CN102509749A - Texturing method for polycrystalline solar cell - Google Patents
Texturing method for polycrystalline solar cell Download PDFInfo
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- CN102509749A CN102509749A CN2011104390563A CN201110439056A CN102509749A CN 102509749 A CN102509749 A CN 102509749A CN 2011104390563 A CN2011104390563 A CN 2011104390563A CN 201110439056 A CN201110439056 A CN 201110439056A CN 102509749 A CN102509749 A CN 102509749A
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- aluminium chassis
- polycrystalline silicon
- silicon solar
- suede
- solar battery
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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
Abstract
The invention discloses a surface texturing method for a silicon-based solar cell. A polycrystalline surface is subjected to the combined machining of micro electrical discharge machining and electrolysis which is adopted as an auxiliary machining method to prepare a uniform textured structure. Micro electrical discharge machining electrodes can scan polycrystalline at high speed, widen a scanning range, and remarkably improve texturing efficiency. The prepared polycrystalline can form the uniform textured structure with a micro-nano scale so as to enhance light absorption and decrease reflectivity, and is suitable for industrial production. By the method, environmental pollution caused by chemical methods can be remarkably decreased, efficiency can be improved, and the reflectivity of the textured structure can be decreased.
Description
Technical field
The present invention relates to the polycrystalline silicon solar cell technology of preparing, particularly a kind of manufacturing approach of polycrystalline silicon solar battery suede.
Background technology
Solar energy is human inexhaustible renewable resource, also is one of clean energy resource that can directly utilize.Along with the progress of society, the energy crisis of face of mankind, problem of environmental pollution are serious day by day, and these problems have become restriction global economy development key place.It is the inexorable trend of Future Social Development that new forms of energy renewable, clean environment firendly are used in exploitation, and in the last few years, solar cell had caused that people pay close attention to widely.Solar cell has many significant advantages, and as pollution-free, the energy is available anywhere, advantages such as long service life.Can efficiently luminous energy be converted into the cleaning of electric energy, free of contamination renewable resource as a kind of, the application of solar cell gets into departments such as industry, agricultural, communication, household electrical appliance, electric power from military field, space industry.
But with regard to the current stage, the manufacture of solar cells cost is high, the solar absorptance limit further developing of solar cell.Therefore for how to reduce production costs, raise the efficiency, reduce the main target that reflectivity is still present solar cell research.Uniform surperficial suede structure has increased the absorption area of light, and incident light is repeatedly reflected on the surface, thereby improves solar absorption efficient greatly, has reduced the reflection of light rate.For polysilicon, its material manufacture is easy, practices thrift power consumption, and total production cost is lower.And along with the production technology of polysilicon constantly makes progress, its cost is also far below monocrystalline silicon.Therefore utilize reasonable method to make the uniform suede structure of polysilicon and can effectively reduce production cost, satisfy existing demand solar cell.
Existing surface wool manufacturing method has technology such as chemical corrosion, electrochemical corrosion, mechanical carving groove, ion etching.The mechanical carving groove technology, though technology is simple, efficient is low, desired silicon wafer thickness is not suitable for the manufacturing of solar cell.Ion etching, complex process, Production Time is long, and complex equipments is expensive, is not suitable for suitability for industrialized production.Chemical corrosion is to make the more general a kind of method of solar cell silicon wafer suede structure at present, though production efficiency is high, is difficult to obtain uniform suede structure, and is low to the sunlight anti-reflection efficiency, and shortcoming such as the waste liquid that produces is many, and is big for environment pollution.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency that prior art exists; A kind of manufacturing approach of polycrystalline silicon solar battery suede is provided; The preparation process is simple, convenient, be easy to realize suitability for industrialized production; Its sweep limits is big, scanning is even, be easy to control, can obviously improve making herbs into wool efficient, can obtain the suede structure of micro-nano-scale.
The object of the invention realizes through following proposal:
A kind of manufacturing approach of polycrystalline silicon solar battery suede; Adopt fine electric spark electrolysis Compound Machining polysilicon surface; When spark discharge makes suede structure, adopt electrolysis as assistance processing method,, comprise the steps: to obtain uniform suede structure
(1) prepares polysilicon chip, metal dust, clean polysilicon chip;
(2) prepare one evenly be furnished with magnet aluminium chassis, the electrode axis of electric spark machine tool is connected on the aluminium chassis; Said aluminium chassis is connected with the electrode axis of electric spark machine tool through sleeve, and said aluminium chassis is cross, hexagon, circular or annular.
