CN105133027A - Small-textured-face monocrystalline silicon slice texturing solution and preparation method thereof - Google Patents
Small-textured-face monocrystalline silicon slice texturing solution and preparation method thereof Download PDFInfo
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- CN105133027A CN105133027A CN201510515375.6A CN201510515375A CN105133027A CN 105133027 A CN105133027 A CN 105133027A CN 201510515375 A CN201510515375 A CN 201510515375A CN 105133027 A CN105133027 A CN 105133027A
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Abstract
The invention discloses a small-textured-face monocrystalline silicon slice texturing solution which is characterized by being prepared from the following raw materials in parts by weight: 0.5-1 part of sodium hydroxide, 0.3-0.5 part of poloxamer, 2-4 parts of diethlyeneglycol monobutylether, 0.5-1 part of sodium polyacrylate, 0.3-0.5 part of sodium lauryl sulfate, 0.3-0.5 part of starch sodium octenylsuccinate, 0.5-1 part of triethyl citrate, 3-5 parts of an auxiliary agent, and 80-100 parts of water. The texturing solution effectively improves the consistency and repeatability of a texturing technology, increases the textured surface density, can obtain a small-size and good-uniformity textured surface, thereby increasing the efficiency of solar cells and improving the quality of the product; and the texturing solution does not contain IPA, is beneficial to environmental protection and human health, and is safe and environmentally friendly.
Description
Technical field
The present invention relates to silicon wafer wool making technology, be specifically related to a kind of little textured mono-crystalline silicon sheet Woolen-making liquid and preparation method thereof.
Background technology
Along with energy dilemma is on the rise, sun power has become following most potential substitute energy, and solar cell industry development rapidly.Restrict one of difficult problem of its development is exactly how to improve solar cell photoelectric transformation efficiency, reduce costs.Wherein leather producing process is the important step improving photoelectric transformation efficiency.
Making herbs into wool is also known as " surface-texturing ", and effective suede structure makes incident light in silicon chip surface multiple reflections and refraction, adds the absorption of light, reduces reflectivity, contributes to the performance improving battery.Silicon single crystal leather producing process the most often uses chemical corrosion method, generally uses NaOH/ Virahol (IPA) system.IPA has suitable toxicity, has harm to human body, and IPA is easy to volatilization in making herbs into wool process simultaneously, produces detrimentally affect to environment.Further, after making herbs into wool, silicon face pyramid is bigger than normal, and lack of homogeneity is also unfavorable for the quality product of the carrying out of subsequent technique and solar cell.
Summary of the invention
The object of this invention is to provide a kind of little textured mono-crystalline silicon sheet Woolen-making liquid.
The present invention is achieved by the following technical solutions:
A kind of little textured mono-crystalline silicon sheet Woolen-making liquid, it is obtained by the raw material of following weight parts:
Sodium hydroxide 0.5-1, poloxamer 0.3-0.5, diethylene glycol monobutyl ether 2-4, sodium polyacrylate 0.5-1, lauryl alcohol sodium sulfovinate 0.3-0.5, starch Sodium Octenyl Succinate 0.3-0.5, triethyl citrate 0.5-1, auxiliary agent 3-5, water 80-100;
Wherein auxiliary agent is made up of the raw material of following weight part: Chinese honey locust 10-15, nano titanium oxide 0.1-0.15, ammonium persulphate 0.1-0.2, vinyl-acetic ester 1-1.5, sodium bicarbonate 0.2-0.4, Dodecyl Polyglucosides 1-2, water 100-150; The preparation method of auxiliary agent is by spaonin powder comminution powder, the spaonin powder obtained and sodium bicarbonate, Dodecyl Polyglucosides are added to the water jointly 70-80 DEG C, 200-400r/min stirs 4-6h, cooled and filtered, vinyl-acetic ester and nano titanium oxide is added and ultrasonic disperse 5-10min in filtrate, then ammonium persulfate solution 70-80 DEG C that adds 2-5% is stirred 1-2h, cooled and filtered, to obtain final product.
