CN102088042A - Preparation method of slurry for high-efficiency crystalline silica solar cell and slurry - Google Patents
Preparation method of slurry for high-efficiency crystalline silica solar cell and slurry Download PDFInfo
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- CN102088042A CN102088042A CN2009101998048A CN200910199804A CN102088042A CN 102088042 A CN102088042 A CN 102088042A CN 2009101998048 A CN2009101998048 A CN 2009101998048A CN 200910199804 A CN200910199804 A CN 200910199804A CN 102088042 A CN102088042 A CN 102088042A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention discloses a preparation method of slurry for a high-efficiency crystalline silica solar cell, the method comprises the concrete steps of: first, heating certain parts by mass of deionized water to 60 DEG C to 80 DEG C, slowly adding proper parts by mass of gum tragacanth powders under certain stirring conditions until the gum tragacanth powders are completely dissolved into gummy material, then stopping stirring and heating, and cooling the obtained gummy material at room temperature; second, adding certain parts by mass of fluorine-containing inorganic acid salt and organic matter into the gum tragacanth powder sol obtained by the first step with stirring at normal temperature; and a third step, performing high-speed stirring and ball milling on the mixture obtained by the second step to prepare the slurry. The slurry is composed of the gum tragacanth powder sol dissolved in the deionized water, the fluorine-containing inorganic acid salt and the organic matter, the fluorine-containing inorganic acid salt is preferably at least one kind of ammonium fluoride, ammonium bifluoride and hydrofluoric acid, and the organic matter is preferably at least one kind of alcohol, nylon powder and micronized wax.
Description
Technical field
The invention belongs to technical field of solar batteries, particularly relate to a kind of preparation method of high efficiency slurry for crystalline silicon solar batteries.
Background technology
Present common crystal-silicon solar cell manufacturing process is seven big steps, 1. removes the silicon chip surface affected layer; 2. formation suede structure; 3. diffuse to form PN junction; 4. removal phosphorosilicate glass; 5. deposition antireflective film; 6. the positive backplate of silk screen printing; 7. sintering forms ohmic contact.The crystal silicon battery that this flow process is made, its conversion efficiency is subjected to the restriction of its structure and physical mechanism, and its conversion efficiency is difficult to surpass 17.5%.The reason of common crystal silicon battery restriction photoelectric conversion efficiency mainly contains four: 1. diffusion; 2. front surface metallization ohmic contact; 3. carry on the back an ohmic contact and direct reflection; 4. battery surface pattern.To P type silicon chip, during the system PN junction, the low concentration surface doping can reduce the compound probability of minority carrier, improves the short circuit current of battery; But the doping of low concentration brings difficulty for follow-up metallization ohmic contact, and concentration is low more, and series resistance is big more, can reduce the open circuit voltage of battery.The ordinary silicon battery is considered the needs of doping content and ohmic contact, and square resistance has limited the raising of battery efficiency about 45 Ω/.
For addressing the above problem, mentioned the battery that the electrode contact zone is heavily doped, sensitive area is gently mixed in the lot of documents, being the manufacture method of selective emitter solar battery, is representative with the disclosed a kind of technology of selective emitter solar battery cheaply of patent CN101101936 wherein.The manufacturing process that this patent is announced is: remove the silicon chip surface damage 1.; 2. formation matte; 3. thermal oxide growth SiO2 layer; 4. printing corrosion type slurry forms electrode window through ray; 5. heavily diffusion in POC13; 6. the removal oxide-film gently spreads in POC13; 7. removal phosphorosilicate glass; 8. deposition antireflective film; Screen printing electrode and the back of the body; 10. sintering is realized metallization; The superiority of this method is to adopt the printing corroding method to form on SiO2 heavily to expand window, replaced expensive photoetching process.This printing corroding method applies to a kind of slurry that prints, easily removes, corrodes the SiO2 film.
