because the thermal expansivity of ZnO is lower, the thermal expansivity of the binding agent that order forms reduces, reach in the scope approaching with silicon substrate, further improve stability and the sticking power of the finished product.
SiO
2(silicon-dioxide) is to make important source material of the present invention, but considers its thermal expansivity, has reduced its consumption in the present embodiment, carrys out so further to reduce the coefficient of expansion.
Sb
2o
3(weisspiessglanz) fusing point is lower, can reduce the viscosity of product molten state, and it also has the effect of froth breaking and the outward appearance product phase that improves product simultaneously.
TiO
2(titanium oxide) thermostability number, and there is lower thermal expansivity, add appropriate TiO
2to improving corrosion-resistant, wettability and the stability of product, play an important role.
V
2o
5(oxidation alum), as a kind of additive in the present invention, it has excellent improving effect to the material in the present invention, improves product strength, and can reduce the viscosity of product molten state.
Above-mentioned environment friendly silicon solar cell aluminium paste comprises the following steps by the preparation method of mineral binder bond:
A, according to the weight percent of above-mentioned each component, take each raw material;
B, taken raw material is positioned in mixer, and by this mixer, raw material is mixed, form compound;
C, above-mentioned compound is put into crucible, be then positioned over furnace temperature and be in the High Temperature Furnaces Heating Apparatus of 1050 ℃, shrend, drying and processing are carried out in melting after 40 minutes;
D, the forming composition after shrend, drying and processing is put into ball mill ball milling, form pulverous mineral binder bond finished product;
E, pulverous mineral binder bond finished product is sieved, detects, packed.
The present embodiment is tested to its test result:
The coefficient of expansion of mineral binder bond is 3.9x10
-6/ ℃;
Stripping strength (sticking power) is 53N/cm.
Transformation efficiency is 18.9%.
Embodiment bis-:
The present embodiment is identical with the method for above-described embodiment, and difference is that the component that in the present embodiment, the raw materials by weight of mineral binder bond forms is:
CaO 10%，B
2O
320%，Al
2O
33%，
ZnO 30%，SiO
210%，Sb
2O
320%，
TiO
23%，V
2O
54%。
The present embodiment is tested to its test result:
The coefficient of expansion of mineral binder bond is 4.2x10
-6/ ℃;
Stripping strength (sticking power) is 49N/cm;
Transformation efficiency is 18.67%.
Embodiment tri-:
The present embodiment is identical with the method for above-described embodiment one, and difference is that the component that in the present embodiment, the raw materials by weight of mineral binder bond forms is:
CaO 1%， B
2O
330%，Al
2O
35%，
ZnO 12%，SiO
215%，Sb
2O
322%，
TiO
25%， V
2O
510%。
The present embodiment is tested to its test result:
The coefficient of expansion of mineral binder bond is 4.3x10
-6/ ℃;
Stripping strength (sticking power) is 45N/cm;
Transformation efficiency is 18.6%.
Embodiment tetra-:
The present embodiment is identical with the method for above-described embodiment one, and difference is that the component that in the present embodiment, the raw materials by weight of mineral binder bond forms is:
CaO 15%，B
2O
310%，Al
2O
31%，
ZnO 20%，SiO
21%， Sb
2O
340%，
TiO
21%， V
2O
512%。
The present embodiment is tested to its test result:
The coefficient of expansion of mineral binder bond is 3.8x10
-6/ ℃;
Stripping strength (sticking power) is 41N/cm.
Transformation efficiency is 18.9%.
