A patterned perovskite cell assembly and a preparation method and device thereof

Abstract

The application provides a kind of patterned perovskite battery component and its preparation method and device, the preparation method at least includes: S1, the surface of substrate layer is divided into first coating area and second coating area;S2, in the first coating area, nano-particle suspension is coated, and after drying, the discontinuous liquid-repellent part of island-like nano dot array structure is formed;S3, in the second coating area, perovskite solution is coated, and after drying, perovskite film layer is formed, that is, patterned perovskite film layer is obtained;Wherein, patterned perovskite film layer includes pattern area and perovskite film area, discontinuous liquid-repellent part is located in pattern area, perovskite film layer is located in perovskite film area, and the surface energy of discontinuous liquid-repellent part and perovskite film layer exists adaptive difference.The application realizes the controllable fine patterning of perovskite film layer, and the coating uniformity of internal effective area is considered.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of solar cells, and relates to a perovskite cell assembly, in particular to a patterned perovskite cell assembly and a preparation method and device thereof. BACKGROUND

[0002] At present, for large-size perovskite cell assemblies, technicians generally adopt a slot coating method to coat a perovskite liquid film. Although this method can ensure the full-size uniformity of the ultra-thin liquid film, the fine patterning of the perovskite liquid film cannot be realized at present due to the self-leveling characteristics of the liquid film and the limitation of the coating knife liquid control capability.

[0003] The inkjet printing technology adopted by the traditional method can control the size and spraying position of ink droplets, so that fine patterning can be realized to a certain extent. However, when the perovskite liquid film is sprayed, it is difficult to ensure both the fine control of the edge of the liquid film and the coating uniformity of the internal effective area. This is because the perovskite liquid film has special requirements for the viscosity of the solution, the selection of the solvent, the type of additives, the control of the substrate wettability, the thickness of the liquid film, the drying method and the like, which is significantly different from the conventional inkjet ink.

[0004] In addition, in order to ensure the crystallization quality of the perovskite film layer and its good contact with the lower interface and the photoelectric conversion efficiency, technicians generally require that the surface energy of the perovskite solution and the substrate material be compatible, that is, the solid-liquid interface contact angle between the two is small and the wettability is good. This will inevitably affect the edge position during inkjet pattern forming, as the liquid film is more prone to outward spreading, thereby causing the inkjet pattern to be unable to realize fine control. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a patterned perovskite cell assembly and a preparation method and device thereof, which realize controllable fine patterning of the perovskite film layer while ensuring the coating uniformity of the internal effective area.

[0006] To achieve the purpose of the present application, the following technical solutions are adopted:

[0007] In a first aspect, the present application provides a preparation method of a patterned perovskite cell assembly, which comprises at least the following steps:

[0008] S1, dividing a first coating area and a second coating area on the surface of a substrate layer;

[0009] S2, coating a nanoparticle suspension in the first coating area to form a discontinuous liquid-repellent part with an island-like nanoparticle array structure after drying;

[0010] S3, coating a perovskite solution in the second coating area to form a perovskite film layer after drying, thereby obtaining the patterned perovskite film layer.

[0011] The patterned perovskite film layer comprises a pattern area and a perovskite film area, the discontinuous lyophobic part is located in the pattern area, the perovskite film layer is located in the perovskite film area, and the surface energy of the discontinuous lyophobic part and the perovskite film layer has an adaptive difference.

[0012] In the present application, the adaptive difference in surface energy specifically refers to that the contact angle of the perovskite solution on the discontinuous lyophobic part and the perovskite film layer is different, and the area of the perovskite solution on the discontinuous lyophobic part is in a non-wetting state, while the area of the perovskite solution on the perovskite film layer is in a wetting state.

[0013] The preparation method provided by the present application coats a nanoparticle suspension in a specific area of the substrate layer, artificially creates a local non-wetting area, that is, a discontinuous lyophobic part of an island-like nanomatrix structure, so that the surface energy of the discontinuous lyophobic part and the perovskite film layer has an adaptive difference, thereby effectively inhibiting the spreading of the perovskite solution to the pattern area, and finally forming a patterned perovskite film layer, achieving controllable fine patterning of the perovskite film layer, while well balancing the uniformity of coating in the internal effective area, and ensuring the photoelectric conversion efficiency of the perovskite battery and the production yield of large-area batteries.

[0014] As a preferred technical solution of the first aspect of the present application, the surface energy of the discontinuous lyophobic part and the perovskite film layer satisfies the following conditions:

[0015] The abutting areas of the discontinuous lyophobic part and the perovskite film layer can repel each other to form the distinguished pattern area and the perovskite film area.

