CN111180529A - Method for preparing front main grid electrode of solar cell through 3D printing - Google Patents
Method for preparing front main grid electrode of solar cell through 3D printing Download PDFInfo
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- CN111180529A CN111180529A CN201911378865.0A CN201911378865A CN111180529A CN 111180529 A CN111180529 A CN 111180529A CN 201911378865 A CN201911378865 A CN 201911378865A CN 111180529 A CN111180529 A CN 111180529A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010146 3D printing Methods 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 54
- 239000011812 mixed powder Substances 0.000 claims abstract description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 31
- 239000010703 silicon Substances 0.000 claims abstract description 31
- 239000011521 glass Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 238000004372 laser cladding Methods 0.000 claims abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000012159 carrier gas Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 12
- 239000002904 solvent Substances 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 18
- 238000007650 screen-printing Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910021419 crystalline silicon Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- 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
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic System
-
- 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
- Y02E10/547—Monocrystalline silicon PV 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a method for preparing a main grid electrode on the front surface of a solar cell through 3D printing, which adopts a 3D laser cladding forming technology, gathers mixed powder consisting of metal powder and glass powder on the surface of a silicon wafer through a nozzle of a 3D printer, converges with laser at one point, and obtains the main grid electrode on the front surface of the solar cell after the mixed powder is melted and cooled. According to the method for preparing the front main grid electrode of the solar cell through 3D printing, the conductive material is not required to be prepared into slurry by adopting a solvent, the conductive metal powder is directly combined with the silicon wafer to form ohmic contact after being melted and cooled by laser, and the front main grid electrode is not required to be sintered subsequently, so that the preparation process is simplified, the material is saved, and the cost is reduced.
Description
Technical Field
The invention relates to a method for preparing a front main grid electrode of a solar cell through 3D printing.
Background
The positive electrode of the crystalline silicon solar cell comprises a main grid electrode and an auxiliary grid electrode, at present, screen printing is mostly adopted in industrial application, the positive main grid electrode and the auxiliary grid electrode are printed at the same time, then sintering is carried out, good ohmic contact between the electrode and a silicon wafer is realized, and current is led out. And knots and broken lines are easy to appear in the screen printing process, and in severe cases, the particles or foreign matters can block meshes, so that slurry cannot permeate through the meshes, and broken grids are caused. In addition, the main grid electrode on the front surface of the solar cell is mainly responsible for electrically connecting with the auxiliary grid and collecting and outputting current collected by the auxiliary grid electrode, so that the printing height of the main grid electrode does not need to be increased. However, in the traditional screen printing process, the main grid and the auxiliary grid are printed simultaneously by using a slurry, in order to increase the height of the auxiliary grid line as much as possible, the height of the main grid line is increased, the increase of the height of the main grid line has no obvious effect on the photoelectric conversion efficiency of the solar cell, the unit consumption of the slurry is increased, the cost is increased, and the increase of the height of the main grid line also causes the increase of the welding fragment rate of the assembly, so that the solar cell is easily scrapped.
After the silicon wafer printed with the slurry is dried and coked, most of the organic solvent in the slurry is volatilized, the film layer shrinks into a solid matter which is tightly adhered to the silicon wafer, and at the moment, the metal electrode material is considered to be in contact with the silicon wafer. The sintering process is to sinter the electrode printed on the silicon wafer into a cell at high temperature, and finally to form ohmic contact between the electrode and the silicon wafer, so as to improve the open-circuit voltage of the cell. The sintering mode adopts high-temperature rapid sintering, and the heating adopts infrared heating. Before sintering at high temperature, organic matters in the slurry must be dried and volatilized completely. The influence of the sintering of the front electrode on the performance of the battery piece is mainly shown in series resistance and parallel resistance, insufficient sintering is caused by too low sintering temperature, the series resistance is too high, burnthrough is caused by too high temperature, and the parallel resistance is too low. The gate break phenomenon may also occur during sintering.
