CN103886931A - Aluminum paste for upconversion solar cell - Google Patents
Aluminum paste for upconversion solar cell Download PDFInfo
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- CN103886931A CN103886931A CN201410040006.1A CN201410040006A CN103886931A CN 103886931 A CN103886931 A CN 103886931A CN 201410040006 A CN201410040006 A CN 201410040006A CN 103886931 A CN103886931 A CN 103886931A
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Abstract
The invention relates to an aluminum paste especially relates to an aluminum paste for an upconversion solar cell. The aluminum paste comprises, by weight, 70 to 80 parts of aluminum powder, 15 to 30 parts of organic binders, and 0.1 to 2.0 parts of upconversion additives. According to the aluminum paste for the upconversion solar cell and a preparation method thereof, the conversion efficiency is effectively raised.
Description
Technical field:
The present invention relates to a kind of aluminium paste, particularly a kind of up-conversion solar cell aluminium paste.
Background technology
The high conversion efficiency theoretical value of silicon solar cell is 29%, but the Gao conversion Xiao of the silicon solar cell of mass production now Shuais And and be no more than 20%, and reason is laid the blame on what silicon solar cell can not the whole transform light energy of Will become electric current.
The energy of sunlight in space is 1366watts/m
2, when sunlight arrives terrestrial time through atmosphere, its energy has weakened as 1120-1000watts/m
2, wherein 44% is that visible ray (380-780nm), 50% is infrared light (700nm-1mm) and 3% ultraviolet light (100-380nm).When these radiation exposures are on silicon, the free electron effect generation current in photon and silicon.The wavelength of ray is shorter, and frequency is higher, and the energy having is just higher.But not the energy of the ray of all wavelengths can be converted into electric energy, is 1.12ev by the energy gap of what silicon, and the sunlight that only has wavelength to be less than 1200nm could be absorbed by silicon, produce electron-hole pair, produce photoelectric effect.To the not light in absorption region of the infrared light wavelength of what major part, just slattern.If can make full use of the spectrum of sunlight, that is to improve the soonest conversion efficiency.The conversion Xiao of silicon solar cell is Shuaied With Si semiconductor should be closely related to the spectrum Ring of sun different wave length, how to improve the absorption of silicon materials Right different wave length, and it is very important improving solar cell Zhuan Change efficiency.
Summary of the invention:
A kind of up-conversion solar cell aluminium paste, is characterized in that: the mass parts of described various compositions is: aluminium powder 70-80 part, organic bond 15-30 part, upper conversion additive 0.1-2.0 part.
Aluminium powder purity is greater than 99.5%.
The composition of upper conversion additive and various composition mol ratio are: SiO
2: 30-50, Al
2o
3: 1-20, CaO:1-10, NaF:1-15, CaF
2: 1-15, Erbium-doped rare earth: the 1-5 that mixes.
The composition of described organic bond and various composition quality part ratio are: terpinol: 30-50 part, 1-Methoxy-2-propyl acetate: 20-25 part, diethylene glycol butyl ether 20-25 part, ethyl cellulose: 3.5-5.5 part, oleic acid 2-6 part.
The preparation method of described upper conversion aluminum paste of silicon solar cells, mixes described aluminium powder to obtain mixture with blender with organic bond.Then mixture is caught up with to conversion additive, then mix with blender, utilize three-high mill to roll fineness to 25um, viscosity is 28000-38000mPa.s, obtains conversion silicon solar cell aluminium paste.
Upper conversion aluminum paste of silicon solar cells provided by the invention and preparation method thereof, effectively improves conversion efficiency.
Embodiment:
In order to utilize the infrared waves that penetrates silicon materials always, the invention provides a kind of upper conversion aluminum paste of silicon solar cells and preparation method thereof, make infrared waves be absorbed by silicon materials, to meet the conversion efficiency that improves cell piece.
The present invention is a kind of upper conversion aluminum paste of silicon solar cells, and it is mainly made up of aluminium powder, organic bond, upper conversion additive.
Prepare organic bond:
The composition of described organic bond and various composition quality part ratio are: terpinol: 30-50 part, 1-Methoxy-2-propyl acetate: 20-25 part, diethylene glycol butyl ether 20-25 part, ethyl cellulose: 3.5-5.5 part, oleic acid 2-6 part.Its preparation method is: Will mentioned component mass parts drops in reactor, mixing speed 90-130 rev/min, and constant temperature is 80-100 degree 4-5 hour.After completely solvent, utilize silk screen filter, obtain organic bond.
Conversion additive in preparation:
Composition and the various composition mol ratio of on described upper conversion additive, changing additive are: SiO
2: 30-50, Al
2o
3: 1-20, CaO:1-10 part, NaF:1-15, CaF
2: 1-15, Erbium-doped rare earth: the 1-5 that mixes.Its preparation method is: the powder of Will mentioned component mass parts mixes, grinds 60-80 minute.Thereafter Will mixed powder calcining 900-1200 degree, 1-5 hour, is cooled to room temperature, obtains piece Like thing.After fragmentation, it is milled to powder Will, crosses 500 eye mesh screens, obtains conversion additive.
