CN102586888A - Non-alcoholic monocrystalline silicon flock making additive - Google Patents
Non-alcoholic monocrystalline silicon flock making additive Download PDFInfo
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- CN102586888A CN102586888A CN2012100691829A CN201210069182A CN102586888A CN 102586888 A CN102586888 A CN 102586888A CN 2012100691829 A CN2012100691829 A CN 2012100691829A CN 201210069182 A CN201210069182 A CN 201210069182A CN 102586888 A CN102586888 A CN 102586888A
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- making herbs
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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 provides relates to the technical field of production of crystalline silicon solar batteries, in particular to a non-alcoholic monocrystalline silicon flock making additive. The non-alcoholic monocrystalline silicon flock making additive consists of citric acid (sodium citrate), sodium dodecyl benzene sulfonate and deionized water. When the non-alcoholic monocrystalline silicon flock making additive is applied to manufacturing of suede of a monocrystalline wafer, uniform, thin and dense suede pyramid can be obtained without using alcohol such as isopropanol or ethanol, so the flock manufacturing cost can be reduced, environmental pollution caused by the alcohol is avoided, the process of the crystalline silicon solar battery is stable, and good practical value is achieved.
Description
Technical field:
The present invention relates to the technical field that crystal-silicon solar cell is produced, be specifically related to a kind of no pure silicon single crystal making herbs into wool additive.
Background technology:
Sun power is a kind of cleaning, sustainable energy; Solar photovoltaic technology then is the important channel that utilizes sun power; It not only can be converted into electric energy with sun power, and no any mechanical rotation or mobile in the switching process, also can not emit gas and smell; Therefore, obtained vigorously supporting of countries in the world governments.And crystal-silicon solar cell is the leading role in photovoltaic power generation technology field.Up to the present, crystal-silicon solar cell occupies more than 90% of whole photovoltaic market.Yet the important bottleneck that the restricting current crystal-silicon solar cell is extensively popularized is that cost of electricity-generating is too high, compares with traditional thermal power generation still not possess competitive power.Therefore, the developing direction of crystal-silicon solar cell is to reduce cost and improve photoelectric transformation efficiency.And the raising photoelectric transformation efficiency in fact also is the cost of electricity-generating that reduces solar cell.For example, suppose that the crystal-silicon solar cell efficiency of conversion brings up to 17% by 15%, then the actual power amount can improve 13.5%, and corresponding cost of electricity-generating can reduce by 13.5%, and the visible efficiency of conversion that improves solar cell is to reduce the very effective method of its cost of electricity-generating.
And a kind of effective way that improves the crystal-silicon solar cell photoelectric transformation efficiency is to reduce the surface albedo of silicon chip.The crystal-silicon solar cell of suitability for industrialized production adopts the way of wet etching to make matte at silicon chip surface usually, to reduce the silicon chip surface reflectivity, improves the photoelectric transformation efficiency of solar cell.The matte of monocrystalline silicon piece is made and is adopted the aqueous solution of sodium hydroxide or Pottasium Hydroxide to corrode usually, and adopts Virahol or ethanol as auxiliary, to eliminate the bubble hydrogen that produces in the reaction.Yet Virahol (or ethanol) is not a good making herbs into wool auxiliary.At first; The usage quantity of Virahol big (generally accounting for more than 5% of etchant solution TV) in the making herbs into wool process; And constantly volatilization of Virahol (or ethanol), thereby need constantly to add, this makes Virahol (or ethanol) become the prime cost source of leather producing process.Secondly, Virahol (or ethanol) is not the chemical reagent of environmental protection, and it is deleterious, and has offensive odour.Moreover; The making herbs into wool of adopting Virahol (or ethanol) to come the assisted single-crystal silicon chip; Often obtain bigger and uneven matte pyramid easily, the contact resistance that this increases the metal electrode of solar cell easily causes the technology instability of crystal-silicon solar cell and the fluctuation of photoelectric transformation efficiency.More than these weak points make Virahol (or ethanol) will withdraw from the manufacturing field of crystal-silicon solar cell gradually.In the matte making processes of crystal-silicon solar cell; If being arranged, a kind of chemical reagent of environmental protection can under very low dosage, just can eliminate the bubble hydrogen that produces in the reaction well; Then can not use Virahol (or ethanol) fully; So not only the technology cost can be reduced, the environmental pollution of alcohols can also be avoided.
Summary of the invention:
The purpose of this invention is to provide a kind of no pure silicon single crystal making herbs into wool additive, when it is applied to the matte making of monocrystalline silicon piece, need not use alcohols such as Virahol or ethanol; And can obtain even, tiny, intensive matte pyramid; Therefore, can reduce the making herbs into wool cost, exempt the environmental pollution that alcohols brings; Help the process stabilizing of crystal-silicon solar cell, have good practical values.
In order to solve the existing problem of background technology, the present invention adopts following technical scheme: the formula constituent that does not have pure silicon single crystal making herbs into wool additive is Hydrocerol A (or Trisodium Citrate), X 2073 and deionized water.
