CN102877135A - Additive for alkali environment-protecting type no-alcoholic felting liquid of mono-crystal silicone chip and using method thereof - Google Patents
Additive for alkali environment-protecting type no-alcoholic felting liquid of mono-crystal silicone chip and using method thereof Download PDFInfo
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- CN102877135A CN102877135A CN2012103306185A CN201210330618A CN102877135A CN 102877135 A CN102877135 A CN 102877135A CN 2012103306185 A CN2012103306185 A CN 2012103306185A CN 201210330618 A CN201210330618 A CN 201210330618A CN 102877135 A CN102877135 A CN 102877135A
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Abstract
The invention provides an additive for an alkali environment-protecting type no-alcoholic felting liquid of a mono-crystal silicone chip, which comprises the following components in percent by weight: 0.05 to 1 percent of protein, 0.01 to 1 percent of detergent, 0.001 to 0.003 percent of vitamin, donkey-hide gelatin or tea polyphenol or the combination thereof, and the balance of water. After adopting the additive for the alkali environment-protecting type no-alcoholic solution of the mono-crystal silicone chip and the using method thereof, compared with the condition without the additive for an alkali environment-protecting type no-alcoholic felting liquid of a mono-crystal silicone chip, the felt temperature can be decreased, no isopropanol is required to be used, the felting time is shortened, and the felting effect is obviously improved.
Description
[technical field]
The invention relates to silicon chip of solar cell and make the field, a kind of environment-friendly type is without additive and the using method thereof of pure alkali wool making solution for monocrystalline silicon pieces in particularly making about silicon chip.
[background technology]
In solar battery mono-crystal sheet preparation process, for performance and the electricity conversion that improves solar cell, silicon chip surface must carry out roughened, forms diffuse-reflectance so that be incident on the sunlight of silicon face.On the one hand, prolong light path, thereby increased the specific absorption of silicon chip to infrared light; On the other hand, so that more photon is being absorbed near near the zone the PN junction, produce photo-generated carrier, these photo-generated carriers are easier to be collected, because built in field is arranged near the PN junction, has therefore increased the collection effciency of photo-generated carrier.The normally chemical alkaline corrosion of the roughened of monocrystalline silicon sheet surface, the matte of formation pyramid shape.Alkaline corrosion liquid has different erosion rates to the different crystal faces of silicon chip, and is slower to the corrosion of (111) crystal face, very fast to the corrosion of (100) crystal face.Therefore, when utilizing alkaline corrosion liquid that silicon chip is corroded, because this anisotropic corrosive property can form pyramid structure at silicon chip surface.
Effectively suede structure can so that the incident sunlight carries out Multi reflection and refraction at silicon chip surface, change the working direction of incident light in silicon.The matte of monocrystalline silicon battery normally utilizes alkaline corrosion liquid (such as KOH, NaOH etc.) that silicon chip surface is corroded and forms.
The making herbs into wool effect is mainly reflected in matte (pyramid) size and uniformity coefficient, the matte that general technology is done (pyramid) is of a size of 6～10 μ m, uniformity coefficient is poor, and the use additive of this patent can make matte (pyramid) size reach 1～3 μ m, size evenness is good, does not have large pyramid.The pyramid size is little to have good effect to the battery subsequent technique.
At present, Woolen-making liquid commonly used is comprised of NaOH, Na2SiO4, Virahol, deionized water etc. in the industrial production.The making herbs into wool effect of this Woolen-making liquid is not very good, and the problem of existence comprises: pyramidal size is larger, is generally 10～15 μ m; The silicon slice corrosion amount is larger; Making herbs into wool stability is bad; The silicon chip surface homogeneity is bad after the making herbs into wool, and soil removability is poor, often can see obvious finger-marks, hickie etc.Simultaneously, because the inflammable and explosive volatile hazardous substance Virahol of a large amount of uses, so that the raw materials for production cost, transportation cost, carrying cost greatly increases.Simultaneously Virahol is volatile, and the workshop has explosion hazard, and personnel can cause various occupational illness owing to suck a large amount of Virahols, and long-term the suction is when serious even can cause comprising the various persistent ailments of lung cancer and leukemia.And, because corrosive fluid uses Virahol in a large number, cause environmental pollution, need to carry out aftertreatment, and then increase production cost.Therefore, if can replace with the making herbs into wool additive without pure environmental protection the existing pure making herbs into wool additive that has, will have great economy, environmental protection, the meaning of labour protection and general health.
