A packaged perovskite cell assembly and an in-situ packaging method thereof
Patent Information
- Application Number
- CN202510532804.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-11-03
AI Technical Summary
Existing encapsulation processes are insufficient to effectively block moisture and oxygen, resulting in inadequate stability of perovskite solar cell modules in outdoor environments. In particular, aging at the edges of the encapsulant film accelerates moisture intrusion, affecting the long-term performance of the modules.
Multiple barrier layers, including a first barrier layer, a second barrier layer, and a third barrier layer, are disposed on the surface of the back electrode layer of the perovskite solar cell module and composited with a sealing film to construct a high-barrier encapsulation structure. Polysilazane, 3-mercaptopropyltrimethoxysilane and siloxane prepolymer or benzophenone and siloxane prepolymer are used as barrier layer materials, supplemented by sealing strips and encapsulation backsheets, and in-situ encapsulation is completed through lamination.
It achieves excellent water and oxygen barrier capabilities, significantly improves the stability of perovskite solar cell modules, and reduces the efficiency degradation rate under humid and hot aging conditions.
Smart Images
Figure CN123035818A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of perovskite solar cell technology, and specifically relates to an encapsulated perovskite solar cell module and its in-situ encapsulation method. Background Technology
[0002] In the fabrication of perovskite solar modules, encapsulation technology plays a crucial role, directly impacting the module's durability and stability in the natural environment. Although existing encapsulation processes have significantly improved the module's resistance to external shocks, the penetration of moisture and oxygen remains a key factor affecting the long-term performance of perovskite solar modules. Traditionally, encapsulating films and backsheets, as core materials in the encapsulation structure, while possessing certain water and oxygen barrier functions, are insufficient to meet the ever-increasing stability requirements. Especially for photovoltaic modules exposed to outdoor environments for extended periods, the aging of the encapsulating film edges accelerates moisture intrusion. Furthermore, while emerging polymer water and oxygen barrier layers have shown potential, their low surface free energy leading to insufficient adhesion, and the limitations of single-layer structures in achieving efficient barrier properties, remain major obstacles to their application. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a packaged perovskite battery module and its in-situ packaging method. Multiple barrier layers are set on the surface of the back electrode layer of the perovskite battery module. Through the synergistic effect between the various barrier layers and the composite with the sealant film, a high barrier packaging structure with excellent water and oxygen barrier capabilities and long-term stability is constructed, thereby improving the stability of the packaged perovskite battery module.
[0004] This invention is implemented as follows: A packaged perovskite solar cell module is provided, the internal structure of which, from top to bottom, includes a perovskite solar cell module, a first barrier layer, a second barrier layer, a third barrier layer, a sealing film, and a backplate. A sealing strip is also provided between the perovskite solar cell module and the backplate, and the sealing strip is located around the periphery of the first barrier layer, the second barrier layer, the third barrier layer, and the sealing film. The first barrier layer is bonded to the back electrode layer located on the bottom surface of the perovskite solar cell module. The first barrier layer is made of polysilazane (PSZ), the second barrier layer is made of a mixture of 3-mercaptopropyltrimethoxysilane (MPTMS) and a siloxane prepolymer, or a mixture of benzophenone (DMPA) and a siloxane prepolymer, and the third barrier layer is made of polyimide (PI).
[0005] Furthermore, the thickness of the first barrier layer is 1~5μm.
[0006] This invention is implemented as follows, and also provides an in-situ encapsulation method for the encapsulated perovskite solar cell module as described above, the in-situ encapsulation method comprising the following steps: Step 1: Deposit a first barrier layer on the surface of the cleaned perovskite solar cell module using a spraying or spin coating method, then deposit a second barrier layer on the surface of the first barrier layer, and then deposit a third barrier layer on the surface of the second barrier layer. Step 2: Apply a sealing film to the third barrier layer, and apply sealing strips around the first barrier layer, second barrier layer, third barrier layer and sealing film. Then apply an encapsulation backplate on the sealing film and sealing strips. Finally, put them into a laminator for lamination to complete the in-situ encapsulation of the perovskite solar cell module.
