CN104600132A - Electrode structure and solar cell using same - Google Patents
Electrode structure and solar cell using same Download PDFInfo
- Publication number
- CN104600132A CN104600132A CN201310526115.XA CN201310526115A CN104600132A CN 104600132 A CN104600132 A CN 104600132A CN 201310526115 A CN201310526115 A CN 201310526115A CN 104600132 A CN104600132 A CN 104600132A
- Authority
- CN
- China
- Prior art keywords
- diffusion zone
- electrode
- solar cell
- contact
- bus electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 214
- 230000004888 barrier function Effects 0.000 claims description 20
- 230000000694 effects Effects 0.000 description 17
- 238000003466 welding Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- -1 deposition Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses an electrode structure comprising a first conductive electrode and a second conductive electrode. The first conductive electrode comprises a first bus electrode and first finger electrodes. The part of the first bus electrode above a first diffusion region is in electrical contact with the first diffusion region through first contact points, and the part of the first bus electrode above a second diffusion region is electrically insulated from the second diffusion region. The second conductive electrode comprises a second bus electrode and second finger electrodes. The part of the second bus electrode above the second diffusion region is in electrical contact with the second diffusion region through second contact points, and the part of the second bus electrode above the first diffusion region is electrically insulated from the first diffusion region. The first finger electrodes and the second finger electrodes are respectively and electrically connected with the first diffusion region and the second diffusion region.
Description
Technical field
The invention relates to a kind of back-contact electrode formula solar cell, particularly there is the solar cell of the electrode structure that can reduce electrical screen effect.
Background technology
In the back-contact electrode formula solar cell in conjunction with N-type substrate operates, minority carrier (electric hole) is collected by diffusion region, P pole, through P pole conductive electrode, collected minority carrier is conducted to plus end again, collect most carrier (electronics) by N pole diffusion zone, then through N pole conductive electrode, collected most carriers are conducted to negative terminal.But, when the N pole diffusion zone of N-type substrate collects most carrier, the height in this region mixes and the gathering of most carrier (electronics) makes minority carrier (electric hole) more easily compound occur at N pole diffusion zone and cannot be converted to electric current, and this effect is called electrical screen effect (electrical shading effect).Electrical screen effect can cause the reduction of the conversion efficiency of solar cell, and therefore how reducing electrical shield effect is one of problem needing at present to solve.General way is reduce the area ratio of N pole diffusion zone as far as possible, but the area ratio reducing N pole diffusion zone can affect again the conduction resistance of most carrier (electronics), only between both effects, can accomplish optimal design as far as possible.
Fig. 1 shows the plane graph of traditional back-contact electrode formula solar cell.As shown in Figure 1, conventional solar cell 10 mainly comprises diffusion region, N pole 101, diffusion region, P pole 102, N pole contact point 103, P pole contact point 104, N pole conductive electrode 105 and P pole conductive electrode 106.N pole diffusion zone 101 is pectination arrangement, and P pole diffusion zone 102 is then surrounded on N pole diffusion zone 101.N pole conductive electrode 105 only stacks on N pole diffusion zone 101, and P pole conductive electrode 106 only stacks on P pole diffusion zone 102.In addition, N pole conductive electrode 105 comprises a plurality of N poles finger electrode 1052 further and stacks on N pole diffusion zone 101 with N pole bus electrode 1054, and P pole conductive electrode 106 comprises plural P pole finger electrode 1062 further and stacks on P pole diffusion zone 102 with P pole bus electrode 1064.Allow N pole diffusion zone 101 can be in electrical contact with N pole conductive electrode 105 through N pole contact point 103, allow P pole diffusion zone 102 can be in electrical contact with P pole conductive electrode 106 through P pole contact point 104.
N pole diffusion zone 101 is that the impact of the conversion efficiency that the relatively large area of N pole diffusion zone below the generation area of electrical shield effect, particularly N pole bus electrode 1054 produces is more remarkable as seen from Figure 1.Large area P pole diffusion zone in addition below P pole bus electrode 1064 is also unfavorable for most carrier (electronics) conduction in this region, causes the increase of series resistance also to damage the conversion efficiency of cell piece further.The visible adverse effect how improving N pole and bus electrode diffuse underneath region, P pole, has it to be worth and necessity.
