CN102154712A - Monocrystal silicon solar battery texture etching liquid and preparation method thereof - Google Patents
Monocrystal silicon solar battery texture etching liquid and preparation method thereof Download PDFInfo
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- CN102154712A CN102154712A CN 201110061452 CN201110061452A CN102154712A CN 102154712 A CN102154712 A CN 102154712A CN 201110061452 CN201110061452 CN 201110061452 CN 201110061452 A CN201110061452 A CN 201110061452A CN 102154712 A CN102154712 A CN 102154712A
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- Prior art keywords
- woolen
- making liquid
- silicon solar
- deionized water
- solar cell
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- 239000007788 liquid Substances 0.000 title claims abstract description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 37
- 239000010703 silicon Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims description 9
- 238000005530 etching Methods 0.000 title abstract 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000008367 deionised water Substances 0.000 claims abstract description 20
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003513 alkali Substances 0.000 claims abstract description 18
- 150000001299 aldehydes Chemical class 0.000 claims abstract description 15
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 claims description 4
- 239000010865 sewage Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract 4
- 235000008216 herbs Nutrition 0.000 description 17
- 210000002268 wool Anatomy 0.000 description 17
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 150000001298 alcohols Chemical class 0.000 description 4
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 4
- 238000007259 addition reaction Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention provides a monocrystal silicon solar battery texture etching liquid, comprising alkali, aldehydes, isopropanol and deionized water. Each liter of deionized water comprises 10-20g of alkali, 0.005-0.01L of aldehydes and 0.02-0.04L of isopropanol. The invention also provides a method for preparing the monocrystal silicon solar battery texture etching liquid, which comprises the following steps: adding deionized water to a texture etching tank and controlling the temperature of the deionized water to be 76-85 DEG C; adding alkali and fully blending; adding the aldehydes and fully blending; adding nickel and fully blending; and adding isopropanol and fully blending to get the texture etching liquid. The pyramide made after monocrystal silicon texture etching by the monocrystal silicon solar battery texture etching liquid is small in size, uniform in shape and low in subsequent sewage treatment cost.
Description
Technical field
The present invention relates to the monocrystaline silicon solar cell preparation field, be specifically related to Woolen-making liquid of monocrystaline silicon solar cell and preparation method thereof.
Background technology
Silicon single crystal making herbs into wool is about to monocrystalline silicon piece and puts into Woolen-making liquid, make the alkali generation chemical reaction in silicon chip and the Woolen-making liquid, because alkali has the anisotropic etch characteristic to silicon single crystal, promptly on the different crystal orientations of silicon chip, the corrosion speed difference of alkali, thereby form rough state at silicon chip surface, Here it is so-called pyramid shape matte.The pyramid shape matte has that light-receiving area is big, and the characteristics that reflectivity is low can strengthen the absorption of silicon chip to sunlight, improves the sunken optical efficiency of monocrystaline silicon solar cell, thereby improves the photoelectric transformation efficiency of solar cell.Pyramidal size and uniformity coefficient affect the sunken optical efficiency of solar cell simultaneously, are the main embodiments of making herbs into wool effect quality.
Woolen-making liquid commonly used at present mainly is made up of alkali and Virahol, concrete making herbs into wool process is under 76～85 ℃ of temperature, the silicon generation chemical reaction of alkali and monocrystalline silicon sheet surface generate silicate and hydrogen, and the difference that mainly act as by addition of Virahol changes pyramidal size.With the matte that this Woolen-making liquid making herbs into wool forms, its pyramidal size is about 6～8 μ m, and the pyramid particle is still bigger on the whole.In addition, the hydrogen of reaction generation can influence the further reaction of silicon and alkali attached to the pyramid surface, thereby make the pyramid size of generation inhomogeneous, though Virahol can utilize its volatility to take away a part of hydrogen, and is thorough not enough, so pyramidal uniformity coefficient still is poor.In addition, we know that Virahol has toxicity, so the use of Virahol is increased the postorder cost of sewage disposal.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes above prior art problem, a kind of Woolen-making liquid of monocrystaline silicon solar cell is provided, the pyramid size that adopts this Woolen-making liquid to make to form behind the fine-hair maring using monocrystalline silicon slice is little, size evenly, and the postorder cost of sewage disposal is low.
The technical solution adopted in the present invention is for providing a kind of monocrystaline silicon solar cell Woolen-making liquid, and this Woolen-making liquid comprises alkali, aldehyde material, Virahol and deionized water.Alkali and silicon react and generate silicate and hydrogen, and the hydrogen generation addition reaction of aldehydes mass-energy and generation generates alcohols, thereby the hydrogen that will be attached to the pyramid surface is taken away.In described every 1L deionized water: alkali content is 10～20g, and aldehyde matter content is 0.005～0.01L, and isopropanol content is 0.02～0.04L.