[0007] Furthermore, in step one, after the material of the second barrier layer is deposited, it needs to be cured with a 365nm or 385nm UV lamp for 20~30s.
[0008] Furthermore, in step two, the lamination conditions include a lamination temperature of 135~145℃, a pressure of 85~95kPa, and a time of 8~12min.
[0009] Furthermore, in step two, the sealing film is a POE film, and the encapsulation backplate is glass.
[0010] Compared with the prior art, the encapsulated perovskite battery module and its in-situ encapsulation method of the present invention, the internal structure of the encapsulated perovskite battery module from top to bottom includes a perovskite battery module, a first barrier layer, a second barrier layer, a third barrier layer, a sealing film, and an encapsulation backplate. A sealing strip is also provided between the perovskite battery module and the encapsulation backplate, and the sealing strip is located around the periphery of the first barrier layer, the second barrier layer, the third barrier layer, and the sealing film. The bottom surface of the perovskite battery module is a back electrode layer, and the first barrier layer is attached to the back electrode layer. The first barrier layer is made of polysilazane, the second barrier layer is made of a mixture of 3-mercaptopropyltrimethoxysilane and siloxane prepolymer, or a mixture of benzophenone and siloxane prepolymer, and the third barrier layer is made of polyimide. The present invention sequentially sets a first barrier layer, a second barrier layer and a third barrier layer on the surface of the back electrode layer of the perovskite solar cell module. Through the synergistic effect between the first barrier layer, the second barrier layer and the third barrier layer, and in combination with the sealant film and the sealant strip, a high barrier encapsulation structure with excellent water and oxygen barrier capabilities and long-term stability is constructed, thereby improving the stability of the encapsulated perovskite solar cell module. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the internal structure of a preferred embodiment of the encapsulated perovskite solar cell module of the present invention. Figure 2 This is a schematic diagram of the internal structure of a comparative perovskite solar cell module. Figure 3The efficiency degradation curves of the perovskite solar cell modules after wet heat aging test in Examples 1, 2 and the comparative examples of the present invention are shown. Detailed Implementation
[0012] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0013] Please refer to Figure 1 As shown, in a preferred embodiment of the encapsulated perovskite solar cell module of the present invention, its internal structure, from top to bottom, includes a perovskite solar cell module 1, a first barrier layer 2, a second barrier layer 3, a third barrier layer 4, a sealing film 5, and an encapsulation backplate 6. A sealing strip 7 is also provided between the perovskite solar cell module 1 and the encapsulation backplate 6, and the sealing strip 7 is located around the periphery of the first barrier layer 2, the second barrier layer 3, the third barrier layer 4, and the sealing film 5. The first barrier layer 2 is bonded to the back electrode layer (not shown in the figure) located on the bottom surface of the perovskite solar cell module 1.
[0014] The first barrier layer 2 is made of polysilazane (PSZ), the second barrier layer 3 is made of a mixture of 3-mercaptopropyltrimethoxysilane (MPTMS) and siloxane prepolymer, or a mixture of benzophenone (DMPA) and siloxane prepolymer. The third barrier layer 4 is made of polyimide (PI).
[0015] Specifically, the thickness of the first barrier layer 2 is 1~5μm.
[0016] This invention also discloses an in-situ encapsulation method for the encapsulated perovskite solar cell module as described above, the in-situ encapsulation method comprising the following steps: Step 1: Deposit polysilazane (PSZ) material as a first barrier layer 2 on the surface of the cleaned perovskite solar cell module 1 using a spraying or spin coating method. Then, deposit a second barrier layer 3 on the surface of the first barrier layer 2. Finally, deposit polyimide (PI) material as a third barrier layer 4 on the surface of the second barrier layer 3.