Fig. 2 A, Fig. 2 B and Fig. 2 C show traditional manufacturer respectively for solving the schematic diagram of the electrode structure of the solar cell designed by electrical shield effect.As shown in Figure 2 A, in this solar cell 20A, bus electrode 202A is the fringe region that triangular-arc strip pattern is arranged on solar cell 20A, welding contact position when the square pad comprising several increased area is in addition connected in series as cell piece.And the zone line of finger electrode 204A does not have the existence of any bus electrode 202A.Although such design tentatively decreases the area (namely decreasing the diffusion region area below bus electrode) of bus electrode 202A, improve electrical shield effect, but because finger electrode 204A is elongated to the distance of bus electrode 202A, electronics electricity hole can be increased to the transmission resistance of produced electric current.Fig. 2 B is the schematic diagram of the electrode structure of another back-contact electrode formula solar cell.As shown in Figure 2 B, SUNPOWER company discloses a kind of electrode structure (United States Patent (USP) 7 of solar cell, 804,022 notification number), in the electrode structure 20B of this solar cell, bus electrode 202B be reduced into square pattern and be arranged on the fringe region of solar cell 20B, and not having the existence of any bus electrode 202B at the zone line of finger electrode 204B.Revise again the arrangement of finger electrode 204B simultaneously, allow it be connected directly to square bus electrode 202B.Although such design reduces the area of bus electrode 202B as far as possible, namely reduce the area in bus electrode 202B diffuse underneath region, the impact of electrical screen effect can be reduced.But due to finger electrode 204B elongated to the distance of bus electrode 202B, can increase electronics electricity hole to the transmission resistance of produced electric current.And its bus electrode reduced is arranged on the fringe region of solar cell 20B, the difficulty (bus electrode 202B is also that the probe points location that efficiency measures is put simultaneously) that such arrangement measures except increasing efficiency, also produces technical limitations during cell piece series set.(United States Patent (USP) 7 as shown in Figure 2 C, 390,961 notification numbers) the electrode structure 20C of solar cell, the cell piece bus electrode 202C of design like this cannot adopt traditional series welding technology and the special welding 204C that must arrange in pairs or groups designs with solder technology to realize being connected in series of cell piece.The welding design being only welded on cell piece bus electrode 202C edge cannot extend within welding enters cell piece as traditional series welding technology, and the extension of welding 204C therefore also cannot be utilized to reduce series resistor further.
Therefore there is a kind of electrode structure of Demand Design solar cell, when not reducing bus electrode area, the electrical screen effect of back-contact electrode formula solar cell can be improved, promote the performance of solar cell.And the nearly step-down of traditional welding series welding technology low series resistor lifting solar module usefulness can be continued to use.
Summary of the invention
Object of the present invention, at a kind of electrode structure of proposition, can improve the electrical screen effect of solar cell, promotes the performance of solar cell.
According to above-mentioned object, a kind of electrode structure is disclosed at this, described electrode structure is for a back-contact electrode formula solar cell, and described solar cell comprises at least one first diffusion zone, the second diffusion zone, a plurality of first make contact and a plurality of second contact point, described electrode structure comprises one first conductive electrode and one second conductive electrode.Described first conductive electrode comprises one first bus electrode, described first bus electrode is arranged at above described first diffusion zone and described second diffusion zone, described first bus electrode above described first diffusion zone through described a plurality of first make contact and described first diffusion zone in electrical contact, described first bus electrode above described second diffusion zone and described second diffusion zone are electrically insulated; And a plurality of first finger electrode, described first finger electrode is arranged at above described first diffusion zone, and be electrically connected with described first bus electrode, through described a plurality of first make contact make described first finger electrode and described first diffusion zone in electrical contact.Described second conductive electrode comprises one second bus electrode, described second bus electrode is arranged at above described first diffusion zone and described second diffusion zone, described second bus electrode above described second diffusion zone through described a plurality of second contact point and described second diffusion zone in electrical contact, described second bus electrode above described first diffusion zone and described first diffusion zone are electrically insulated; And a plurality of second finger electrode, described second finger electrode is arranged at above described second diffusion zone, and be electrically connected with described second bus electrode, through described a plurality of second contact point make described second finger electrode and described second diffusion zone in electrical contact.