Summary of the invention
The objective of the invention is to put forward preparation method from a kind of high efficiency slurry for crystalline silicon solar batteries, to prepare the slurry that can print, easily remove, corrode the SiO2 film, so that the SiO2 film of selective corrosion silicon chip surface, expose the silicon face window so that the purpose of selectivity diffusion, and then prepare the high efficiency crystal silicon solar energy battery.
In order to achieve the above object, technical scheme of the present invention provides a kind of preparation method of high efficiency slurry for crystalline silicon solar batteries, it is characterized in that, forms by being dissolved in the adragant powder colloidal sol of deionized water, fluorine-containing inorganic acid salt and organic substance.
Wherein, described fluorine-containing inorganic acid salt is preferably: at least a in ammonium fluoride, ammonium acid fluoride, the hydrofluoric acid.
Further, described organic substance is preferably at least a among alcohol, nylon powder, the little wax powder.
The present invention also provides the preparation method of above-mentioned high efficiency slurry for crystalline silicon solar batteries, it is characterized in that, concrete steps are:
The first step: certain mass part deionized water is heated to 60 ℃-80 ℃,,, stops to stir, heating the room temperature cooling until all being dissolved into glue must slowly adding an amount of mass parts adragant powder under the stirring condition.
Second step: the adragant powder colloidal sol that the first step is made adds certain mass part under stirring at normal temperature fluorine-containing inorganic acid salt, organic substance.
The 3rd step: the mixture that second step was obtained carries out high-speed stirred, ball milling makes slurry.
A kind of slurry that prints, easily removes, corrodes the SiO2 film of the present invention preparation so that the SiO2 film of selective corrosion silicon chip surface, exposes the silicon face window so that the purpose of selectivity diffusion, so that preparation high efficiency crystal silicon solar energy battery.
Embodiment
Further specify the present invention below.
A kind of high efficiency slurry for crystalline silicon solar batteries comprises the adragant powder colloidal sol that is dissolved in deionized water, fluorine-containing inorganic acid salt and organic substance,
Fluorine-containing inorganic acid salt is preferably: at least a in ammonium fluoride, ammonium acid fluoride, the hydrofluoric acid.
Organic substance is preferably at least a among alcohol, nylon powder, the little wax powder.
Embodiment 1
A kind of preparation method of high efficiency slurry for crystalline silicon solar batteries, its concrete steps are:
1. 100 mass parts deionized waters are heated to 60 ℃, under stirring condition, slowly add the adragant powder of 10 parts of quality,, stop to stir, heating the room temperature cooling until all being dissolved into glue.
2. the adragant powder colloidal sol that the first step is made adds mass ratio under stirring at normal temperature be 40: 5: 10 ammonium fluoride, alcohol, nylon powder.
3. the mixture that second step was obtained carries out high-speed stirred, ball milling makes slurry.
A kind of slurry that prints, easily removes, corrodes the SiO2 film of the present invention preparation so that the SiO2 film of selective corrosion silicon chip surface, exposes the silicon face window so that the purpose of selectivity diffusion, so that preparation high efficiency crystal silicon solar energy battery.(I'm sorry, how to obtain these advantages, please analyze)
Embodiment 2
A kind of preparation method of high efficiency slurry for crystalline silicon solar batteries, its concrete steps are:
1. 100 mass parts deionized waters are heated to 70 ℃, under stirring condition, slowly add the adragant powder of 10 parts of quality,, stop to stir, heating the room temperature cooling until all being dissolved into glue.
2. the adragant powder colloidal sol that the first step is made adds the certain mass ratio under stirring at normal temperature be 30: 30 fluorinated hydrogen ammonium, little wax powder.
3. the mixture that second step was obtained carries out high-speed stirred, ball milling makes slurry.
A kind of slurry that prints, easily removes, corrodes the SiO2 film of the present invention preparation so that the SiO2 film of selective corrosion silicon chip surface, exposes the silicon face window so that the purpose of selectivity diffusion, so that preparation high efficiency crystal silicon solar energy battery.
Embodiment 3
A kind of preparation method of high efficiency slurry for crystalline silicon solar batteries, its concrete steps are:
1. 100 mass parts deionized waters are heated to 80 ℃, slow adding mass parts is 5 adragant powder under stirring condition, until all being dissolved into glue, stops to stir, heating the room temperature cooling.