[0016] And / or, the contact angle of the perovskite solution in the pattern area is set as θ1, and the contact angle of the perovskite solution in the second coating area is set as θ2, which satisfies: θ1> θ2, that is, the present application increases the contact angle between the perovskite solution and the discontinuous lyophobic part, so that the wettability of the perovskite solution in the pattern area is poor, thereby effectively inhibiting the spreading of the perovskite solution to the pattern area, and finally forming a patterned perovskite film layer.

[0017] The contact angle θ1 satisfies: 70°≤ θ1≤ 90°, for example, θ1 can be 70°, 71°, 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89° or 90°, but is not limited to the listed values, and other values not listed in the range are also applicable.

[0018] And / or, the contact angle θ2 satisfies: θ2≤20°, for example, it can be θ2=1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19° or 20°, but not limited to the listed values, other values in the range of values are also applicable.

[0019] In the present application, the larger the contact angle, the worse the wettability of the perovskite solution at the corresponding interface. By reasonably limiting the contact angle range of the perovskite solution in the pattern area and the second coating area respectively, the present application effectively defines the spreading area and dead area of the perovskite liquid film, further ensuring the controllable fine patterning of the perovskite film layer.

[0020] In addition, the present application particularly limits the contact angle θ2 of the perovskite solution in the second coating area to be ≤10°. Under this standard, the wettability between the perovskite solution and the substrate layer is good, fully ensuring the coverage and thickness uniformity of the perovskite liquid film on the substrate layer surface, while effectively improving the carrier transmission between the interfaces and significantly reducing defect recombination.

[0021] As a preferred technical solution of the first aspect of the present application, the nano-particle material in the nano-particle suspension of step S2 includes any one or a combination of at least two of metal oxides, small molecule organic matter or high molecular polymer. Typical but non-limiting combinations include combinations of metal oxides and small molecule organic matter, combinations of small molecule organic matter and high molecular polymer, combinations of metal oxides and high molecular polymer, or combinations of metal oxides, small molecule organic matter and high molecular polymer.

[0022] Among them, the metal oxide includes SnO2 and / or TiO2; the small molecule organic matter includes stearic acid and / or oleic acid; and the high molecular polymer includes polyethyleneimine and / or polyimide.

[0023] And / or, the size of the nano-particles in the nano-particle suspension of step S2 is ≤200nm, for example, it can be 20nm, 40nm, 60nm, 80nm, 100nm, 120nm, 140nm, 160nm, 180nm or 200nm, but not limited to the listed values, other values in the range of values are also applicable.

[0024] And / or, the solvent in the nano-particle suspension of step S2 is a volatile solvent.

[0025] And / or, the solvent in the nano-particle suspension of step S2 includes ethanol and / or isopropyl alcohol.

[0026] In the present application, the solvent used in the nanoparticle suspension can be a single solvent or a plurality of solvents, as long as it can ensure easy evaporation function, that is, the rapid formation of the non-continuous lyophobic part, and the composition of the solvent is not particularly limited herein.

[0027] Preferably, the concentration of the nanoparticle suspension in step S2 is ≤5 mg / mL, for example, it can be 0.5 mg / mL, 1 mg / mL, 1.5 mg / mL, 2 mg / mL, 2.5 mg / mL, 3 mg / mL, 3.5 mg / mL, 4 mg / mL, 4.5 mg / mL or 5 mg / mL, but is not limited to the listed values, and other values not listed in this range are also applicable.

[0028] Preferably, the average thickness of the non-continuous lyophobic part in step S2 is ≤200 nm, for example, it can be 20 nm, 40 nm, 60 nm, 80 nm, 100 nm, 120 nm, 140 nm, 160 nm, 180 nm or 200 nm, but is not limited to the listed values, and other values not listed in this range are also applicable.

[0029] Preferably, the coating method in step S2 includes any one of piezoelectric inkjet coating, slot coating, electrostatic spraying, ultrasonic spraying, electrohydrodynamic spraying, screen printing or vapor deposition.

[0030] Preferably, the drying method in step S2 includes air knife drying.

[0031] In a second aspect, the present application provides a patterned perovskite battery component, which comprises at least a substrate layer and a patterned perovskite film layer arranged in a stack, wherein the patterned perovskite film layer comprises a pattern region and a perovskite film region, the pattern region is provided with an island-like nanopoint array structure of non-continuous lyophobic part, the perovskite film region is provided with a perovskite film layer, and the surface energy of the non-continuous lyophobic part and the perovskite film layer has a poor adaptability.

