CN109493991B - Boron slurry for PERC battery - Google Patents
Boron slurry for PERC battery Download PDFInfo
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- CN109493991B CN109493991B CN201811631494.8A CN201811631494A CN109493991B CN 109493991 B CN109493991 B CN 109493991B CN 201811631494 A CN201811631494 A CN 201811631494A CN 109493991 B CN109493991 B CN 109493991B
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 77
- 239000002002 slurry Substances 0.000 title claims abstract description 64
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 title claims abstract description 48
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 title claims abstract description 48
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 title claims abstract description 48
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 59
- 239000002245 particle Substances 0.000 claims abstract description 42
- 239000000853 adhesive Substances 0.000 claims abstract description 36
- 230000001070 adhesive effect Effects 0.000 claims abstract description 36
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 16
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 16
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 16
- 229920000896 Ethulose Polymers 0.000 claims description 2
- 239000001856 Ethyl cellulose Substances 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- 239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 claims description 2
- 229920001249 ethyl cellulose Polymers 0.000 claims description 2
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 2
- 235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 1
- 238000007639 printing Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- CFOAUMXQOCBWNJ-UHFFFAOYSA-N [B].[Si] Chemical compound [B].[Si] CFOAUMXQOCBWNJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/14—Conductive material dispersed in non-conductive inorganic material
- H01B1/18—Conductive material dispersed in non-conductive inorganic material the conductive material comprising carbon-silicon compounds, carbon or silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Dispersion Chemistry (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides boron slurry for a PERC battery, which comprises the following components in percentage by weight: boron powder accounting for 50-80% of the weight of the boron slurry, silicon powder accounting for 1-30% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 0.5-10 mu m. The boron paste for the PERC battery has good printing performance, the printing line width is 50-80 microns, the line height is 10-20 microns, the open-circuit voltage of the PERC battery can be improved by 3-5mv, and the photoelectric conversion efficiency is improved by 0.1-0.2%.
Description
Technical Field
The invention belongs to the technical field of battery materials, and particularly relates to boron slurry for a PERC battery.
Background
The PERC cell has been applied in large scale in recent years as a new process technology for crystalline silicon solar cells. Compared with the conventional battery piece, two processes are added: a backside passivation layer is deposited and then laser opened to form backside contacts. And printing aluminum paste on the back surface field by a screen printing, and drying and sintering to form the back surface field.
The conventional PERC battery technology adopts a back surface field screen printing aluminum paste mode to form a back surface field, and the photoelectric conversion efficiency of the PERC battery piece prepared by the process still has a further space for improving.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide boron slurry for a PERC battery.
In order to achieve the purpose, the invention adopts the technical scheme that: a boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 50-80% of the weight of the boron slurry, silicon powder accounting for 1-30% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 0.5-10 mu m.
Preferably, the particle size of the boron powder is 0.5-5 μm, and the particle size of the silicon powder is 1-5 μm.
Preferably, the particle size of the boron powder is 1-3 μm, and the particle size of the silicon powder is 2-5 μm.
Preferably, the adhesive is selected from one of ethyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose.
Preferably, the boron powder accounts for 60-70% of the weight of the boron slurry.
Preferably, the silicon powder accounts for 10-25% of the weight of the boron slurry.
Preferably, the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent.
The invention also provides a PERC battery, wherein any one of the boron paste is printed on a back surface field local contact area of the PERC battery.
The invention has the beneficial effects that: the boron paste for the PERC battery has good printing performance, the printing line width is 50-80 micrometers, the line height is 10-20 micrometers, the open-circuit voltage of the PERC battery can be increased by 3-5mv, and the photoelectric conversion efficiency is increased by 0.1-0.2%.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples.
Example 1
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
The preparation process of the gunite of the embodiment comprises the following steps: and uniformly mixing the boron powder, the silicon powder and the adhesive, and rolling the mixture in a three-roller machine to obtain the boron-silicon-based adhesive.
Example 2
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 50% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 3
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 60% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 4
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 70% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the granularity of the boron powder is 0.1-10 mu m, and the granularity of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 5
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 80% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 6
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 1% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 7
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 5% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 8
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 10% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 9
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 25% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 10
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 30% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 11
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.5-5 mu m, and the particle size of the silicon powder is 1-5 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Example 12
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 1-3 mu m, and the particle size of the silicon powder is 2-5 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Comparative example 1
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 10nm-50nm, and the particle size of the silicon powder is 50nm-200 nm; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxypropyl cellulose.
Comparative example 2
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 20-50 μm, the particle size of the silicon powder is 20-50 μm, the purity of the boron powder is more than or equal to 90%, and the purity of the silicon powder is more than or equal to 95%;
wherein the adhesive is hydroxypropyl cellulose.
