CN114373867A - Perovskite solar cell gas tightness packaging structure - Google Patents
Perovskite solar cell gas tightness packaging structure Download PDFInfo
- Publication number
- CN114373867A CN114373867A CN202111541062.XA CN202111541062A CN114373867A CN 114373867 A CN114373867 A CN 114373867A CN 202111541062 A CN202111541062 A CN 202111541062A CN 114373867 A CN114373867 A CN 114373867A
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- Prior art keywords
- solar cell
- substrate
- perovskite solar
- silicon frame
- cover plate
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/88—Passivation; Containers; Encapsulations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
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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
- Y02E10/549—Organic PV cells
Abstract
The invention discloses an air tightness packaging structure of a perovskite solar cell. The package structure includes: a substrate, a silicon frame, a cover plate, etc. The substrate is a plate-shaped object, the perovskite solar cell is placed in the center of the upper surface of the substrate, the silicon frame is placed on the peripheral portion of the perovskite solar cell, and the welding pads are arranged on two sides of the perovskite solar cell. A layer of ultraviolet glue is coated between the silicon frame and the substrate and between the silicon frame and the cover plate; a die bonding material is arranged between the battery and the substrate; the gold wire is electrically connected with the bonding pad and the battery; the cover plate adopts an arc structure. The invention has simple packaging process and good air tightness. In addition, the structural form of the cover plate is reasonably utilized, and the range and the efficiency of the light absorption and utilization of the battery are increased.
Description
Technical Field
The invention relates to the field of electronic packaging, in particular to an airtight packaging structure of a perovskite solar cell.
Background
Perovskite is used as an artificial synthetic material, and after the perovskite is tried to be applied to the field of photovoltaic power generation for the first time in 2009, the perovskite has great splendid attire because of excellent performance, low cost and huge commercial value. The perovskite solar cell is a solar cell which uses perovskite type organic metal halide semiconductors as light absorption materials, and has higher photoelectric conversion efficiency and application prospect.
However, the perovskite solar cell has some problems at present, which restrict the large-area application of the perovskite solar cell. One of the core problems is the stability of the battery. There are many factors affecting the stability of the battery, one of which is environmental influence, including moisture, etc. And a relatively stable working environment is provided for the battery through an air tightness packaging technology, so that the stability of the battery is improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the perovskite solar cell air tightness packaging structure which is simple in packaging process, good in air tightness, capable of reasonably utilizing the structural form of the cover plate and capable of increasing the range and efficiency of light absorption and utilization of the cell.
In order to achieve the above object, the present invention provides a perovskite solar cell hermetic package structure, which is characterized in that: including base plate, silicon frame, gold thread, perovskite solar cell and apron:
the substrate is plate-shaped glass, a silicon frame is arranged on the periphery of the substrate, the perovskite solar cell is arranged in the center of the upper surface of the substrate, and welding pads are arranged on two sides of the perovskite solar cell; a solid crystal material is arranged between the substrate and the perovskite solar cell; perforating a region of the substrate where the bonding pad is placed to obtain a through hole; the bottom surface of the substrate is provided with two bonding pads, namely a positive bonding pad and a negative bonding pad, the inner wall of the through hole is plated with metal copper to realize electric connection, namely the bonding pads on the bottom surface of the substrate are respectively communicated with the bonding pads positioned on two sides of the perovskite solar cell through the through hole;
the silicon frame is made of silicon, the silicon frame is arranged around the outermost side of the upper surface of the substrate, the silicon frame and the substrate form a concave structure, and the concave structure is used for placing the perovskite solar cell; a drying agent is pasted inside the silicon frame;
the gold wire is used for electrically connecting the perovskite solar cell and the bonding pad, and the surface of the gold wire is covered with an insulating coating;
the perovskite solar cell is placed in the center of the upper surface of the substrate, and a solid crystal material is arranged between the perovskite solar cell and the substrate;
the cover plate is arranged on the silicon frame, and a layer of ultraviolet glue is smeared between the silicon frame and the cover plate and between the silicon frame and the substrate.