[0032] Preferably, the surface energy of the non-continuous lyophobic part and the perovskite film layer satisfies the following condition:

[0033] The abutting area of the non-continuous lyophobic part and the perovskite film layer can repel each other to form the distinguished pattern region and the perovskite film region.

[0034] Preferably, the perovskite solution required for forming the perovskite film layer satisfies the following condition:

[0035] The contact angle of the perovskite solution on the pattern region is θ1, and the contact angle of the perovskite solution on the perovskite film region is θ2, and θ1> θ2 is satisfied, that is, the contact angle between the perovskite solution and the discontinuous liquid-repellent part is increased, the wettability of the perovskite solution on the pattern region is deteriorated, the spreading of the perovskite solution to the pattern region is effectively inhibited, and finally the patterned perovskite film layer is formed.

[0036] As a preferred technical solution of the second aspect of the present application, the nano-particle material in the discontinuous liquid-repellent part includes any one or a combination of at least two of metal oxides, small-molecule organic matter or high-molecular polymer, and typical but non-limiting combinations include a combination of metal oxides and small-molecule organic matter, a combination of small-molecule organic matter and high-molecular polymer, a combination of metal oxides and high-molecular polymer, or a combination of metal oxides, small-molecule organic matter and high-molecular polymer.

[0037] The metal oxides include SnO2 and / or TiO2; the small-molecule organic matter includes stearic acid and / or oleic acid; and the high-molecular polymer includes chitosan and / or polystyrene.

[0038] As a preferred technical solution of the second aspect of the present application, the nano-particle size in the discontinuous liquid-repellent part is ≤200 nm, for example, it can be 20 nm, 40 nm, 60 nm, 80 nm, 100 nm, 120 nm, 140 nm, 160 nm, 180 nm or 200 nm, but is not limited to the listed values, and other values not listed in this range are also applicable.

[0039] And / or, the average thickness of the discontinuous liquid-repellent part is ≤200 nm, for example, it can be 20 nm, 40 nm, 60 nm, 80 nm, 100 nm, 120 nm, 140 nm, 160 nm, 180 nm or 200 nm, but is not limited to the listed values, and other values not listed in this range are also applicable.

[0040] In a third aspect, the present application provides a device for preparing a patterned perovskite battery component, which at least includes a carrier, a first coating component and a second coating component; the carrier is used to fix a substrate layer, the surface of the substrate layer is divided into a first coating area and a second coating area; the first coating component is used to coat a nano-particle suspension in the first coating area to form a discontinuous liquid-repellent part in the form of an island-like nano-dot array structure; and the second coating component is used to coat a perovskite solution in the second coating area to form a perovskite film layer.

[0041] As a preferred technical scheme of the third aspect of the present application, the first coating assembly comprises a first liquid storage box and a first nozzle in communication with each other, the first liquid storage box is used for storing the nanoparticle suspension, and the first nozzle is used for coating the nanoparticle suspension along a preset track.

[0042] And / or, the second coating assembly comprises a second liquid storage box and a second nozzle in communication with each other, the second liquid storage box is used for storing the perovskite solution, and the second nozzle is used for coating the perovskite solution along a preset track.

[0043] And / or, a wind knife is arranged between the first coating assembly and the second coating assembly, and is used for drying the nanoparticle suspension.

[0044] Compared with the prior art, the present application has the following beneficial effects:

[0045] The preparation method provided by the present application coats the nanoparticle suspension in a specific area of the substrate layer, artificially creates a local non-wetting area, i.e. an island-shaped nanopoint array structure non-continuous lyophobic part, so that there is a poor adaptability between the non-continuous lyophobic part and the surface energy of the perovskite film layer, thereby effectively inhibiting the extension of the perovskite solution to the pattern area, finally forming a patterned perovskite film layer, realizing the controllable fine patterning of the perovskite film layer, and at the same time, the coating uniformity of the internal effective area is well considered, and the photoelectric conversion efficiency of the perovskite solar cell and the production yield of the large-area solar cell are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 is a preparation method flow chart of the patterned perovskite solar cell assembly provided by the present application;

[0047] Figure 2 is a patterned perovskite solar cell assembly and a local enlarged view thereof provided by the present application;

[0048] Figure 3 is a contact angle diagram of the perovskite solution in the pattern area in the present application;

[0049] Figure 4 is a contact angle diagram of the perovskite solution in the second coating area in the present application;

[0050] Figure 5 is a local schematic diagram of the device for preparing the patterned perovskite solar cell assembly provided by the present application;

[0051] Figure 6 is a patterned perovskite solar cell assembly structure diagram provided by Comparative Example 1.