Example 13
A boron slurry for a PERC battery comprises the following components in percentage by weight:
boron powder accounting for 65% of the weight of the boron slurry, silicon powder accounting for 20% of the weight of the boron slurry and an adhesive, wherein the particle size of the boron powder is 0.1-10 mu m, and the particle size of the silicon powder is 1-10 mu m; the purity of the boron powder is more than or equal to 90 percent, and the purity of the silicon powder is more than or equal to 95 percent;
wherein the adhesive is hydroxyethyl cellulose.
Example 14
The boron pastes for the PERC cells of examples 1 to 13 and comparative examples 1 to 2 were printed on the back field local contact area of the PERC cell. The printing performance (line width and line height) of the guniting is detected, the open circuit voltage of the PERC battery is increased, and the photoelectric conversion efficiency of the PERC battery is improved. The results are shown in Table 1.
TABLE 1 printing Performance of boron paste, PERC cell open-Circuit Voltage, PERC cell photoelectric conversion efficiency
The results of example 1 and comparative example 1 show that, compared with boron powder with a nano-scale particle size, boron powder with a micron-scale particle size in boron slurry has better effects of improving the open-circuit voltage of the PERC cell and improving the photoelectric conversion efficiency of the PERC cell.
The results of examples 1 to 5 show that the boron paste for PERC batteries has good performance when the content of boron powder in the boron paste for PERC batteries is 60 to 70%.
The results of examples 1 and 6 to 9 show that the boron slurry for a PERC cell has good performance when the content of silicon powder in the boron slurry for a PERC cell is 10 to 25%.
The results of example 1 and examples 10 to 12 show that the boron paste for a PERC cell has good performance when the particle size of the boron powder in the boron paste for a PERC cell is 1 to 3 μm.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The boron slurry for the PERC battery is characterized by comprising the following components in percentage by weight:
the boron slurry comprises boron powder accounting for 60-70% of the weight of the boron slurry, silicon powder accounting for 10-25% of the weight of the boron slurry and the balance of adhesive, wherein the particle size of the boron powder is 0.5-5 mu m, and the particle size of the silicon powder is 1-5 mu m.
2. The boron paste for the PERC battery according to claim 1, wherein the particle size of the boron powder is 1 μm to 3 μm, and the particle size of the silicon powder is 2 μm to 5 μm.
3. The boron paste for the PERC battery according to claim 1 or 2, wherein the binder is selected from one of ethyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose.
4. The boron paste for the PERC battery as claimed in claim 1, wherein the purity of the boron powder is not less than 90%, and the purity of the silicon powder is not less than 95%.
5. A PERC cell having a back surface field local contact area printed with a boron paste according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631494.8A CN109493991B (en) | 2018-12-28 | 2018-12-28 | Boron slurry for PERC battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631494.8A CN109493991B (en) | 2018-12-28 | 2018-12-28 | Boron slurry for PERC battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109493991A CN109493991A (en) | 2019-03-19 |
| CN109493991B true CN109493991B (en) | 2020-03-27 |
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| CN201811631494.8A Active CN109493991B (en) | 2018-12-28 | 2018-12-28 | Boron slurry for PERC battery |
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| CN114944326B (en) * | 2022-05-18 | 2024-01-16 | 普乐新能源科技(泰兴)有限公司 | Boron slurry for HBC battery and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103280401B (en) * | 2013-05-23 | 2016-01-27 | 刘国钧 | A kind of preparation method of boron composition coated Si nano pulp and application thereof |
| CN103714879B (en) * | 2013-12-27 | 2016-08-17 | 苏州金瑞晨科技有限公司 | Nano-silicon boron slurry and the technique being applied to prepare full-shield boron back surface field thereof |
| CN104617164A (en) * | 2015-02-11 | 2015-05-13 | 苏州金瑞晨科技有限公司 | Nano silicon boron slurry and method for preparing solar cell with the same |
| US20180122640A1 (en) * | 2015-04-15 | 2018-05-03 | Merck Patent Gmbh | Screen-printable boron doping paste with simultaneous inhibition of phosphorus diffusion in co-diffusion processes |
| JP6896506B2 (en) * | 2017-05-25 | 2021-06-30 | 東洋アルミニウム株式会社 | Paste composition for solar cells |
| 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 |
| CN108538445A (en) * | 2018-04-18 | 2018-09-14 | 湖南省国银新材料有限公司 | A kind of semiconductor slurry and preparation method thereof |
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Address after: 510530 Building 1, No.16, Ruifa Road, Luogang District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Ruxing Technology Development Co.,Ltd. Patentee after: Wuxi ruxing Technology Development Co., Ltd Address before: 510530 Building 1, No.16, Ruifa Road, Luogang District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU RUXING TECHNOLOGY DEVELOPMENT Co.,Ltd. Patentee before: Wuxi ruxing Technology Development Co., Ltd |