CN201732801U - Photovoltaic cell prepared by charge transfer method - Google Patents
Photovoltaic cell prepared by charge transfer method Download PDFInfo
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- CN201732801U CN201732801U CN201020293126XU CN201020293126U CN201732801U CN 201732801 U CN201732801 U CN 201732801U CN 201020293126X U CN201020293126X U CN 201020293126XU CN 201020293126 U CN201020293126 U CN 201020293126U CN 201732801 U CN201732801 U CN 201732801U
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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
- Y02E10/52—PV systems with concentrators
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The embodiment of the utility model discloses a photovoltaic cell prepared by a charge transfer method. The photovoltaic cell comprises a transparent substrate, a cell layer and a reflective coating layer. Silicon material is directly transferred onto transparent substrate material with low cost in the utility model, and a crystalline silicon layer is used as an activation layer of a solar cell. A reflective plastic layer arranged at the back surface of the cell layer is used for replacing a traditional back plate, thereby having good protective function and reducing the thickness of the photovoltaic cell at the same time. Therefore, on the basis of high performance and stability, the thickness and the cost of the photovoltaic cell are reduced.
Description
Technical field
The utility model relates to the photovoltaic technology field, more particularly, relates to a kind of photovoltaic cell that utilizes the method for charge transfer preparation.
Background technology
Present stage is along with the finiteness of conventional energy resource and the increase of environmental protection pressure, many countries have started the upsurge of development and utilization new forms of energy, wherein, solar energy is developed in the world fast as a kind of renewable and clean energy resource, particularly utilizes photovoltaic effect to provide the photovoltaic cell of green novel energy source to have broad application prospects.
The primary raw material of the photovoltaic cell that generally uses at present is silicon raw material, i.e. monocrystalline silicon or polysilicon.In the prior art, making after technologies such as purification, ingot casting, section, assembled battery sheet, assembled battery assembly through the silicon raw material becomes photovoltaic cell.The negative pole delete line of photovoltaic cell, main delete line and the band that confluxes are one deck with battery layers in the prior art, and the back side of photovoltaic cell is traditional backboard, so the thickness of photovoltaic cell is bigger, and cost is higher.
The utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of photovoltaic cell that utilizes the method for charge transfer preparation, and the thickness of the photovoltaic cell that the utility model provides is less, and cost is lower.
The utility model provides a kind of photovoltaic cell that utilizes the method for charge transfer preparation, comprising:
Transparent substrates;
Battery layers below described transparent substrates;
Reflective plastic layer below described battery layers.
Preferably, described reflective plastic layer is the white reflection plastic layer.
Preferably, the thickness of described battery layers is 10～20 μ m.
Preferably, the thickness of described battery layers is 12～18 μ m.
Preferably, the thickness of described battery layers is 14～16 μ m.
Preferably, described transparent substrates is a glass plate.
From above-mentioned technical scheme as can be seen, the photovoltaic cell that utilizes the method for charge transfer preparation that the utility model provides comprises transparent substrates, battery layers and reflecting coating layer.The utility model is directly transferred to silicon materials cheaply on the transparent substrates material, with the active coating of crystal silicon layer as solar cell; And utilize the reflective plastic layer at the battery layers back side to replace traditional backboard, reduced the thickness of photovoltaic cell when having good protective effect.Therefore, the photovoltaic cell that utilizes the method for charge transfer preparation that the utility model provides has reduced thickness and has reduced cost on the basis with high-performance and stability.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the disclosed photovoltaic cell schematic diagram 1 of the utility model embodiment;
Fig. 2 is the disclosed photovoltaic cell schematic diagram 2 of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model also provides a kind of photovoltaic cell that utilizes the method for charge transfer preparation, as shown in Figure 1 and Figure 2, comprising:
Transparent substrates 1;
Reflective plastic layer 3 below battery layers 2.
Transparent substrates 1 is preferably transparent panel, more preferably glass plate.On transparent substrates 1, adopt silver slurry printing negative pole delete line, main delete line and the band that confluxes, make transparent substrates and negative pole delete line, main delete line, confluxing to be with is integrated.
The utility model adopts reflective plastic layer 3 to be preferably the white reflection plastic layer.White reflection plastic layer 3 is a protective layer, preferably adopts the electrostatic spraying preparation.
The utility model has replaced traditional backboard at the reflective plastic layer of battery layers back side spraying, on the basis that does not influence generating efficiency, has reduced the thickness of crystal silicon cell, simplifies the structure and has reduced cost.
The photovoltaic cell that utilizes the method for charge transfer preparation that the utility model provides can be prepared as follows, and comprising:
Steps A: on transparent substrates, print negative pole delete line, main delete line and the band that confluxes with the silver slurry;
Step B: will be printed with negative pole delete line, main delete line in the steps A and the transparent substrates heating of the band that confluxes;
Step C: on the transparent substrates of described heating, be printed with negative pole grid line, main grid line and the one side deposition silicon layer of the band that confluxes;
Step D: silicon layer among the step C is handled, on the silicon layer after the described processing, formed anode;
Step e: the one side at described anode place sprays reflective plastic paint.
