CN109755350A - A kind of solar battery and preparation method thereof - Google Patents
A kind of solar battery and preparation method thereof Download PDFInfo
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- CN109755350A CN109755350A CN201910032334.XA CN201910032334A CN109755350A CN 109755350 A CN109755350 A CN 109755350A CN 201910032334 A CN201910032334 A CN 201910032334A CN 109755350 A CN109755350 A CN 109755350A
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- solar battery
- passivation
- baffle
- passivated
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- 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
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- 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
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Abstract
The invention discloses a kind of production methods of solar battery to obtain solar battery to be passivated by successively carrying out making herbs into wool, diffusion and etching to matrix；Passivating film is set in the rear-face contact setting passivation baffle of the solar battery to be passivated, then at the back side of the solar battery to be passivated, obtains the solar battery in default stage；The passivation baffle is the passivation baffle with multiple hollowed out areas, the passivating film can be prevented in the drape forming that electrode will be arranged；The passivation baffle is removed, and electrode is set on the solar battery in the default stage, obtains the solar battery.The invention enables the passivating films cannot be in the position deposition modeling of predetermined set electrode, electrode can directly form Ohmic contact with semiconductor, and scheme provided by the invention will not form complex centre in tapping, improve minority carrier life time, battery efficiency is improved, technique is relatively simple.Meanwhile the present invention also provides a kind of solar batteries with above-mentioned beneficial effect.
Description
Technical field
The present invention relates to solar battery manufacturing fields, more particularly to a kind of solar battery and preparation method thereof.
Background technique
Solar energy is as a kind of renewable energy, from invention initial stage just by global attention, into after 21 century, more
Be developed come more solar cell power generation technologies, since solar energy is more stable, no pollution, thus especially by it is vast from
The favor of industry personnel, wherein passivation is a kind of manufacture craft of high conversion efficiency solar battery, the battery after passivation by
Cell backside increases insulating passivation layer, reduces photo-generated carrier overleaf compound, can effectively increase the minority carrier life time of battery,
The short circuit current and open-circuit voltage for promoting battery, promote the transfer efficiency of battery.
But in the prior art, silkscreen process needs print electrode in the positive back surface of battery, and are arranged and carry on the back in battery
The insulating passivation layer in face, which blocks, forms good Ohmic contact between back surface field and silicon wafer, carrying on the back to the battery needs after this passivation
Laser opening is carried out on the insulating passivation layer in face, to form good Ohmic contact between back surface field and silicon wafer.Though laser opening
So solve the contact problems between back surface field and silicon wafer, but laser opening will cause silicon chip surface damage, tapping will form
High compound complex centre, reduces the minority carrier life time of battery, influences battery efficiency, meanwhile, the process is more complicated, therefore, how
It is those skilled in the art's urgent problem to be solved without using laser opening also achievable cell backside electrode fluting.
Summary of the invention
The object of the present invention is to provide a kind of solar batteries and preparation method thereof, to solve laser opening in the prior art
It will cause silicon chip surface damage, tapping will form high compound complex centre, reduce the minority carrier life time of battery, influence battery effect
The problem of rate, complex manufacturing technology.
In order to solve the above technical problems, the present invention provides a kind of production method of solar battery, comprising:
Making herbs into wool, diffusion and etching are successively carried out to matrix, obtain solar battery to be passivated；
In the rear-face contact setting passivation baffle of the solar battery to be passivated, then in the solar battery to be passivated
The back side passivating film is set, obtain the solar battery in default stage；The passivation baffle is with the blunt of multiple hollowed out areas
Change baffle, the passivating film can be prevented in the drape forming that electrode will be arranged；
The passivation baffle is removed, and electrode is set on the solar battery in the default stage, obtains the sun
It can battery.
Optionally, in the production method of the solar battery, the passivation baffle includes multiple blend stops, the blend stop
The region separated is hollowed out area；
The solar battery to be passivated can be completely covered in the passivation baffle.
Optionally, in the production method of the solar battery, the height of the blend stop is greater than the thickness of the passivating film
Degree and the thickness of the protective film of the solar battery to be passivated and.
Optionally, in the production method of the solar battery, the blend stop is equidistant parallel blend stop or equidistant
Grid blend stop.
Optionally, in the production method of the solar battery, the range of the spacing of the adjacent blend stop is 10 millimeters
To 20 millimeters, including endpoint value.
Optionally, in the production method of the solar battery, the width of the blend stop is 1 millimeter to 2 millimeters, including
Endpoint value.
Optionally, in the production method of the solar battery, the passivation baffle is that high temperature resistant is passivated baffle.