In the process of preparing the solar cell front electrode by the upper printing sintering, the solvent in the slurry has great influence on the printing process and has influence on the subsequent sintering process, the requirements on equipment, process control and the like in the sintering process are higher, and the process for preparing the solar cell front electrode based on the existing screen printing process is necessary to provide the process for preparing the solar cell front electrode without organic solvent and sintering.
Disclosure of Invention
The invention aims to provide a method for preparing a front main grid electrode of a solar cell through 3D printing, and solves the technical problems of complex process, high cost and low yield caused by the fact that an organic solvent is adopted to prepare a slurry for preparing the front main grid electrode of the solar cell through the traditional screen printing process.
The purpose of the invention is realized by the following technical scheme:
a method for preparing a front main grid electrode of a solar cell through 3D printing is characterized in that a 3D printing laser forming technology is adopted, mixed powder consisting of metal powder and glass powder is gathered on the surface of a silicon wafer through a nozzle of a 3D printer and converged at one point with laser, and the front main grid electrode of the solar cell is obtained after the mixed powder is melted and cooled.
According to the invention, 3D printing is carried out on the solar cell front-side gate electrode in a vacuum environment or a closed environment of inert gas, the laser power is 5-100W, the laser frequency is 10-200KHz, the laser spot size is 50-150um, pneumatic powder feeding is adopted for conveying mixed powder by a nozzle, the powder feeding speed is 1-35g/min, and the flow rate of carrier gas is 1-25L/min.
Further, the inert gas is nitrogen or argon.
In the invention, the mixed powder sprayed by the laser or the nozzle is vertical to the silicon chip.
According to the invention, the nozzle of the 3D printer and the laser generator module move relative to the silicon wafer in the horizontal direction to form the front main grid electrode of the solar cell, wherein the moving speed of the nozzle of the 3D printer and the laser generator module is 15000-30000 mm/min.
In the invention, the mixed powder comprises the following components in percentage by mass: 80-99% of metal powder and 1-20% of glass powder.
Further, the metal powder is silver powder.
Further, the mixed powder is spherical or spheroidal, and the particle size is less than 0.5 um.
In the invention, the width of the front main grid electrode is 0.5-2 mm.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the method for preparing the front main grid electrode of the solar cell through 3D printing, the conductive material is not required to be prepared into slurry through a solvent, the conductive metal powder is directly electrically connected with the auxiliary grid after being melted and cooled through laser, and the front main grid electrode is not required to be sintered subsequently, so that the preparation process is simplified.
(2) According to the solar cell front main grid prepared by the method, the height of the main grid is easy to control, the height of the main grid embedded silicon wafer part is greatly shortened compared with the height of the main grid embedded silicon wafer part in the prior art, the main grid slurry consumption can be saved by 30-60%, the cost is reduced, and the welding fragment rate of a photovoltaic module is reduced;
(3) according to the invention, the silver paste used in the traditional screen printing is replaced by the mixed powder consisting of the metal silver powder and the glass powder, and the silver paste has no organic component, so that the silver paste is safer and more environment-friendly.
Drawings
FIG. 1 is a schematic diagram of a solar cell front main grid electrode prepared by 3D printing according to the invention;
FIG. 2 is a front side main grid electrode structure of the solar cell of the present invention;
FIG. 3 is a diagram of a prior art solar cell front side main grid electrode structure;
the reference numbers in the figures are as follows: 1-a silicon wafer; 2-a solar cell front side main grid electrode; a 3-3D printer nozzle; 4-a laser beam; 5-front side main gate electrode; 6-front passivation film; 7-N type silicon; 8-P type silicon;
Detailed Description
The present invention is further described below in conjunction with specific examples to better understand and implement the technical solutions of the present invention for those skilled in the art.