Described Woolen-making liquid also comprises nickel, and nickel is catalyzer, the addition reaction between catalysis aldehyde material and the hydrogen.In described every 1L deionized water, nickel content is 1～5g.
As preferably, described alkali is sodium hydroxide or potassium hydroxide.
As preferably, described aldehyde material is acetaldehyde or propionic aldehyde.
Compared with prior art, Woolen-making liquid of the present invention has following remarkable advantage and beneficial effect: carry out the formed matte of making herbs into wool with this Woolen-making liquid, its pyramid size is more tiny, is about 3～5 μ m; Contain aldehyde material in the Woolen-making liquid, the hydrogen generation addition reaction generation alcohols that produces in aldehydes mass-energy and the making herbs into wool process utilizes this chemical reaction to remove hydrogen and removes hydrogen more effectively with thorough than Virahol, makes the pyramid size of formation more even; And the same hydroxyl that all contains with Virahol of alcohols that generates, have and the similar chemical property of Virahol, when so the functional group that plays a role in the present invention is hydroxyl, the alcohols that generates can replace Virahol to play a role, thereby reduced the consumption of Virahol, this also corresponding postorder cost of sewage disposal that has reduced Virahol.
Another technical problem to be solved by this invention is, the preparation method of Woolen-making liquid of the present invention is provided, and can make the pyramid size that forms behind the fine-hair maring using monocrystalline silicon slice little with the Woolen-making liquid of this method preparation, size evenly, and the postorder cost of sewage disposal is low.
The preparation method of this monocrystaline silicon solar cell Woolen-making liquid may further comprise the steps:
1. add deionized water in texturing slot, the temperature of control deionized water is at 76～85 ℃.
2. add alkali, fully stir evenly.
3. add aldehyde material, fully stir evenly.
4. add nickel, fully stir evenly.
5. add Virahol, fully stir evenly, get Woolen-making liquid.
Each component of above-mentioned obtain solution is a formula rate content.
The preparation method of Woolen-making liquid of the present invention is simple to operate, feasibility degree height, and the Woolen-making liquid of preparing stability is high, making herbs into wool is effective, and the pyramid size that can make the matte that making herbs into wool forms is about 3～5 μ m, and size is evenly.
Description of drawings
The scanning electron microscope plane photo of shown in Figure 1 the is silicon chip surface matte that embodiment 1 obtains;
The scanning electron microscope plane photo of shown in Figure 2 the is silicon chip surface matte that embodiment 2 obtains;
The scanning electron microscope plane photo of shown in Figure 3 the is silicon chip surface matte that embodiment 3 obtains.
Embodiment
Below in conjunction with embodiment the present invention is further described in detail, but is not limited to this.
Embodiment 1:
Adopt following steps to prepare Woolen-making liquid: in texturing slot, to add deionized water 100L, the temperature of control deionized water is at 80 ℃, add sodium hydroxide 1000g, fully stir evenly, add acetaldehyde 500mL, fully stir evenly, add nickel 100g, fully stir evenly, add Virahol 3000mL, fully stir evenly, get Woolen-making liquid.
The silicon chip of 5 125mm * 125mm specification is put into texturing slot carry out making herbs into wool, 80 ℃ of making herbs into wool temperature, making herbs into wool time 25min.
Figure 1 shows that the scanning electron microscope plane photo of the silicon chip surface matte of gained, the pyramid size of Xing Chenging is less as we can see from the figure, and maximum is about 4.56 μ m, and size is more even.
Embodiment 2:
Adopt following steps to prepare Woolen-making liquid: in texturing slot, to add deionized water 100L, the temperature of control deionized water is at 76 ℃, add sodium hydroxide 2000g, fully stir evenly, add acetaldehyde 500mL, fully stir evenly, add nickel 100g, fully stir evenly, add Virahol 3000mL, fully stir evenly, get Woolen-making liquid.
The silicon chip of 5 125mm * 125mm specification is put into texturing slot carry out making herbs into wool, 76 ℃ of making herbs into wool temperature, making herbs into wool time 25min.
Figure 2 shows that the scanning electron microscope plane photo of the silicon chip surface matte of gained, the pyramid size of Xing Chenging is less as we can see from the figure, and maximum is about 4.68 μ m, and size is more even.
Embodiment 3:
Adopt following steps to prepare Woolen-making liquid: in texturing slot, to add deionized water 100L, the temperature of control deionized water is at 85 ℃, add sodium hydroxide 1000g, fully stir evenly, add acetaldehyde 1000mL, fully stir evenly, add nickel 500g, fully stir evenly, add Virahol 3000mL, fully stir evenly, get Woolen-making liquid.
The silicon chip of 5 125mm * 125mm specification is put into texturing slot carry out making herbs into wool, 85 ℃ of making herbs into wool temperature, making herbs into wool time 20min.
Figure 3 shows that the scanning electron microscope plane photo of the silicon chip surface matte of gained, the pyramid size of Xing Chenging is less as we can see from the figure, and maximum is about 4.86 microns, and size is more even.