Described with silver-colored slurry printing negative pole delete line, main delete line and the preferred employing of the band method for printing screen printing of confluxing.
The temperature that heats among the described step B is preferably 520～600 ℃, more preferably 540～580 ℃, most preferably is 560 ℃.By with transparent substrates heating, make fine silver in the silver paste coating attached to substrate surface, thereby form the delete line and the band that confluxes.
Being printed with negative pole grid line, main grid line and the one side deposition silicon layer of the band that confluxes on the transparent substrates of described heating, wherein, is negative electrode with negative pole delete line, main delete line and the working face of being with that confluxes, and is anode with the polysilicon.Utilize electrochemical principle, the high-purity polycrystalline molecule constantly shifts to negative electrode from anode, thereby prepares the silicon chip that has carrier.Described silicon material sedimentation time is preferably 20～50 minutes, more preferably 25～45 minutes, most preferably is 35 minutes.The thickness of silicon material sedimentation time and silicon layer interrelates, and the silicon layer thickness that obtains after the described silicon material deposition is preferably 10～20 μ m, and more preferably 14～18 μ m most preferably are 16 μ m.The utility model is integrated delete line, main delete line and the band that confluxes with transparent substrates, need not to be provided with delete line, main delete line and conflux the band crystalline silicon material between transparent substrates and backboard, carry out lamination, preparation technology is simple, simultaneously, the preparation method who utilizes the utility model to provide can reduce the thickness of silicon layer on the basis that does not influence generating efficiency.
Step D preferably includes:
D1) silicon layer on the described transparent substrates being carried out making herbs into wool handles;
D2) silicon layer after the described making herbs into wool processing is carried out DIFFUSION TREATMENT;
D3) silicon layer after the described DIFFUSION TREATMENT is carried out etching processing;
D4) silicon layer after the described etching processing is carried out deposition processes;
D5) printed battery positive pole on the silicon layer after the described deposition processes is dried sintering then.
Can adopt traditional process for etching that the silicon layer on the described transparent substrates is carried out making herbs into wool among the step D1 and handle, can adopt the method for sour making herbs into wool or alkali making herbs into wool, by increase the sensitive surface of photovoltaic cell in silicon face making herbs into wool.Among the step D2, carry out DIFFUSION TREATMENT, make photovoltaic cell form the P-N knot and using P type silicon chip to prepare under the situation of solar cell, can carry out phosphorous diffusion at silicon face and form the N layer and finally form the P-N knot by the silicon layer after described making herbs into wool is handled.Under the situation of the preparation solar cell that uses N type silicon chip, carry out boron diffusion at silicon chip surface and form the P knot, finally form the P-N knot.The diffusion layer that forms on silicon chips periphery surface during diffusion can make the short circuit of battery upper/lower electrode, preferably adopts D3) silicon layer after the described DIFFUSION TREATMENT is carried out etching processing, can adopt and shelter wet etching or the plasma dry etching is removed peripheral diffusion layer.D4) in, the silicon layer after the described etching processing is carried out deposition processes, preferred using plasma strengthens chemical vapour deposition (CVD) (PECVD).Step D5) in, printed battery positive pole on the silicon layer after the described deposition processes is dried sintering then.The anodal preferred method that adopts silk screen printing of described printed battery.For described making herbs into wool processing, DIFFUSION TREATMENT, etching processing and deposition processes, be the common method of preparation photovoltaic cell.
One side at described anode place in the described step e sprays reflective plastic paint, and preferably the battery sheet that step D is obtained is put into the reflective plastic paint of electrostatic spraying under the electrostatic transfer condition.Described reflective plastic paint is preferably the white reflection plastic paint.The utility model adopts the method for sprayed coating that the photovoltaic cell for preparing is played a protective role, and need not to utilize traditional tabular backboard, and for example therefore the PST backboard, has reduced the thickness of photovoltaic cell, and has reduced cost.
Said method adopts silver slurry typography, printing negative pole delete line on transparent substrates, the main delete line and the band that confluxes, sharp then silicon materials are transferred to cheaply on the transparent substrates material by the principle of transfer of electric charge, make delete line, the main delete line and the band that confluxes are integrated with transparent substrates, need not to be provided with delete line, the crystalline silicon material of the main delete line and the band that confluxes carries out lamination between transparent substrates and backboard, preparation technology is simple, simultaneously, the preparation method who utilizes the utility model to provide can reduce the thickness of silicon layer on the basis that does not influence generating efficiency, thereby, the photovoltaic cell thickness of preparation is little, and cost is low.
