CN102148264A - Silicon solar battery with wire electrode and manufacturing method thereof - Google Patents
Silicon solar battery with wire electrode and manufacturing method thereof Download PDFInfo
- Publication number
- CN102148264A CN102148264A CN 201010619332 CN201010619332A CN102148264A CN 102148264 A CN102148264 A CN 102148264A CN 201010619332 CN201010619332 CN 201010619332 CN 201010619332 A CN201010619332 A CN 201010619332A CN 102148264 A CN102148264 A CN 102148264A
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- Prior art keywords
- solar cell
- electrode
- wire electrode
- wire
- silicon solar
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 30
- 239000010703 silicon Substances 0.000 title claims abstract description 30
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005286 illumination Methods 0.000 claims abstract description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 24
- 229910052709 silver Inorganic materials 0.000 claims description 24
- 239000004332 silver Substances 0.000 claims description 24
- 238000005245 sintering Methods 0.000 claims description 11
- 239000006117 anti-reflective coating Substances 0.000 claims description 6
- 238000007639 printing Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000003376 silicon Chemical class 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor 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
- H01L31/04—Semiconductor 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 adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor 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
- H01L31/04—Semiconductor 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 adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0512—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module made of a particular material or composition of materials
-
- 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
Abstract
The invention relates to a silicon solar battery with a wire electrode and a manufacturing method thereof. The wire electrode is covered on a plane of illumination of the solar battery; and photo-induced current is directly led out by a wire. Compared with the prior art, the silicon solar battery with the wire electrode uses the wire as a solar battery electrode, so that the conductivity of the electrode is improved, the shading area of the electrode is reduced, and the conversion efficiency of the solar battery is increased. By the wire electrode provided by the invention, adjacent solar batteries are connected in series; the traditional interconnection strip and assembly welding process is substituted; damages to an assembly during welding are avoided; yield is increased; electrode manufacturing and battery concatenation are completed synchronously; and a process flow is simplified.
Description
Technical field
The present invention relates to a kind of solar cell and manufacture method thereof, especially relate to a kind of silicon solar cell and manufacture method thereof with wire electrode.
Background technology
Solar cell is subjected to paying close attention to widely as green clean energy resource.At present, the electrode of conventional solar cell is to adopt the mode of silk screen printing silver slurry to form required figure at solar battery surface, and by combining closely with solar battery surface behind the high temperature sintering, plays the effect of collection and derived current.
Yet the preparation method of conventional solar cell electrode exists some not enough: greater than 80 μ m, the shading area is bigger usually for the width that 1, prints electrode, and solar cell light utilizes area to reduce, and has reduced the light absorption probability; 2, have hole in the middle of the silver electrode behind the high temperature sintering, the resistivity of electrode increases, and has increased the power loss on the electrode, has reduced the conversion efficiency of solar cell; 3, in the assembly welding procedure, different because of the coefficient of expansion of interconnecting strip and solar cell, produce bigger thermal stress, cause fragment.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of in order to overcome the defective that above-mentioned prior art exists and reduced the shading area, increased the light absorption probability, increased electrode conductivity, reduced power loss, improved the silicon solar cell with wire electrode and the manufacture method thereof of conversion efficiency.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of silicon solar cell with wire electrode, it is characterized in that, the electrode of this silicon solar cell is made of wire electrode, the plane of illumination of solar cell is coated with wire electrode, described wire electrode and solar battery surface form ohmic contact, and the photogenerated current that solar cell produces is directly derived by wire electrode.
The plane of illumination of described solar cell is coated with wire electrode, as the front electrode of solar cell.
The back electrode of described solar cell is the silver electrode of wire electrode or conventional printing.
Described wire electrode directly connects adjacent solar cell and obtains solar module.
Described wire electrode constitutes by scribbling the wire that contains silver paste, and the described silver paste that contains is wrapped up in and is located at outside the wire, and wire electrode forms good Ohmic contact and strong bonded through high temperature sintering more than 700 ℃ and solar battery surface.
Described contain antireflection film layer that silver paste penetrates solar battery surface, and solar cell Si semiconductor interface between form good Ohmic contact, contain silver paste with wire be wrapped in interior, it is combined firmly with solar cell.
Described wire is the wire with satisfactory electrical conductivity, comprises filamentary silver, copper wire or aluminium wire.
Described wire electrode is respectively as the front electrode and the back electrode of adjacent solar cell, thereby two solar cells are connected.
