CN103510160A - Monocrystalline silicon system flocking additive for crystalline silicon solar battery - Google Patents
Monocrystalline silicon system flocking additive for crystalline silicon solar battery Download PDFInfo
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- CN103510160A CN103510160A CN201210220285.0A CN201210220285A CN103510160A CN 103510160 A CN103510160 A CN 103510160A CN 201210220285 A CN201210220285 A CN 201210220285A CN 103510160 A CN103510160 A CN 103510160A
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- making herbs
- wool
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Abstract
The invention aims to disclose a monocrystalline silicon system flocking additive for a crystalline silicon solar battery. The monocrystalline silicon system flocking additive comprises the following components in percentage by mass: 1-2% of poly(propylene glycol), 0.01-0.05% of fatty amine polyoxyethylene ether, 0.5-5% of methyl pyruvate, 0.1-5% of vitamin C, 0.1-3% of oxalic acid, 0.1-5% of lactic acid, 0.1-2% of alkali and the balance of deionized water. Compared with the prior art, the monocrystalline silicon system flocking additive with the formula has the advantages that the size of a monocrystalline suede coating pyramid can be well controlled, and a suede coating structure with good uniformity and high density is obtained; the etching thinning weight of a monocrystalline silicon chip is stable and can be controlled at 5-8%; the appearance of the silicon chip is uniform in color, and the average reflectivity is lower than 15%, so that the requirements for industrial production are met, and the aim of the invention is achieved.
Description
Technical field
The present invention relates to a kind of making herbs into wool additive, particularly a kind of crystal silicon solar energy battery making herbs into wool additive that is applicable to leather producing process in single crystal silicon solar cell processing procedure.
Background technology
The preparation process of conventional crystal silicon solar cell mainly comprises six steps: (1) chemical corrosion attenuate, making herbs into wool and cleaning; (2) PN junction is prepared in diffusion; (3) etching is removed surperficial phosphorosilicate glass and edge PN junction; (4) prepare antireflective passivation silicon nitride film; (5) screen printing electrode sintering; (6) battery testing sorting.By above-mentioned not step, prepare the solar cell of based single crystal silicon crystal, then, by component package technology, crystalline silicon is made to assembly, be applied to photovoltaic generation.
The Main Function that matte (abbreviation making herbs into wool) is prepared in corrosion in above-mentioned steps is to form at monocrystalline silicon surface the fluctuating that is similar to " pyramid " shape, by these classes " pyramid " structure, reduce the reflectivity of silicon chip surface, increase photoabsorption area, thereby improve the transformation efficiency of battery.
On the other hand, in making herbs into wool process, can carry out to silicon chip surface the etching of certain depth, (general control is in each 5um left and right of pros and cons for the affected layer of removal silicon chip surface, clearance-" remove weight/original silicon chip weight "-be controlled at 5-8%), affected layer is the cutting damage layer that silicon chip forms in cutting processing process, contains a large amount of impurity, at silicon chip surface, forms a large amount of deathnium, after removal, can reduce silicon chip surface compound, improve battery efficiency.
And the chemical using in current making herbs into wool operation is mainly alkaline corrosion liquid, be specially: NaOH or KOH(concentration range are mass ratio 0.5-3%), (concentration range is volume ratio 1%-3% making herbs into wool additive (0.1-1%) and deionized water etc. to Virahol.(structure of class " pyramid " is prepared in 111 crystal orientation and the different erosion rate in (100) crystal orientation to utilization silicon single crystal during compared with low alkaline concentration.
In monocrystalline making herbs into wool process, main chemical reaction is as follows:
Wherein NaOH is main etching reagent, and the Virahol adding (IPA) can reduce silicon chip and liquid interfacial tension, be conducive to eliminate the bubble that interface forms, making herbs into wool additive Main Function is for controlling making herbs into wool speed of reaction, increase the difference of silicon single crystal (111) and (100) crystal orientation face erosion rate in alkaline solution, thus the high-density of realization and more uniform pyramid structure; In order to guarantee the effect of making herbs into wool, the Temperature Setting scope of alkali wool making liquor is 70-85 ℃.And the boiling point of Virahol is lower, 82 ℃ of left and right, therefore Virahol can volatilize in reaction process, cause the liquid proportion in texturing slot unbalance, in order to make up the reduction of Virahol, need to after each production batch, add Virahol and make up its volatile quantity, thereby cause the consumption of Virahol in making herbs into wool, to account for larger cost, and bring certain influence also to water treatment and production environment.
Therefore, need especially a kind of crystal silicon solar energy battery making herbs into wool additive, to solve the above-mentioned existing problem existing.