Example 1
A method for preparing a front main grid electrode of a solar cell through 3D printing comprises the following steps: the method comprises the steps of adopting a 3D laser cladding forming technology, enabling mixed powder consisting of metal powder and glass powder to be gathered on the surface of a silicon wafer through a 3D printer nozzle and converge at one point with laser, enabling a laser beam to be perpendicular to the surface of the silicon wafer, enabling the 3D printer nozzle and a laser generator module to move relative to the silicon wafer in the horizontal direction, enabling the 3D printer nozzle and the laser generator module to move at the speed of 28000mm/min, obtaining a front main grid electrode of a solar cell after the mixed powder is melted and cooled as shown in figure 1, and enabling the front main grid electrode of the solar cell prepared by the existing screen printing technology to be obviously lower than the embedding height of the front main grid electrode of the solar cell prepared by the prior art and greatly reducing the cost of the front main grid electrode. In the embodiment, the 3D printing is performed on the solar cell front gate electrode in a closed environment of inert gas nitrogen, the laser power is 25W, the laser frequency is 125KHz, the laser spot size is 80um, the nozzle is used for conveying mixed powder by adopting pneumatic powder conveying, the powder conveying speed is 15g/min, and the flow rate of carrier gas is 12L/min. The mixed powder consists of silver powder and glass powder, and is spherical or quasi-spherical, and the particle size of the mixed powder is less than 0.5 um. The mass percent of the silver powder in the mixed powder is 83 percent, the mass percent of the glass powder is 17 percent, and the mass percent of the glass powder and the silver powder is 20.48 percent. The consumption of the finally prepared solar cell monolithic main grid electrode mixed powder is 16.2mg, the width of the main grid electrode is 0.81mm, and the height of the main grid is 3.57 mu m.
Comparative example 1
The front main grid electrode of the solar cell is prepared by taking front silver paste with the mass percentage of 20.48 percent of glass powder and silver powder, and performing screen printing and sintering.
Example 2
A method for preparing a front main grid electrode of a solar cell through 3D printing comprises the following steps: the method comprises the steps of adopting a 3D laser cladding forming technology, collecting mixed powder consisting of metal powder and glass powder on the surface of a silicon wafer through a 3D printer nozzle, converging the mixed powder on one point with laser, enabling a laser beam to be vertical to the surface of the silicon wafer, enabling the 3D printer nozzle and a laser generator module to move relative to the silicon wafer in the horizontal direction, enabling the 3D printer nozzle and the laser generator module to move at 25000mm/min, and obtaining a main grid electrode on the front surface of the solar cell after the powder is melted and cooled. In the embodiment, the 3D printing is performed on the solar cell front gate electrode in a closed environment of inert gas nitrogen, the laser power is 50W, the laser frequency is 100KHz, the laser spot size is 75um, the nozzle is used for conveying mixed powder by adopting pneumatic powder conveying, the powder conveying speed is 15g/min, and the flow rate of carrier gas is 12L/min. The mixed powder consists of silver powder and glass powder, and is spherical or quasi-spherical, and the particle size of the mixed powder is less than 0.5 um. The mass percent of the silver powder in the mixed powder is 88 percent, the mass percent of the glass powder is 12 percent, and the mass percent of the glass powder and the silver powder is 13.64 percent. The dosage of the finally prepared solar cell monolithic main grid electrode mixed powder is 16.7mg, the width of the main grid electrode is 0.77mm, and the height of the main grid is 3.64 mu m.
Comparative example 2
The front main grid electrode of the solar cell is prepared by taking front silver paste with 13.64% of glass powder and silver powder by mass percent, and performing screen printing and sintering.