Weigh according to table one quality proportioning, described aluminium powder is mixed and obtains mixture with blender with organic bond.Then mixture is caught up with to conversion additive, then mix with blender, utilize three-high mill to roll fineness to 25um, viscosity is 28000-38000mPa.s, obtains conversion silicon solar cell aluminium paste.By the up-conversion solar cell aluminum paste composition of this enforcement, utilize 250 order solar energy back field aluminum paste silk screens, be printed on the cell piece back side.Number to be printed is greatly about 0.85-0.9g, gained solar battery sheet after drying Dian sintering.
Experimental result shows as table two:
Based on the above results, the embodiment of the present invention provides upper conversion silicon solar aluminium paste and preparation method thereof, and by by upper conversion additive formula, additive is that can to improve solar battery sheet conversion efficiency be object.
Table one is specific embodiment, calculates by mass parts
Table two:
Claims (5)
1. a up-conversion solar cell aluminium paste, is characterized in that: the mass parts of described various compositions is: aluminium powder 70-80 part, organic bond 15-30 part, upper conversion additive 0.1-2.0 part.
2. above change according to claim 1 silicon solar cell aluminium paste, it is characterized in that: described aluminium powder purity is greater than 99.5%.
3. above change according to claim 1 silicon solar cell aluminium paste, it is characterized in that: the composition of described upper conversion additive and various composition mol ratio are: SiO
2: 30-50, Al
2o
3: 1-20, CaO:1-10, NaF:1-15, CaF
2: 1-15, Erbium-doped rare earth: the 1-5 that mixes.
4. above change according to claim 1 silicon solar cell aluminium paste, it is characterized in that: the composition of described organic bond and various composition quality part ratio are: terpinol: 30-50 part, 1-Methoxy-2-propyl acetate: 20-25 part, diethylene glycol butyl ether 20-25 part, ethyl cellulose: 3.5-5.5 part, oleic acid 2-6 part.
5. the preparation method of upper conversion aluminum paste of silicon solar cells according to claim 1: it is characterized in that described aluminium powder to mix and obtain mixture with organic bond blender, then mixture is caught up with to conversion additive, mix with blender again, utilize three-high mill to roll fineness to 25um, viscosity is 28000-38000mPa.s, obtains conversion silicon solar cell aluminium paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410040006.1A CN103886931B (en) | 2014-01-27 | 2014-01-27 | A kind of up-conversion solar cell aluminium paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410040006.1A CN103886931B (en) | 2014-01-27 | 2014-01-27 | A kind of up-conversion solar cell aluminium paste |
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| Publication Number | Publication Date |
|---|---|
| CN103886931A true CN103886931A (en) | 2014-06-25 |
| CN103886931B CN103886931B (en) | 2017-06-16 |
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|---|---|---|---|
| CN201410040006.1A Active CN103886931B (en) | 2014-01-27 | 2014-01-27 | A kind of up-conversion solar cell aluminium paste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810292A (en) * | 2016-04-29 | 2016-07-27 | 无锡光富光伏材料有限公司 | Graphene silver paste and preparation method and application thereof |
Citations (4)
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|---|---|---|---|---|
| US6174462B1 (en) * | 1998-01-20 | 2001-01-16 | Denso Corporation | Conductive paste composition including conductive metallic powder |
| CN101618946A (en) * | 2009-07-03 | 2010-01-06 | 中南大学 | Yb<3+>-doped oxyfluoride transparent microcrystal glass material and preparation method thereof |
| CN102324266A (en) * | 2011-08-18 | 2012-01-18 | 江苏泓源光电科技有限公司 | Glass-powder-free crystalline silicon solar battery aluminum paste and preparation method thereof |
| CN103474127A (en) * | 2013-08-23 | 2013-12-25 | 湖南红太阳光电科技有限公司 | Crystalline silicon battery back aluminum paste with upconversion characteristic |
-
2014
- 2014-01-27 CN CN201410040006.1A patent/CN103886931B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6174462B1 (en) * | 1998-01-20 | 2001-01-16 | Denso Corporation | Conductive paste composition including conductive metallic powder |
| CN101618946A (en) * | 2009-07-03 | 2010-01-06 | 中南大学 | Yb<3+>-doped oxyfluoride transparent microcrystal glass material and preparation method thereof |
| CN102324266A (en) * | 2011-08-18 | 2012-01-18 | 江苏泓源光电科技有限公司 | Glass-powder-free crystalline silicon solar battery aluminum paste and preparation method thereof |
| CN103474127A (en) * | 2013-08-23 | 2013-12-25 | 湖南红太阳光电科技有限公司 | Crystalline silicon battery back aluminum paste with upconversion characteristic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810292A (en) * | 2016-04-29 | 2016-07-27 | 无锡光富光伏材料有限公司 | Graphene silver paste and preparation method and application thereof |
| CN105810292B (en) * | 2016-04-29 | 2017-12-12 | 无锡光富光伏材料有限公司 | A kind of graphene silver paste and preparation method and application |
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| CN103886931B (en) | 2017-06-16 |
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