(3) polysilicon chip is fixed on the corrosion resistant plate that is connected to power supply; The parallel placement of aluminium chassis with polysilicon chip, during work, aluminium chassis rotation and translation scan crystal silicon sheet; Small metal dust is adsorbed on the aluminium chassis through magnet; These minute metallic powder as microelectrode, produce fine electric spark, along with the generation of sparkover between aluminium chassis and polysilicon chip in the course of processing; In compound working solution, produce the high-temperature electrochemistry effect, thereby realize that the polysilicon chip electric spark and electrolysis is to make the suede structure of uniform micro-nano-scale;
(4) behind the completion polysilicon chip matte, clean with deionized water, oven dry makes polycrystalline silicon solar battery suede.
Said metal dust is the alloy powder of micro-nano-scale, and preferred billon powder is iron-based or Co-based alloy powder.
The present invention has following advantage and effect with respect to prior art:
The compound making herbs into wool of fine electric spark electrolysis that 1 the present invention adopts, can directly obtain desirable polycrystalline silicon suede structure, simple, convenient, be easy to realize suitability for industrialized production.
2 the present invention adopt the aluminium chassis of even arrangement of magnets to be connected with the electrode axis of electric spark machine tool and are used, and its sweep limits is big, and sweep speed is fast, and scanning evenly is easy to control, can obviously improve making herbs into wool efficient.
3 the present invention are when work, and the metal dust of micro/nano level is adsorbed on the aluminium chassis of even arrangement of magnets, and these micro-nano metal dusts as microelectrode, produce fine electric spark to make uniform suede structure in the course of processing.The microelectrode that constitutes of detailed rules and regulations is many more more for metal dust, and the polycrystalline silicon suede effect that makes is good more.
Description of drawings
Fig. 1 is the aluminium chassis and the polysilicon chip relative position sketch map of the even arrangement of magnets of the present invention;
Fig. 2 is the even suede structure light path of a polysilicon of the present invention sketch map;
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is done further explain, but execution mode of the present invention is not limited thereto.
Embodiment
By shown in Figure 1; The manufacturing approach of polycrystalline silicon solar battery suede of the present invention adopts fine electric spark electrolysis Compound Machining polysilicon surface, when spark discharge makes suede structure, adopts electrolysis as assistance processing method; To obtain uniform suede structure, comprise the steps:
(1) prepares polysilicon chip 3, metal dust, clean polysilicon chip 3;
(2) prepare one evenly be furnished with magnet aluminium chassis 2, the electrode axis 1 of electric spark machine tool is connected on the aluminium chassis 2; Said aluminium chassis 2 can be connected (not shown) with electrode axis 1 through sleeve, and said aluminium chassis 2 is cross, hexagon, circular or annular.
(3) polysilicon chip 3 is fixed on (not shown) on the corrosion resistant plate that is connected to power supply; Aluminium chassis 2 and polysilicon chip 3 parallel placements, during work, aluminium chassis 2 rotation and translation scan crystal silicon sheets; Small metal dust is adsorbed on the aluminium chassis 2 through magnet; These minute metallic powder as microelectrode, produce fine electric spark, along with the generation of sparkover between aluminium chassis 2 and polysilicon chip 3 in the course of processing; In compound working solution, produce the high-temperature electrochemistry effect, thereby realize that polysilicon electricity sheet electric spark and electrolysis is to make the suede structure of uniform micro-nano-scale; The microelectrode that constitutes of detailed rules and regulations is many more more for metal dust, and it is good more to make polysilicon chip matte effect.
(4) behind the matte of completion polysilicon chip 3, clean with deionized water, oven dry makes polycrystalline silicon solar battery suede.
Said metal dust is the alloy powder of micro-nano-scale, and this billon powder preferably adopts iron-based or Co-based alloy powder.
Can obtain having the polycrystalline silicon solar cell of matte through said method.The prepared polysilicon of the present invention can form the suede structure of uniform micro-nano-scale, increases the absorption to light, reduces reflectivity, is suitable for suitability for industrialized production.The surface wool manufacturing method that this method provides can significantly reduce the pollution of chemical method to environment, raises the efficiency, and reduces the matte reflectivity.
As stated, just can realize the present invention preferably.
The foregoing description is merely preferred implementation of the present invention; But execution mode of the present invention is not restricted to the described embodiments; Other are any not to deviate from change, the modification done under spirit of the present invention and the principle, substitute, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the manufacturing approach of a polycrystalline silicon solar battery suede is characterized in that adopting fine electric spark electrolysis Compound Machining polysilicon surface, when spark discharge makes suede structure, adopts electrolysis as assistance processing method, to obtain uniform suede structure.