[0052] Among them: 10-base layer; 20-patterned perovskite film layer; 30-perovskite solution; 41-first nozzle; 42-second nozzle; 43-air knife; 21-pattern area; 22-perovskite film area; 210-discontinuous liquid-repellent portion; 220-perovskite film layer. DETAILED DESCRIPTION

[0053] The technical solution of the present invention is further described below by way of specific embodiments. It should be understood by those skilled in the art that the embodiments are merely to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0054] Example 1

[0055] This embodiment provides a patterned perovskite battery component and a preparation method thereof, such as Figure 2 As shown, the patterned perovskite battery assembly includes a stacked base layer 10 and a patterned perovskite film layer 20, the patterned perovskite film layer 20 includes a pattern area 21 and a perovskite film area 22, the pattern area 21 is provided with a non-continuous liquid-repellent portion 210 with an island-like nano-dot array structure, the perovskite film area 22 is provided with a perovskite film layer 220, and there is an adaptability difference between the surface energies of the non-continuous liquid-repellent portion 210 and the perovskite film layer 220.

[0056] Specifically, the nanoparticles in the discontinuous lyophobic portion 210 are made of SnO 2 and have an average size of 200 nm; and the average thickness of the discontinuous lyophobic portion 210 is 200 nm.

[0057] like Figure 1 As shown, the method for preparing the patterned perovskite battery assembly includes the following steps:

[0058] S1, dividing the surface of the base layer 10 into a first coating area and a second coating area;

[0059] S2, coating the first coating area with a nanoparticle suspension to form a discontinuous lyophobic portion 210 having an island-like nano-lattice structure after drying;

[0060] S3 , coating the second coating area with a perovskite solution 30 , and forming a perovskite film layer 220 after drying, that is, obtaining a patterned perovskite film layer 20 .

[0061] Among them, the nanoparticle material in the nanoparticle suspension in step S2 is SnO2, the solvent is ethanol, and the concentration is 0.8 mg / mL; the coating methods in steps S2 and S3 are both piezoelectric inkjet coating; the drying in step S2 is air knife drying; and the drying in step S3 is natural air drying.

[0062] As mentioned above, the patterned perovskite film layer 20 comprises a pattern region 21 and a perovskite film region 22, the non-continuous lyophobic part 210 is located in the pattern region 21, and the perovskite film layer 220 is located in the perovskite film region 22. The contact angle of the perovskite solution 30 in the pattern region 21 is θ1=82° (see Figure 3 ), and the contact angle in the second coating region is θ2=8° (see Figure 4 ).

[0063] In this embodiment, the material and thickness of the substrate layer 10 have no obvious influence on the formation of the non-continuous lyophobic part 210, and as long as the wettability of the perovskite solution 30 and the related interface meets the above conditions, the specific composition of the perovskite solution 30 is not particularly mentioned.

[0064] Example 2

[0065] This embodiment provides a patterned perovskite battery assembly and a preparation method thereof. As shown in Figure 2 , the patterned perovskite battery assembly comprises a substrate layer 10 and a patterned perovskite film layer 20 arranged in layers, the patterned perovskite film layer 20 comprises a pattern region 21 and a perovskite film region 22, the pattern region 21 is provided with a non-continuous lyophobic part 210 in the form of an island-shaped nano dot array structure, the perovskite film region 22 is provided with a perovskite film layer 220, and the surface energy of the non-continuous lyophobic part 210 and the perovskite film layer 220 has a poor adaptability.

[0066] Specifically, the nano-particle material in the non-continuous lyophobic part 210 is TiO2, and the average size is 120 nm; the average thickness of the non-continuous lyophobic part 210 is 120 nm.

[0067] As shown in Figure 1 , the preparation method of the patterned perovskite battery assembly comprises the following steps:

[0068] S1, dividing a first coating region and a second coating region on the surface of the substrate layer 10;

[0069] S2, coating a nano-particle suspension in the first coating region, and forming a non-continuous lyophobic part 210 in the form of an island-shaped nano dot array structure after drying;

[0070] S3, coating a perovskite solution 30 in the second coating region, and forming a perovskite film layer 220 after drying, i.e. obtaining a patterned perovskite film layer 20.

[0071] The nanoparticles in the nanoparticle suspension in step S2 are made of TiO2, the solvent is isopropyl alcohol, and the concentration is 0.6 mg / mL; the coating methods in steps S2 and S3 are both piezoelectric inkjet coating; the drying in step S2 is air knife drying; and the drying in step S3 is natural air drying.

[0072] As mentioned above, the patterned perovskite film layer 20 includes a pattern region 21 and a perovskite film region 22, the discontinuous lyophobic part 210 is located in the pattern region 21, and the perovskite film layer 220 is located in the perovskite film region 22. According to the contact angle detector test, the contact angle θ1 of the perovskite solution 30 on the pattern region 21 is 75° (see Figure 3 ), and the contact angle θ2 of the perovskite solution 30 on the second coating region is 8° (see Figure 4 ).

[0073] In this embodiment, the material and thickness of the substrate layer 10 have no obvious influence on the formation of the discontinuous lyophobic part 210, and as long as the wettability of the perovskite solution 30 and the related interface meets the above conditions, the specific composition of the perovskite solution 30 is not particularly mentioned.

[0074] Example 3

[0075] This embodiment provides a device for preparing a patterned perovskite battery assembly, which includes a carrier, a first coating assembly, and a second coating assembly. The carrier is used to fix the substrate layer 10, and the surface of the substrate layer 10 is divided into a first coating region and a second coating region. The first coating assembly is used to coat the nanoparticle suspension on the first coating region to form the discontinuous lyophobic part 210 in the form of an island-shaped nanometer dot array structure. The second coating assembly is used to coat the perovskite solution 30 on the second coating region to form the perovskite film layer 220.

[0076] As shown in Figure 5 , the first coating assembly includes a first liquid storage box (not shown in the figure) and a first nozzle 41, the first liquid storage box is used to store the nanoparticle suspension, and the first nozzle 41 is used to coat the nanoparticle suspension along a preset track. The second coating assembly includes a second liquid storage box (not shown in the figure) and a second nozzle 42, the second liquid storage box is used to store the perovskite solution 30, and the second nozzle 42 is used to coat the perovskite solution 30 along a preset track. An air knife 43 is arranged between the first coating assembly and the second coating assembly, and is used to dry the nanoparticle suspension.

[0077] Comparative Example 1

[0078] This comparative example provides a patterned perovskite battery component and a preparation method thereof, which differs from Example 1 only in that the nanoparticle suspension is not pre-coated before the perovskite solution 30 is applied, and the remaining steps and conditions are the same as those in Example 1.

[0079] Depend on Figure 6 It can be seen that the pattern fineness of the perovskite film layer 220 in the battery assembly obtained in this comparative example is far less than that of Example 1, and the perovskite solution 30 has obvious overflow areas at the edge of the pattern area 21.

[0080] It can be seen that the preparation method provided by the present invention coats the nanoparticle suspension on a specific area of ​​the base layer, artificially creates a local non-wetting area, that is, a discontinuous lyophobic part of the island-like nano-lattice structure, so that there is an adaptability difference between the surface energy of the discontinuous lyophobic part and the perovskite film layer, thereby effectively inhibiting the perovskite solution from extending to the pattern area, and finally forming a patterned perovskite film layer, realizing controllable fine patterning of the perovskite film layer, and at the same time taking into account the coating uniformity of the internal effective area, thereby ensuring the photoelectric conversion efficiency of the perovskite battery and the production yield of large-area batteries.

[0081] The above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. A method of making a patterned perovskite cell assembly, characterized in that, The preparation method comprises at least the following steps: S1, dividing a first coating area and a second coating area on the surface of the substrate layer; S2, coating a nanoparticle suspension in the first coating area, and forming a discontinuous lyophobic part of island-like nanoparticle array structure after drying; S3, coating a perovskite solution in the second coating area, and forming a perovskite film layer after drying, thereby obtaining a patterned perovskite film layer; The patterned perovskite film layer comprises a pattern area and a perovskite film area, the discontinuous lyophobic part is located in the pattern area, the perovskite film layer is located in the perovskite film area, and there is a difference in surface energy between the discontinuous lyophobic part and the perovskite film layer; The surface energy of the discontinuous lyophobic part and the perovskite film layer satisfies the following condition: The adjacent areas of the discontinuous lyophobic part and the perovskite film layer can repel each other to form the distinguished pattern area and the perovskite film area, and the perovskite solution is in a non-wetting state in the area of the discontinuous lyophobic part and in a wetting state in the area of the perovskite film layer.

2. The method of claim 1, wherein the method further comprises: The contact angle of the perovskite solution in the pattern area is θ1, and the contact angle of the perovskite solution in the second coating area is θ2, and θ1> θ2.

3. The method of claim 2, wherein the method further comprises: The contact angle θ1 satisfies 70°≤ θ1≤ 90°.

4. The method of claim 2, wherein the method further comprises: The contact angle θ2 satisfies θ2≤ 20°.

5. The method of claim 1 or 2, wherein the method further comprises: The nanoparticle material in the nanoparticle suspension in step S2 comprises any one or a combination of at least two of metal oxides, small molecule organic substances or high molecular polymers.

6. The method of claim 5, wherein the method further comprises: The metal oxides comprise SnO2 and / or TiO2.

7. The method of claim 1 or 2, wherein the method further comprises: The nanoparticle size in the nanoparticle suspension in step S2 is ≤200 nm.

8. The method of claim 1 or 2, wherein the method further comprises: The solvent in the nanoparticle suspension in step S2 is a volatile solvent.

9. The method of claim 8, wherein the method further comprises: The solvent in the nanoparticle suspension in step S2 comprises ethanol and / or isopropanol.

10. The method of claim 1 or 2, wherein the method further comprises: The concentration of the nanoparticle suspension in step S2 is ≤5 mg / mL.

11. The method of claim 1 or 2, wherein the method further comprises: The average thickness of the discontinuous lyophobic part in step S2 is ≤200 nm.

12. The method of claim 1 or 2, wherein the method further comprises: The coating method in step S2 comprises any one of piezoelectric inkjet coating, slot coating, electrostatic spraying, ultrasonic spraying, electrofluidic spraying, screen printing or vapor deposition.

13. The method of claim 1 or 2, wherein the method further comprises: The drying method in step S2 comprises air knife drying.

14. A patterned perovskite cell assembly, characterized in that, The patterned perovskite battery assembly comprises at least a substrate layer and a patterned perovskite film layer arranged in layers, the patterned perovskite film layer comprises a pattern area and a perovskite film area, the pattern area is provided with a discontinuous lyophobic part of island-like nanoparticle array structure, the perovskite film area is provided with a perovskite film layer, and there is a difference in surface energy between the discontinuous lyophobic part and the perovskite film layer; The surface energy of the discontinuous lyophobic part and the perovskite film layer satisfies the following condition: The adjacent areas of the discontinuous lyophobic part and the perovskite film layer can repel each other to form the distinguished pattern area and the perovskite film area, and the perovskite solution is in a non-wetting state in the area of the discontinuous lyophobic part and in a wetting state in the area of the perovskite film layer.

15. The patterned perovskite cell assembly of claim 14, wherein, The nanoparticle material in the discontinuous lyophobic part comprises any one or a combination of at least two of metal oxides, small molecule organic substances or high molecular polymers.

16. The patterned perovskite cell assembly of claim 15, wherein, The metal oxide includes SnO2 and / or TiO2.

17. The patterned perovskite cell assembly of claim 14, wherein, The nanoparticle size in the discontinuous lyophobic section is ≤200 nm.

18. The patterned perovskite cell assembly of claim 14, wherein, The average thickness of the discontinuous lyophobic section is ≤200 nm.

19. An apparatus for preparing a patterned perovskite cell assembly, for carrying out the method for preparing a patterned perovskite cell assembly according to any one of claims 1 to 13, or for preparing a patterned perovskite cell assembly according to any one of claims 14 to 18, characterized in that The device at least includes a carrier, a first coating assembly and a second coating assembly; The carrier is used to fix a substrate layer, and a surface of the substrate layer is divided into a first coating area and a second coating area; The first coating assembly is used to coat a nanoparticle suspension in the first coating area to form a discontinuous lyophobic section of an island-like nanoparticle array structure; The second coating assembly is used to coat a perovskite solution in the second coating area to form a perovskite film layer.

20. The apparatus of claim 19, wherein, The first coating assembly includes a first liquid storage box and a first nozzle in communication with each other, the first liquid storage box is used to store the nanoparticle suspension, and the first nozzle is used to coat the nanoparticle suspension along a preset track.

21. The apparatus of claim 19, wherein, The second coating assembly includes a second liquid storage box and a second nozzle in communication with each other, the second liquid storage box is used to store the perovskite solution, and the second nozzle is used to coat the perovskite solution along a preset track.

22. The apparatus of claim 19, wherein, An air knife is arranged between the first coating assembly and the second coating assembly, and is used to dry the nanoparticle suspension.

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