Another object of the present invention is at a kind of solar cell using this electrode structure of proposition, through this electrode structure, under the fabrication steps not changing solar cell, can reach the electrical screen effect improving solar cell, the low conduction resistance of a step-down of going forward side by side is to promote the performance of solar cell
According to above-mentioned object, disclose a kind of back-contact electrode formula solar cell at this and comprise at least one first diffusion zone, the second diffusion zone, an insulating barrier, a plurality of first make contact, a plurality of second contact point, one first conductive electrode and one second conductive electrode.Second diffusion zone is around described at least one first diffusion zone.Insulating barrier is arranged at above described first diffusion zone and described second diffusion zone, and comprise a plurality of first perforation and a plurality of second to bore a hole, described a plurality of first perforation exposes described first diffusion zone, described a plurality of second perforation exposure second diffusion zone.A plurality of first make contact is arranged in described a plurality of first perforation, and a plurality of second contact point is arranged in described a plurality of second perforation.First conductive electrode is arranged at above described first diffusion zone and described second diffusion zone, described first conductive electrode above described first diffusion zone through described a plurality of first make contact and described first diffusion zone in electrical contact, described first conductive electrode above described second diffusion zone is electrically insulated by described insulating barrier and described second diffusion zone.Second conductive electrode is arranged at above described first diffusion zone and described second diffusion zone, described second conductive electrode above described second diffusion zone through described a plurality of second contact point and described second diffusion zone in electrical contact, described second bus electrode above described first diffusion zone is electrically insulated by described insulating barrier and described first diffusion zone.
Accompanying drawing explanation
Fig. 1 shows the plane graph of conventional back contact electrode solar cell;
Fig. 2 A shows the plane graph of conventional back contact electrode solar cell;
Fig. 2 B shows the plane graph of another conventional back contact electrode solar cell;
The back-contact electrode solar cell that Fig. 2 C shows conventional reference example is connected in series the schematic diagram being connected in series welding with particular design;
Fig. 3 shows the schematic diagram of the back-contact electrode solar energy of present pre-ferred embodiments;
Fig. 4 A shows the profile got along the AA ' line of the solar cell of Fig. 3;
Fig. 4 B shows the profile got along the BB ' line of the solar cell of Fig. 3; And
Fig. 5 shows the electrical comparison diagram of the experimental result of the electrode structure of solar cell of the present invention and the electrode structure of conventional solar cell.
Embodiment
The explanation of following embodiment is graphic with reference to what add, can in order to the specific embodiment implemented in order to illustrate the present invention.The direction term that the present invention mentions, such as " on ", D score, "front", "rear", "left", "right", " interior ", " outward ", " side " etc., be only the direction with reference to annexed drawings.Therefore, the direction term of use is in order to illustrate and to understand the present invention, and is not used to limit the present invention.In the drawings, the unit of structural similarity represents with identical label.
Fig. 3 shows the schematic diagram of the solar cell of the embodiment of the present invention.As shown in Figure 3, solar cell 30 mainly comprises the first diffusion zone 301, second diffusion zone 302, first make contact 303 and the second contact point 304.First diffusion zone 301 is N pole diffusion zone, can be described as base diffusion regions again.Second diffusion zone 302 is P pole diffusion zone around the first diffusion zone 301, second diffusion zone 302, can become emitter-base bandgap grading diffusion zone again.First diffusion zone 301 is preferably strip in an embodiment of the present invention, and the second diffusion zone 302 is surrounded on the first diffusion zone 301.But in different embodiments, the first diffusion zone 301 can be different blob-like shapes, does not limit at this.In addition, the quantity of the first diffusion zone 301 can be one or more in an embodiment of the present invention, do not limit at this, and first diffusion zone 301 be longitudinal sequential in this embodiment, for horizontal sequential or can be staggered in different embodiments, first diffusion zone 301 can be even irregular alignment, does not limit at this.First make contact 303 and the second contact point 304 are arranged at the top of the first diffusion zone 301 and the second diffusion zone 302 respectively, same first make contact 303 and the second contact point 304 can become N pole contact point and P pole contact point respectively, or base contact and emitter contact point.