Optionally, in the production method of the solar battery, the passivation baffle is that inorganic non-metallic is passivated baffle.
Optionally, in the production method of the solar battery, the passivation baffle is that graphite is passivated baffle.
The present invention also provides a kind of solar battery, the solar battery is to pass through the sun described in any of the above-described kind
The solar battery that the production method of energy battery obtains.
The production method of solar battery provided by the present invention, by successively carrying out making herbs into wool, diffusion and etching to matrix,
Obtain solar battery to be passivated；The solar battery to be passivated rear-face contact setting passivation baffle, then it is described to
Passivating film is arranged in the back side for being passivated solar battery, obtains the solar battery in default stage；The passivation baffle is with more
The passivation baffle of a hollowed out area can prevent the passivating film in the drape forming that electrode will be arranged；Remove the passivation gear
Plate, and electrode is set on the solar battery in the default stage, obtain the solar battery.The present invention is by being arranged
The shutter is set before the passivating film, prevent the passivating film is from the position deposition modeling in predetermined set electrode, it
As long as afterwards removing the shutter, the groove of setting electrode can be left, electrode is made directly can to form ohm with semiconductor
Contact, compared with the prior art in laser opening, scheme provided by the invention will not tapping formed complex centre, improve
The minority carrier life time of battery, and then battery efficiency is improved, meanwhile, technique is relatively simple.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of flow diagram of specific embodiment of the production method of solar battery provided by the invention；
Fig. 2 is the process signal of another specific embodiment of the production method of solar battery provided by the invention
Figure；
Fig. 3 is the process signal of another specific embodiment of the production method of solar battery provided by the invention
Figure.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
The production method that core of the invention is to provide a kind of solar battery, a kind of specific embodiment process signal
Figure is as shown in Figure 1, be called specific embodiment one, comprising:
Step S101: making herbs into wool, diffusion and etching are successively carried out to matrix, obtain solar battery to be passivated.
Step S102: in the rear-face contact setting passivation baffle of above-mentioned solar battery to be passivated, then above-mentioned wait be passivated
Passivating film is arranged in the back side of solar battery, obtains the solar battery in default stage；Above-mentioned passivation baffle is to engrave with multiple
The passivation baffle of empty region can prevent above-mentioned passivating film in the drape forming that electrode will be arranged.
Step S103: above-mentioned passivation baffle is removed, and electrode is set on the solar battery in above-mentioned default stage, is obtained
Above-mentioned solar battery.
It further, can also be first in the front setting anti-reflection of above-mentioned solar battery before above-mentioned electrode is set
Layer.
Further, above-mentioned passivation baffle includes multiple blend stops, and the region that above-mentioned blend stop separates is hollowed out area；On
Above-mentioned solar battery to be passivated can be completely covered by stating passivation baffle.
Further, above-mentioned blend stop is equidistant parallel blend stop or equidistant grid blend stop.
Further, the range of the spacing of adjacent above-mentioned blend stop is 10 millimeters to 20 millimeters, including endpoint value, such as 10.0
Any of millimeter, 15.2 millimeters or 20.0 millimeters.
Further, the width of above-mentioned blend stop is 1 millimeter to 2 millimeters, including endpoint value, such as 1.0 millimeters, 1.5 millimeters
Or any of 2.0 millimeters.
Further, above-mentioned passivation baffle is that high temperature resistant is passivated baffle.
Further, above-mentioned passivation baffle is that inorganic non-metallic is passivated baffle.
The production method of solar battery provided by the present invention, by successively carrying out making herbs into wool, diffusion and etching to matrix,
Obtain solar battery to be passivated；Above-mentioned solar battery to be passivated rear-face contact setting passivation baffle, then it is above-mentioned to
Passivating film is arranged in the back side for being passivated solar battery, obtains the solar battery in default stage；Above-mentioned passivation baffle is with more
The passivation baffle of a hollowed out area can prevent above-mentioned passivating film in the drape forming that electrode will be arranged；Remove above-mentioned passivation gear
Plate, and electrode is set on the solar battery in above-mentioned default stage, obtain above-mentioned solar battery.The present invention is by being arranged
Above-mentioned shutter is set before above-mentioned passivating film, prevent above-mentioned passivating film is from the position deposition modeling in predetermined set electrode, it
As long as afterwards removing above-mentioned shutter, the groove of setting electrode can be left, electrode is made directly can to form ohm with semiconductor
Contact, compared with the prior art in laser opening, scheme provided by the invention will not tapping formed complex centre, improve
The minority carrier life time of battery, and then battery efficiency is improved, meanwhile, technique is relatively simple.
