CN105113010A - Environmentally-friendly monocrystalline silicon wafer texturing liquor and preparation method thereof - Google Patents
Environmentally-friendly monocrystalline silicon wafer texturing liquor and preparation method thereof Download PDFInfo
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- CN105113010A CN105113010A CN201510515137.5A CN201510515137A CN105113010A CN 105113010 A CN105113010 A CN 105113010A CN 201510515137 A CN201510515137 A CN 201510515137A CN 105113010 A CN105113010 A CN 105113010A
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Abstract
The invention discloses environmentally-friendly monocrystalline silicon wafer texturing liquor. The texturing liquor is characterized by comprising, by weight, 0.5-1 part of sodium hydroxide, 3-5 parts of xylitol, 2-4 parts of sodium lactate, 0.3-0.5 part of Arabic gum, 0.5-1 part of disodium lauryl amphoacetate, 0.1-0.2 part of caprylic/capric triglyceride, 0.1-0.2 part of castor oil polyethenoxy ether, 3-5 parts of auxiliaries and 80-100 parts of water. The texturing liquor effectively improves uniformity and repeatability of a texturing technology, increases the density of suede, then improves the efficiency of a solar battery and improves product quality; because the texturing liquor does not contain IPA, environmental protection and body health are facilitated, the raw materials are easy to degrade and have no residues in the environment, and the texturing liquor is environmentally friendly.
Description
Technical field
The present invention relates to silicon wafer wool making technology, be specifically related to a kind of environmental protection wool making solution for monocrystalline silicon pieces 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.Degradation property is good, low toxicity, the noresidue in the environment of non-stimulated Woolen-making liquid, environmental protection, meets industry policy requirement, has more wide market outlook.
Summary of the invention
The object of this invention is to provide a kind of environmental protection wool making solution for monocrystalline silicon pieces.
The present invention is achieved by the following technical solutions:
A kind of environmental protection wool making solution for monocrystalline silicon pieces, it is obtained by the raw material of following weight parts:
Sodium hydroxide 0.5-1, Xylitol 3-5, Sodium.alpha.-hydroxypropionate 2-4, gum arabic 0.3-0.5, lauryl both sexes sodium-acetate 0.5-1, caprylic/capric triglyceride 0.1-0.2, castor oil polyoxyethylene ether 0.1-0.2, 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 environmental protection wool making solution for monocrystalline silicon pieces, comprises the following steps:
(1) lauryl both sexes sodium-acetate is added in the water of 1/3-1/2 weight, first 400-600r/min stirs 5-10min, add caprylic/capric triglyceride again, castor oil polyoxyethylene ether 70-80 DEG C, 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 environmental protection wool making solution for monocrystalline silicon pieces after filtration.
Advantage of the present invention is:
The present invention adopts the composite of the raw materials such as lauryl both sexes sodium-acetate, 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, thus improve solar battery efficiency, improve quality product, not containing IPA, be conducive to environment protection and HUMAN HEALTH, raw material is easy to degraded, noresidue in the environment, environmental protection.
Embodiment
Non-limiting examples of the present invention is as follows:
A kind of environmental protection wool making solution for monocrystalline silicon pieces, is prepared from by the component raw material of following weight (kg):
Sodium hydroxide 0.5, Xylitol 3, Sodium.alpha.-hydroxypropionate 2, gum arabic 0.3, lauryl both sexes sodium-acetate 0.5, caprylic/capric triglyceride 0.1, castor oil polyoxyethylene ether 0.1, 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 environmental protection wool making solution for monocrystalline silicon pieces comprises the following steps:
(1) add in the water of 1/3 weight by lauryl both sexes sodium-acetate, first 400r/min stirs 5min, then add caprylic/capric triglyceride, castor oil polyoxyethylene ether 80 DEG C, 400r/min stir 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 environmental protection wool making solution for monocrystalline silicon pieces 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 9.2%, and matte pyramid is of a size of 1.5-2.5 μm, and size is even.
Claims (2)
1. an environmental protection wool making solution for monocrystalline silicon pieces, is characterized in that, it is obtained by the raw material of following weight parts:
Sodium hydroxide 0.5-1, Xylitol 3-5, Sodium.alpha.-hydroxypropionate 2-4, gum arabic 0.3-0.5, lauryl both sexes sodium-acetate 0.5-1, caprylic/capric triglyceride 0.1-0.2, castor oil polyoxyethylene ether 0.1-0.2, 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 environmental protection wool making solution for monocrystalline silicon pieces according to claim 1, is characterized in that, comprise the following steps:
(1) lauryl both sexes sodium-acetate is added in the water of 1/3-1/2 weight, first 400-600r/min stirs 5-10min, add caprylic/capric triglyceride again, castor oil polyoxyethylene ether 70-80 DEG C, 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 environmental protection wool making solution for monocrystalline silicon pieces after filtration.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521634A (en) * | 2016-10-18 | 2017-03-22 | 湖州三峰能源科技有限公司 | Auxiliary chemical composition used for monocrystalline silicon or polycrystalline silicon acidic texturization and application thereof |
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| CN101540351A (en) * | 2009-04-14 | 2009-09-23 | 浙江大学 | Method for etching matte on surface of single crystal silicon solar energy battery |
| CN101962811A (en) * | 2010-11-01 | 2011-02-02 | 浙江晶科能源有限公司 | Monocrystalline silicon piece texturizing liquid and texturizing method thereof |
| CN101982570A (en) * | 2010-11-12 | 2011-03-02 | 大连三达奥克化学股份有限公司 | Etching solution for monocrystalline solar cell plate |
| CN102181935A (en) * | 2010-10-26 | 2011-09-14 | 江阴浚鑫科技有限公司 | Method and corrosive liquid for making texture surface of monocrystalline silicon |
| CN102703916A (en) * | 2012-05-14 | 2012-10-03 | 晶澳太阳能有限公司 | Cleaning solution for cleaning alkali-texturized silicon wafer of crystalline silicon solar cell |
| 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 |
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2015
- 2015-08-21 CN CN201510515137.5A patent/CN105113010A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101540351A (en) * | 2009-04-14 | 2009-09-23 | 浙江大学 | Method for etching matte on surface of single crystal silicon solar energy battery |
| CN102181935A (en) * | 2010-10-26 | 2011-09-14 | 江阴浚鑫科技有限公司 | Method and corrosive liquid for making texture surface of monocrystalline silicon |
| CN101962811A (en) * | 2010-11-01 | 2011-02-02 | 浙江晶科能源有限公司 | Monocrystalline silicon piece texturizing liquid and texturizing method thereof |
| CN101982570A (en) * | 2010-11-12 | 2011-03-02 | 大连三达奥克化学股份有限公司 | Etching solution for monocrystalline solar cell plate |
| CN102703916A (en) * | 2012-05-14 | 2012-10-03 | 晶澳太阳能有限公司 | Cleaning solution for cleaning alkali-texturized silicon wafer of crystalline silicon solar cell |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106521634A (en) * | 2016-10-18 | 2017-03-22 | 湖州三峰能源科技有限公司 | Auxiliary chemical composition used for monocrystalline silicon or polycrystalline silicon acidic texturization and application thereof |
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