A kind of manufacture method with silicon solar cell of wire electrode is characterized in that, this method may further comprise the steps:
(1) spreads N type layer and deposit antireflective coating in the front of P type silicon substrate, back face printing back of the body field, then wire electrode is arranged in the solar cell front, by the high temperature sintering more than 700 ℃ itself and solar battery surface are combined closely, form good Ohmic contact, obtain the solar cell front electrode;
(2) extension with solar cell front metal silk electrode places the adjacent solar cell back side, makes itself and the back of solar cell formation back electrode of combining closely by the high temperature sintering more than 700 ℃, promptly obtains product.
Step (1) and step (2) can be carried out simultaneously, and repeating step (1), (2) can obtain having the silicon solar cell assembly of wire electrode.
Compared with prior art, the present invention has the following advantages:
(1) the present invention adopts and has the wire of satisfactory electrical conductivity as solar cel electrode, wire diameter is much smaller than the width of printed silver electrode on the one hand, and saved the main grid line of wider width, therefore reduced the shading area of electrode part, the light that has increased solar cell utilizes area, has increased the absorption of incident light probability; Electric conductivity wiry on the other hand obviously is better than the silver slurry, has weakened the power loss on the electrode.Adopt wire electrode, the moire grids density that can be multiplied is particularly useful for the high square resistance diffusion layer, and the solar cell conversion efficiency is significantly improved;
(2) the present invention adopts and contains silver paste metallizing silk, by high temperature sintering, contains silver paste and penetrates antireflective coating and solar battery surface formation good Ohmic contact, and wire is wrapped, and it is combined with solar cell firmly;
(3) the present invention adopts wire electrode, respectively as the front electrode and the back electrode of two solar cells, can realize the serial connection of solar cell in the solar cel electrode manufacture process.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the cross section structure schematic diagram of single solar cell;
Fig. 3 is the solar module schematic diagram.
1 for N type layer, 7 for P type silicon substrate, 8 for the back of the body, 9 is busbar for antireflective coating, 6 for containing silver paste, 4 for wire, 5 for wire electrode, 3 for solar cell, 2 among the figure.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
A kind of silicon solar cell with wire electrode, its structure are shown in Fig. 1～2, and in the production process, according to actual conditions, parameters such as reference solar cell electric current, shading area, electrode conductance rate design the required quantity of wire electrode 2.Fig. 1 three one metal wire electrodes 2 that only draw in being are used to illustrate.
Adopt solar cel electrode of the present invention, can a step realize the manufacturing of solar cel electrode and the serial connection of battery.Adopt the solar cell of electrode structure of the present invention, the part that the back electrode of solar cell 1 can be stretched out the battery outside by the front electrode of adjacent a slice solar cell 1 constitutes.In process of production, wire electrode 2 is placed the plane of illumination of solar cell 1, the extension of the front electrode of adjacent a slice solar cell 1 is placed the assigned address of back of solar cell, simultaneously the wire electrode 2 on two sides is heated to and carries out high temperature sintering more than 700 ℃, obtain the front electrode and the back electrode of solar cell, and finish the serial connection of two solar cells.Repeat aforesaid operations, the solar cell of requirement is connected into string, the solar battery string that connects is by busbar 9 projected currents of both sides, as shown in Figure 3.
A kind of silicon solar cell with wire electrode, the electrode of this silicon solar cell is made of wire electrode and printed silver electrode respectively, the plane of illumination of solar cell is coated with wire electrode, front electrode as solar cell, this wire electrode and solar battery surface form good Ohmic contact, and the back electrode of solar cell is the silver electrode of conventional printing.The back silver electrode links to each other by the wire electrode of interconnecting strip with the adjacent solar cell front, and two batteries are together in series.
Below only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the present invention's scope required for protection.
Claims (10)
1. silicon solar cell with wire electrode, it is characterized in that, the electrode of this silicon solar cell is made of wire electrode (2), the plane of illumination of solar cell (1) is coated with wire electrode (2), described wire electrode (2) forms ohmic contact with solar cell (1) surface, and the photogenerated current that solar cell (1) produces is directly derived by wire electrode (2).
2. a kind of silicon solar cell with wire electrode according to claim 1 is characterized in that the plane of illumination of described solar cell (1) is coated with wire electrode (2), as the front electrode of solar cell (1).
3. a kind of silicon solar cell with wire electrode according to claim 1 is characterized in that, the back electrode of described solar cell (1) is the silver electrode of wire electrode (2) or conventional printing.