The used raw material of embodiment is the commercially available industrial goods of common use.
The above embodiment of the present invention is can not be used to limit the present invention to explanation of the present invention, and implication suitable with claims of the present invention and any change in the scope all should be thought to be included in the scope of claims.
Claims (7)
1. monocrystaline silicon solar cell Woolen-making liquid, it is characterized in that: described Woolen-making liquid comprises alkali, aldehyde material, Virahol and deionized water.
2. monocrystaline silicon solar cell Woolen-making liquid according to claim 1 is characterized in that: in described every 1L deionized water:
Alkali content is 10～20g;
Aldehyde matter content is 0.005～0.01L;
Isopropanol content is 0.02～0.04L.
3. monocrystaline silicon solar cell Woolen-making liquid according to claim 2 is characterized in that: described Woolen-making liquid also comprises nickel.
4. monocrystaline silicon solar cell Woolen-making liquid according to claim 3 is characterized in that: in described every 1L deionized water, nickel content is 1～5g.
5. monocrystaline silicon solar cell Woolen-making liquid according to claim 1 is characterized in that: described alkali is sodium hydroxide or potassium hydroxide.
6. monocrystaline silicon solar cell Woolen-making liquid according to claim 1 is characterized in that: described aldehyde material is acetaldehyde or propionic aldehyde.
7. the preparation method of monocrystaline silicon solar cell Woolen-making liquid according to claim 4 is characterized in that: may further comprise the steps:
1. add deionized water in texturing slot, the temperature of control deionized water is at 76～85 ℃;
2. add alkali, fully stir evenly;
3. add aldehyde material, fully stir evenly;
4. add nickel, fully stir evenly;
5. add Virahol, fully stir evenly, get Woolen-making liquid;
Each component of above-mentioned obtain solution is a formula rate content.
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| CN 201110061452 CN102154712A (en) | 2011-03-10 | 2011-03-10 | Monocrystal silicon solar battery texture etching liquid and preparation method thereof |
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| CN 201110061452 CN102154712A (en) | 2011-03-10 | 2011-03-10 | Monocrystal silicon solar battery texture etching liquid and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426217A (en) * | 2011-09-08 | 2012-04-25 | 浙江向日葵光能科技股份有限公司 | Solution for measuring sodium silicate content in alkaline texturing solution and use method thereof |
| CN102496569A (en) * | 2011-12-31 | 2012-06-13 | 英利集团有限公司 | Texturing method of monocrystal N type solar cell slice |
| JP2018117068A (en) * | 2017-01-19 | 2018-07-26 | 信越化学工業株式会社 | Manufacturing method for high photoelectric conversion efficiency solar cell |
| CN109103297A (en) * | 2018-08-17 | 2018-12-28 | 安徽英发三友新能源科技有限公司 | A kind of monocrystalline solar cells piece process for etching |
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| CN101634026A (en) * | 2009-08-26 | 2010-01-27 | 北京市太阳能研究所有限公司 | Corrosive liquid for preparing monocrystal silicon textured surface and method thereof |
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| CN101691660A (en) * | 2009-09-29 | 2010-04-07 | 欧贝黎新能源科技股份有限公司 | Additive for preparing monocrystalline silicon suede |
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2011
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Patent Citations (7)
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| CN1983644A (en) * | 2005-12-13 | 2007-06-20 | 上海太阳能科技有限公司 | Production of monocrystalline silicon solar battery suede |
| CN100999388A (en) * | 2006-12-30 | 2007-07-18 | 南开大学 | Preparation method of polycrystalline silicon film of decorated and coated solution on surface with induction crystallization |
| CN101369613A (en) * | 2008-10-16 | 2009-02-18 | 张根发 | Method for preparing polysilicon solar battery suede in magnetic field |
| CN101423942A (en) * | 2008-11-13 | 2009-05-06 | 蒋冬 | Alkali etch solution and method for preparing monocrystalline silicon pile fabrics |
| CN101634026A (en) * | 2009-08-26 | 2010-01-27 | 北京市太阳能研究所有限公司 | Corrosive liquid for preparing monocrystal silicon textured surface and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426217A (en) * | 2011-09-08 | 2012-04-25 | 浙江向日葵光能科技股份有限公司 | Solution for measuring sodium silicate content in alkaline texturing solution and use method thereof |
| CN102496569A (en) * | 2011-12-31 | 2012-06-13 | 英利集团有限公司 | Texturing method of monocrystal N type solar cell slice |
| JP2018117068A (en) * | 2017-01-19 | 2018-07-26 | 信越化学工業株式会社 | Manufacturing method for high photoelectric conversion efficiency solar cell |
| CN109103297A (en) * | 2018-08-17 | 2018-12-28 | 安徽英发三友新能源科技有限公司 | A kind of monocrystalline solar cells piece process for etching |
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Application publication date: 20110817 |