Described Hydrocerol A (or Trisodium Citrate) concentration is between 1.0wt%-5.0wt%, and described X 2073 concentration is between 0.1wt%-5.0wt%.
When described no pure silicon single crystal making herbs into wool additive is applied to the matte making of monocrystalline silicon piece, need not use alcohols such as Virahol or ethanol.
When described no pure silicon single crystal making herbs into wool additive is applied to the matte making of monocrystalline silicon piece, can obtain even, tiny, intensive matte pyramid, the pyramid size is between 1-5 μ m.
When described no pure silicon single crystal making herbs into wool additive is applied to the matte making of monocrystalline silicon piece, need it be joined in the corrosive fluid of silicon chip, the volume ratio of its shared corrosive fluid is between the 0.1v/v%-2.0v/v%.
When described no pure silicon single crystal making herbs into wool additive was applied to the matte making of monocrystalline silicon piece, the corrosive fluid of silicon chip was the aqueous solution of sodium hydroxide or Pottasium Hydroxide, and the concentration of sodium hydroxide (potassium) is between 0.5wt%-2.0wt%.
When described no pure silicon single crystal making herbs into wool additive was applied to the matte making of monocrystalline silicon piece, the temperature of corrosive fluid was between 70 ℃-85 ℃, and the etching time of silicon chip is between 15-30 minute.
When described no pure silicon single crystal making herbs into wool additive is applied to the matte making of monocrystalline silicon piece in enormous quantities, after every batch of making herbs into wool, can replenish in right amount or not replenish according to the pyramidal quality situation of matte.
When described no pure silicon single crystal making herbs into wool additive is applied to the matte making of monocrystalline silicon piece in enormous quantities, after every batch of making herbs into wool, need in corrosive fluid, to replenish sodium hydroxide or Pottasium Hydroxide in right amount.
The present invention has adopted new chemical formulation; X 2073 in the prescription is a kind of AS; Have excellent wetting, infiltration, emulsification, dispersion and detergency ability; It just can eliminate the bubble hydrogen that produces in the making herbs into wool process well under very low dosage, and it is a kind of chemical reagent of environmental protection, is widely used among the home washings articles for use.Therefore, when the present invention is applied to the matte making of monocrystalline silicon piece, need use alcohols such as Virahol or ethanol, thereby can reduce the making herbs into wool cost, exempt the environmental pollution that alcohols brings, have good practical values.
Description of drawings:
Accompanying drawing is the scanning electron microscope image of embodiment instance one resulting monocrystalline silicon suede.
Embodiment:
This embodiment is to adopt following technical scheme: the formula constituent that does not have pure silicon single crystal making herbs into wool additive is Hydrocerol A (or Trisodium Citrate), X 2073 and deionized water; When it is applied to the matte making of monocrystalline silicon piece, need not use alcohols such as Virahol or ethanol.
This embodiment specific examples is following:
Instance one, employing Hydrocerol A, X 2073 and deionized water are mixed with no pure silicon single crystal making herbs into wool additive, and citric acid concentration is 3wt%, and X 2073 concentration is 2wt%.To not have pure silicon single crystal making herbs into wool additive then and join in the aqueous solution of sodium hydroxide that concentration is 1.2wt%, the volume ratio that does not have the shared total solution of pure silicon single crystal making herbs into wool additive is 1.0v/v%.Then this solution being heated to 80 ℃, is that 125mm * 125mm, thickness are about 200 microns monocrystalline silicon piece and put into solution and corrode making herbs into wool with area again, and etching time is 20 minutes, then with silicon chip take out, clean, oven dry, observe again.The matte pyramid of gained silicon chip is shown in the electron microscope image in the accompanying drawing.Can be known that by accompanying drawing the matte pyramid of gained is even, tiny, intensive, the pyramid size is about 3 μ m.
Instance two, employing Trisodium Citrate, X 2073 and deionized water are mixed with no pure silicon single crystal making herbs into wool additive, and sodium citrate concentration is 4wt%, and X 2073 concentration is 1.8wt%.To not have pure silicon single crystal making herbs into wool additive then and join in the aqueous solution of sodium hydroxide that concentration is 1.2wt%, the volume ratio that does not have the shared total solution of pure silicon single crystal making herbs into wool additive is 1.0v/v%.Then this solution being heated to 80 ℃, is that 125mm * 125mm, thickness are about 200 microns monocrystalline silicon piece and put into solution and corrode making herbs into wool with area again, and etching time is 20 minutes, then with silicon chip take out, clean, oven dry, observe again.
