CN107068243A - A kind of preparation method of lead free solar front side silver paste material - Google Patents

A kind of preparation method of lead free solar front side silver paste material Download PDF

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Publication number
CN107068243A
CN107068243A CN201710273369.3A CN201710273369A CN107068243A CN 107068243 A CN107068243 A CN 107068243A CN 201710273369 A CN201710273369 A CN 201710273369A CN 107068243 A CN107068243 A CN 107068243A
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China
Prior art keywords
silver paste
preparation
lead
front side
paste material
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CN201710273369.3A
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Inventor
袁志敏
裴春林
裴帆
裴一帆
孔贵兰
徐华
张俊华
丁秀霞
李晓宁
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Mianyang Zhong Ye science and Technology Co., Ltd.
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Mianyang Qifan Technology Co Ltd
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Priority to CN201710273369.3A priority Critical patent/CN107068243A/en
Publication of CN107068243A publication Critical patent/CN107068243A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20Conductive material dispersed in non-conductive organic material
    • H01B1/22Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02Details
    • H01L31/0224Electrodes
    • H01L31/022408Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Glass Compositions (AREA)

Abstract

The invention discloses a kind of preparation method of lead free solar front side silver paste material, by weight percentage, by organic carrier 10-15%, lead-free glass powder 1-5%, silver powder 81-88% is well mixed to obtain slurry A, and slurry A is ground through three-roll grinder, sieves, it is the front side silver paste material less than or equal to 10um to obtain fineness, and the preparation method of the lead-free glass powder is:By Bi2O3、B2O3、SiO2、ZnO、Ai2O3Be well mixed in Muffle furnace melting, quenching, ground in ball mill 0.5-0.6um lead-free glass powder;The organic carrier is made up of organic solvent, thickener, organic thixotropic agents and wetting dispersing agent.Technical solution of the present invention preparation technology is simple, after being ground to glass dust through three-roll grinder, and the glass powder fineness is less than or equal to 10um, is palladium powder.