Example 3
A method for preparing a front main grid electrode of a solar cell through 3D printing comprises the following steps: the method comprises the steps of adopting a 3D laser cladding forming technology, collecting mixed powder consisting of metal powder and glass powder on the surface of a silicon wafer through a 3D printer nozzle, converging the mixed powder on one point with laser, enabling a laser beam to be vertical to the surface of the silicon wafer, enabling the 3D printer nozzle and a laser generator module to move relative to the silicon wafer in the horizontal direction, enabling the 3D printer nozzle and the laser generator module to move at a speed of 23000mm/min, and obtaining a main grid electrode on the front surface of the solar cell after the powder is melted and cooled. In the embodiment, the 3D printing is performed on the solar cell front gate electrode in a closed environment of inert gas nitrogen, the laser power is 80W, the laser frequency is 75KHz, the laser spot size is 125um, the nozzle is used for conveying mixed powder by adopting pneumatic powder conveying, the powder conveying speed is 15g/min, and the flow rate of carrier gas is 12L/min. The mixed powder consists of silver powder and glass powder, and is spherical or quasi-spherical, and the particle size of the mixed powder is less than 0.5 um. The mass percent of the silver powder in the mixed powder is 92%, the mass percent of the glass powder is 8%, and the mass percent of the glass powder and the silver powder is 8.7%. The dosage of the finally prepared single-chip main grid electrode mixed powder of the solar cell is 16mg, the width of the main grid electrode is 0.75mm, and the height of the main grid is 2.98 um.
Comparative example 3
The front-side main grid electrode of the solar cell is prepared by taking front-side auxiliary grid slurry of which the mass percentage of glass powder to silver powder is 8.7%, and performing screen printing and sintering.
Example 4
A method for preparing a front main grid electrode of a solar cell through 3D printing comprises the following steps: the method comprises the steps of adopting a 3D laser cladding forming technology, collecting mixed powder consisting of metal powder and glass powder on the surface of a silicon wafer through a 3D printer nozzle, converging the mixed powder on one point with laser, enabling a laser beam to be vertical to the surface of the silicon wafer, enabling the 3D printer nozzle and a laser generator module to move relative to the silicon wafer in the horizontal direction, enabling the 3D printer nozzle and the laser generator module to move at 25000mm/min, and obtaining a main grid electrode on the front surface of the solar cell after the powder is melted and cooled. In the embodiment, the 3D printing is performed on the solar cell front gate electrode in a closed environment of inert gas nitrogen, the laser power is 20W, the laser frequency is 75KHz, the laser spot size is 100um, the nozzle is used for conveying mixed powder by adopting pneumatic powder conveying, the powder conveying speed is 15g/min, and the flow rate of carrier gas is 12L/min. The mixed powder consists of silver powder and glass powder, and is spherical or quasi-spherical, and the particle size of the mixed powder is less than 0.5 um. The mass percent of the silver powder in the mixed powder is 97%, the mass percent of the glass powder is 3%, and the mass percent of the glass powder and the silver powder is 3.09%. The dosage of the finally prepared solar cell monolithic main grid electrode mixed powder is 16mg, the width of the main grid electrode is 0.79mm, and the height of the main grid is 3.12 um.
Comparative example 4
The front main grid electrode of the solar cell is prepared by taking front silver paste with the mass percentage of 3.09% of glass powder and silver powder, and performing screen printing and sintering.
Performance test experiment
The process flow for manufacturing the solar cell by traditional screen printing comprises the following steps: texturing, diffusing, etching, annealing, back passivation, front film coating, back laser film opening, electrode electric field screen printing, sintering and light decay resisting to prepare the crystalline silicon solar cell.
The 3D printing solar cell process flow comprises the following steps: texturing, diffusing, etching, annealing, back passivation, front coating, 3D printing of an electrode electric field and light attenuation resistance, and then the crystalline silicon solar cell is prepared.
The conversion efficiency of solar cells fabricated using the front side main grid electrodes of the above examples and comparative examples was examined as shown in table 1.
Table 1 conversion efficiency of solar cells made of the front side main grid electrode of examples and comparative examples
The above embodiments illustrate various embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto, and those skilled in the art can achieve the objectives of the present invention based on the disclosure of the present invention, and any modifications and variations based on the concept of the present invention fall within the scope of the present invention, which is defined by the claims.