4. a kind of silicon solar cell with wire electrode according to claim 1 is characterized in that, described wire electrode (2) directly connects adjacent solar cell (1) and obtains solar module.
5. a kind of silicon solar cell according to claim 1 with wire electrode, it is characterized in that, described wire electrode (2) constitutes by scribbling the wire (4) that contains silver paste (3), the described silver paste (3) that contains is wrapped up in and is located at outside the wire (4), and wire electrode (2) forms good Ohmic contact and strong bonded through high temperature sintering more than 700 ℃ and solar cell (1) surface.
6. a kind of silicon solar cell according to claim 5 with wire electrode, it is characterized in that, described contain antireflection film layer that silver paste (3) penetrates solar cell (1) surface, and solar cell (1) Si semiconductor interface between form good Ohmic contact, contain silver paste (3) with wire be wrapped in interior, it is combined firmly with solar cell (1).
7. a kind of silicon solar cell with wire electrode according to claim 5 is characterized in that, described wire (4) comprises filamentary silver, copper wire or aluminium wire for having the wire of satisfactory electrical conductivity.
8. a kind of silicon solar cell with wire electrode according to claim 5 is characterized in that, described wire electrode (2) is respectively as the front electrode and the back electrode of adjacent solar cell (1), thereby two solar cells (1) are together in series.
9. manufacture method with silicon solar cell of wire electrode as claimed in claim 1 is characterized in that this method may further comprise the steps:
(1) spreads N type layer (6) and deposit antireflective coating (5) in the front of P type silicon substrate (7), the back face printing back of the body (8), then wire electrode (2) is arranged in solar cell (1) front, by the high temperature sintering more than 700 ℃ combined closely in itself and solar cell (1) surface, form good Ohmic contact, obtain solar cell (1) front electrode;
(2) extension with solar cell (1) front metal silk electrode (2) places adjacent solar cell (1) back side, makes itself and solar cell (1) back side formation back electrode of combining closely by the high temperature sintering more than 700 ℃, promptly obtains product.
10. a kind of manufacture method according to claim 9 with silicon solar cell of wire electrode, it is characterized in that, step (1) and step (2) can be carried out simultaneously, and repeating step (1), (2) can obtain having the silicon solar cell assembly of wire electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010619332 CN102148264A (en) | 2010-12-30 | 2010-12-30 | Silicon solar battery with wire electrode and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010619332 CN102148264A (en) | 2010-12-30 | 2010-12-30 | Silicon solar battery with wire electrode and manufacturing method thereof |
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| CN102148264A true CN102148264A (en) | 2011-08-10 |
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| CN 201010619332 Pending CN102148264A (en) | 2010-12-30 | 2010-12-30 | Silicon solar battery with wire electrode and manufacturing method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569438A (en) * | 2012-01-31 | 2012-07-11 | 乐山职业技术学院 | Solar cell capable of saving silver paste and preparation process thereof |
| CN102623519A (en) * | 2012-03-21 | 2012-08-01 | 日地太阳能电力股份有限公司 | Efficient solar cell structure |
| CN102800712A (en) * | 2012-07-16 | 2012-11-28 | 杭州塞利仕科技有限公司 | Solar cell positive electrode structure and manufacturing method thereof |
| CN102810577A (en) * | 2012-08-13 | 2012-12-05 | 中利腾晖光伏科技有限公司 | Hybrid back electrode cell |
| CN103367546A (en) * | 2013-07-12 | 2013-10-23 | 余小翠 | Preparation technology of photovoltaic battery front-face electrode |
| CN103400870A (en) * | 2013-08-02 | 2013-11-20 | 浙江正泰太阳能科技有限公司 | Solar cell, electrode pattern design thereof and solar cell assembly |
| CN104752533A (en) * | 2014-12-31 | 2015-07-01 | 苏州润阳光伏科技有限公司 | Gate line structure of solar cell |