[0017] Step 2: Apply a sealing film 5 to the third barrier layer 4, and apply sealing strips 7 around the first barrier layer 2, the second barrier layer 3, the third barrier layer 4 and the sealing film 5. Then apply an encapsulation backplate 6 on the sealing film 5 and the sealing strips 7. Finally, place them together in a laminator for lamination to complete the in-situ encapsulation of the perovskite solar cell module.
[0018] In step one, after the material of the second barrier layer 3 is deposited, it needs to be cured with a 365nm or 385nm UV lamp for 20~30s.
[0019] In step two, the lamination process conditions include a lamination temperature of 135~145℃, a pressure of 85~95kPa, and a time of 8~12min.
[0020] In step two, the sealing film 5 is a POE film, and the encapsulation backplate 6 is glass.
[0021] The in-situ encapsulation method of the perovskite solar cell module after encapsulation according to the present invention is further illustrated below through specific embodiments.
[0022] Example 1
[0023] The first embodiment of the in-situ encapsulation method for the encapsulated perovskite solar cell module of the present invention includes the following steps: Step 11: The back electrode layer of the perovskite solar cell module 1 is subjected to UV and ozone treatments for 30 seconds each. A first barrier layer 2 with a thickness of 1 μm is deposited on the cleaned back electrode layer surface using a spin-coating method. Then, a mixture of 3-mercaptopropyltrimethoxysilane and siloxane prepolymer is deposited on the surface of the first barrier layer 2 and cured with a 365 nm UV lamp for 30 seconds to obtain the second barrier layer 3. Finally, a third barrier layer 4 is deposited on the surface of the second barrier layer 3.
[0024] Step 12: Apply a sealing film 5 to the third barrier layer 4. Apply butyl rubber as a sealing strip 7 around the four sides of the first barrier layer 2, the second barrier layer 3, the third barrier layer 4 and the sealing film 5. Apply glass as an encapsulation backplate 6 on the sealing film 5 and the sealing strip 7. Then put them into a laminator for lamination. The lamination temperature is 140℃, the pressure is 90kPa and the time is 10min. Finally, the in-situ encapsulation of the perovskite solar cell module is completed.
[0025] Example 2
[0026] A second embodiment of the in-situ encapsulation method for the encapsulated perovskite solar cell module of the present invention includes the following steps: Step 21: The back electrode layer of the perovskite solar cell module 1 is subjected to UV and ozone treatments for 30 seconds each. A first barrier layer 2 with a thickness of 5 μm is deposited on the cleaned back electrode layer surface using a spin-coating method. Then, a mixture of benzophenone and siloxane prepolymer is deposited on the surface of the first barrier layer 2 and cured with a 385 nm UV lamp for 20 seconds to obtain the second barrier layer 3. Finally, a third barrier layer 4 is deposited on the surface of the second barrier layer 3.
[0027] Step 22: Apply a sealing film 5 to the third barrier layer 4. Apply butyl rubber as a sealing strip 7 around the four sides of the first barrier layer 2, the second barrier layer 3, the third barrier layer 4 and the sealing film 5. Apply glass as an encapsulation backplate 6 on the sealing film 5 and the sealing strip 7. Then put them into a laminator for lamination. The lamination temperature is 140℃, the pressure is 90kPa and the time is 10min. Finally, the in-situ encapsulation of the perovskite solar cell module is completed.
[0028] Example 3
[0029] A third embodiment of the in-situ encapsulation method for the encapsulated perovskite solar cell module of the present invention includes the following steps: Step 31: The back electrode layer of the perovskite solar cell module 1 is subjected to UV and ozone treatments for 30 seconds each. A first barrier layer 2 with a thickness of 4 μm is deposited on the cleaned back electrode layer surface using a spray coating method. Then, a mixture of 3-mercaptopropyltrimethoxysilane and siloxane prepolymer is deposited on the surface of the first barrier layer 2 and cured with a 365 nm UV lamp for 28 seconds to obtain the second barrier layer 3. Finally, a third barrier layer 4 is deposited on the surface of the second barrier layer 3.