Preferably, the inside of the packaging structure is filled with CO2Or SF6To prevent the ingress of water oxygen.
Furthermore, the cover plate is made of glass materials with good light transmission, the cover plate adopts an arc structure in a structural form, and the cover plate is integrally a semi-cylindrical surface.
Further, the die bonding material is selected from any one of a gold-tin solder sheet or a soldering metal material without a flux.
Furthermore, the insulating coating material covered on the surface of the gold wire is silicon oxide or silicon nitride.
Furthermore, a drying agent is pasted inside the silicon frame to isolate the invasion of water.
Furthermore, ultraviolet curing glue is selected between the substrate and the silicon frame and between the silicon frame and the cover plate, and after the ultraviolet glue is coated, a 320-400 nm wavelength ultraviolet light source is used for controlling ultraviolet curing so as to realize low-temperature bonding.
The air tightness packaging structure of the perovskite solar cell mainly comprises a substrate, a silicon frame and a cover plate, wherein the silicon frame is arranged on the periphery of the upper surface of the substrate, the perovskite solar cell is arranged in the center of the upper surface of the substrate, and a solid crystal material is arranged between the perovskite solar cell and the substrate. The welding pads are positioned on two sides of the battery, two welding pads are arranged on the bottom surface of the substrate and comprise an anode welding pad and a cathode welding pad, the upper welding pad and the lower welding pad are perforated, and copper is electroplated on the inner wall of the through hole, so that the upper welding pad and the lower welding pad are electrically connected. The cover plate is made of glass materials with good light transmission, and meanwhile, in order to increase the effective utilization rate of light, the cover plate is in an arc-shaped structure, so that the light absorption range is enlarged. And the substrate and the silicon frame and the cover plate and the silicon frame are bonded by ultraviolet curing glue.
The invention has the following advantages and beneficial effects:
1. the perovskite solar cell is provided with a reliable air tightness protection device, and the influence of external water oxygen on the performance of the perovskite solar cell is avoided.
2. The arc-shaped structural form of the cover plate is reasonably utilized, and the range and the efficiency of light absorption and utilization are increased.
3. By utilizing the light-transmitting characteristic of glass and an ultraviolet curing technology, the low-temperature bonding of silicon and glass can be realized only under the condition of room temperature, simplicity, high efficiency and low cost.
4. The interior of the structure is filled with CO2 or SF6, and the water and oxygen are blocked to a certain extent.
5. The battery is not affected by water to a certain extent by utilizing the dewatering effect of the drying agent.
Drawings
FIG. 1 is a schematic structural diagram of a hermetic package casing for a perovskite solar cell;
FIG. 2 is a schematic view of a cover plate structure;
FIG. 3 is a schematic view of a substrate and a silicon frame structure;
FIG. 4 is a schematic structural diagram of a hermetic package casing for a perovskite solar cell with a desiccant.
In the figure: 1. the solar cell comprises a substrate, 2 parts of ultraviolet glue, 3 parts of a silicon frame, 4 parts of a drying agent, 5 parts of a bonding pad, 6 parts of a gold wire, 7 parts of a solid crystal material, 8 parts of a perovskite solar cell, 9 parts of a cover plate, 10 parts of copper, 11 parts of a through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
Example 1
As shown in fig. 1, the hermetic package structure of a perovskite solar cell mainly includes a substrate 1, a silicon frame 3, gold wires 6, a perovskite solar cell 8 and a cover plate 9.
The substrate 1 is a plate-shaped object, the material of the substrate is glass, the perovskite solar cell 8 is placed in the center of the upper surface of the substrate 1, the silicon frame 3 is placed on the peripheral portion of the upper surface of the substrate 1, and the welding pads 5 are respectively located on two sides of the perovskite solar cell 8. In order to realize the bonding between the cover plate and the silicon frame and between the substrate and the silicon frame, ultraviolet glue is coated at the bonding positions. Sealing is realized through the ultraviolet curing glue, namely, after the ultraviolet glue is spin-coated, an ultraviolet light source with a wave band of 320-400 nm can be used for controlling the ultraviolet glue to be cured, so that low-temperature bonding is realized.
A through hole 11 is obtained on the substrate 1 by adopting a dry etching method and is used as a signal transmission channel, and metal copper 10 is electroplated on the inner wall of the through hole.
The silicon frame 3 is made of silicon, the silicon frame 3 is arranged around the upper surface of the substrate 1, the silicon frame and the substrate form a concave structure in a surrounding mode, and the perovskite solar cell 8 and the welding pad 5 located on the surface of the substrate 1 are located in a concave area.
A die bonding material 7 (gold-tin solder sheet is selected in the embodiment) is arranged between the perovskite solar cell 8 and the substrate 1, and the perovskite solar cell is attached to the substrate 1 through the gold-tin solder sheet. Gold-tin solder pads are typically made using a gold-tin pre-form pad Au80Sn20 alloy solder.
The gold wire 6 is electrically connected with the perovskite solar cell 8 and the bonding pad 5 to realize the electrical connection between the cell and the inner wall of the through hole, the surface of the gold wire is covered with an insulating coating, the insulating coating is generally formed by processes such as electroplating, physical or chemical vapor deposition and the like, and the materials are silicon oxide, silicon nitride and the like.
The cover plate 9 is made of glass and is of an arc-shaped structure, the whole cover plate is a semi-cylindrical surface, and ultraviolet glue is coated between the cover plate 9 and the silicon frame to realize low-temperature bonding.
As can be seen from the above, the perovskite solar cell is firstly bonded on the substrate 1 through the crystal fixing material 7 (gold-tin solder sheet is selected in the embodiment), and then the SF6Or CO2Ring ofAnd under the circumstance, an ultraviolet light source with a wave band of 320-400 nm is used for controlling the ultraviolet glue 2 to be cured, so that the airtight packaging process of the perovskite solar cell is completed.
Fig. 4 is a modification of fig. 1, with a desiccant applied to the interior to further reduce the effect of water on the interior perovskite solar cell.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (7)
1. The utility model provides a perovskite solar cell gas tightness packaging structure which characterized in that: the solar cell comprises a substrate (1), a silicon frame (3), gold wires (6), a perovskite solar cell (8) and a cover plate (9):
the substrate (1) is plate-shaped glass, a silicon frame (3) is arranged on the periphery of the substrate (1), a perovskite solar cell (8) is arranged in the center of the upper surface of the substrate (1), and welding pads (5) are arranged on two sides of the perovskite solar cell (8); a crystal fixing material (7) is arranged between the substrate (1) and the perovskite solar cell (8); perforating a through hole (11) in the area of the substrate (1) where the pad (5) is placed; the bottom surface of the substrate (1) is provided with two bonding pads (5) which are respectively an anode bonding pad and a cathode bonding pad, the inner wall of the through hole (11) is plated with metal copper (10) to realize electric connection, namely the bonding pads (5) on the bottom surface of the substrate (1) are respectively conducted with the bonding pads (5) positioned on two sides of the perovskite solar cell (8) through the through hole (11);
the silicon frame (3) is made of silicon, the silicon frame (3) is arranged around the outermost side of the upper surface of the substrate (1), the silicon frame (3) and the substrate (1) form a concave structure, and the concave structure is used for placing the perovskite solar cell (8); a drying agent (4) is pasted in the silicon frame (3);
the gold wire (6) is used for electrically connecting the perovskite solar cell (8) and the bonding pad (5), and the surface of the gold wire (6) is covered with an insulating coating;
the perovskite solar cell (8) is placed in the center of the upper surface of the substrate (1), and a solid crystal material is arranged between the perovskite solar cell (8) and the substrate (1);
the cover plate (9) is arranged on the silicon frame (3), and a layer of ultraviolet glue is smeared between the silicon frame (3) and the cover plate (9) and between the silicon frame (3) and the substrate (1).