Claims (9)
1. A method for preparing a main grid electrode on the front surface of a solar cell through 3D printing is characterized in that a 3D laser cladding forming technology is adopted, mixed powder consisting of metal powder and glass powder is gathered on the surface of a silicon wafer through a nozzle of a 3D printer and converged at one point with laser, and the main grid electrode on the front surface of the solar cell is obtained after the mixed powder is melted and cooled.
2. The method for preparing the front main grid electrode of the solar cell through 3D printing according to claim 1, wherein the 3D printing is carried out on the front grid electrode of the solar cell in a vacuum environment or a closed inert gas environment, the laser power is 5-100W, the laser frequency is 10-200KHz, the laser spot size is 50-150 μm, the mixed powder is conveyed through a nozzle by adopting pneumatic powder conveying, the powder conveying speed is 1-35g/min, and the flow rate of carrier gas is 1-25L/min.
3. The method for preparing the front main grid electrode of the solar cell by 3D printing according to claim 2, wherein the inert gas is nitrogen or argon.
4. The method for preparing the front main grid electrode of the solar cell through 3D printing according to claim 3, wherein the mixed powder sprayed by the laser or the nozzle is vertical to a silicon wafer.
5. The method for preparing the front main grid electrode of the solar cell through 3D printing according to claim 4, wherein the nozzle of the 3D printer and the laser generator module move relative to the silicon wafer in the horizontal direction to form the front main grid electrode of the solar cell, and the moving speed of the nozzle of the 3D printer and the laser generator module is 15000-30000 mm/min.
6. The 3D printing method for preparing the front main grid electrode of the solar cell according to any one of claims 1 to 5, wherein the mixed powder comprises the following components in percentage by mass: 80-99% of metal powder and 1-20% of glass powder.
7. The method for preparing the front main grid electrode of the solar cell by 3D printing according to claim 6, wherein the metal powder is silver powder.
8. The method for preparing the front main grid electrode of the solar cell through 3D printing according to claim 6, wherein the mixed powder is spherical or spheroidal and has a particle size of less than 0.5 um.
9. The method for preparing the front main grid electrode of the solar cell by 3D printing according to claim 8, wherein the width of the front side branch grid electrode is 0.5-2 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022188995A1 (en) * | 2021-03-12 | 2022-09-15 | Applied Materials Italia S.R.L. | Method and apparatus for printing on a substrate for the production of a solar cell |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008060211A1 (en) * | 2008-12-04 | 2010-06-10 | Stiebel Eltron Gmbh & Co. Kg | Method for metal contacting a solar cell by laser cladding process, comprises applying a seed layer of metal on a surface of substrate through powder stream, melting the particles by laser beam and soldering with surface of the solar cell |
| CN107195354A (en) * | 2017-04-20 | 2017-09-22 | 广东爱康太阳能科技有限公司 | One kind back of the body passivation silicon solar cell positive electrode silver paste and preparation method thereof |
-
2019
- 2019-12-27 CN CN201911378865.0A patent/CN111180529A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008060211A1 (en) * | 2008-12-04 | 2010-06-10 | Stiebel Eltron Gmbh & Co. Kg | Method for metal contacting a solar cell by laser cladding process, comprises applying a seed layer of metal on a surface of substrate through powder stream, melting the particles by laser beam and soldering with surface of the solar cell |
| CN107195354A (en) * | 2017-04-20 | 2017-09-22 | 广东爱康太阳能科技有限公司 | One kind back of the body passivation silicon solar cell positive electrode silver paste and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 吴芬;邹义冬;林文松;: "选择性激光烧结技术的应用及其烧结件后处理研究进展", 人工晶体学报, no. 11, pages 2666 - 2671 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022188995A1 (en) * | 2021-03-12 | 2022-09-15 | Applied Materials Italia S.R.L. | Method and apparatus for printing on a substrate for the production of a solar cell |
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