CN114203919A - Hot-pressing self-packaging perovskite solar cell, cell module and preparation method - Google Patents
Hot-pressing self-packaging perovskite solar cell, cell module and preparation method Download PDFInfo
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Abstract
The invention provides a hot-pressing self-packaging perovskite solar cell, a cell module and a preparation method, wherein the preparation method comprises the following steps: and respectively preparing a first battery half piece and a second battery half piece, wherein the first battery half piece comprises a perovskite layer, the second battery half piece comprises a functional layer, the perovskite layer is attached to the functional layer after the first battery half piece and the second battery half piece are combined, and the hot-pressing preparation is carried out after the packaging glue is arranged to obtain the hot-pressing self-packaging perovskite solar battery. According to the invention, the two battery half pieces are subjected to hot-pressing self-packaging, the two battery half pieces can be respectively prepared, the preparation period is shortened, the perovskite layer is prepared after the charge transmission layer, the damage to the perovskite layer is not required to be considered, the functional layer is further arranged to be attached to the perovskite layer, the stability of the battery is increased, and the preparation cost is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of solar cells, and relates to a hot-pressing self-packaging perovskite solar cell, a cell module and a preparation method.
Background
Energy is an important driving force for the development and progress of the civilized society of human beings, and along with the development of the society, the energy is continuously excavated and utilized. From the initial use of fire by humans to the "coal age" in the 19 th century to the present "oil age", fossil energy has never been available to promote the progress of society. However, the environmental problems caused by the energy crisis and the combustion of fossil energy are also receiving more and more attention. With the proposal of the double-carbon target in China, the energy transformation and the development and the utilization of clean renewable energy are imperative. Solar energy is expected as an important energy supply for human beings in the future.
The perovskite solar cell is a novel thin-film solar cell device which converts light energy into electric energy by utilizing a photovoltaic effect. People firstly realize the 3.8% photovoltaic efficiency of the perovskite solar cell in 2009, and through rapid development, the photoelectric conversion efficiency of the perovskite solar cell reaches 25.5%, and the perovskite solar cell can be compared with a crystalline silicon cell with mature technology. In addition, the material cost is low, the band gap is adjustable, and the solar cell is compatible with rigid and flexible devices, and is considered as the most promising third-generation novel solar cell.
The perovskite solar cell mainly comprises a transparent electrode, an electron transport layer, a perovskite light absorption layer, a hole transport layer, a back electrode and the like. The traditional perovskite solar cell preparation method is that an electron transmission layer/hole transmission layer is prepared on transparent conductive glass by adopting methods such as chemical bath deposition, magnetron sputtering or solution spin coating, then a perovskite light absorption layer is prepared by a vacuum evaporation method, a solution spin coating method or slit coating, and finally a hole transmission layer/electron transmission layer and a back electrode are prepared and packaged.
The traditional perovskite solar cell needs layer-by-layer film formation and is prepared in sequence, so that the preparation period is long and the efficiency is low. And after the perovskite light absorption layer is prepared, when a hole transport layer/electron transport layer is prepared on the perovskite light absorption layer, a proper preparation method is considered to avoid damaging the perovskite layer. For example, perovskites decompose when exposed to water, and aqueous chemical bath deposition cannot be used to prepare hole transport/electron transport layers. When the hole transport layer/electron transport layer is prepared by vacuum evaporation, electron beam evaporation or magnetron sputtering and other methods, an additional buffer layer needs to be prepared to reduce the damage of temperature and particle bombardment on the perovskite absorption layer. These further increase the production cycle and cost of the battery.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a hot-pressing self-packaging perovskite solar cell, a cell module and a preparation method.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a method for preparing a hot-pressed self-packaged perovskite solar cell, the method comprising:
and respectively preparing a first battery half piece and a second battery half piece, wherein the first battery half piece comprises a perovskite layer, the second battery half piece comprises a functional layer, the perovskite layer is attached to the functional layer after the first battery half piece and the second battery half piece are combined, the packaging glue is arranged, and then the hot-pressing is carried out, so that the hot-pressing self-packaging perovskite solar battery is prepared.