Summary of the invention
The object of the present invention is to provide a kind of crystal silicon solar energy battery making herbs into wool additive, for the deficiencies in the prior art, realizing under the even intensive prerequisite of monocrystalline alkali making herbs into wool matte, without using Virahol and additive, technology stability and the consistence of monocrystalline making herbs into wool have been improved.
Technical problem solved by the invention can realize by the following technical solutions:
A kind of crystal silicon solar energy battery making herbs into wool additive, it is characterized in that, the composition that it comprises following mass percent: glycerine polyethenoxy ether 1-2%, aliphatic amine polyoxyethylene ether 0.01-0.05%, propionic acid formicester 0.5-5%, vitamins C 0.1-5%, oxalic acid 0.1-3%, lactic acid 0.1-5%, alkali 0.1-2%, all the other are deionized water.
In one embodiment of the invention, the conductive resistance of described deionized water is for being greater than 15M Ω.
In one embodiment of the invention, described alkali comprises NaOH and KOH.
Crystal silicon solar energy battery making herbs into wool additive of the present invention, compared with prior art, adopts the making herbs into wool additive of above-mentioned formula, can control preferably the pyramidal size of monocrystalline silicon suede, acquisition good uniformity, the suede structure that density is high; The etching attenuate weight of monocrystalline silicon piece is stable, can be controlled at 5-8%; Silicon chip appearance luster homogeneous, average reflectance, lower than 15%, meets industrial demand, realizes object of the present invention.
Feature of the present invention can be consulted the detailed description of the graphic and following better embodiment of this case and be obtained and be well understood to.
Accompanying drawing explanation
Fig. 1 is for adopting the schematic cross-section after crystal silicon solar energy battery making herbs into wool additive of the present invention making herbs into wool;
Fig. 2 is for adopting the floor map after crystal silicon solar energy battery making herbs into wool additive of the present invention making herbs into wool;
Fig. 3 is the schematic diagram of monocrystalline silicon sheet surface reflectivity after embodiments of the invention 1 making herbs into wool;
Fig. 4 is the schematic diagram of monocrystalline silicon sheet surface reflectivity after embodiments of the invention 2 making herbs into wool.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Crystal silicon solar energy battery making herbs into wool additive of the present invention, it comprises dividing of following mass percent: glycerine polyethenoxy ether 1-2%, aliphatic amine polyoxyethylene ether 0.01-0.05%, pyruvic acid first 0.5-5%, vitamins C 0.1-5%, oxalic acid 0.1-3%, lactic acid 0.1-5%, alkali 0.1-2%, all the other are deionized water.
In the present invention, the conductive resistance of described deionized water is for being greater than 15M Ω.
In the present invention, described alkali comprises NaOH and KOH.
Embodiment 1:
Making herbs into wool additive formula is:
Glycerine polyethenoxy ether is 1%, and aliphatic amine polyoxyethylene ether is 0.05%, and pyruvic acid formicester is 5%, and vitamins C is 0.1%, and oxalic acid is 3%, and lactic acid is that 5%, NaOH is 2%, and all the other are deionized water.
According to the 1000ml making herbs into wool additive of above-mentioned recipe configuration, join in the monocrystalline texturing slot of 150L, in texturing slot, having configured NaOH content is 1.8%, texturing slot temperature is controlled at 80 ℃, after stirring, monocrystalline silicon piece is soaked in texturing slot and is reacted, the making herbs into wool time is controlled at 900 seconds-1200 seconds, and obtaining matte pyramid mean sizes is 3-4um left and right.Follow-up each batch (batch silicon chip quantity is 200-400 sheet) only need be added 200-300 gram of NaOH, 20ml additive.
After aforesaid method continuous production 40-60 batch owing to reflecting resultant Na in texturing slot
2siO
3too high levels (surpassing 10%), need to carry out the whole liquids of texturing slot and change, and again joins according to the method described above groove and produces.
Embodiment 2:
Making herbs into wool additive formula is:
Glycerine polyethenoxy ether is 1.5%, and aliphatic amine polyoxyethylene ether is 0.03%, pyruvic acid formicester 2.5%, and vitamins C is 1.5%, and oxalic acid is 1.5%, and lactic acid is that 2.5%, NaOH is 1%, and it is deionized water.
According to the 1000ml making herbs into wool additive of above-mentioned recipe configuration, join in the monocrystalline texturing slot of 100L, in texturing slot, having configured NaOH content is 1.8%, texturing slot temperature is controlled at 80 ℃, after stirring, monocrystalline silicon piece is soaked in texturing slot and is reacted, the making herbs into wool time is controlled at 1200 seconds-1500 seconds, and obtaining matte pyramid mean sizes is 2um left and right.Follow-up each batch (batch silicon chip quantity is 300-400 sheet) need be added 200-300 gram of NaOH, 20ml additive;
After aforesaid method continuous production 40-60 batch due to resultant of reaction Na in texturing slot
2siO
3too high levels (surpassing 10%), need to carry out the whole liquids of texturing slot and change, and again joins according to the method described above groove and produces.