In sum, in the present invention, four embodiment all produce a desired effect, and the scope of the coefficient of expansion of mineral binder bond is 3.8x10
-6/ ℃～4.3x10
-6/ ℃, and the coefficient of expansion of silicon substrate is 3.5x10
-6/ ℃, the coefficient of expansion of this mineral binder bond and the coefficient of expansion of silicon substrate are close, and make like this stability of this mineral binder bond effectively improve, sun power aluminium paste transformation efficiency that this mineral binder bond is made effect is higher, can reach 18.6% or more than.In addition, the mineral binder bond water boiling resistance in the present invention, moisture-proof, under wet environment, work-ing life is longer, very convenient to use.In addition, in the present invention, the stripping strength of mineral binder bond (sticking power) is extremely strong, more than can reaching 40N/cm, makes mineral binder bond result of use better.
Certainly, the foregoing is only specific embodiments of the invention, be not to limit the scope of the present invention, all according to equivalence variation or modification that described in the present patent application the scope of the claims, structure, feature and principle are done, all should be included in the present patent application the scope of the claims.
Claims (3)
1. the preparation method of mineral binder bond for environment friendly silicon solar cell aluminium paste, is characterized in that: this preparation method comprises the following steps:
A, according to the weight percent of each component, take each raw material, wherein, each component and weight percent thereof are: CaO:0.5～15%, B
2o
3: 10～30%, Al
2o
3: 0.5～5%, ZnO:10～40%, SiO
2: 0.5～15%, Sb
2o
3: 25～40%, TiO
2: 0.1%～5%, V
2o
5: 0.1～12%;
B, taken raw material is positioned in mixer, and by mixer, raw material is mixed, form compound;
C, above-mentioned compound is carried out to melting, the furnace temperature of melting is 1000～1100 ℃, and the fusion time is 30～40 minutes, then carries out shrend, drying and processing;
D, the forming composition after shrend, drying and processing is ground, form pulverous mineral binder bond finished product;
E, pulverous mineral binder bond finished product is sieved, detects, packed.
2. the preparation method of mineral binder bond for a kind of environment friendly silicon solar cell aluminium paste according to claim 1, is characterized in that: described furnace temperature is 1050 ℃, and melting is 40 minutes.
3. the preparation method of mineral binder bond for a kind of environment friendly silicon solar cell aluminium paste according to claim 1, is characterized in that: the component of described mineral binder bond raw material and weight percent thereof are: CaO:7.5%; B
2o
3: 20%; Al
2o
3: 2.5%; ZnO:30%; SiO
2: 7.5%; Sb
2o
3: 25%; TiO
2: 2.5%; V
2o
5: 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353439.3A CN102850942B (en) | 2012-09-20 | 2012-09-20 | Environment-friendly inorganic binder for silicon solar cell aluminum paste and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353439.3A CN102850942B (en) | 2012-09-20 | 2012-09-20 | Environment-friendly inorganic binder for silicon solar cell aluminum paste and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102850942A CN102850942A (en) | 2013-01-02 |
| CN102850942B true CN102850942B (en) | 2014-10-08 |
Family
ID=47397936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210353439.3A Expired - Fee Related CN102850942B (en) | 2012-09-20 | 2012-09-20 | Environment-friendly inorganic binder for silicon solar cell aluminum paste and its preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102850942B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018221578A1 (en) * | 2017-05-31 | 2018-12-06 | 東洋アルミニウム株式会社 | Paste composition for solar battery |
| CN108623145B (en) * | 2018-06-22 | 2022-02-01 | 贵州佰博新材料科技有限公司 | Lead-free glass powder for back passivation point contact solar cell aluminum paste and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332322A (en) * | 2011-06-20 | 2012-01-25 | 宁波广博纳米新材料股份有限公司 | Solar battery aluminium slurry with strong adhesive force and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005031658B4 (en) * | 2005-07-05 | 2011-12-08 | Schott Ag | Lead-free glass for electronic components |