On the basis of specific embodiment one, it is for further processing, is embodied on the surface of above-mentioned passivation layer
Mode two, flow diagram is as shown in Figure 2, comprising:
Step S201: making herbs into wool, diffusion and etching are successively carried out to matrix, obtain solar battery to be passivated.
Step S202: in the rear-face contact setting passivation baffle of above-mentioned solar battery to be passivated, then above-mentioned wait be passivated
The back side of solar battery sets gradually passivating film and protective film, obtains the solar battery in default stage；Above-mentioned passivation baffle
For the passivation baffle with multiple hollowed out areas, above-mentioned passivating film and said protection film can be prevented in the region that electrode will be arranged
Molding；Above-mentioned passivation baffle includes multiple blend stops, and the region that above-mentioned blend stop separates is hollowed out area；Above-mentioned passivation baffle can be complete
The above-mentioned solar battery to be passivated of all standing；The height of above-mentioned blend stop is greater than the thickness and the above-mentioned sun to be passivated of above-mentioned passivating film
The sum of the thickness of the protective film of energy battery.
Step S203: above-mentioned passivation baffle is removed, and electrode is set on the solar battery in above-mentioned default stage, is obtained
Above-mentioned solar battery.
Present embodiment and above-mentioned specific embodiment the difference is that, present embodiment is above-mentioned blunt
The surface for changing film is additionally arranged protective film, remaining step office is identical as above-mentioned specific embodiment, not reinflated herein to repeat.
In present embodiment, on the surface of above-mentioned passivating film, be additionally arranged protective film, add protective film can make it is above-mentioned
The surface of solar battery is scratched from external mechanical, can effectively promote the stability of above-mentioned solar cell working and above-mentioned
The service life of solar battery, meanwhile, the height of the above-mentioned blend stop in present embodiment is greater than the thickness of above-mentioned passivating film
Degree and the thickness of the protective film of above-mentioned solar battery to be passivated and, in other words, said protection film can not will also set
The area deposition molding of electrode is set, the method that present embodiment provides still can be straight after removing above-mentioned passivation baffle
Connect setting electrode, simple process.
On the basis of specific embodiment two, further the material of above-mentioned passivation baffle is defined, is obtained specific
Embodiment three, flow diagram is as shown in Figure 3, comprising:
Step S301: making herbs into wool, diffusion and etching are successively carried out to matrix, obtain solar battery to be passivated.
Step S302: in the rear-face contact setting passivation baffle of above-mentioned solar battery to be passivated, then above-mentioned wait be passivated
The back side of solar battery sets gradually passivating film and protective film, obtains the solar battery in default stage；Above-mentioned passivation baffle
For the passivation baffle with multiple hollowed out areas, above-mentioned passivating film and said protection film can be prevented in the region that electrode will be arranged
Molding；Above-mentioned passivation baffle includes multiple blend stops, and the region that above-mentioned blend stop separates is hollowed out area；Above-mentioned passivation baffle can be complete
The above-mentioned solar battery to be passivated of all standing；The height of above-mentioned blend stop is greater than the thickness and the above-mentioned sun to be passivated of above-mentioned passivating film
The sum of the thickness of the protective film of energy battery；Above-mentioned passivation baffle is that graphite is passivated baffle.
Step S303: above-mentioned passivation baffle is removed, and electrode is set on the solar battery in above-mentioned default stage, is obtained
Above-mentioned solar battery.
Present embodiment and above-mentioned specific embodiment the difference is that, present embodiment defines
Stating passivation baffle is carbon barrier, remaining step is identical as above-mentioned specific embodiment, not reinflated herein to repeat.
Present embodiment uses material of the graphite as above-mentioned passivation baffle, because of graphite itself high temperature resistant, simultaneously
Impurity metal ion will not be introduced in the manufacturing process of battery, can obtain cleaner partly leading after removing above-mentioned passivation baffle
Body surface face, further decreases the formation in semiconductor surface complex centre, to promote the working efficiency of above-mentioned solar battery.
The present invention also provides a kind of solar battery, above-mentioned solar battery is to pass through any of the above-described kind of above-mentioned sun
The solar battery that the production method of energy battery obtains.