[0030] Step 32: Apply a sealing film 5 to the third barrier layer 4. Apply butyl rubber as a sealing strip 7 around the four sides of the first barrier layer 2, the second barrier layer 3, the third barrier layer 4 and the sealing film 5. Apply glass as an encapsulation backplate 6 on the sealing film 5 and the sealing strip 7. Then put them into a laminator for lamination. The lamination temperature is 145℃, the pressure is 85kPa and the time is 8min. Finally, the in-situ encapsulation of the perovskite solar cell module is completed.
[0031] Example 4
[0032] A fourth embodiment of the in-situ encapsulation method for the encapsulated perovskite solar cell module of the present invention includes the following steps: Step 41: The back electrode layer of the perovskite solar cell module 1 is subjected to UV and ozone treatments for 30 seconds each. A first barrier layer 2 with a thickness of 5 μm is deposited on the cleaned back electrode layer surface using a spray coating method. Then, a mixture of benzophenone and siloxane prepolymer is deposited on the surface of the first barrier layer 2 and cured with a 385 nm UV lamp for 25 seconds to obtain the second barrier layer 3. Finally, a third barrier layer 4 is deposited on the surface of the second barrier layer 3.
[0033] Step 42: Apply a sealing film 5 to the third barrier layer 4. Apply butyl rubber as a sealing strip 7 around the four sides of the first barrier layer 2, the second barrier layer 3, the third barrier layer 4 and the sealing film 5. Apply glass as an encapsulation backplate 6 on the sealing film 5 and the sealing strip 7. Then put them into a laminator for lamination. The lamination temperature is 135℃, the pressure is 95kPa and the time is 12min. Finally, the in-situ encapsulation of the perovskite solar cell module is completed.
[0034] Comparative Example Please refer to Figure 2 As shown, the only difference between this comparative example and Example 1 is that the first barrier layer 2, the second barrier layer 3 and the third barrier layer 4 are not deposited on the surface of the back electrode layer of the perovskite solar cell module 1. Instead, the sealing film 5, the sealing strip 7 and the encapsulation backplate 6 are directly applied. The other steps and conditions are the same as those in Example 1, and will not be repeated here.
[0035] The perovskite solar cell modules encapsulated in Examples 1, 2, and the comparative example were subjected to damp heat aging tests, and the degradation data are shown in Table 1. Figure 3 The efficiency degradation comparison curves are shown. Damp heat aging test conditions: The encapsulated perovskite solar cell modules were placed in an environment with a temperature of 60±5℃ and a humidity of 85%RH. The PCE efficiency and degradation rate were tested after 500h, 1000h, 1500h and 2000h respectively.
[0036] Table 1. Damp-heat aging test degradation data of perovskite solar cell modules packaged in Examples 1, 2, and the comparative examples.
[0037] From Table 1, we can see that: After 2000 hours of damp heat aging test, the efficiency of the perovskite solar cell module after comparative encapsulation decreased from 17.39% to 15.58%, with a degradation rate of 8.1%.
[0038] After 2000 hours of damp heat aging test, the efficiency of the perovskite solar cell module encapsulated in Example 1 decreased from 17.40% to 16.21%, with a degradation rate of 6.8%.
[0039] After 2000 hours of damp heat aging test, the efficiency of the perovskite solar cell module encapsulated in Example 2 decreased from 17.46% to 16.45%, with a degradation rate of 5.8%.
[0040] This indicates that the in-situ encapsulation method of the perovskite battery module after encapsulation in this invention has better water and oxygen barrier effects, achieves efficient encapsulation and protection of the perovskite battery module, and can significantly improve the stability of the perovskite battery module.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A packaged perovskite solar cell module, characterized in that, Its internal structure, from top to bottom, includes a perovskite solar cell module, a first barrier layer, a second barrier layer, a third barrier layer, a sealing film, and an encapsulation backplate. A sealing strip is also provided between the perovskite solar cell module and the encapsulation backplate, and the sealing strip is located around the periphery of the first barrier layer, the second barrier layer, the third barrier layer, and the sealing film. The first barrier layer is attached to the back electrode layer located on the bottom surface of the perovskite solar cell module. The first barrier layer is made of polysilazane, the second barrier layer is made of a mixture of 3-mercaptopropyltrimethoxysilane and siloxane prepolymer, or a mixture of benzophenone and siloxane prepolymer, and the third barrier layer is made of polyimide.