According to the invention, the first battery half piece and the second battery half piece are prepared simultaneously, and the solar battery is prepared after the first battery half piece and the second battery half piece are packaged and hot-pressed, so that the solar battery has the following advantages:
(1) the two battery halves are prepared simultaneously, and the battery preparation period is shortened.
(2) The perovskite layer can be prepared after all other functional layers, namely, other functional layers do not need to be prepared on the perovskite layer, and damage to perovskite caused by other layer preparation methods can be avoided.
(3) According to the preparation method of the half cell, the material selection of the electron transport layer/hole transport layer and the selection of the preparation method can be liberated, the addition of the buffer layer can be reduced, the cost is further reduced, and the production efficiency is improved.
(4) The battery is directly packaged and formed, only the packaging adhesive film is pasted on the periphery, the packaging adhesive film is not needed in the middle, and the preparation cost can be greatly reduced.
It should be noted that the size of the perovskite solar cell is not specifically required and limited, and those skilled in the art can reasonably set the size of the cell according to the design of the cell module, for example, the size of the perovskite solar cell is 100 × 100, 156 × 156, 166 × 166, 200 × 200 or 300 × 300mm, so as to avoid the problem of the quality reduction of the film layer caused by the preparation of the perovskite layer into a larger area.
As a preferred embodiment of the present invention, the first cell half sheet includes a first conductive substrate, and a transparent electrode layer, a first charge transport layer, and a perovskite layer which are sequentially stacked on the first conductive substrate.
Preferably, the second battery half piece comprises a second conductive substrate, and a back electrode layer, a second charge transport layer and a functional layer which are stacked on the second conductive substrate.
Preferably, the perovskite layer is prepared in a manner comprising: will contain an excess of PbI2The perovskite precursor solution is arranged on the surface of the first charge transport layer, and the perovskite layer is prepared.
The invention adds excessive PbI into the perovskite precursor2During hot pressing, the functional layer reacts with excess PbI in the perovskite2The reaction takes place, and the interface department at two battery halves fuses through the chemical bond and becomes an organic whole, forms one deck three-dimensional + two-dimensional perovskite structure, increases two-dimensional structure and plays the effect of separation steam, ion migration, finally realizes the promotion of perovskite solar cell stability.
Preferably, the PbI is2The amount of the substance(s) is 0 to 10% in excess, for example, 1%, 2%, 3%, 4%, 5%, 6%%, 7%, 8%, 9% or 10%, but not 0.
The invention controls PbI2The excessive addition amount of the substance is 0-10%, so that the material has the advantages of reacting with a functional layer to form a three-dimensional and two-dimensional perovskite structure during hot pressing and improving the stability, and if the excessive addition amount is higher than 10%, PbI exists2Insufficient reaction with excess PbI2And residual, the battery performance is affected.
Preferably, the perovskite layer is made of CsFAPBX3、CsMAPbX3、CsFAMAPbX3、CsPbX3、MAPbX3Or FAPBX3One or the combination of at least two of the above, and X is one or the combination of at least two of Cl, Br and I.
Preferably, the perovskite precursor solution is provided in a form including one or a combination of at least two of spin coating, blade coating, slit coating, ink-jet printing or vacuum evaporation.
As a preferred technical scheme of the invention, the material of the functional layer comprises PEAI, PEACl, PEABr, BAI, BABr, BACl and C4H9NH3I、C4H9NH3Br、C4H9NH3One or a combination of at least two of Cl, OA (oleylamine), TMTA (trimethylolpropane triacrylate), or PbS.
Preferably, the functional layer is prepared by one or a combination of at least two of spin coating, blade coating, slit coating, ink jet printing and vacuum evaporation.