[summary of the invention]
The object of the present invention is to provide a kind of environmental protection for silicon single crystal alkalescence Woolen-making liquid without pure making herbs into wool additive.
Another object of the present invention is to provide a kind of environmental protection without pure silicon single crystal alkalescence Woolen-making liquid.
A further object of the present invention is to provide a kind of environmental protection of using additive to carry out the method for fine-hair maring using monocrystalline silicon slice without pure alkali wool making solution for monocrystalline silicon pieces.
A kind of for the additive of silicon single crystal alkalescence without pure Woolen-making liquid for reaching aforementioned purpose the present invention, its component that comprises is: weight percent is the protein of 0.05-1%, weight percent is the washing composition of 0.01-1%, and weight percent is to get a kind of or their combination and the water of surplus in the VITAMIN, donkey-hide gelatin, tea-polyphenol of 0.001%-0.003%.
According to one embodiment of present invention, described protein be from contain protein more than 85% Edible protein flour or food foaming agent choose a kind of or their combination.
According to one embodiment of present invention, described washing composition is to choose at least wherein a kind of or their combination from family expenses anion surfactant, family expenses cats product, family expenses neutral surface active agent.
According to one embodiment of present invention, described water is deionized water.
For reaching aforementioned another purpose, the present invention is a kind of to process the compound method of the Wool-making agent of usefulness for monocrystalline silicon sheet surface, comprising:
(1) is that the NaOH of 0.5-10% is dissolved in the deionized water with weight percentage, obtains alkalescence without pure Woolen-making liquid;
(2) will obtain being added with the Woolen-making liquid of additive such as the alkalescence in the described additive adding step of claim 1-4 (1) without in the pure Woolen-making liquid, wherein said additive is 2-5 with alkaline weight ratio without pure Woolen-making liquid: 100.
For reaching an aforementioned again purpose, a kind of fine-hair maring using monocrystalline silicon slice method of the present invention, it comprises:
(1) is that the NaOH of 0.5-10% is dissolved in the deionized water with weight percentage, obtains alkalescence without pure Woolen-making liquid;
(2) will obtain being added with the Woolen-making liquid of additive such as the alkalescence in the described additive adding step of claim 1-4 (1) without in the pure Woolen-making liquid, wherein said additive is 2-5 with alkaline weight ratio without pure Woolen-making liquid: 100;
(3) then monocrystalline silicon piece is immersed in and carries out making herbs into wool in the Woolen-making liquid that is added with additive, during making herbs into wool, temperature is 70-90 ℃, and the making herbs into wool time is 720-1200s.
The invention has the advantages that: after adopting this additive and using method, compare when not adding additive, can reduce the making herbs into wool temperature, shorten the making herbs into wool time, and the making herbs into wool effect is significantly improved.After adopting this additive and using method to carry out silicon chip surface making herbs into wool, the pyramid size that forms at silicon chip surface is less than 2 μ m, the whole complexion of silicon chip pool evenly, average reflectance is lower than 15%, the amount of silicon that is corroded is less than 6%.Matte pyramid size is more tiny, and it is more even to distribute, and has reduced significantly the reflectivity of silicon chip.The cell piece that finally obtains is also had useful effect, improved the yield rate of cell piece, promoted the short-circuit current of cell piece and increased the packing factor of cell piece, improved the photoelectric transformation efficiency of solar battery sheet.In addition, catalyzer nontoxicity of the present invention, non-corrosiveness, nonirritant, without burning and explosion hazard, to human body and environment without harm; And the configuration of catalyzer and use technique are simple, and equipment is cheap, good reproducibility.
[description of drawings]
The comparison diagram of the scanning electron microscope orthographic plan of the silicon chip that Fig. 1 makes for the scanning electron microscope orthographic plan of the silicon chip surface matte that uses alkalescence of the present invention and obtain without the additive of pure Woolen-making liquid and the alkaline solution processed of tradition.
Fig. 2 is that the silicon chip that the additive of the application of the invention is made is made battery behind efficiency turnover ratio comparison diagram, wherein dotted line is to use the battery conversion efficiency distribution plan that obtains after the IPA making herbs into wool among the figure, and the histogram of entity is the battery conversion efficiency distribution plan that uses additive of the present invention to obtain.
[embodiment]
Alleged " embodiment " or " embodiment " refer to be contained in special characteristic, structure or the characteristic at least one implementation of the present invention herein.Different local in this manual " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.