The production method of solar battery provided by the present invention, by successively carrying out making herbs into wool, diffusion and etching to matrix,
Obtain solar battery to be passivated；Above-mentioned solar battery to be passivated rear-face contact setting passivation baffle, then it is above-mentioned to
Passivating film is arranged in the back side for being passivated solar battery, obtains the solar battery in default stage；Above-mentioned passivation baffle is with more
The passivation baffle of a hollowed out area can prevent above-mentioned passivating film in the drape forming that electrode will be arranged；Remove above-mentioned passivation gear
Plate, and electrode is set on the solar battery in above-mentioned default stage, obtain above-mentioned solar battery.The present invention is by being arranged
Above-mentioned shutter is set before above-mentioned passivating film, prevent above-mentioned passivating film is from the position deposition modeling in predetermined set electrode, it
As long as afterwards removing above-mentioned shutter, the groove of setting electrode can be left, electrode is made directly can to form ohm with semiconductor
Contact, compared with the prior art in laser opening, scheme provided by the invention will not tapping formed complex centre, improve
The minority carrier life time of battery, and then battery efficiency is improved, meanwhile, technique is relatively simple.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
It should be noted that in the present specification, relational terms such as first and second and the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or equipment for including above-mentioned element.
Solar battery provided by the present invention and preparation method thereof is described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention.It should be pointed out that for those skilled in the art, not departing from this hair
, can be with several improvements and modifications are made to the present invention under the premise of bright principle, these improvement and modification also fall into power of the present invention
In the protection scope that benefit requires.
Claims (10)
1. a kind of production method of solar battery characterized by comprising
Making herbs into wool, diffusion and etching are successively carried out to matrix, obtain solar battery to be passivated；
In the rear-face contact setting passivation baffle of the solar battery to be passivated, then the back in the solar battery to be passivated
Passivating film is arranged in face, obtains the solar battery in default stage；The passivation baffle is the passivation gear with multiple hollowed out areas
Plate can prevent the passivating film in the drape forming that electrode will be arranged；
The passivation baffle is removed, and electrode is set on the solar battery in the default stage, obtains the solar-electricity
Pond.
2. the production method of solar battery as described in claim 1, which is characterized in that the passivation baffle includes multiple gears
Item, the region that the blend stop separates are hollowed out area；
The solar battery to be passivated can be completely covered in the passivation baffle.
3. the production method of solar battery as claimed in claim 2, which is characterized in that the height of the blend stop is greater than described
The thickness of the protective film of the thickness of passivating film and the solar battery to be passivated and.
4. the production method of solar battery as claimed in claim 3, which is characterized in that the blend stop is equidistant parallel gear
Item or equidistant grid blend stop.
5. the production method of solar battery as claimed in claim 4, which is characterized in that the model of the spacing of the adjacent blend stop
It encloses for 10 millimeters to 20 millimeters, including endpoint value.
6. the production method of solar battery as claimed in claim 5, which is characterized in that the width of the blend stop is 1 millimeter
To 2 millimeters, including endpoint value.
7. such as the production method of solar battery as claimed in any one of claims 1 to 6, which is characterized in that the passivation baffle
Baffle is passivated for high temperature resistant.
8. the production method of solar battery as claimed in claim 3, which is characterized in that the passivation baffle is inorganic non-gold
Belong to passivation baffle.
9. the production method of solar battery as claimed in claim 4, which is characterized in that the passivation baffle is graphite passivation
Baffle.
10. a kind of solar battery, which is characterized in that the solar battery is by as described in any one of claim 1 to 9
Solar battery the obtained solar battery of production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032334.XA CN109755350A (en) | 2019-01-14 | 2019-01-14 | A kind of solar battery and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032334.XA CN109755350A (en) | 2019-01-14 | 2019-01-14 | A kind of solar battery and preparation method thereof |
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| CN109755350A true CN109755350A (en) | 2019-05-14 |
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ID=66405570
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120255606A1 (en) * | 2007-12-14 | 2012-10-11 | Hsin-Chiao Luan | Anti-reflective coating with high optical absorption layer for backside contact solar cells |
| CN102969398A (en) * | 2012-11-20 | 2013-03-13 | 宁波尤利卡太阳能科技发展有限公司 | Preparation method of back passivated crystalline silicon solar cell |
| CN104425651A (en) * | 2013-09-09 | 2015-03-18 | 上海理想万里晖薄膜设备有限公司 | Process for preparing heterojunction solar cell without grid electrode on front surface at low temperature |
-
2019
- 2019-01-14 CN CN201910032334.XA patent/CN109755350A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120255606A1 (en) * | 2007-12-14 | 2012-10-11 | Hsin-Chiao Luan | Anti-reflective coating with high optical absorption layer for backside contact solar cells |
| CN102969398A (en) * | 2012-11-20 | 2013-03-13 | 宁波尤利卡太阳能科技发展有限公司 | Preparation method of back passivated crystalline silicon solar cell |
| CN104425651A (en) * | 2013-09-09 | 2015-03-18 | 上海理想万里晖薄膜设备有限公司 | Process for preparing heterojunction solar cell without grid electrode on front surface at low temperature |
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Application publication date: 20190514 |
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