2. The perovskite solar cell hermetic package structure according to claim 1, wherein: filling the inside of the packaging structure with CO2Or SF6To prevent the ingress of water oxygen.
3. The perovskite solar cell hermetic package structure according to claim 1 or 2, characterized in that: the cover plate (9) is made of glass material with good light transmission, the cover plate (9) is of an arc structure in a structural form, and the cover plate (9) is integrally of a semi-cylindrical surface.
4. The perovskite solar cell hermetic package structure according to claim 3, wherein: the solid crystal material is any one of a gold-tin solder sheet or a soldering metal material without a soldering flux.
5. The perovskite solar cell hermetic package structure according to claim 1 or 2 or 4, characterized in that: the insulating coating material covered on the surface of the gold wire (6) is silicon oxide or silicon nitride.
6. The perovskite solar cell hermetic package structure according to claim 5, wherein: a drying agent is stuck inside the silicon frame (3) to isolate the invasion of water.
7. The perovskite solar cell hermetic package structure according to claim 1 or 2 or 4 or 6, characterized in that: ultraviolet curing glue is selected between the substrate (1) and the silicon frame (3) and between the silicon frame (3) and the cover plate (9), and after the ultraviolet curing glue is smeared, a 320-400 nm wavelength ultraviolet light source is used for controlling ultraviolet curing so as to realize low-temperature bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111541062.XA CN114373867B (en) | 2021-12-16 | 2021-12-16 | Perovskite solar cell gas tightness packaging structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111541062.XA CN114373867B (en) | 2021-12-16 | 2021-12-16 | Perovskite solar cell gas tightness packaging structure |
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| Publication Number | Publication Date |
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| CN114373867A true CN114373867A (en) | 2022-04-19 |
| CN114373867B CN114373867B (en) | 2023-04-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201113A (en) * | 2014-09-04 | 2014-12-10 | 中国电子科技集团公司第五十八研究所 | System-in-package type air-tightness sealing structure and manufacturing method thereof |
| CN104347528A (en) * | 2013-08-02 | 2015-02-11 | 矽品精密工业股份有限公司 | Semiconductor package and fabrication method thereof |
| CN106449542A (en) * | 2016-08-26 | 2017-02-22 | 深圳市五矿发光材料有限公司 | Package structure of semiconductor light-emitting chip with airtight window free of silica gel |
| CN108110145A (en) * | 2017-12-15 | 2018-06-01 | 京东方科技集团股份有限公司 | Display panel and method for packing, display device |
| WO2019039762A1 (en) * | 2017-08-22 | 2019-02-28 | 엘지전자 주식회사 | Solar cell and method for manufacturing same |
| US20190221692A1 (en) * | 2018-01-12 | 2019-07-18 | Jiaxiong Wang | Flexible Transparent-Semitransparent Hybrid Solar Window Membrane Module |
-
2021
- 2021-12-16 CN CN202111541062.XA patent/CN114373867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347528A (en) * | 2013-08-02 | 2015-02-11 | 矽品精密工业股份有限公司 | Semiconductor package and fabrication method thereof |
| CN104201113A (en) * | 2014-09-04 | 2014-12-10 | 中国电子科技集团公司第五十八研究所 | System-in-package type air-tightness sealing structure and manufacturing method thereof |
| CN106449542A (en) * | 2016-08-26 | 2017-02-22 | 深圳市五矿发光材料有限公司 | Package structure of semiconductor light-emitting chip with airtight window free of silica gel |
| WO2019039762A1 (en) * | 2017-08-22 | 2019-02-28 | 엘지전자 주식회사 | Solar cell and method for manufacturing same |
| CN108110145A (en) * | 2017-12-15 | 2018-06-01 | 京东方科技集团股份有限公司 | Display panel and method for packing, display device |
| US20190221692A1 (en) * | 2018-01-12 | 2019-07-18 | Jiaxiong Wang | Flexible Transparent-Semitransparent Hybrid Solar Window Membrane Module |
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| Publication number | Publication date |
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| CN114373867B (en) | 2023-04-07 |
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