-
2012
- 2012-09-20 CN CN201210353439.3A patent/CN102850942B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332322A (en) * | 2011-06-20 | 2012-01-25 | 宁波广博纳米新材料股份有限公司 | Solar battery aluminium slurry with strong adhesive force and preparation method thereof |
Non-Patent Citations (6)
| Title |
|---|
| "Effect of Sb2O3 on Thermal Pro perties of Glasses in Bi2O3–B2O3–SiO2 System";Yaping Zhang et al;《Journal of American Ceramic Society》;20090526;第92卷(第8期);第1881-1883页，表1，结论部分 * |
| "低熔封接微晶玻璃无铅化的最新研究进展及其发展趋势";石成利;《陶瓷》;20070325(第3期);第9-12页，2.1部分 * |
| "掺杂过渡金属氧化物对B2O3-ZnO-SiO2玻璃的改性研究";李浩业;《电子元件与材料》;20120405;第31卷(第4期);第41-44页，结论部分 * |
| Yaping Zhang et al."Effect of Sb2O3 on Thermal Pro perties of Glasses in Bi2O3–B2O3–SiO2 System".《Journal of American Ceramic Society》.2009,第92卷(第8期),第1881-1883页，表1，结论部分. |
| 李浩业."掺杂过渡金属氧化物对B2O3-ZnO-SiO2玻璃的改性研究".《电子元件与材料》.2012,第31卷(第4期),第41-44页，结论部分. |
| 石成利."低熔封接微晶玻璃无铅化的最新研究进展及其发展趋势".《陶瓷》.2007,(第3期),第9-12页，2.1部分. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102850942A (en) | 2013-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100446277C (en) | Aluminum back-surface-field conductive paste composition in silicon solar cell and method for preparing same | |
| CN107721183B (en) | A kind of two-sided PERC back of solar cell electrode slurry glass powder and preparation method thereof | |
| CN101271928B (en) | Method for producing high-viscosity solar cell front side silver paste and the same | |
| CN103915127B (en) | Front silver paste for high sheet resistance silicon-based solar cell and preparing method of front silver paste | |
| CN103762249B (en) | Crystal silicon solar batteries back surface field passivation aluminum conductive electric slurry and preparation method | |
| CN107746184A (en) | A kind of glass frit composition and the conductive silver paste and preparation method containing it | |
| CN102701595B (en) | Lead-free glass powder and preparation method thereof | |
| CN103545018B (en) | A kind of solar energy back silver paste and preparation method thereof | |
| CN104478222A (en) | Lead-free glass powder applicable to crystalline silicon solar cell back silver paste and preparation method of lead-free glass powder | |
| CN105679410B (en) | High-adhesion-stability silver-aluminum slurry for solar battery | |
| CN105655005A (en) | Electrode silver slurry for crystalline silicon solar cell | |
| CN105655009A (en) | Silver slurry for crystalline silicon solar cell | |
| CN102850942B (en) | Environment-friendly inorganic binder for silicon solar cell aluminum paste and its preparation method | |
| CN104926109B (en) | Glass powder applied to sliver-covered slurry of crystalline silicon solar cell | |
| CN106007390A (en) | Lead-free glass composition for silicon solar cell front silver paste and preparation method thereof | |
| CN104176939A (en) | Superfine lead-free glass powder for electrode slurry of solar battery, and preparation method thereof | |
| CN102386271A (en) | Method of applying up-conversion materials to crystalline silicon cell | |
| CN103854721A (en) | Metallized silver paste on front side of solar battery and preparation method of metalized silver paste | |
| CN101826564B (en) | Solar cell back surface field aluminum paste | |
| CN104193179B (en) | A kind of silicon solar front side silver paste nanometer glass powder and its preparation method | |
| CN103771715A (en) | Glass dust for back silver paste of solar battery and preparation method of glass dust | |
| CN103426496A (en) | Aluminum back field slurry applied to solar battery, preparation method thereof, preparation method of solar battery piece and solar battery piece | |
| CN103387340A (en) | Lead-free glass powder used for solar cell aluminum paste and preparation method thereof | |
| CN102992632B (en) | Lead-free glass powder for aluminium paste of solar cell | |
| CN104402234B (en) | Crystal silicon solar energy battery front side silver paste glass dust and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |