CN203721738U - 3D printed solar cell conical gradient type electrode structure - Google Patents
3D printed solar cell conical gradient type electrode structure Download PDFInfo
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- CN203721738U CN203721738U CN201320888687.8U CN201320888687U CN203721738U CN 203721738 U CN203721738 U CN 203721738U CN 201320888687 U CN201320888687 U CN 201320888687U CN 203721738 U CN203721738 U CN 203721738U
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- grid line
- secondary grid
- conductive layer
- main grid
- seed layer
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a 3D printed solar cell conical gradient type electrode structure comprising a substrate, a primary grid line and a secondary grid line. The primary grid line and the secondary grid line are formed by 3D printing. The primary grid line and the secondary grid line are arranged on the substrate in a vertically intersecting way, and the secondary grid line has a segmented structure. The primary grid line comprises a primary grid line conductive layer and a primary grid line seed layer which is collated on the substrate. The primary grid line conductive layer is coated on the primary grid line seed layer. The secondary grid line comprises a secondary grid line conductive layer and a secondary grid line seed layer which is coated on the substrate. The secondary grid line conductive layer is coated on the secondary grid line seed layer. The secondary grid line conductive layer is a conical gradient type lamina. Compared with structures in the prior art, the electrode structure is fine and controllable in morphology, and height of the secondary grid line, which is closer to the primary grid line, is higher so that capacity of the secondary grid line in collecting carriers is enhanced and conductive performance of the grid line is improved.
Description
Technical field
The utility model relates to a kind of electrode structure of solar cell, especially relates to the solar cell conical gradual change formula electrode structure that a kind of 3D prints.
Background technology
Increasingly active along with industrial development and mankind's activity, the mankind increase increasingly to the consumption of the energy, and the shortage increasingly of underground non-reproducible fossil energy, energy supply and demand contradiction intensifies day by day, and oneself becomes one of key issue affecting human survival and development energy problem.Compare with many regenerative resources such as wind power generation, ocean power generation, biomass power generations, solar energy power generating has spatter property, fail safe, popularity, noiseless, pollution-free, energy is available anywhere, without consume fuel, mechanical rotating part, easy maintenance, can unattended operation, the construction period is short, scale is random, can be easily and many unrivaled advantages such as building combines.Solar cell is to utilize photovoltaic effect solar energy to be converted into the semiconductor device of electric energy, is then assembled into the device of different voltage, electric current and power, thereby makes people obtain new forms of energy.Solar cell is widely used in space technology, military depot, navigation mark, household electrical appliances and other shorts of electricity without electric outlying district, and wherein crystalline silicon battery plate is due to the commercially produced product that becomes main flow with low cost.
The main manufacturing process of silica-based solar cell monomer mainly comprises chemical prerinse and surface-texturing, diffusion system knot, etching phosphorosilicate glass or Pyrex, depositing antireflection film, making electrode and sintering.The rear end of metallization in solar cell technique, the quality of metal electrode is the key link that determines conversion efficiency.The front electrode of solar cell is to form the electric conducting material of tight ohmic contact with PN junction two ends, and it has the effect of collecting the charge carrier in silicon chip and being delivered to external circuit.
It is non-contact printing mode that 3D prints, without board fragment, can be applicable to thinner silicon chip (<140 μ m) conductive ink is passed through at a high speed to tiny nozzle by the program of setting, the ad-hoc location that is directly injected to substrate surface forms electrode pattern.Conductive ink is the high-resolution ink that contains nano_scale particle, except containing nano-silver powder, glass dust and organic phase, also contains the base metal elements such as Ni, Cu.3D prints by a plurality of conducting resinl thin layers that superpose can print thinner fuller metal wire, and grid line depth-width ratio approaches 1.0, has increased electrode cross-section long-pending, has promoted conductive capability.
The present stage design that adopts of solar energy crystalline silicon battery plate positive electrode figure is by many main grids (1～100) and many vertical secondary grid lines (5～200) with it, parallel to each other between main grid, also parallel to each other between secondary grid line.In kind electrode structure, main grid line and secondary grid line adopt identical conductive silver paste, the secondary grid line of diverse location also has close Cross Section Morphology, because charge carrier is to export to external circuit after secondary grid line is collected main grid line, if apart from the secondary grid line of main grid line diverse location keeping the conductive capability of homogeneous will affect carrier collection effect.
Utility model content
The purpose of this utility model is exactly to provide a kind of grid line pattern solar cell conical gradual change formula electrode structure that meticulous 3D controlled, that grid line electric conductivity is good prints in order to overcome the defect of above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
The solar cell conical gradual change formula electrode structure that a kind of 3D prints, comprise substrate, main grid line and secondary grid line, described main grid line and secondary grid line are printed and are formed by 3D, described main grid line and secondary grid line square crossing are arranged on substrate, and secondary grid line is segmental structure, described main grid line comprises main grid line conductive layer and main grid line Seed Layer, described main grid line Seed Layer is laid on substrate, described main grid line conductive layer is laid in main grid line Seed Layer, described secondary grid line comprises secondary grid line conductive layer and secondary grid line Seed Layer, described secondary grid line Seed Layer is laid on substrate, described secondary grid line conductive layer is laid in secondary grid line Seed Layer, described secondary grid line conductive layer is conical gradual change formula lamina.
Described secondary grid line conductive layer is conical gradual change formula lamina, and secondary grid line conductive layer is maximum near main grid line place height, less apart from main grid line secondary grid line conductive layer height far away.
The conical gradual change formula lamina that described secondary grid line conductive layer forms for print the stacking number of plies of the secondary grid line conductive layer of control diverse location by 3D.
Described main grid line Seed Layer is equal thickness lamina, and described secondary grid line Seed Layer is equal thickness lamina, and described main grid line conductive layer is equal thickness lamina.
Described secondary grid line subsection setup centered by main grid line, same main grid line both sides and be in the 0.05～10mm that is spaced apart of collinear two secondary grid lines.
Compared with prior art, the utlity model has following advantage:
One, Seed Layer and conductive layer adopt the conductive ink of different electrology characteristics, two kinds of ink stoicheiometries are all not identical with doped chemical, wherein conductive layer contains the base metals such as Cu, compare with Seed Layer that glass dust content reduces, silver content improves, can be according to the two-layer proportioning of the front road of cell piece technique flexible to improve conversion efficiency;
Two, main grid line and secondary grid line adopt nanoparticle metallic ink, and nanoparticle metallic ink is compared containing the Ag slurry of frit with tradition, can reduce contact resistance;
Three, print on demand, the conductive ink of use is saved consumption more than 30% compared with conventional silver slurry;
Four, grid line pattern is meticulous controlled, and the secondary grid line height nearer apart from main grid linear distance is larger, has strengthened the ability that secondary grid line is collected charge carrier, has improved grid line electric conductivity.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 is part section structural representation of the present utility model.
In figure, 1 is substrate, and 2 is main grid line, and 21 is main grid line conductive layer, and 22 is main grid line Seed Layer, and 3 is secondary grid line, and 31 is secondary grid line conductive layer, and 32 is secondary grid line Seed Layer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment 1
The solar cell conical gradual change formula electrode structure that a kind of 3D prints, as Fig. 1, shown in Fig. 2, comprise substrate 1, main grid line 2 and secondary grid line 3, main grid line 2 is printed and is formed by 3D with secondary grid line 3, main grid line 2 is arranged on substrate 1 with secondary grid line 3 square crossings, and secondary grid line 3 is segmental structure, main grid line 2 comprises main grid line conductive layer 21 and main grid line Seed Layer 22, main grid line Seed Layer 22 is laid on substrate 1, main grid line conductive layer 21 is laid in main grid line Seed Layer 22, secondary grid line 3 comprises secondary grid line conductive layer 31 and secondary grid line Seed Layer 32, secondary grid line Seed Layer 32 is laid on substrate 1, secondary grid line conductive layer 31 is laid in secondary grid line Seed Layer 32, secondary grid line conductive layer 31 is conical gradual change formula lamina.
Secondary grid line conductive layer 31 is conical gradual change formula lamina, and secondary grid line conductive layer 31 is maximum near main grid line 2 place's height, highly less apart from main grid line 2 secondary grid line conductive layer 31 far away.The conical gradual change formula lamina that secondary grid line conductive layer 31 forms for print the stacking number of plies of the secondary grid line conductive layer 31 of control diverse location by 3D.Secondary grid line 3 subsection setup centered by main grid line 2, secondary grid line 3 is spaced apart 0.05～10mm.
Main grid line Seed Layer 22 is equal thickness lamina, and secondary grid line Seed Layer 32 is equal thickness lamina, and main grid line conductive layer 21 is equal thickness lamina.
The interior conductive metal elements that all contains of main grid line conductive layer 21 or secondary grid line conductive layer 31.
Main grid line Seed Layer 22 or secondary grid line Seed Layer 32 adopts contact resistances less and print and form with the larger ink 3D of substrate 1 adhesion, and in this ink, the weight ratio of Ag, glass dust, glycol ether and Ni is 30: 5: 40: 0.1.
Main grid line conductive layer 21 or secondary grid line conductive layer 31 adopt the ink 3D printing that conductivity is larger to form, and in this ink, the weight ratio of Ag, glass dust, glycol ether and Cu is 35: 5: 40: 0.1.
In the present embodiment, grid line pattern is meticulous controlled, and the secondary grid line height nearer apart from main grid linear distance is larger, has strengthened the ability that secondary grid line is collected charge carrier, has improved grid line electric conductivity.
Embodiment 2
The solar cell conical gradual change formula electrode structure that a kind of 3D prints, as Fig. 1, shown in Fig. 2, comprise substrate 1, main grid line 2 and secondary grid line 3, main grid line 2 is printed and is formed by 3D with secondary grid line 3, main grid line 2 is arranged on substrate 1 with secondary grid line 3 square crossings, and secondary grid line 3 is segmental structure, main grid line 2 is complete structure, main grid line 2 comprises main grid line conductive layer 21 and main grid line Seed Layer 22, main grid line Seed Layer 22 is laid on substrate 1, main grid line conductive layer 21 is laid in main grid line Seed Layer 22, secondary grid line 3 comprises secondary grid line conductive layer 31 and secondary grid line Seed Layer 32, secondary grid line Seed Layer 32 is laid on substrate 1, secondary grid line conductive layer 31 is laid in secondary grid line Seed Layer 32, secondary grid line conductive layer 31 is conical gradual change formula lamina.
Secondary grid line conductive layer 31 is conical gradual change formula lamina, and secondary grid line conductive layer 31 is maximum near main grid line 2 place's height, highly less apart from main grid line 2 secondary grid line conductive layer 31 far away.The conical gradual change formula lamina that secondary grid line conductive layer 31 forms for print the stacking number of plies of the secondary grid line conductive layer 31 of control diverse location by 3D.Secondary grid line 3 subsection setup centered by main grid line 2, secondary grid line 3 is spaced apart 0.05～10mm.
Main grid line Seed Layer 22 is equal thickness lamina, and secondary grid line Seed Layer 32 is equal thickness lamina, and main grid line conductive layer 21 is equal thickness lamina.
The interior conductive metal elements that all contains of main grid line conductive layer 21 or secondary grid line conductive layer 31.
Main grid line Seed Layer 22 or secondary grid line Seed Layer 32 adopts contact resistances less and print and form with the larger ink 3D of substrate 1 adhesion, and in this ink, the weight ratio of Ag, glass dust, glycol ether and Ni is 70: 25: 70: 25.
Main grid line conductive layer 21 or secondary grid line conductive layer 31 adopt the ink 3D printing that conductivity is larger to form, and in this ink, the weight ratio of Ag, glass dust, glycol ether and Cu is 75: 25: 70: 25.
In the present embodiment, grid line pattern is meticulous controlled, and the secondary grid line height nearer apart from main grid linear distance is larger, has strengthened the ability that secondary grid line is collected charge carrier, has improved grid line electric conductivity.
Embodiment 3
The solar cell conical gradual change formula electrode structure that a kind of 3D prints, as Fig. 1, shown in Fig. 2, comprise substrate 1, main grid line 2 and secondary grid line 3, main grid line 2 is printed and is formed by 3D with secondary grid line 3, main grid line 2 is arranged on substrate 1 with secondary grid line 3 square crossings, and secondary grid line 3 is segmental structure, main grid line 2 is complete structure, main grid line 2 comprises main grid line conductive layer 21 and main grid line Seed Layer 22, main grid line Seed Layer 22 is laid on substrate 1, main grid line conductive layer 21 is laid in main grid line Seed Layer 22, secondary grid line 3 comprises secondary grid line conductive layer 31 and secondary grid line Seed Layer 32, secondary grid line Seed Layer 32 is laid on substrate 1, secondary grid line conductive layer 31 is laid in secondary grid line Seed Layer 32, secondary grid line conductive layer 31 is conical gradual change formula lamina.
Secondary grid line conductive layer 31 is conical gradual change formula lamina, and secondary grid line conductive layer 31 is maximum near main grid line 2 place's height, highly less apart from main grid line 2 secondary grid line conductive layer 31 far away.The conical gradual change formula lamina that secondary grid line conductive layer 31 forms for print the stacking number of plies of the secondary grid line conductive layer 31 of control diverse location by 3D.Secondary grid line 3 subsection setup centered by main grid line 2, secondary grid line 3 is spaced apart 0.05～10mm.