Preferably, the hot pressing temperature is 60 to 180 ℃, for example 60 ℃, 70 ℃, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃, 130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃ or 180 ℃.
Preferably, the pressure of the hot pressing is 0.5 to 20MPa, such as 0.5MPa, 2MPa, 4MPa, 6MPa, 8MPa, 10MPa, 12MPa, 14MPa, 16MPa, 18MPa or 20 MPa.
Preferably, the hot pressing time is 0.5-6 h, such as 0.5h, 1h, 2h, 3h, 4h, 5h or 6 h.
As a preferred technical solution of the present invention, the first conductive substrate includes a substrate and a metal gate line disposed on the substrate.
Preferably, the metal gate line includes a main gate line and a sub gate line.
According to the invention, the grid line is printed on the substrate in a screen printing manner, so that the problem of overhigh resistance of the transparent conducting layer when the area is overlarge can be solved.
In one embodiment, the substrate of the present invention comprises one or a combination of at least two of ultra white glass, tempered glass, stainless steel plate, titanium foil, polyethylene terephthalate, or polyethylene naphthalate; the metal grid line is made of one or a combination of at least two of gold, silver, copper, aluminum or silver-coated copper.
When the metal grid line is arranged on the substrate, the substrate is respectively cleaned by using a cleaning agent and deionized water, and after the substrate is dried by using compressed air, metal slurry is subjected to screen printing to obtain the conductive substrate.
Preferably, the number of the secondary grid lines is 0-100, such as 10, 20, 30, 40, 50, 60, 70, 80, 90 or 100.
Preferably, the width of the main grid line is 5-20 mm, such as 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm or 20 mm.
Preferably, the first conductive substrate is the same as or different from the second conductive substrate.
It should be noted that, in the present invention, the first conductive substrate and the second conductive substrate are the same or different, that is, in the first conductive substrate and the second conductive substrate, the arrangement form and the material of the substrate and the metal gate line may be the same or different.
As a preferable technical scheme of the invention, the preparation mode of the transparent electrode layer comprises a magnetron sputtering method.
Preferably, the material of the transparent electrode layer includes one or a combination of at least two of FTO (fluorine doped tin oxide), ITO (indium doped tin oxide), AZO (aluminum doped zinc oxide), BZO (boron doped zinc oxide), and ATO (aluminum doped tin oxide).
Preferably, the preparation method of the back electrode layer comprises a magnetron sputtering method, vacuum evaporation or atomic layer deposition.
Preferably, the material of the back electrode layer includes one or a combination of at least two of FTO, ITO, AZO, BZO, ATO, Au, Ag, Cu, Al, Cr, or a carbon material.
As a preferred embodiment of the present invention, the first charge transport layer is a hole transport layer, and the second charge transport layer is an electron transport layer; or, the first charge transport layer is an electron transport layer, and the second charge transport layer is a hole transport layer.
Preferably, the material of the hole transport layer includes one or a combination of at least two of nickel oxide, MoS, CuS, CuSCN, PTAA (poly [ bis (4-phenyl) (2,4, 6-trimethylphenyl) amine ]), PEDOT, or Spiro-MeOTAD (2,2',7,7' -tetrakis (N, N-p-methoxyanilino) -9,9' -spirobifluorene).
Preferably, the material of the electron transport layer comprises SnO2、TiO2、WO3、Nb2O5C60 or PCBM or a combination of at least two of them.
Preferably, the encapsulation glue is coated and arranged at the periphery of the transparent electrode layer, the first charge transport layer, the perovskite layer, the functional layer, the second charge transport layer and the back electrode layer.
Preferably, the material of the encapsulation adhesive comprises one or a combination of at least two of EVA, PVB, POE, and butyl adhesive.
Exemplarily, a preparation method of the hot-pressed self-packaged perovskite solar cell is provided, and the preparation method specifically includes the following steps:
preparing a transparent electrode layer, a first charge transport layer and a perovskite layer on a first conductive substrate in sequence to form a first battery half piece, wherein the preparation method of the perovskite layer comprises the following steps: will contain an excess of PbI2The perovskite precursor solution is arranged on the surface of the first charge transport layer to prepare the perovskite layer;
sequentially preparing a back electrode layer, a second charge transport layer and a functional layer on a second conductive substrate to form a second battery half piece;
and the first battery half piece and the second battery half piece are combined to enable the perovskite layer to be bonded with the functional layer, packaging glue is coated between the first conductive substrate and the second conductive substrate, and then hot pressing is carried out, so that the hot-pressed self-packaged perovskite solar battery is prepared.
In a second aspect, the invention provides a hot-press self-packaged perovskite solar cell, which comprises a first conductive substrate, a first charge transmission layer, a perovskite layer, a functional layer, a second charge transmission layer and a second conductive substrate which are sequentially stacked, wherein the first conductive substrate, the first charge transmission layer, the perovskite layer, the functional layer and the second charge transmission layer between the first conductive substrate and the second conductive substrate are coated by packaging adhesive, and the hot-press self-packaged perovskite solar cell is prepared by the preparation method of the hot-press self-packaged perovskite solar cell in the first aspect.
As a preferred technical solution of the present invention, the first conductive substrate and the second conductive substrate are partially overlapped along the stacking direction, and the main grid lines of the first conductive substrate and the second conductive substrate are respectively located at opposite sides of the hot-pressed self-packaged perovskite solar cell to form the hot-pressed self-packaged perovskite solar cell with a zigzag side surface.
The battery assembly is in a Z-shaped structure, so that the assembly and the splicing of the battery in the process of assembling the battery assembly are facilitated.
In a third aspect, the present invention provides a cell assembly comprising the hot-pressed self-encapsulated perovskite solar cell of the first aspect arranged in an array.
According to the invention, the hot-pressing self-packaging perovskite solar cell is directly packaged and molded, and then the battery assembly is assembled to modularize the assembly, so that problem troubleshooting and battery replacement are facilitated when the battery assembly has problems in the later period.
According to a preferable technical scheme, the Z-shaped hot-pressing self-packaging perovskite solar cell is sequentially overlapped to form the cell module, main grid lines of a first conductive substrate and a second conductive substrate of adjacent hot-pressing self-packaging perovskite solar cells are oppositely overlapped, conductive adhesive is arranged at the overlapping position of the hot-pressing self-packaging perovskite solar cells, and bus bars are arranged on the main grid lines of the hot-pressing self-packaging perovskite solar cells at the edge of the cell module.
Preferably, sealant is filled between the hot-pressed self-packaged perovskite solar cells.
Illustratively, there is provided a method of manufacturing the above battery module, the method of manufacturing the battery module including:
assembling and splicing the hot-pressed self-packaged perovskite solar cell, connecting the main grid line on the first conductive substrate with the main grid line on the second conductive substrate in adjacent cells, and refilling sealant to prepare the cell assembly. Optionally, the hot-pressed self-packaged perovskite solar cell is of a zigzag structure, and in the splicing process, the main grid lines on the first conductive substrate and the main grid lines on the second conductive substrate are spliced oppositely in the zigzag structure and connected through conductive adhesive.
The recitation of numerical ranges herein includes not only the above-recited numerical values, but also any numerical values between non-recited numerical ranges, and is not intended to be exhaustive or to limit the invention to the precise numerical values encompassed within the range for brevity and clarity.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the first battery half piece and the second battery half piece are prepared simultaneously, and the solar battery is prepared after the first battery half piece and the second battery half piece are packaged and hot-pressed, so that the solar battery has the following advantages:
(1) the two battery halves are prepared simultaneously, and the battery preparation period is shortened.
(2) The perovskite layer can be prepared after all other functional layers, namely, other functional layers do not need to be prepared on the perovskite layer, and damage to perovskite caused by other layer preparation methods can be avoided.
(3) According to the preparation method of the half cell, the material selection of the electron transport layer/hole transport layer and the selection of the preparation method can be liberated, the addition of the buffer layer can be reduced, the cost is further reduced, and the production efficiency is improved.
(4) The battery is directly packaged and formed, only the packaging adhesive film is pasted on the periphery, the packaging adhesive film is not needed in the middle, and the preparation cost can be greatly reduced.
Drawings
Fig. 1 is a schematic process flow diagram of a preparation method of a hot-pressed self-packaged perovskite solar cell provided in embodiments 1 to 3 of the present invention;
fig. 2 is a schematic cross-sectional view of a thermally pressed self-encapsulated perovskite solar cell provided in embodiments 1-3 of the present invention;
fig. 3 is a schematic front view of a battery module provided in embodiments 1 to 3 of the present invention;
fig. 4 is a schematic cross-sectional structure view of a battery module provided in embodiments 1 to 3 of the present invention.
Wherein, 1-a first cell half; 2-a second cell half; 3-a first conductive substrate; 4-a first charge transport layer; 5-a perovskite layer; 6-a second conductive substrate; 7-a second charge transport layer; 8-a functional layer; 9-a substrate; 10-a main gate line; 11-a minor grid line; 12-packaging glue; 13-sealing glue; 14-a bus bar; 15-conductive adhesive.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments.
Example 1
The embodiment provides a preparation method of a hot-pressed self-packaged perovskite solar cell, as shown in fig. 1 and fig. 2, the preparation method includes:
preparing metal grid lines made of gold on an ultra-white glass substrate 9, wherein the width of each main grid line 10 is 10mm, the number of the auxiliary grid lines 11 is 50, obtaining a first conductive substrate 3, and sequentially preparing a transparent electrode layer (not shown in the figure), a first charge transmission layer 4 and a perovskite layer 5 on the first conductive substrate 3, wherein the transparent electrode layer is made of ITO, and the first charge transmission layer 4 is made of SnO2The first cell half 1 is formed, wherein the perovskite layer 5 is prepared by the following method: will contain PbI2The perovskite precursor solution with the substance amount being 5% of the excessive addition amount is arranged on the surface of the first charge transport layer 4 to prepare and obtain the perovskite layer 5;
the second conductive substrate 6 and the first conductive substrate 3 have the same structure and composition, a back electrode layer (not shown in the figure), a second charge transport layer 7 and a functional layer 8 are sequentially prepared on the second conductive substrate 6 to form the second battery half-piece 2, the back electrode layer is made of ITO, the second charge transport layer 7 is a hole transport layer made of MoS, and the functional layer 8 is made of PEAI;
the method comprises the steps of combining a first battery half piece 1 and a second battery half piece 2 to enable a perovskite layer 5 and a functional layer 8 to be bonded, coating EVA (ethylene-vinyl acetate) packaging glue 12 between a first conductive substrate 3 and a second conductive substrate 6, and then carrying out hot pressing at the temperature of 120 ℃, under the pressure of 10MPa for 3 hours to obtain the hot-pressed self-packaged perovskite solar battery, wherein the first conductive substrate 3 and the second conductive substrate 6 are partially overlapped along the laminating direction, main grid lines 10 of the first conductive substrate 3 and the second conductive substrate 6 are respectively positioned on the opposite sides of the hot-pressed self-packaged perovskite solar battery, and the hot-pressed self-packaged perovskite solar battery with the Z-shaped side faces is formed.
Example 2
The embodiment provides a preparation method of a hot-pressed self-packaged perovskite solar cell, as shown in fig. 1 and fig. 2, the preparation method includes:
preparing metal grid lines made of silver on a titanium foil substrate 9, wherein the width of each main grid line 10 is 20mm, the number of auxiliary grid lines 11 is 100, obtaining a first conductive substrate 3, sequentially preparing a transparent electrode layer (not shown in the figure), a first charge transport layer 4 and a perovskite layer 5 on the first conductive substrate 3, wherein the transparent electrode layer is made of ATO, the first charge transport layer 4 is a hole transport layer made of CuS, and a first battery half piece 1 is formed, wherein the preparation method of the perovskite layer 5 is as follows: will contain PbI2The perovskite precursor solution with the excessive addition amount of 1% of the amount of the substance is arranged on the surface of the first charge transport layer 4 to prepare and obtain the perovskite layer 5;
preparing metal grid lines made of copper on a toughened glass substrate 9, wherein the width of each main grid line 10 is 5mm, the number of the auxiliary grid lines 11 is 10, obtaining a second conductive substrate 6, and sequentially preparing a back electrode layer (not shown in the figure), a second charge transmission layer 7 and a functional layer 8 on the second conductive substrate 6 to form the second battery half piece 2, wherein the back electrode layer is made of BZO, and the second charge transmission layer 7 is made of WO3The functional layer 8 is made of BABr;
half 1 and the half 2 pairs of second battery of first battery, make perovskite layer 5 and functional layer 8 laminating, hot pressing after coating POE encapsulation glue 12 between first electrically conductive basement 3 and the electrically conductive basement of second, the temperature of hot pressing is 60 ℃, and pressure is 20MPa, and the time is 6h, and the preparation obtains hot pressing from the dress perovskite solar cell, the electrically conductive basement of first electrically conductive basement 3 and second is 6 along range upon range of direction partial coincidence, the main grid line 10 of electrically conductive basement 3 of first electrically conductive basement and second is located respectively the hot pressing is from the opposite side of dress perovskite solar cell, and the hot pressing that forms the side and personally submits the zigzag is from the dress perovskite solar cell.
Example 3
The embodiment provides a preparation method of a hot-pressed self-packaged perovskite solar cell, as shown in fig. 1 and fig. 2, the preparation method includes:
preparing a metal grid line made of aluminum on a polyethylene naphthalate substrate 9, wherein the width of a main grid line 10 is 5mm, the number of auxiliary grid lines 11 is 30, so as to obtain a first conductive substrate 3, sequentially preparing a transparent electrode layer (not shown in the figure), a first charge transport layer 4 and a perovskite layer 5 on the first conductive substrate 3, wherein the transparent electrode layer is made of AZO, the first charge transport layer 4 is a hole transport layer made of PEDOT, so as to form a first battery half-piece 1, and the preparation method of the perovskite layer 5 is as follows: will contain PbI2The perovskite precursor solution with the substance amount being excessive and the addition amount being 10% is arranged on the surface of the first charge transport layer 4, and the perovskite layer 5 is prepared;
preparing metal grid lines made of gold on a stainless steel plate substrate 9, wherein the width of each main grid line 10 is 15mm, the number of the auxiliary grid lines 11 is 60, obtaining a second conductive substrate 6, and sequentially preparing a back electrode layer (not shown in the figure), a second charge transmission layer 7 and a functional layer 8 on the second conductive substrate 6 to form the second battery half piece 2, wherein the back electrode layer is made of Au, and the second charge transmission layer 7 is made of Nb2O5The material of the functional layer 8 is C4H9NH3I；
The method comprises the steps of combining a first battery half piece 1 and a second battery half piece 2 to enable a perovskite layer 5 and a functional layer 8 to be bonded, coating PVB packaging glue 12 between a first conductive substrate 3 and a second conductive substrate 6, and then carrying out hot pressing at the temperature of 180 ℃, under the pressure of 0.5MPa for 0.5h to obtain the hot-pressed self-packaged perovskite solar battery, wherein the first conductive substrate 3 and the second conductive substrate 6 are partially overlapped along the stacking direction, main grid lines 10 of the first conductive substrate 3 and the second conductive substrate 6 are respectively located on the opposite sides of the hot-pressed self-packaged perovskite solar battery, and the hot-pressed self-packaged perovskite solar battery with the Z-shaped lateral side is formed.
Assembling the hot-pressed self-packaged perovskite solar cell prepared in the above embodiment, illustratively, an assembling method is provided, the assembling method comprising:
assembling and splicing the hot-pressed self-packaged perovskite solar cell, in adjacent cells, respectively splicing the main grid line 10 on the first conductive substrate 3 and the main grid line 10 on the second conductive substrate 6 oppositely in a Z-shaped structure, arranging a conductive adhesive 15 between the main grid lines for connection, refilling a sealant 13, arranging the hot-pressed self-packaged perovskite solar cell at the edge, and after arranging a bus bar 14 on the main grid line, as shown in fig. 3 and 4, preparing the cell assembly.
Through the above embodiment, the solar cell is prepared by simultaneously preparing the first cell half chip 1 and the second cell half chip 2, and packaging and hot-pressing the first cell half chip 1 and the second cell half chip 2, and has the following advantages:
(1) the two battery halves are prepared simultaneously, and the battery preparation period is shortened.
(2) The perovskite layer 5 can be prepared after all other functional layers 8, i.e. there is no need to prepare other functional layers 8 on the perovskite layer 5, and damage to perovskite caused by other layer preparation methods can be avoided.
(3) According to the preparation method of the half cell, the material selection of the electron transport layer/hole transport layer and the selection of the preparation method can be liberated, the addition of the buffer layer can be reduced, the cost is further reduced, and the production efficiency is improved.
(4) The battery is directly packaged and formed, only the packaging adhesive 12 film is pasted on the periphery, the packaging adhesive 12 film is not needed in the middle, and the preparation cost can be greatly reduced.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. A preparation method of a hot-pressed self-packaged perovskite solar cell is characterized by comprising the following steps:
and respectively preparing a first battery half piece and a second battery half piece, wherein the first battery half piece comprises a perovskite layer, the second battery half piece comprises a functional layer, the perovskite layer is attached to the functional layer after the first battery half piece and the second battery half piece are combined, and the hot-pressing preparation is carried out after the packaging glue is arranged to obtain the hot-pressing self-packaging perovskite solar battery.
2. The production method according to claim 1, wherein the first cell half sheet comprises a first conductive substrate, and a transparent electrode layer, a first charge transport layer and a perovskite layer which are sequentially stacked on the first conductive substrate;
preferably, the second battery half piece comprises a second conductive substrate, and a back electrode layer, a second charge transport layer and a functional layer which are arranged on the second conductive substrate in a stacking mode;
preferably, the perovskite layer is prepared in a manner comprising: will contain an excess of PbI2The perovskite precursor solution is arranged on the surface of the first charge transport layer to prepare the perovskite layer;
preferably, the PbI is2The amount of the substance(s) is 0-10% in excess addition, but not 0;
preferably, the perovskite layer is made of CsFAPBX3、CsMAPbX3、CsFAMAPbX3、CsPbX3、MAPbX3Or FAPBX3One or the combination of at least two of the above, X is one or the combination of at least two of Cl, Br and I;
preferably, the perovskite precursor solution is provided in a form including one or a combination of at least two of spin coating, blade coating, slit coating, ink-jet printing or vacuum evaporation.
3. The method of claim 1 or 2, wherein the functional layer comprises PEAI, PEACl, PEABr, BAI, BABr, BACl, C4H9NH3I、C4H9NH3Br、C4H9NH3One or a combination of at least two of Cl, OA, TMTA or PbS;
preferably, the functional layer is prepared by one or a combination of at least two of spin coating, blade coating, slit coating, ink-jet printing and vacuum evaporation;
preferably, the hot pressing temperature is 60-180 ℃;
preferably, the pressure of the hot pressing is 0.5-20 MPa;
preferably, the hot pressing time is 0.5-6 h.
4. The manufacturing method according to claim 2 or 3, wherein the first conductive substrate comprises a substrate, and a metal grid line arranged on the substrate;
preferably, the metal gate line includes a main gate line and an auxiliary gate line;
preferably, the number of the auxiliary grid lines is 0-100;
preferably, the width of the main grid line is 5-20 mm;
preferably, the first conductive substrate is the same as or different from the second conductive substrate.
5. The method according to any one of claims 2 to 4, wherein the transparent electrode layer is prepared by a magnetron sputtering method;
preferably, the material of the transparent electrode layer comprises one or a combination of at least two of FTO, ITO, AZO, BZO and ATO;
preferably, the preparation method of the back electrode layer comprises a magnetron sputtering method, vacuum evaporation or atomic layer deposition;
preferably, the material of the back electrode layer includes one or a combination of at least two of FTO, ITO, AZO, BZO, ATO, Au, Ag, Cu, Al, Cr, or a carbon material.
6. The production method according to any one of claims 2 to 5, wherein the first charge transport layer is a hole transport layer, and the second charge transport layer is an electron transport layer; or, the first charge transport layer is an electron transport layer, and the second charge transport layer is a hole transport layer;
preferably, the material of the hole transport layer comprises one or a combination of at least two of nickel oxide, MoS, CuS, CuSCN, PTAA, PEDOT, and Spiro-MeOTAD;
preferably, the material of the electron transport layer comprises SnO2、TiO2、WO3、Nb2O5One or a combination of at least two of C60 or PCBM;
preferably, the packaging adhesive is coated and arranged at the periphery of the transparent electrode layer, the first charge transport layer, the perovskite layer, the functional layer, the second charge transport layer and the back electrode layer;
preferably, the material of the encapsulation adhesive comprises one or a combination of at least two of EVA, PVB, POE, and butyl adhesive.
7. The hot-pressing self-packaging perovskite solar cell is characterized by comprising a first conductive substrate, a first charge transmission layer, a perovskite layer, a functional layer, a second charge transmission layer and a second conductive substrate which are sequentially stacked, wherein the first conductive substrate, the first charge transmission layer, the perovskite layer, the functional layer and the second charge transmission layer between the first conductive substrate and the second conductive substrate are coated by packaging glue, and the hot-pressing self-packaging perovskite solar cell is prepared by the preparation method of the hot-pressing self-packaging perovskite solar cell according to any one of claims 1 to 6.
8. The hot-pressed self-packaged perovskite solar cell according to claim 7, wherein the first conductive substrate and the second conductive substrate are partially overlapped along the stacking direction, the main grid lines of the first conductive substrate and the second conductive substrate are respectively positioned at the opposite sides of the hot-pressed self-packaged perovskite solar cell, and the hot-pressed self-packaged perovskite solar cell with the zigzag lateral surface is formed.
9. A cell assembly comprising the thermally pressed self-encapsulated perovskite solar cell of claim 7 or 8 arranged in an array.
10. The battery assembly according to claim 9, wherein the zigzag hot-pressed self-packaged perovskite solar cells are sequentially overlapped to form the battery assembly, main grid lines of a first conductive substrate and a second conductive substrate of adjacent hot-pressed self-packaged perovskite solar cells are oppositely overlapped, conductive glue is arranged at the overlapping position of the hot-pressed self-packaged perovskite solar cells, and bus bars are arranged on the main grid lines of the hot-pressed self-packaged perovskite solar cells at the edge of the battery assembly;
preferably, sealant is filled between the hot-pressed self-packaged perovskite solar cells.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114695668A (en) * | 2022-03-22 | 2022-07-01 | 电子科技大学 | Method for improving performance of large-area flexible perovskite solar cell through surface treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114695668A (en) * | 2022-03-22 | 2022-07-01 | 电子科技大学 | Method for improving performance of large-area flexible perovskite solar cell through surface treatment |
| CN114695668B (en) * | 2022-03-22 | 2023-04-07 | 电子科技大学 | Method for improving performance of large-area flexible perovskite solar cell through surface treatment |
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