A preparation method for little textured mono-crystalline silicon sheet Woolen-making liquid, comprises the following steps:
(1) lauryl alcohol sodium sulfovinate, starch Sodium Octenyl Succinate are added jointly in the water of 1/3-1/2 weight, first 400-600r/min stirs 5-10min, add triethyl citrate 70-80 DEG C again, 400-600r/min stir 10-20min, after cooling component A;
(2) first sodium hydroxide is dissolved in remaining water, then adds all the other raw materials 40-60 DEG C, 200-400r/min stirs 2-4h, obtain B component;
(3) by mixed to component A and B component be incorporated in 70-80 DEG C, stir 10-15min under 1000-1500r/min condition, namely obtain little textured mono-crystalline silicon sheet Woolen-making liquid after filtration.
Advantage of the present invention is:
The present invention adopts the composite of the raw materials such as lauryl alcohol sodium sulfovinate, the surface tension of effective hierarchy of control, the system of formation is made to have good surface property, stability and dispersive ability, there is good clean clean effect simultaneously, and in conjunction with auxiliary agent, surface modification is carried out to silicon chip, increase the nucleation site of silicon chip surface, promote the anisotropy of silicon single crystal, improve pyramidal density, by silicon chip surface film forming, control silicon chip corrosion speed in alkali lye, effectively improve consistence and the repeatability of leather producing process, improve matte density, size can be obtained little, the matte that homogeneity is good, thus improve solar battery efficiency, improve quality product, not containing IPA, be conducive to environment protection and HUMAN HEALTH, safety and environmental protection.
Embodiment
Non-limiting examples of the present invention is as follows:
A kind of little textured mono-crystalline silicon sheet Woolen-making liquid, is prepared from by the component raw material of following weight (kg):
Sodium hydroxide 0.5, poloxamer 0.3, diethylene glycol monobutyl ether 2, sodium polyacrylate 0.5, lauryl alcohol sodium sulfovinate 0.3, starch Sodium Octenyl Succinate 0.3, triethyl citrate 0.5, auxiliary agent 3, water 80;
Wherein, auxiliary agent is made up of the raw material of following weight (kg): Chinese honey locust 10, nano titanium oxide 0.1, ammonium persulphate 0.1, vinyl-acetic ester 1, sodium bicarbonate 0.2, Dodecyl Polyglucosides 1, water 100; The preparation method of auxiliary agent is by spaonin powder comminution powder, the spaonin powder obtained and sodium bicarbonate, Dodecyl Polyglucosides are added to the water jointly 80 DEG C, 200r/min stirs 4h, cooled and filtered, vinyl-acetic ester and nano titanium oxide is added and ultrasonic disperse 5min in filtrate, then the ammonium persulfate solution 70 DEG C adding 2% stirs 1h, cooled and filtered, to obtain final product.
The preparation method of little textured mono-crystalline silicon sheet Woolen-making liquid comprises the following steps:
(1) lauryl alcohol sodium sulfovinate, starch Sodium Octenyl Succinate are jointly added in the water of 1/3 weight, first 400r/min stirs 5min, then add triethyl citrate 80 DEG C, 400r/min stirs 10min, must component A after cooling;
(2) first sodium hydroxide is dissolved in remaining water, then adds all the other raw materials 60 DEG C, 400r/min stirs 2h, obtain B component;
(3) by mixed to component A and B component be incorporated in 80 DEG C, stir 15min under 1000r/min condition, namely obtain little textured mono-crystalline silicon sheet Woolen-making liquid after filtration.
Monocrystalline silicon piece is put into above-mentioned obtained Woolen-making liquid, under 80 DEG C of condition of water bath heating, carry out making herbs into wool, the making herbs into wool time is 15min, and the surface albedo of monocrystalline silicon piece is 8.8%, and matte pyramid is of a size of 1-2.5 μm, and size is even.