Main grid line Seed Layer 22 is equal thickness lamina, and secondary grid line Seed Layer 32 is equal thickness lamina, and main grid line conductive layer 21 is equal thickness lamina.
The interior conductive metal elements that all contains of main grid line conductive layer 21 or secondary grid line conductive layer 31.
Main grid line Seed Layer 22 or secondary grid line Seed Layer 32 adopts contact resistances less and print and form with the larger ink 3D of substrate 1 adhesion, and in this ink, the weight ratio of Ag, glass dust, glycol ether and Ni is 50: 10: 50: 5.
Main grid line conductive layer 21 or secondary grid line conductive layer 31 adopt the ink 3D printing that conductivity is larger to form, and in this ink, the weight ratio of Ag, glass dust, glycol ether and Cu is 50: 10: 50: 5.
In the present embodiment, grid line pattern is meticulous controlled, and the secondary grid line height nearer apart from main grid linear distance is larger, has strengthened the ability that secondary grid line is collected charge carrier, has improved grid line electric conductivity.
Claims (5)
1. the solar cell conical gradual change formula electrode structure that a 3D prints, it is characterized in that, comprise substrate, main grid line and secondary grid line, described main grid line and secondary grid line are printed and are formed by 3D, described main grid line and secondary grid line square crossing are arranged on substrate, and secondary grid line is segmental structure, described main grid line comprises main grid line conductive layer and main grid line Seed Layer, described main grid line Seed Layer is laid on substrate, described main grid line conductive layer is laid in main grid line Seed Layer, described secondary grid line comprises secondary grid line conductive layer and secondary grid line Seed Layer, described secondary grid line Seed Layer is laid on substrate, described secondary grid line conductive layer is laid in secondary grid line Seed Layer, described secondary grid line conductive layer is conical gradual change formula lamina.
2. the solar cell conical gradual change formula electrode structure that a kind of 3D according to claim 1 prints, it is characterized in that, described secondary grid line conductive layer is conical gradual change formula lamina, and secondary grid line conductive layer is maximum near main grid line place height, less apart from main grid line secondary grid line conductive layer height far away.
3. the solar cell conical gradual change formula electrode structure that a kind of 3D according to claim 1 and 2 prints, it is characterized in that the conical gradual change formula lamina that described secondary grid line conductive layer forms for print the stacking number of plies of the secondary grid line conductive layer of control diverse location by 3D.
4. the solar cell conical gradual change formula electrode structure that a kind of 3D according to claim 1 prints, it is characterized in that, described main grid line Seed Layer is equal thickness lamina, and described secondary grid line Seed Layer is equal thickness lamina, and described main grid line conductive layer is equal thickness lamina.
5. the solar cell conical gradual change formula electrode structure that a kind of 3D according to claim 1 prints, it is characterized in that, described secondary grid line subsection setup centered by main grid line, same main grid line both sides and be in the 0.05～10mm that is spaced apart of collinear two secondary grid lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888687.8U CN203721738U (en) | 2013-12-30 | 2013-12-30 | 3D printed solar cell conical gradient type electrode structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888687.8U CN203721738U (en) | 2013-12-30 | 2013-12-30 | 3D printed solar cell conical gradient type electrode structure |
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| Publication Number | Publication Date |
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| CN203721738U true CN203721738U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320888687.8U Expired - Fee Related CN203721738U (en) | 2013-12-30 | 2013-12-30 | 3D printed solar cell conical gradient type electrode structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752529A (en) * | 2013-12-30 | 2015-07-01 | 上海神舟新能源发展有限公司 | 3D printed tapered electrode structure of solar cell |
| CN106784170A (en) * | 2016-12-07 | 2017-05-31 | 深圳摩方新材科技有限公司 | A kind of Superlight solar cell prepared based on 3D printing technique |
-
2013
- 2013-12-30 CN CN201320888687.8U patent/CN203721738U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752529A (en) * | 2013-12-30 | 2015-07-01 | 上海神舟新能源发展有限公司 | 3D printed tapered electrode structure of solar cell |
| CN104752529B (en) * | 2013-12-30 | 2017-01-18 | 上海神舟新能源发展有限公司 | 3D printed tapered electrode structure of solar cell |
| CN106784170A (en) * | 2016-12-07 | 2017-05-31 | 深圳摩方新材科技有限公司 | A kind of Superlight solar cell prepared based on 3D printing technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20211230 |