Still consult Fig. 3, the electrode structure of solar cell 30 can comprise the first conductive electrode 305 and the second conductive electrode 306.First conductive electrode 305 of a part is overlapped above described first diffusion zone 301, first conductive electrode 305 of a part is overlapped above described second diffusion zone 302, second conductive electrode 306 of a part is overlapped above described first diffusion zone 301, and the second conductive electrode 306 of a part is overlapped above described second diffusion zone 302.First conductive electrode 305 and the second conductive electrode 306 are respectively N pole conductive electrode and P pole conductive electrode, or base stage conductive electrode and emitter-base bandgap grading conductive electrode.The first conductive electrode 305 above the first diffusion zone 301 through first make contact 303 and the first diffusion zone 301 in electrical contact, and the first conductive electrode 305 above the second diffusion zone 302, because do not arrange first make contact 303 or the second contact point 304, the first conductive electrode 305 above the second diffusion zone 302 can not be in electrical contact with the second diffusion zone 302.Equally, the second conductive electrode 306 above the second diffusion zone 302 through the second contact point 304 and the second diffusion zone 302 in electrical contact, and the second conductive electrode 306 above the first diffusion zone 301, because do not arrange first make contact 303 or the second contact point 304, the second conductive electrode 306 above the first diffusion zone 301 can not be in electrical contact with the first diffusion zone 301.
In addition, first conductive electrode 305 can be divided into the first bus electrode (busbarelectrode) 3052 and a plurality of first finger electrode (finger electrode) 3054, second conductive electrode 306 can be divided into the second bus electrode 3062 and a plurality of second finger electrode 3064 further further.Can obviously be found out by the embodiment of Fig. 3, because the first diffusion zone 301 is longitudinal sequential, the first finger electrode 3054 is also longitudinal sequential and overlapped above the first diffusion zone 301.And the second finger electrode 3064 and the first finger electrode 3054 are for being longitudinally staggered, the second finger electrode 3064 and the first finger electrode 3054 also can arrange for noninterlace in different embodiments, do not limit at this.First bus electrode 3052 and the second bus electrode 3062 are arranged in parallel, are arranged at the two ends of the first diffusion zone 301 respectively, and laterally cross at least one first diffusion zone 301 respectively.Furthermore, first finger electrode 3054 and the second finger electrode 3064 are arranged at the top of the first diffusion zone 301 and the second diffusion zone 302 respectively, and through first make contact 303 allow the first finger electrode 3054 and the first diffusion zone 301 in electrical contact, through the second contact point 304 allow the second finger electrode 3064 and the second diffusion zone 302 in electrical contact.And the first bus electrode 3052 is arranged at above the first diffusion zone 301 and the second diffusion zone 302, the second bus electrode 3062 is also arranged at above the first diffusion zone 301 and the second diffusion zone 302.The first bus electrode 3052 above the first diffusion zone 301 through first make contact 303 and the first diffusion zone 301 in electrical contact, and the region that the first bus electrode 3052 and the second diffusion zone 301 overlap, because arrange insulating barrier (not shown) between the first bus electrode 3052 and the second diffusion zone 302, and between the first bus electrode 3052 and the second diffusion zone 302, do not have the setting of first make contact 303 or the second contact point 304, therefore the overlapping area of the first bus electrode 3052 and the second diffusion zone 302 can not do in electrical contact.In like manner, the second bus electrode 3062 above described second diffusion zone 302 through the second contact point 304 and the second diffusion zone 302 in electrical contact, and the region that the second bus electrode 3062 and the first diffusion zone 301 overlap, because arrange insulating barrier (not shown) between the second bus electrode 3062 and the first diffusion zone 301, and between the second bus electrode 3062 and the first diffusion zone 301, do not have the setting of first make contact 303 or the second contact point 304, therefore the overlapping area of the second bus electrode 3062 and the first diffusion zone 301 can not do in electrical contact.Compared to the conventional solar cell shown in Fig. 1, the area of the first diffusion zone 301 below the first bus electrode 3052 is significantly reduced, and therefore improves electrical screen effect, promotes the conversion usefulness of solar cell.And also shorten the move distance of most carrier (electronics) in this region below the second bus electrode 3062 because having interted the first diffusion zone 301 and reduce conduction resistance, further promote the usefulness of solar cell.Not quite, the electrode structural designs of above, the processing procedure that significantly need not change solar cell can complete the structure of solar cell of the present invention for the structure of the solar cell 30 in the embodiment of the present invention and the architectural difference of traditional solar cell.