2. the adragant powder colloidal sol that the first step is made adds the certain mass ratio under stirring at normal temperature be 5: 1: 10: 30 hydrofluoric acid, alcohol, nylon powder, little wax powder.
3. the mixture that second step was obtained carries out high-speed stirred, ball milling makes slurry.
A kind of slurry that prints, easily removes, corrodes the SiO2 film of the present invention preparation so that the SiO2 film of selective corrosion silicon chip surface, exposes the silicon face window so that the purpose of selectivity diffusion, so that preparation high efficiency crystal silicon solar energy battery.
Claims (6)
1. the preparation method of a high efficiency slurry for crystalline silicon solar batteries is characterized in that, may further comprise the steps:
The first step: certain mass part deionized water is heated to 60 ℃-80 ℃,,, stops to stir, heating the room temperature cooling until all being dissolved into glue must slowly adding an amount of mass parts adragant powder under the stirring condition;
Second step: the adragant powder colloidal sol that the first step is made adds certain mass part under stirring at normal temperature fluorine-containing inorganic acid salt and organic substance;
The 3rd step: with second mixture that obtain of step carry out high-speed stirred, grind slurry.
2. preparation method as claimed in claim 1 is characterized in that, described fluorine-containing inorganic acid salt is preferably: at least a in ammonium fluoride, ammonium acid fluoride, the hydrofluoric acid.
3. preparation method as claimed in claim 1 is characterized in that, organic substance described in second step is preferably at least a among alcohol, nylon powder, the little wax powder.
4. high efficiency slurry for crystalline silicon solar batteries, comprise the adragant powder colloidal sol that is dissolved in deionized water, fluorine-containing inorganic acid salt and organic substance, each components by weight is: deionized water: the adragant powder: fluorine-containing inorganic acid salt: organic substance=5～50: 1: 5～80: 1～100.
5. a kind of high efficiency slurry for crystalline silicon solar batteries as claimed in claim 4 is characterized in that, described fluorine-containing inorganic acid salt is preferably: at least a in ammonium fluoride, ammonium acid fluoride, the hydrofluoric acid.
6. a kind of high efficiency slurry for crystalline silicon solar batteries as claimed in claim 4 is characterized in that, described organic substance is preferably at least a among alcohol, nylon powder, the little wax powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101998048A CN102088042A (en) | 2009-12-02 | 2009-12-02 | Preparation method of slurry for high-efficiency crystalline silica solar cell and slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101998048A CN102088042A (en) | 2009-12-02 | 2009-12-02 | Preparation method of slurry for high-efficiency crystalline silica solar cell and slurry |
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| CN102088042A true CN102088042A (en) | 2011-06-08 |
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| CN2009101998048A Pending CN102088042A (en) | 2009-12-02 | 2009-12-02 | Preparation method of slurry for high-efficiency crystalline silica solar cell and slurry |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030160026A1 (en) * | 2000-04-28 | 2003-08-28 | Sylke Klein | Etching pastes for inorganic surfaces |
| US20040110393A1 (en) * | 2001-02-02 | 2004-06-10 | Adolf Munzer | Method for structuring an oxide layer applied to a substrate material |
| CN1644545A (en) * | 2004-12-21 | 2005-07-27 | 陈荷丽 | Etching agent of motor-driven vehicle glass and applying method thereof |
-
2009
- 2009-12-02 CN CN2009101998048A patent/CN102088042A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030160026A1 (en) * | 2000-04-28 | 2003-08-28 | Sylke Klein | Etching pastes for inorganic surfaces |
| US20040110393A1 (en) * | 2001-02-02 | 2004-06-10 | Adolf Munzer | Method for structuring an oxide layer applied to a substrate material |
| CN1644545A (en) * | 2004-12-21 | 2005-07-27 | 陈荷丽 | Etching agent of motor-driven vehicle glass and applying method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110608 |