The invention provides a kind of environmental protection for silicon single crystal alkalescence Woolen-making liquid without pure making herbs into wool additive, the component that wherein comprises is: weight percent is the protein of 0.05-1%, weight percent is the washing composition of 0.01-1%, and weight percent is to get a kind of or their combination and the water of surplus in the VITAMIN, donkey-hide gelatin, tea-polyphenol of 0.001%-0.003%.
Wherein protein can be from contain protein more than 85% Edible protein flour or food foaming agent choose a kind of or their group.
Wherein washing composition can be to choose at least wherein a kind of or their combination from family expenses anion surfactant, family expenses cats product, family expenses neutral surface active agent, for example, can be the liquid dishwashing sanitising agent (Liquid Dishwash Detergent) that Dow (Tao Shi) company produces.
Preferably deionized water of water wherein.
The present invention is used for the compound method that monocrystalline silicon sheet surface is processed the Wool-making agent of usefulness, comprising:
(1) is that the NaOH of 0.5-10% is dissolved in the deionized water with weight percentage, obtains alkalescence without pure Woolen-making liquid;
(2) aforementioned additive of the present invention is added alkalescence in the step (1) without in the pure Woolen-making liquid, obtain Woolen-making liquid of the present invention, the weight ratio of wherein said additive and Woolen-making liquid is 2-5: 100.
The present invention also provides a kind of fine-hair maring using monocrystalline silicon slice method, and it comprises:
(1) is that the NaOH of 0.5-10% is dissolved in the deionized water with weight percentage, obtains alkalescence without pure Woolen-making liquid;
(2) aforementioned additive of the present invention is added alkalescence in the step (1) without in the pure Woolen-making liquid, obtain Woolen-making liquid of the present invention, the weight ratio of wherein said additive and Woolen-making liquid is 2-5: 100;
(3) then monocrystalline silicon piece is immersed in and carries out making herbs into wool in the Woolen-making liquid that is added with additive, during making herbs into wool, temperature is 70-90 ℃, and the making herbs into wool time is 720-1200s.
Embodiment 1:
The configuration additive, get Edible protein flour 0.05 gram of protein more than 85%, get anion surfactant (washing composition a kind of) 0.01 gram, VITAMIN, donkey-hide gelatin, tea-polyphenol are respectively got 0.001 gram, and the deionized water of 99.939 grams, protein powder, washing composition, VITAMIN, donkey-hide gelatin, tea-polyphenol are dissolved in the deionized water, make the solution of 100 grams.
The configuration Woolen-making liquid is dissolved in 5 gram NaOH in the 995 gram deionized waters, to obtain 1000 gram alkalescence without pure Woolen-making liquid; Add 20 in 1000 gram alkalescence in without pure Woolen-making liquid and restrain additives.
The used for solar batteries monocrystalline silicon piece is immersed in carries out surface wool manufacturing in the Woolen-making liquid that is added with additive, the making herbs into wool temperature is 70 ℃, and the making herbs into wool time is 720s, finishes making herbs into wool.
Embodiment 2:
The configuration additive, get Edible protein flour 0.05 gram of protein more than 85%, get anion surfactant (washing composition a kind of) 0.01 gram, VITAMIN, donkey-hide gelatin, tea-polyphenol are respectively got 0.001 gram, and the deionized water of 99.939 grams, protein powder, washing composition, VITAMIN, donkey-hide gelatin, tea-polyphenol are dissolved in the deionized water, make the solution of 100 grams.
The configuration Woolen-making liquid is dissolved in 11 gram NaOH in the 989 gram deionized waters, to obtain 1000 gram alkalescence without pure Woolen-making liquid; Add 25 in 1000 gram alkalescence in without pure Woolen-making liquid and restrain additives.
The used for solar batteries monocrystalline silicon piece is immersed in carries out surface wool manufacturing in the Woolen-making liquid that is added with additive, the making herbs into wool temperature is 75 ℃, and the making herbs into wool time is 900s, finishes making herbs into wool.
Embodiment 3:
The configuration additive, take food product whipping agent 1 gram, get family expenses neutral surface active agent (washing composition a kind of) 1 gram, VITAMIN, donkey-hide gelatin, tea-polyphenol are respectively got 0.003 gram, and the deionized water of 97.997 grams, protein powder, washing composition, VITAMIN, donkey-hide gelatin, tea-polyphenol are dissolved in the deionized water, make the solution of 100 grams.