Claims (2)
1. a little textured mono-crystalline silicon sheet Woolen-making liquid, is characterized in that, it is obtained by the raw material of following weight parts:
Sodium hydroxide 0.5-1, poloxamer 0.3-0.5, diethylene glycol monobutyl ether 2-4, sodium polyacrylate 0.5-1, lauryl alcohol sodium sulfovinate 0.3-0.5, starch Sodium Octenyl Succinate 0.3-0.5, triethyl citrate 0.5-1, auxiliary agent 3-5, water 80-100;
Described auxiliary agent is made up of the raw material of following weight part: Chinese honey locust 10-15, nano titanium oxide 0.1-0.15, ammonium persulphate 0.1-0.2, vinyl-acetic ester 1-1.5, sodium bicarbonate 0.2-0.4, Dodecyl Polyglucosides 1-2, water 100-150; The preparation method of auxiliary agent is by spaonin powder comminution powder, the spaonin powder obtained and sodium bicarbonate, Dodecyl Polyglucosides are added to the water jointly 70-80 DEG C, 200-400r/min stirs 4-6h, cooled and filtered, vinyl-acetic ester and nano titanium oxide is added and ultrasonic disperse 5-10min in filtrate, then ammonium persulfate solution 70-80 DEG C that adds 2-5% is stirred 1-2h, cooled and filtered, to obtain final product.
2. the preparation method of a kind of little textured mono-crystalline silicon sheet Woolen-making liquid according to claim 1, is characterized in that, comprise the following steps:
(1) lauryl alcohol sodium sulfovinate, starch Sodium Octenyl Succinate are added jointly in the water of 1/3-1/2 weight, first 400-600r/min stirs 5-10min, add triethyl citrate 70-80 DEG C again, 400-600r/min stir 10-20min, after cooling component A;
(2) first sodium hydroxide is dissolved in remaining water, then adds all the other raw materials 40-60 DEG C, 200-400r/min stirs 2-4h, obtain B component;
(3) by mixed to component A and B component be incorporated in 70-80 DEG C, stir 10-15min under 1000-1500r/min condition, namely obtain little textured mono-crystalline silicon sheet Woolen-making liquid after filtration.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483834A (en) * | 2015-12-21 | 2016-04-13 | 扬州大学 | Method for preparing textured monocrystalline silicon by using novel compound monocrystalline silicon texturing corrosive liquid |
| CN107046072A (en) * | 2017-04-20 | 2017-08-15 | 通威太阳能（合肥）有限公司 | A kind of polycrystalline process for etching for improving the solar panel matte uniformity |
| CN111593413A (en) * | 2020-06-30 | 2020-08-28 | 常州时创能源股份有限公司 | Additive for monocrystalline silicon wafer chain type machine texturing and application thereof |
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| CN103219427A (en) * | 2013-04-10 | 2013-07-24 | 中国科学院微电子研究所 | Method for realizing high-trapping-light nanostructure single-face texture surface making |
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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 |
| CN103938276A (en) * | 2013-01-23 | 2014-07-23 | 尚德太阳能电力有限公司 | Monocrystalline silicon wafer texturing additive, texturing solution and corresponding texturing method |
| CN104576831A (en) * | 2014-12-31 | 2015-04-29 | 江苏顺风光电科技有限公司 | Monocrystalline silicon wafer alcohol-free texturing process and texturing additive |
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| CN101717946A (en) * | 2009-12-30 | 2010-06-02 | 江阴市润玛电子材料有限公司 | Liquid and method for etching texture on surfaces of silicon wafers |
| CN103938276A (en) * | 2013-01-23 | 2014-07-23 | 尚德太阳能电力有限公司 | Monocrystalline silicon wafer texturing additive, texturing solution and corresponding texturing method |
| CN103219427A (en) * | 2013-04-10 | 2013-07-24 | 中国科学院微电子研究所 | Method for realizing high-trapping-light nanostructure single-face texture surface making |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483834A (en) * | 2015-12-21 | 2016-04-13 | 扬州大学 | Method for preparing textured monocrystalline silicon by using novel compound monocrystalline silicon texturing corrosive liquid |
| CN105483834B (en) * | 2015-12-21 | 2017-09-05 | 扬州大学 | A kind of method that utilization novel built monocrystalline silicon making herbs into wool corrosive liquid prepares tool suede monocrystalline silicon |
| CN107046072A (en) * | 2017-04-20 | 2017-08-15 | 通威太阳能（合肥）有限公司 | A kind of polycrystalline process for etching for improving the solar panel matte uniformity |
| CN111593413A (en) * | 2020-06-30 | 2020-08-28 | 常州时创能源股份有限公司 | Additive for monocrystalline silicon wafer chain type machine texturing and application thereof |
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Application publication date: 20151209 |