Description

A kind of preparation method of lead free solar front side silver paste material
Technical field
The present invention relates to silver paste field, and in particular to a kind of preparation method of lead free solar front side silver paste material.
Background technology
Due to fossil resource excessively use, environment in recent years nobody increasingly by the positive and negative concern in the whole world.The sun Battery has gradually come into the visual field of people.Current crystal silicon solar batteries capture almost whole solar cell market, still Crystal silicon battery front slurry therewith is leaded silver paste, and its potential hazard to environment and health is huge therefore unleaded The exploitation of slurry has certain strategic importance and potential great market application value.
Based on this, study and develop and design a kind of preparation method of lead free solar front side silver paste material.
The content of the invention
The technical problems to be solved by the invention are:Existing solar cell contains the influence of lead silver paste environmental pollution Greatly, the purpose of technical solution of the present invention is:A kind of preparation method of lead free solar front side silver paste material is provided, solved existing The problem of leaded silver of solar cell has pollution to environment.
The present invention's is achieved through the following technical solutions:
A kind of preparation method of lead free solar front side silver paste material, by weight percentage, by organic carrier 10-15%, Lead-free glass powder 1-5%, silver powder 81-88% is well mixed to obtain slurry A, and slurry A is ground through three-roll grinder, sieves, and obtains Fineness is the front side silver paste material less than or equal to 10um, and the preparation method of the lead-free glass powder is:By Bi2O3, B2O3, SiO2, ZnO, Ai2O3 are well mixed in Muffle furnace melting, quenching, ground in ball mill 0.5-0.6um lead-free glass powder; The organic carrier is made up of organic solvent, thickener, organic thixotropic agents and wetting dispersing agent.
It is preferred that, with molar percent, the Bi2O31-18%, Ai2O30-0.5%, ZnO 0-1.5%, B2O3 5-22%, SiO215-32%.
It is preferred that, the B2O3Introduced by boric acid, SiO2Introduced by quartz sand, Bi2O3、Ai2O3, ZnO respectively by three oxidation two Bismuth, aluminum oxide, zinc oxide are introduced.
It is preferred that, the average grain diameter of the glass dust is 0.9-3.2mm, and its softening temperature point is 475-515 DEG C.
It is preferred that, the selection of the organic carrier is as follows:The organic solvent is selected from dipropylene glycol dibenzoate compound, ten At least one of diol ester, butyl carbitol, terpinol, diethyl phthalate and Methyl Benzene-o-dicarboxylate;It is described to increase Thick dose in ester gum, maleic rosin ester, cellulose acetate-butyrate, polymethacrylate resin at least one Kind;The organic thixotropic agents are selected from least one of rilanit special and polyolefin chloroflo, and the wetting dispersing agent is selected from ovum At least one of phosphatide and tributylcitrate.
The present invention compared with prior art, has the following advantages and advantages:
(1) the technical program replaces lead oxide using bismuth oxide, and front side silver paste material is made, through silk-screen printing, sintering Obtain the high solar cell of cell conversion efficiency afterwards, the battery is lead free solar cell, it is possible to decrease in use or Pollution after discarded to environment.
(2) lead-free glass powder of the present invention and the thermal coefficient of expansion of Al-BSF, softening Point matching, can be significantly improved just With silicon chip and the adhesive force of Al-BSF after the silver paste sintering of face, improve the welding performance of silver paste and the matching of aluminium.
(3) technical solution of the present invention preparation technology is simple, after being ground to glass dust through three-roll grinder, the glass powder fineness It is palladium powder less than or equal to 10um.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment, to present invention work Further to describe in detail, exemplary embodiment and its explanation of the invention is only used for explaining the present invention, is not intended as to this The restriction of invention.
Embodiment 1:
First, the organic carrier 10% of gross weight percentage will be accounted for, lead-free glass powder 1%, silver powder 81% is well mixed and must starched Expect A;
Then, slurry A is placed in three-roll grinder and ground, the slurry that sieving, wherein fineness are less than 10um is front Silver paste.
Wherein, organic carrier is made up of organic solvent, thickener, organic thixotropic agents and wetting dispersing agent.
Wherein, with molar percent, Bi2O31%, Ai2O30.1%, ZnO 1.5%, B2O35%, SiO232%.
Wherein, the B2O3Introduced by boric acid, SiO2Introduced by quartz sand, Bi2O3、Ai2O3, ZnO respectively by three oxidation two Bismuth, aluminum oxide, zinc oxide are introduced.
Wherein, the average grain diameter of lead-free glass powder is 0.9mm, and its softening temperature is 475 DEG C.
Wherein, the selection of organic carrier is as follows:The organic solvent is dipropylene glycol dibenzoate compound, and thickener is Ester gum, the organic thixotropic agents are rilanit special, and the wetting dispersing agent is lecithin.
Embodiment 2:
First, the organic carrier 12% of gross weight percentage will be accounted for, lead-free glass powder 3%, silver powder 85% is well mixed and must starched Expect A;
Then, slurry A is placed in three-roll grinder and ground, the slurry that sieving, wherein fineness are less than 10um is front Silver paste.
Wherein, organic carrier is made up of organic solvent, thickener, organic thixotropic agents and wetting dispersing agent.
Wherein, with molar percent, Bi2O315%, Ai2O30.3%, ZnO 1.2%, B2O315%, SiO2 18%.
Wherein, the B2O3Introduced by boric acid, SiO2Introduced by quartz sand, Bi2O3、Ai2O3, ZnO respectively by three oxidation two Bismuth, aluminum oxide, zinc oxide are introduced.
Wherein, the average grain diameter of lead-free glass powder is 1.5mm, and its softening temperature is 510 DEG C.
Wherein, the selection of organic carrier is as follows:The organic solvent is lauryl alcohol ester, and thickener is maleic rosin ester, The organic thixotropic agents are polyolefin chloroflo, and the wetting dispersing agent is tributylcitrate.
Embodiment 3:
First, the organic carrier 15% of gross weight percentage will be accounted for, lead-free glass powder 5%, silver powder 80% is well mixed and must starched Expect A;
Then, slurry A is placed in three-roll grinder and ground, the slurry that sieving, wherein fineness are less than 10um is front Silver paste.
Wherein, organic carrier is made up of organic solvent, thickener, organic thixotropic agents and wetting dispersing agent.
Wherein, with molar percent, Bi2O318%, Ai2O30.5%, ZnO 1.5%, B2O322%, SiO2 58%.
Wherein, the B2O3Introduced by boric acid, SiO2Introduced by quartz sand, Bi2O3、Ai2O3, ZnO respectively by three oxidation two Bismuth, aluminum oxide, zinc oxide are introduced.
Wherein, the average grain diameter of lead-free glass powder is 3.2mm, and its softening temperature is 525 DEG C.
Wherein, the selection of organic carrier is as follows:The organic solvent is lauryl alcohol ester, and thickener is maleic rosin ester, The organic thixotropic agents are polyolefin chloroflo, and the wetting dispersing agent is tributylcitrate.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included Within protection scope of the present invention.