2. The encapsulated perovskite solar cell module as described in claim 1, characterized in that, The thickness of the first barrier layer is 1~5μm.
3. An in-situ encapsulation method for a perovskite solar cell module as described in claim 1 or 2, characterized in that, Includes the following steps: Step 1: Deposit a first barrier layer on the surface of the cleaned perovskite solar cell module using a spraying or spin coating method, then deposit a second barrier layer on the surface of the first barrier layer, and then deposit a third barrier layer on the surface of the second barrier layer. Step 2: Apply a sealing film to the third barrier layer, and apply sealing strips around the first barrier layer, second barrier layer, third barrier layer and sealing film. Then apply an encapsulation backplate on the sealing film and sealing strips. Finally, place them together in a laminator for lamination to complete the in-situ encapsulation of the perovskite solar cell module.
4. The in-situ encapsulation method for the encapsulated perovskite solar cell module as described in claim 3, characterized in that, In step one, the material of the second barrier layer needs to be cured for 20-30 seconds using a 365nm or 385nm UV lamp after deposition.
5. The in-situ encapsulation method for the encapsulated perovskite solar cell module as described in claim 3, characterized in that, In step two, the lamination process conditions include a lamination temperature of 135~145℃, a pressure of 85~95kPa, and a time of 8~12min.
6. The in-situ encapsulation method for the encapsulated perovskite solar cell module as described in claim 3, characterized in that, The sealing film is a POE film, and the encapsulation backplate is glass.
7. The in-situ encapsulation method for the encapsulated perovskite solar cell module as described in claim 3, characterized in that, Includes the following steps: Step 11: The back electrode layer of the perovskite solar cell module is subjected to UV and ozone treatments for 30s each. A first barrier layer with a thickness of 1μm is deposited on the cleaned back electrode layer surface using a spin coating method. Then, a mixture of 3-mercaptopropyltrimethoxysilane and siloxane prepolymer is deposited on the surface of the first barrier layer and cured with a 365nm UV lamp for 30s to obtain a second barrier layer. Then, a third barrier layer is deposited on the surface of the second barrier layer. Step 12: Apply a sealing film to the third barrier layer. Apply butyl rubber as a sealing strip around the first barrier layer, the second barrier layer, the third barrier layer and the sealing film. Apply glass as an encapsulation backplate on the sealing film and sealing strip. Then put them into a laminator for lamination. The lamination temperature is 140℃, the pressure is 90kPa and the time is 10min. Finally, the in-situ encapsulation of the perovskite solar cell module is completed.
8. The in-situ encapsulation method for the encapsulated perovskite solar cell module as described in claim 3, characterized in that, Includes the following steps: Step 21: The back electrode layer of the perovskite solar cell module is subjected to UV and ozone treatment for 30 seconds each. The first barrier layer with a thickness of 5 μm is deposited on the cleaned back electrode layer surface by spin coating. A mixture of benzophenone and siloxane prepolymer is deposited on the surface of the first barrier layer and cured with a 385nm UV lamp for 20 seconds to obtain the second barrier layer; then a third barrier layer is deposited on the surface of the second barrier layer. Step 22: Apply a sealing film to the third barrier layer. Apply butyl rubber as a sealing strip around the first barrier layer, the second barrier layer, the third barrier layer and the sealing film. Apply glass as an encapsulation backplate on the sealing film and sealing strip. Then put them into a laminator for lamination. The lamination temperature is 140℃, the pressure is 90kPa and the time is 10min. Finally, the in-situ encapsulation of the perovskite solar cell module is completed.