| CN105874609A (en) * | 2014-01-13 | 2016-08-17 | 光城公司 | Module fabrication of solar cells with low resistivity electrodes |
| CN107845691A (en) * | 2016-09-19 | 2018-03-27 | 浙江凯盈新材料有限公司 | The material coated with glassy metal for electrode of solar battery |
| US10749061B1 (en) | 2019-05-23 | 2020-08-18 | Zhejiang Kaiying New Materials Co., Ltd. | Solar cell edge interconnects |
| US10749045B1 (en) | 2019-05-23 | 2020-08-18 | Zhejiang Kaiying New Materials Co., Ltd. | Solar cell side surface interconnects |
| US11125389B2 (en) | 2016-12-20 | 2021-09-21 | Zhejiang Kaiying New Materials Co., Ltd. | Interdigitated back contact metal-insulator-semiconductor solar cell with printed oxide tunnel junctions |
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| CN101911309A (en) * | 2007-12-27 | 2010-12-08 | 株式会社东进世美肯 | Conductive glass for dye-sensitized solar cell and manufacturing method thereof |
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| CN1147157A (en) * | 1995-06-28 | 1997-04-09 | 佳能株式会社 | Photovoltaic cell and method of making the same |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569438B (en) * | 2012-01-31 | 2014-03-05 | 乐山职业技术学院 | Solar cell capable of saving silver paste and preparation process thereof |
| CN102569438A (en) * | 2012-01-31 | 2012-07-11 | 乐山职业技术学院 | Solar cell capable of saving silver paste and preparation process thereof |
| CN102623519A (en) * | 2012-03-21 | 2012-08-01 | 日地太阳能电力股份有限公司 | Efficient solar cell structure |
| CN102800712B (en) * | 2012-07-16 | 2015-09-30 | 杭州塞利仕科技有限公司 | A kind of solar battery sheet electrode structure at right side and preparation method thereof |
| CN102800712A (en) * | 2012-07-16 | 2012-11-28 | 杭州塞利仕科技有限公司 | Solar cell positive electrode structure and manufacturing method thereof |
| WO2014012432A1 (en) * | 2012-07-16 | 2014-01-23 | 杭州塞利仕科技有限公司 | Front-side electrode structure of solar cell sheet and fabrication method therefor |
| CN102810577A (en) * | 2012-08-13 | 2012-12-05 | 中利腾晖光伏科技有限公司 | Hybrid back electrode cell |
| CN103367546A (en) * | 2013-07-12 | 2013-10-23 | 余小翠 | Preparation technology of photovoltaic battery front-face electrode |
| CN103400870A (en) * | 2013-08-02 | 2013-11-20 | 浙江正泰太阳能科技有限公司 | Solar cell, electrode pattern design thereof and solar cell assembly |
| CN105874609A (en) * | 2014-01-13 | 2016-08-17 | 光城公司 | Module fabrication of solar cells with low resistivity electrodes |
| CN105874609B (en) * | 2014-01-13 | 2017-10-20 | 光城公司 | The modular manufacture of solar energy battery core with low resistance electrode |
| CN104752533A (en) * | 2014-12-31 | 2015-07-01 | 苏州润阳光伏科技有限公司 | Gate line structure of solar cell |
| CN104752533B (en) * | 2014-12-31 | 2017-04-12 | 苏州润阳光伏科技有限公司 | Gate line structure of solar cell |
| CN107845691A (en) * | 2016-09-19 | 2018-03-27 | 浙江凯盈新材料有限公司 | The material coated with glassy metal for electrode of solar battery |
| CN112038453A (en) * | 2016-09-19 | 2020-12-04 | 浙江凯盈新材料有限公司 | Metallic glass coated material for solar cell electrodes |
| CN112038453B (en) * | 2016-09-19 | 2022-04-15 | 浙江凯盈新材料有限公司 | Metallic glass coated material for solar cell electrodes |
| US11125389B2 (en) | 2016-12-20 | 2021-09-21 | Zhejiang Kaiying New Materials Co., Ltd. | Interdigitated back contact metal-insulator-semiconductor solar cell with printed oxide tunnel junctions |
| US11746957B2 (en) | 2016-12-20 | 2023-09-05 | Zhejiang Kaiying New Materials Co., Ltd. | Interdigitated back contact metal-insulator-semiconductor solar cell with printed oxide tunnel junctions |
| US10749061B1 (en) | 2019-05-23 | 2020-08-18 | Zhejiang Kaiying New Materials Co., Ltd. | Solar cell edge interconnects |
| US10749045B1 (en) | 2019-05-23 | 2020-08-18 | Zhejiang Kaiying New Materials Co., Ltd. | Solar cell side surface interconnects |
| US11043606B2 (en) | 2019-05-23 | 2021-06-22 | Zhejiang Kaiying New Materials Co., Ltd. | Solar cell edge interconnects |
| US11189738B2 (en) | 2019-05-23 | 2021-11-30 | Zhejiang Kaiying New Materials Co., Ltd. | Solar cell side surface interconnects |
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Application publication date: 20110810 |