Embodiment 3:
Making herbs into wool additive formula is:
Glycerine polyethenoxy ether is 2%, and aliphatic amine polyoxyethylene ether is 0.01%, and pyruvic acid formicester is 0.5%, and vitamins C is 5%, and oxalic acid is 0.1%, and lactic acid is that 0.1%, NaOH is 0.1%, and all the other are deionized water.
According to the 1000ml making herbs into wool additive of above-mentioned recipe configuration, join in the monocrystalline texturing slot of 100L, in texturing slot, having configured NaOH content is 1.8%, texturing slot temperature is controlled at 80 ℃, after stirring, monocrystalline silicon piece is soaked in texturing slot and is reacted, the making herbs into wool time is controlled at 1200 seconds-1500 seconds, and obtaining matte pyramid mean sizes is 2um left and right.Follow-up each batch (batch silicon chip quantity is 300-400 sheet) need be added 200-300 gram of NaOH, 20ml additive;
After aforesaid method continuous production 40-60 batch due to resultant of reaction Na in texturing slot
2siO
3too high levels (surpassing 10%), need to carry out the whole liquids of texturing slot and change, and row is joined groove production according to the method described above again.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. a crystal silicon solar energy battery making herbs into wool additive, it is characterized in that, the composition that it comprises following mass percent: glycerine polyethenoxy ether 1-2%, aliphatic amine polyoxyethylene ether 0.01-0.05%, pyruvic acid formicester 0.5-5%, vitamins C 0.1-5%, oxalic acid 0.1-3%, lactic acid 0.1-5%, alkali 0.1-2%, all the other are deionized water.
2. crystal silicon solar energy battery making herbs into wool additive as claimed in claim 1, is characterized in that, the conductive resistance of described deionized water is for being greater than 15M Ω.
3. crystal silicon solar energy battery making herbs into wool additive as claimed in claim 1, is characterized in that, described alkali comprises NaOH and KOH.
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| CN201210220285.0A CN103510160A (en) | 2012-06-29 | 2012-06-29 | Monocrystalline silicon system flocking additive for crystalline silicon solar battery |
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| CN201210220285.0A CN103510160A (en) | 2012-06-29 | 2012-06-29 | Monocrystalline silicon system flocking additive for crystalline silicon solar battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747126A (en) * | 2017-11-03 | 2018-03-02 | 通威太阳能（安徽）有限公司 | A kind of monocrystalline silicon is without alcohol flocking additive, Woolen-making liquid and its application method |
| CN110042474A (en) * | 2019-05-18 | 2019-07-23 | 上海汉遥新材料科技有限公司 | A kind of monocrystaline silicon solar cell flocking additive and its application |
| CN110578176A (en) * | 2019-09-05 | 2019-12-17 | 通威太阳能(眉山)有限公司 | texture surface making accelerant for single-crystal high-dense-grid solar cell with small texture surface and using method of texture surface making accelerant |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115915A (en) * | 2010-12-31 | 2011-07-06 | 百力达太阳能股份有限公司 | Single crystal silicon texture-making additive and single crystal silicon texture-making technology |
| CN102337595A (en) * | 2011-04-19 | 2012-02-01 | 上海晶太光伏科技有限公司 | Small-texture monocrystal silicon solar cell texture-manufacturing promoter and application thereof |
-
2012
- 2012-06-29 CN CN201210220285.0A patent/CN103510160A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115915A (en) * | 2010-12-31 | 2011-07-06 | 百力达太阳能股份有限公司 | Single crystal silicon texture-making additive and single crystal silicon texture-making technology |
| CN102337595A (en) * | 2011-04-19 | 2012-02-01 | 上海晶太光伏科技有限公司 | Small-texture monocrystal silicon solar cell texture-manufacturing promoter and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747126A (en) * | 2017-11-03 | 2018-03-02 | 通威太阳能（安徽）有限公司 | A kind of monocrystalline silicon is without alcohol flocking additive, Woolen-making liquid and its application method |
| CN110042474A (en) * | 2019-05-18 | 2019-07-23 | 上海汉遥新材料科技有限公司 | A kind of monocrystaline silicon solar cell flocking additive and its application |
| CN110578176A (en) * | 2019-09-05 | 2019-12-17 | 通威太阳能(眉山)有限公司 | texture surface making accelerant for single-crystal high-dense-grid solar cell with small texture surface and using method of texture surface making accelerant |
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Application publication date: 20140115 |