The configuration Woolen-making liquid is dissolved in 100 gram NaOH in the 900 gram deionized waters, to obtain 1000 gram alkalescence without pure Woolen-making liquid; Add 50 in 1000 gram alkalescence in without pure Woolen-making liquid and restrain additives.
The used for solar batteries monocrystalline silicon piece is immersed in carries out surface wool manufacturing in the Woolen-making liquid that is added with additive, the making herbs into wool temperature is 90 ℃, and the making herbs into wool time is 1200s, finishes making herbs into wool.
See also shown in Figure 1ly, Fig. 1 is the comparison diagram of the scanning electron microscope orthographic plan of the scanning electron microscope orthographic plan of the silicon chip surface matte that uses alkalescence of the present invention and obtain without the additive of pure Woolen-making liquid and the silicon chip that traditional alkaline Woolen-making liquid makes.The scanning electron microscope orthographic plan of the silicon chip that the scanning electron microscope orthographic plan of the silicon chip surface matte that obtains for the additive that uses alkaline Woolen-making liquid of the present invention of left side wherein, right side make for tradition alkalescence solution processed.Can see that according to Fig. 1 the pyramid size that forms by method making herbs into wool of the present invention is less, be approximately 1-2 μ m, and it is more even to distribute.In addition, the amount of silicon that is corroded is about 5.2%.
See also shown in Figure 2, Fig. 2 is that the silicon chip that the additive of the application of the invention is made is made battery behind efficiency turnover ratio comparison diagram, wherein dotted line is to use the battery conversion efficiency distribution plan that obtains after the IPA making herbs into wool among the figure, and the histogram of entity is the battery conversion efficiency distribution plan that uses additive of the present invention to obtain.Through comparing the battery that the battery conversion efficiency that adopts additive of the present invention to make makes significantly better than traditional etching method.
The invention has the advantages that: after adopting this additive and using method, compare when not adding additive, can reduce the making herbs into wool temperature, shorten the making herbs into wool time, and the making herbs into wool effect is significantly improved.After adopting this additive and using method to carry out silicon chip surface making herbs into wool, the pyramid size that forms at silicon chip surface is less than 2 μ m, the whole complexion of silicon chip pool evenly, average reflectance is lower than 15%, the amount of silicon that is corroded is less than 6%.Matte pyramid size is more tiny, and it is more even to distribute, and has reduced significantly the reflectivity of silicon chip.The cell piece that finally obtains is also had useful effect, improved the yield rate of cell piece, promoted the short-circuit current of cell piece and increased the packing factor of cell piece, improved the photoelectric transformation efficiency of solar battery sheet.In addition, catalyzer nontoxicity of the present invention, non-corrosiveness, nonirritant, without burning and explosion hazard, to human body and environment without harm; And the configuration of catalyzer and use technique are simple, and equipment is cheap, good reproducibility.
Above-mentioned explanation has fully disclosed the specific embodiment of the present invention.It is pointed out that and be familiar with the scope that any change that the person skilled in art does the specific embodiment of the present invention does not all break away from claims of the present invention.Correspondingly, the scope of claim of the present invention also is not limited only to previous embodiment.
Claims (6)
1. one kind is used for silicon single crystal alkalescence without the additive of pure Woolen-making liquid, it is characterized in that: its component that comprises is: weight percent is the protein of 0.05-1%, weight percent is the washing composition of 0.01-1%, and weight percent is to get a kind of or their combination and the water of surplus in the VITAMIN, donkey-hide gelatin, tea-polyphenol of 0.001%-0.003%.
2. as claimed in claim 1 for the silicon single crystal alkalescence additive without pure Woolen-making liquid, it is characterized in that: described protein be from contain protein more than 85% Edible protein flour or food foaming agent choose a kind of or their combination.
3. as claimed in claim 1 for the silicon single crystal alkalescence additive without pure Woolen-making liquid, it is characterized in that: described washing composition is to choose at least wherein a kind of or their combination from family expenses anion surfactant, family expenses cats product, family expenses neutral surface active agent.
4. as claimed in claim 1 for the additive of silicon single crystal alkalescence without pure Woolen-making liquid, it is characterized in that: described water is deionized water.