Fig. 4 A and Fig. 4 B shows the profile that AA ' line and BB ' line along the solar cell of Fig. 3 are got respectively.As shown in Figure 4 A, first form the first diffusion zone 301 and the second diffusion zone 302 on the solar cell, by first forming the second diffusion zone 302, then the subregion of the second diffusion zone 302 is hollowed out an opening that pluralizes, then form the first diffusion zone 301.Then, insulating barrier 307 is formed above the first diffusion zone 301 and the second diffusion zone 302, insulating barrier 307 has a plurality of first perforation 3072, described a plurality of first perforation 3072 can the first diffusion zone 301 of expose portion, and then fills conductive metal material to form a plurality of first make contact 303 in a plurality of first perforation 3072.Finally above insulating barrier 307 with a plurality of first make contact 303, form the first conductive electrode 305, complete the solar battery structure of the present invention at AA ' line.And, can obviously find out by Fig. 4 A, because arrange first make contact 303 above the first diffusion zone 301, allow the first diffusion zone 301 can be in electrical contact with the first conductive electrode 305, and first make contact 303 or the second contact point 304 are not set above second diffusion zone 302, only there is insulating barrier 307, make the second diffusion zone 302 and the first conductive electrode 305 can not do in electrical contact.
In like manner, as shown in Figure 4 B, after forming the first diffusion zone 301 and the second diffusion zone 302 on the solar cell, above the first diffusion zone 301 and the second diffusion zone 302, insulating barrier 307 is formed.Insulating barrier 307 has a plurality of second perforation 3074 equally, the second diffusion zone 302 of described a plurality of second perforation 3074 expose portions, then fills conductive metal material to form a plurality of second contact point 304 in a plurality of second perforation 3074.Finally above insulating barrier 307 with a plurality of second contact point 304, form the second conductive electrode 306, complete the solar battery structure of the present invention at BB ' line.Can obviously find out by Fig. 4 B, because arrange the second contact point 304 above the second diffusion zone 302, allow the second diffusion zone 302 can be in electrical contact with the second conductive electrode 306, and first make contact 303 or the second contact point 304 are not set above first diffusion zone 301, only there is insulating barrier 307, make the first diffusion zone 301 and the second conductive electrode 306 can not do in electrical contact.
In addition, it should be noted that at this, above-mentioned solar cell making step can come by manufacture of semiconductor such as deposition, coating, light shield, laser or etchings, and this manufacture of semiconductor is well known to those skilled in the art, and does not repeat them here.And solar cell is in an embodiment of the present invention preferably back-contact electrode formula solar cell, but do not limit at this.Fig. 5 shows the electrical comparison diagram of the experimental result of the electrode structure of solar cell of the present invention and the electrode structure of conventional solar cell.Can obviously be found out by Fig. 5, the switching current that the electrode structure of solar cell of the present invention obtains is higher than the electrode structure of traditional solar cell, electrode structure described in the visible embodiment of the present invention, the electrical screen effect of solar cell can be reduced, and the manufacturing process of solar cell originally need not be changed, the conversion efficiency improving solar cell can be reached equally.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention; persond having ordinary knowledge in the technical field of the present invention; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, therefore protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
Claims (10)
1. an electrode structure, described electrode structure is for a solar cell, and described solar cell comprises at least one first diffusion zone, one second diffusion zone, a plurality of first make contact and a plurality of second contact point, it is characterized in that, described electrode structure comprises:
One first conductive electrode, comprises:
One first bus electrode, described first bus electrode is arranged at above described first diffusion zone and described second diffusion zone, described first bus electrode above described first diffusion zone through described a plurality of first make contact and described first diffusion zone in electrical contact, described first bus electrode above described second diffusion zone and described second diffusion zone are electrically insulated; And
A plurality of first finger electrode, described a plurality of first finger electrode is arranged at above described first diffusion zone, and be electrically connected with described first bus electrode, through described a plurality of first make contact make described a plurality of first finger electrode and described first diffusion zone in electrical contact; And
One second conductive electrode, comprises:
One second bus electrode, described second bus electrode is arranged at above described first diffusion zone and described second diffusion zone, described second bus electrode above described second diffusion zone through described a plurality of second contact point and described second diffusion zone in electrical contact, described second bus electrode above described first diffusion zone and described first diffusion zone are electrically insulated; And
A plurality of second finger electrode, described a plurality of second finger electrode is arranged at above described second diffusion zone, and be electrically connected with described second bus electrode, through described a plurality of second contact point make described a plurality of second finger electrode and described second diffusion zone in electrical contact.