2. the manufacturing approach of polycrystalline silicon solar battery suede according to claim 1 is characterized in that comprising the steps:
(1) prepares polysilicon chip, metal dust, clean polysilicon chip;
(2) prepare one evenly be furnished with magnet aluminium chassis, the electrode axis of electric spark machine tool is connected on the aluminium chassis;
(3) polysilicon chip is fixed on the corrosion resistant plate that is connected to power supply; The parallel placement of aluminium chassis with polysilicon chip, during work, aluminium chassis rotation and translation scan crystal silicon sheet; Small metal dust is adsorbed on the aluminium chassis through magnet; These minute metallic powder as microelectrode, produce fine electric spark, along with the generation of sparkover between aluminium chassis and polysilicon chip in the course of processing; In compound working solution, produce the high-temperature electrochemistry effect, thereby realize that the polysilicon electric spark and electrolysis is to make the suede structure of uniform micro-nano-scale;
(4) behind the completion polysilicon chip matte, clean with deionized water, oven dry makes polycrystalline silicon solar battery suede.
2, the manufacturing approach of polycrystalline silicon solar battery suede according to claim 2 is characterized in that said metal dust is the alloy powder of micro-nano-scale.
3. the manufacturing approach of polycrystalline silicon solar battery suede according to claim 2 is characterized in that said billon powder is iron-based or Co-based alloy powder.
4. the manufacturing approach of polycrystalline silicon solar battery suede according to claim 2; It is characterized in that said aluminium chassis is connected with the electrode axis of electric spark machine tool through sleeve; Said aluminium chassis is cross, hexagon, circular or annular, and magnet is arranged on aluminium chassis inside uniformly.
5. according to the manufacturing approach of each described polycrystalline silicon solar battery suede in the claim 1～5, resulting polycrystalline silicon solar cell with matte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104390563A CN102509749B (en) | 2011-12-22 | 2011-12-22 | Texturing method for polycrystalline solar cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104390563A CN102509749B (en) | 2011-12-22 | 2011-12-22 | Texturing method for polycrystalline solar cell |
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| Publication Number | Publication Date |
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| CN102509749A true CN102509749A (en) | 2012-06-20 |
| CN102509749B CN102509749B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104390563A Expired - Fee Related CN102509749B (en) | 2011-12-22 | 2011-12-22 | Texturing method for polycrystalline solar cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711247A (en) * | 2016-11-30 | 2017-05-24 | 无锡中硅新材料股份有限公司 | Apparatus and method for manufacturing pile face of silicon chip surface, and pile-face solar battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919514A (en) * | 2006-09-18 | 2007-02-28 | 南京航空航天大学 | Spraying liquid bunch electrolysis-laser composite processing method and apparatus thereof |
| CN101101937A (en) * | 2007-08-07 | 2008-01-09 | 南京航空航天大学 | Integrated processing method for cotton cutting of solar silicon and its device |
| CN201900348U (en) * | 2010-12-21 | 2011-07-20 | 中国工程物理研究院激光聚变研究中心 | Fine electric spark particle adsorption device |
| CN102189490A (en) * | 2011-03-30 | 2011-09-21 | 江苏艾德太阳能科技有限公司 | Mechanical texturing method of monocrystalline wafer for solar cell |
| KR101088383B1 (en) * | 2010-12-06 | 2011-12-01 | 주식회사 신성솔라에너지 | Bifacial photovoltaic solar cell manufacturing method using printing method, and bifacial photovoltaic solar cell of the same |
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2011
- 2011-12-22 CN CN2011104390563A patent/CN102509749B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919514A (en) * | 2006-09-18 | 2007-02-28 | 南京航空航天大学 | Spraying liquid bunch electrolysis-laser composite processing method and apparatus thereof |
| CN101101937A (en) * | 2007-08-07 | 2008-01-09 | 南京航空航天大学 | Integrated processing method for cotton cutting of solar silicon and its device |
| KR101088383B1 (en) * | 2010-12-06 | 2011-12-01 | 주식회사 신성솔라에너지 | Bifacial photovoltaic solar cell manufacturing method using printing method, and bifacial photovoltaic solar cell of the same |
| CN201900348U (en) * | 2010-12-21 | 2011-07-20 | 中国工程物理研究院激光聚变研究中心 | Fine electric spark particle adsorption device |
| CN102189490A (en) * | 2011-03-30 | 2011-09-21 | 江苏艾德太阳能科技有限公司 | Mechanical texturing method of monocrystalline wafer for solar cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711247A (en) * | 2016-11-30 | 2017-05-24 | 无锡中硅新材料股份有限公司 | Apparatus and method for manufacturing pile face of silicon chip surface, and pile-face solar battery |
| CN106711247B (en) * | 2016-11-30 | 2018-05-04 | 无锡中硅新材料股份有限公司 | A kind of manufacture device of the matte of silicon chip surface, manufacture method and matte solar cell |
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| CN102509749B (en) | 2013-12-11 |
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