5. one kind is used for the compound method that monocrystalline silicon sheet surface is processed the Wool-making agent of usefulness, comprising:
(1) is that the NaOH of 0.5-10% is dissolved in the deionized water with weight percentage, obtains alkalescence without pure Woolen-making liquid;
(2) will obtain being added with the Woolen-making liquid of additive such as the alkalescence in the described additive adding step of claim 1-4 (1) without in the pure Woolen-making liquid, wherein said additive is 2-5 with alkaline weight ratio without pure Woolen-making liquid: 100.
6. fine-hair maring using monocrystalline silicon slice method, it comprises:
(1) is that the NaOH of 0.5-10% is dissolved in the deionized water with weight percentage, obtains alkalescence without pure Woolen-making liquid;
(2) will obtain being added with the Woolen-making liquid of additive such as the alkalescence in the described additive adding step of claim 1-4 (1) without in the pure Woolen-making liquid, wherein said additive is 2-5 with alkaline weight ratio without pure Woolen-making liquid: 100;
(3) then monocrystalline silicon piece is immersed in and carries out making herbs into wool in the Woolen-making liquid that is added with additive, during making herbs into wool, temperature is 70-90 ℃, and the making herbs into wool time is 720-1200s.
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Cited By (8)
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| CN103614778A (en) * | 2013-11-25 | 2014-03-05 | 英利能源（中国）有限公司 | Alcohol-free alkaline texturing solution for mono-crystalline silicon wafer, texturing method for mono-crystalline silicon wafer, solar cell and manufacturing method for solar cell |
| CN105113009A (en) * | 2015-08-21 | 2015-12-02 | 合肥中南光电有限公司 | Environment-friendly monocrystalline silicon piece texturing liquid and preparation method thereof |
| CN105133030A (en) * | 2015-08-25 | 2015-12-09 | 合肥中南光电有限公司 | Long-acting silicon wafer texture-etchant and preparation method therefor |
| CN105133026A (en) * | 2015-08-21 | 2015-12-09 | 合肥中南光电有限公司 | Low-damage monocrystalline silicon slice texturing solution and preparation method thereof |
| CN105133031A (en) * | 2015-08-25 | 2015-12-09 | 合肥中南光电有限公司 | Bamboo extraction solution silicon wafer texture-etchant and preparation method therefor |
| CN106024988A (en) * | 2016-07-26 | 2016-10-12 | 南京科乃迪科环保科技有限公司 | One-step wet black silicon preparation and surface treatment method |
| CN106222756A (en) * | 2016-09-30 | 2016-12-14 | 杭州飞鹿新能源科技有限公司 | Additive and application process thereof for diamond wire cutting fine-hair maring using monocrystalline silicon slice |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103614778A (en) * | 2013-11-25 | 2014-03-05 | 英利能源（中国）有限公司 | Alcohol-free alkaline texturing solution for mono-crystalline silicon wafer, texturing method for mono-crystalline silicon wafer, solar cell and manufacturing method for solar cell |
| CN105113009A (en) * | 2015-08-21 | 2015-12-02 | 合肥中南光电有限公司 | Environment-friendly monocrystalline silicon piece texturing liquid and preparation method thereof |
| CN105133026A (en) * | 2015-08-21 | 2015-12-09 | 合肥中南光电有限公司 | Low-damage monocrystalline silicon slice texturing solution and preparation method thereof |
| CN105133030A (en) * | 2015-08-25 | 2015-12-09 | 合肥中南光电有限公司 | Long-acting silicon wafer texture-etchant and preparation method therefor |
| CN105133031A (en) * | 2015-08-25 | 2015-12-09 | 合肥中南光电有限公司 | Bamboo extraction solution silicon wafer texture-etchant and preparation method therefor |
| CN106024988A (en) * | 2016-07-26 | 2016-10-12 | 南京科乃迪科环保科技有限公司 | One-step wet black silicon preparation and surface treatment method |
| CN106222756A (en) * | 2016-09-30 | 2016-12-14 | 杭州飞鹿新能源科技有限公司 | Additive and application process thereof for diamond wire cutting fine-hair maring using monocrystalline silicon slice |
| CN108221057A (en) * | 2018-01-18 | 2018-06-29 | 西安润威光电科技有限公司 | A kind of graphite oxide alkenyl crystal silicon flocking additive and preparation method and prepare the method for silicon solar battery pile face using it |
| CN108221057B (en) * | 2018-01-18 | 2020-05-08 | 西安润威光电科技有限公司 | Method for preparing silicon solar cell texture by using graphene oxide-based crystalline silicon texture making additive |
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