2. electrode structure according to claim 1, is characterized in that, described first diffusion zone is N pole diffusion zone, and described second diffusion zone is P pole diffusion zone.
3. electrode structure according to claim 1, it is characterized in that, described electrode structure more comprises an insulating barrier, described insulating barrier is arranged at above described first diffusion zone and described second diffusion zone, does in electrical contact with isolated described first diffusion zone and described second diffusion zone and described first conductive electrode and described second conductive electrode.
4. electrode structure according to claim 1, is characterized in that, described electrode structure is for a back-contact electrode formula solar cell.
5. a solar cell, is characterized in that, described solar cell comprises:
At least one first diffusion zone;
One second diffusion zone, around described at least one first diffusion zone;
One insulating barrier, described insulating barrier is arranged at above described first diffusion zone and described second diffusion zone, and comprise a plurality of first perforation and a plurality of second to bore a hole, described a plurality of first perforation exposes described first diffusion zone, and described a plurality of second perforation exposes described second diffusion zone;
A plurality of first make contact, is arranged in described a plurality of first perforation;
A plurality of second contact point, is arranged in described a plurality of second perforation;
One first conductive electrode, be arranged at above described first diffusion zone and described second diffusion zone, described first conductive electrode above described first diffusion zone through described a plurality of first make contact and described first diffusion zone in electrical contact, described first conductive electrode above described second diffusion zone is electrically insulated by described insulating barrier and described second diffusion zone; And
One second conductive electrode, be arranged at above described first diffusion zone and described second diffusion zone, described second conductive electrode above described second diffusion zone through described a plurality of second contact point and described second diffusion zone in electrical contact, described second bus electrode above described first diffusion zone is electrically insulated by described insulating barrier and described first diffusion zone.
6. solar cell according to claim 5, is characterized in that, described first conductive electrode comprises:
One first bus electrode, described first bus electrode is arranged at above described first diffusion zone and described second diffusion zone, described first bus electrode above described first diffusion zone through described a plurality of first make contact and described first diffusion zone in electrical contact, described first bus electrode above described second diffusion zone and described second diffusion zone are electrically insulated; And
A plurality of first finger electrode, described a plurality of first finger electrode is arranged at above described first diffusion zone, and be electrically connected with described first bus electrode, through described a plurality of first make contact make described a plurality of first finger electrode and described first diffusion zone in electrical contact.
7. solar cell according to claim 5, is characterized in that, described second conductive electrode comprises:
One second bus electrode, described second bus electrode is arranged at above described first diffusion zone and described second diffusion zone, described second bus electrode above described second diffusion zone through described a plurality of second contact point and described second diffusion zone in electrical contact, described second bus electrode above described first diffusion zone and described first diffusion zone are electrically insulated; And
A plurality of second finger electrode, described a plurality of second finger electrode is arranged at above described second diffusion zone, and be electrically connected with described second bus electrode, through described a plurality of second contact point make described a plurality of second finger electrode and described second diffusion zone in electrical contact.
8. solar cell according to claim 5, is characterized in that, described solar cell is a back-contact electrode formula solar cell.
9. solar cell according to claim 5, is characterized in that, described first diffusion zone is N pole diffusion zone, and described second diffusion zone is P pole diffusion zone.