Instance three, employing Trisodium Citrate, X 2073 and deionized water are mixed with no pure silicon single crystal making herbs into wool additive, and sodium citrate concentration is 5wt%, and X 2073 concentration is 1.5wt%.To not have pure silicon single crystal making herbs into wool additive then and join in the aqueous solution of sodium hydroxide that concentration is 1.2wt%, the volume ratio that does not have the shared total solution of pure silicon single crystal making herbs into wool additive is 1.0v/v%.Then this solution being heated to 80 ℃, is that 125mm * 125mm, thickness are about 200 microns monocrystalline silicon piece and put into solution and corrode making herbs into wool with 200 areas again, and etching time is 20 minutes, then with silicon chip take out, clean, oven dry.Behind hydrogen make-up sodium oxide 150 grams, put into 200 monocrystalline silicon pieces again and carry out making herbs into wool in the solution.Repeat above process, until making herbs into wool 30 endorsement crystal silicon sheets (200 every batch).
Above practical implementation instance one, instance two and instance three have following beneficial effect:
When the matte that, adopts no pure silicon single crystal making herbs into wool additive of the present invention to carry out monocrystalline silicon piece is made, need not use alcohols such as Virahol or ethanol, can reduce the making herbs into wool cost, have good practical values.
When the matte that two, adopts no pure silicon single crystal making herbs into wool additive of the present invention to carry out monocrystalline silicon piece is made, can avoid the environmental pollution of alcohols, have good practical values.
When the matte that three, adopts no pure silicon single crystal making herbs into wool additive of the present invention to carry out monocrystalline silicon piece is made, can obtain even, tiny, intensive matte pyramid, help the process stabilizing of crystal-silicon solar cell, have good practical values.
Claims (9)
1. a no pure silicon single crystal making herbs into wool additive is characterized in that its formula constituent is: Hydrocerol A (or Trisodium Citrate), X 2073 and deionized water.
2. a kind of no pure silicon single crystal making herbs into wool additive according to claim 1 is characterized in that described Hydrocerol A (or Trisodium Citrate) concentration between 1.0wt%-5.0wt%, and described X 2073 concentration is between 0.1wt%-5.0wt%.
3. a kind of no pure silicon single crystal making herbs into wool additive according to claim 1 when it is characterized in that its matte that is applied to monocrystalline silicon piece is made, need not use alcohols such as Virahol or ethanol.
4. a kind of no pure silicon single crystal making herbs into wool additive according to claim 1 when it is characterized in that its matte that is applied to monocrystalline silicon piece is made, can obtain even, tiny, intensive matte pyramid, and the pyramid size is between 1-5 μ m.
5. a kind of no pure silicon single crystal making herbs into wool additive according to claim 1; When it is characterized in that its matte that is applied to monocrystalline silicon piece is made; Need it be joined in the corrosive fluid of silicon chip, the volume ratio of its shared corrosive fluid is between the 0.1v/v%-2.0v/v%.
6. a kind of no pure silicon single crystal making herbs into wool additive according to claim 5; When it is characterized in that its matte that is applied to monocrystalline silicon piece is made; The corrosive fluid of silicon chip is the aqueous solution of sodium hydroxide or Pottasium Hydroxide, and the concentration of sodium hydroxide (potassium) is between 0.5wt%-2.0wt%.
7. a kind of no pure silicon single crystal making herbs into wool additive according to claim 5, when it is characterized in that its matte that is applied to monocrystalline silicon piece is made, the temperature of corrosive fluid is between 70 ℃-85 ℃, and the etching time of silicon chip is between 15-30 minute.
8. a kind of no pure silicon single crystal making herbs into wool additive according to claim 1 when it is characterized in that its matte that is applied to monocrystalline silicon piece in enormous quantities is made, after every batch of making herbs into wool, can replenish or not replenish according to the pyramidal situation of matte in right amount.
9. a kind of no pure silicon single crystal making herbs into wool additive according to claim 1 when it is characterized in that its matte that is applied to monocrystalline silicon piece in enormous quantities is made, after every batch of making herbs into wool, needs in corrosive fluid, to replenish sodium hydroxide or Pottasium Hydroxide in right amount.
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| CN2012100691829A CN102586888A (en) | 2012-03-15 | 2012-03-15 | Non-alcoholic monocrystalline silicon flock making additive |
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| CN2012100691829A CN102586888A (en) | 2012-03-15 | 2012-03-15 | Non-alcoholic monocrystalline silicon flock making additive |
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| CN103668467A (en) * | 2013-12-20 | 2014-03-26 | 常州时创能源科技有限公司 | Polycrystalline silicon wafer texturization additive and application thereof |
| CN104120495A (en) * | 2014-07-10 | 2014-10-29 | 上海应用技术学院 | A texturing liquid used for monocrystalline silicon surface texturing and a preparing method thereof |
| WO2015032153A1 (en) * | 2013-09-04 | 2015-03-12 | 常州时创能源科技有限公司 | Monocrystalline silicon wafer texturizing additive and use thereof |
| CN104651949A (en) * | 2015-02-11 | 2015-05-27 | 常州君合科技股份有限公司 | Multi-crystalline silicon wafer texturization additive |
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2012
- 2012-03-15 CN CN2012100691829A patent/CN102586888A/en active Pending
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Application publication date: 20120718 |