Claims (5)

1. a kind of preparation method of lead free solar front side silver paste material, it is characterised in that:By weight percentage, by organic carrier 10-15%, lead-free glass powder 1-5%, silver powder 81-88% is well mixed to obtain slurry A, and slurry A is ground through three-roll grinder, Sieving, it is the front side silver paste material less than or equal to 10um to obtain fineness, and the preparation method of the lead-free glass powder is:By Bi2O3、 B2O3、SiO2、ZnO、Ai2O3Be well mixed in Muffle furnace melting, quenching, ground in ball mill 0.5-0.6um it is unleaded Glass dust;The organic carrier is made up of organic solvent, thickener, organic thixotropic agents and wetting dispersing agent.
2. a kind of preparation method of lead free solar front side silver paste material according to claim 1, it is characterised in that:With mole Percentages, the Bi2O31-18%, Ai2O30-0.5%, ZnO 0-1.5%, B2O35-22%, SiO2 15— 32%.
3. a kind of preparation method of lead free solar front side silver paste material according to claim 2, it is characterised in that:It is described B2O3Introduced by boric acid, SiO2Introduced by quartz sand, Bi2O3、Ai2O3, ZnO draws by bismuth oxide, aluminum oxide, zinc oxide respectively Enter.
4. a kind of preparation method of lead free solar front side silver paste material according to claim 3, it is characterised in that:The glass The average grain diameter of glass powder is 0.9-3.2mm, and its softening temperature point is 475-515 DEG C.
5. a kind of preparation method of lead free solar front side silver paste material according to claim 1, it is characterised in that:It is described to have The selection of airborne body is as follows:The organic solvent be selected from dipropylene glycol dibenzoate compound, lauryl alcohol ester, butyl carbitol, At least one of terpinol, diethyl phthalate and Methyl Benzene-o-dicarboxylate;The thickener be selected from ester gum, At least one of maleic rosin ester, cellulose acetate-butyrate, polymethacrylate resin;The organic thixotropic agents are selected from At least one of rilanit special and polyolefin chloroflo, the wetting dispersing agent in lecithin and tributylcitrate extremely Few one kind.
CN201710273369.3A 2017-04-21 2017-04-21 A kind of preparation method of lead free solar front side silver paste material Pending CN107068243A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110217992A (en) * 2019-05-24 2019-09-10 江苏大学 A kind of preparation method of environment-friendly glass frit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101964219A (en) * 2010-08-10 2011-02-02 上海九晶电子材料股份有限公司 Silver paste for positive of crystalline silicon solar cell and preparation method thereof
CN102629496A (en) * 2012-04-27 2012-08-08 西安银泰新能源材料科技有限公司 Crystalline silicon solar battery front side electrode lead-free conductive lead slurry and preparation method of crystalline silicon solar battery front side electrode lead-free conductive lead slurry
CN103915127A (en) * 2013-01-03 2014-07-09 上海匡宇电子技术有限公司 Front silver paste for high sheet resistance silicon-based solar cell and preparing method of front silver paste
CN106007390A (en) * 2016-05-13 2016-10-12 浙江光达电子科技有限公司 Lead-free glass composition for silicon solar cell front silver paste and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101964219A (en) * 2010-08-10 2011-02-02 上海九晶电子材料股份有限公司 Silver paste for positive of crystalline silicon solar cell and preparation method thereof
CN102629496A (en) * 2012-04-27 2012-08-08 西安银泰新能源材料科技有限公司 Crystalline silicon solar battery front side electrode lead-free conductive lead slurry and preparation method of crystalline silicon solar battery front side electrode lead-free conductive lead slurry
CN103915127A (en) * 2013-01-03 2014-07-09 上海匡宇电子技术有限公司 Front silver paste for high sheet resistance silicon-based solar cell and preparing method of front silver paste
CN106007390A (en) * 2016-05-13 2016-10-12 浙江光达电子科技有限公司 Lead-free glass composition for silicon solar cell front silver paste and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110217992A (en) * 2019-05-24 2019-09-10 江苏大学 A kind of preparation method of environment-friendly glass frit

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Effective date of registration: 20180712

Address after: 621000 261 east section of Fei Yun Road, hi tech Zone, Mianyang, Sichuan.

Applicant after: Mianyang Zhong Ye science and Technology Co., Ltd.

Address before: No. 39, Sanjiang Avenue, Mianyang, Sichuan, Sichuan

Applicant before: MIANYANG QIFAN TECHNOLOGY CO., LTD.

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Application publication date: 20170818