10. solar cell according to claim 5, it is characterized in that, described a plurality of first make contact is a plurality of N poles contact points, described a plurality of second contact point is a plurality of P poles contact points, described first conductive electrode is N pole conductive electrode, and described second conductive electrode is P pole conductive electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526115.XA CN104600132A (en) | 2013-10-30 | 2013-10-30 | Electrode structure and solar cell using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526115.XA CN104600132A (en) | 2013-10-30 | 2013-10-30 | Electrode structure and solar cell using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104600132A true CN104600132A (en) | 2015-05-06 |
Family
ID=53125776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310526115.XA Pending CN104600132A (en) | 2013-10-30 | 2013-10-30 | Electrode structure and solar cell using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104600132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552137A (en) * | 2016-02-23 | 2016-05-04 | 深圳市创益科技发展有限公司 | Tiny chip electrode lead-out method of back-contact solar cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005122282A2 (en) * | 2004-06-04 | 2005-12-22 | Sunpower Corporation | Interconnection of solar cells in a solar cell module |
| CN101567401A (en) * | 2008-04-21 | 2009-10-28 | 三洋电机株式会社 | Solar cell module |
| WO2013014968A1 (en) * | 2011-07-28 | 2013-01-31 | 三洋電機株式会社 | Solar cell |
| CN103296136A (en) * | 2012-03-02 | 2013-09-11 | 三星Sdi株式会社 | Solar cell and fabrication method thereof |
-
2013
- 2013-10-30 CN CN201310526115.XA patent/CN104600132A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005122282A2 (en) * | 2004-06-04 | 2005-12-22 | Sunpower Corporation | Interconnection of solar cells in a solar cell module |
| JP2008502149A (en) * | 2004-06-04 | 2008-01-24 | サンパワー コーポレイション | Interconnection of solar cells in solar cell modules |
| CN101567401A (en) * | 2008-04-21 | 2009-10-28 | 三洋电机株式会社 | Solar cell module |
| WO2013014968A1 (en) * | 2011-07-28 | 2013-01-31 | 三洋電機株式会社 | Solar cell |
| CN103296136A (en) * | 2012-03-02 | 2013-09-11 | 三星Sdi株式会社 | Solar cell and fabrication method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552137A (en) * | 2016-02-23 | 2016-05-04 | 深圳市创益科技发展有限公司 | Tiny chip electrode lead-out method of back-contact solar cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101952972B (en) | Rear-contact solar cell having elongate, interdigital emitter and base regions on the rear side and method for producing the same | |
| EP2126978B1 (en) | Solar cell contact fingers and solder pad arrangement for enhanced efficiency | |
| CN114242810B (en) | Electrode structure of back contact battery, assembly and battery system | |
| JP4334455B2 (en) | Solar cell module | |
| US20110139241A1 (en) | Solar cell and method for producing a solar cell | |
| TWI603493B (en) | Solar cell and module comprising the same | |
| WO2009144996A1 (en) | Solar battery, method for manufacturing solar battery, and solar battery module | |
| US20160276499A1 (en) | Solar cell | |
| CN104641472A (en) | Radially arranged metal contact fingers for solar cells | |
| EP3096360A1 (en) | Solar cell and solar cell module | |
| KR20110122176A (en) | Solar battery module | |
| JP5819862B2 (en) | SOLAR CELL HAVING SPECIAL BUSLINE SHAPE, SOLAR CELL ARRAY INCLUDING THE SOLAR CELL, AND METHOD FOR PRODUCING A SOLAR CELL | |
| KR20120116120A (en) | Solar cell module and interconnector used in solar cell module | |
| JP3188303U (en) | Solar cell with improved electrode structure | |
| KR101542003B1 (en) | Solar cell module | |
| TWI496299B (en) | Electrode structure and solar cell using the same | |
| CN104600132A (en) | Electrode structure and solar cell using same | |
| WO2012128284A1 (en) | Rear surface electrode-type solar cell, manufacturing method for rear surface electrode-type solar cell, and solar cell module | |
| JP3181071U (en) | Solar cell and solar cell module | |
| US20230307559A1 (en) | A solar cell structure and a method of forming a solar cell structure | |
| EP3267492B1 (en) | Solar cell | |
| KR102185939B1 (en) | Solar cell module | |
| CN107924958B (en) | Photoelectric conversion element | |
| CN203491272U (en) | Back contact electrode solar cell | |
| JP2015162483A (en) | Solar battery cell, solar battery sub cell and solar battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150506 |