In order to further specify the technical solution of the utility model, below in conjunction with embodiment the utility model preferred embodiment is described, but should be appreciated that these describe just to further specifying feature and advantage of the present utility model, rather than to the restriction of the utility model claim.
Embodiment
With ordinary plate glass as substrate, the substrate glass surface utilize method for printing screen with silver slurry print out negative pole delete line, main delete line, band confluxes;
Be printed with negative pole delete line, main delete line and the plate glass of the band that confluxes is heated to 560 ℃ and made fine silver in the silver paste coating attached to the substrate glass surface with above-mentioned, thereby form the delete line and the band that confluxes;
With the above-mentioned delete line that prints, the glass of being with that confluxes is placed in the electrolysis tank, with the negative pole delete line, the working face of the main delete line and the band that confluxes is a negative electrode, with the high-purity polycrystalline piece as anode, in electrolysis tank, add conductive liquid, the high-purity polycrystalline molecule constantly shifts to negative electrode, through when silicon layer thickness reaches uniform 16 μ m, forming the silicon chip that has carrier after 35 minutes, again silicon layer on glass being carried out making herbs into wool handles, forming the P-N knot through DIFFUSION TREATMENT, wet etching treatment, PECVD handles, and then utilize method for printing screen printed battery positive pole, heat once more and dry sintering, create battery sheet finished product;
The above-mentioned battery sheet that makes is put under the electrostatic transfer condition, utilized electrostatic spraying to spray the white reflection plastic paint overleaf, framing up prepares photovoltaic cell.
From technique scheme as can be seen, the photovoltaic cell that utilizes the method for charge transfer preparation that the utility model provides comprises substrate, battery layers and reflecting coating layer.The utility model is directly transferred to silicon materials cheaply on the backing material, with the crystal silicon layer of the relative thin active coating as solar cell; And utilize the reflective plastic layer at the battery layers back side to replace traditional backboard, reduced the thickness of photovoltaic cell when having good protective effect.Therefore, the photovoltaic cell that utilizes the method for charge transfer preparation that the utility model provides has reduced thickness and has reduced cost on the basis with high-performance and stability.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. a photovoltaic cell that utilizes the method for charge transfer preparation is characterized in that, comprising:
Transparent substrates;
Battery layers below described transparent substrates;
Reflective plastic layer below described battery layers.
2. photovoltaic cell according to claim 1 is characterized in that, described reflective plastic layer is the white reflection plastic layer.
3. photovoltaic cell according to claim 1 is characterized in that, the thickness of described battery layers is 10～20 μ m.
4. photovoltaic cell according to claim 3 is characterized in that, the thickness of described battery layers is 12～18 μ m.
5. photovoltaic cell according to claim 4 is characterized in that, the thickness of described battery layers is 14～16 μ m.
6. photovoltaic cell according to claim 1 is characterized in that, described transparent substrates is a glass plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020293126XU CN201732801U (en) | 2010-08-13 | 2010-08-13 | Photovoltaic cell prepared by charge transfer method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020293126XU CN201732801U (en) | 2010-08-13 | 2010-08-13 | Photovoltaic cell prepared by charge transfer method |
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| Publication Number | Publication Date |
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| CN201732801U true CN201732801U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020293126XU Expired - Fee Related CN201732801U (en) | 2010-08-13 | 2010-08-13 | Photovoltaic cell prepared by charge transfer method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931032A (en) * | 2010-08-13 | 2010-12-29 | 英利能源（中国）有限公司 | Method for preparing photovoltaic cell by charge transfer method and photovoltaic cell |
| CN103367493A (en) * | 2012-04-01 | 2013-10-23 | 陈志正 | Photovoltaic assembly |
-
2010
- 2010-08-13 CN CN201020293126XU patent/CN201732801U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931032A (en) * | 2010-08-13 | 2010-12-29 | 英利能源（中国）有限公司 | Method for preparing photovoltaic cell by charge transfer method and photovoltaic cell |
| CN101931032B (en) * | 2010-08-13 | 2012-10-03 | 英利能源（中国）有限公司 | Method for preparing photovoltaic cell by charge transfer method and photovoltaic cell |
| CN103367493A (en) * | 2012-04-01 | 2013-10-23 | 陈志正 | Photovoltaic assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN YINGLI NEW ENERGY CO., LTD. Free format text: FORMER OWNER: YINGLI ENERGY (CHINA) CO., LTD. Effective date: 20120518 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 071051 BAODING, HEBEI PROVINCE TO: 300201 HEXI, TIANJIN |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120518 Address after: 300201 Binhai science and Technology Park, Binhai hi tech Zone, 13888 Jin Han Road, Tianjin Patentee after: Tianjin Yingli New Energy Co.,Ltd. Address before: 071051 Chaoyang North Street, Hebei, Baoding, No. 3399 Patentee before: Yingli Energy (China) Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20160813 |
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| CF01 | Termination of patent right due to non-payment of annual fee |