Photovoltaic module electrode and photovoltaic cell
By adopting a double-layer structure of conductive layer and functional layer in photovoltaic modules, and using titanium dioxide to improve light reflection and absorption performance, the shortcomings of existing photovoltaic modules in improving photoelectric conversion efficiency are solved, and more efficient photoelectric conversion and EQE performance are achieved.
Patent Information
- Application Number
- CN202421158309.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-27
AI Technical Summary
There are still shortcomings in the existing photovoltaic modules in improving the photoelectric conversion efficiency, especially in the influence of dust particles and the limitations on light reflection performance during the process.
A double-layer structure consisting of a conductive layer and a functional layer is adopted. The functional layer contains titanium dioxide, which can not only protect the conductive layer, avoid the influence of dust, but also improve the light reflection and absorption performance, thereby improving the photoelectric conversion efficiency of photovoltaic devices.
Through the design of the double-layer structure, the adverse effects of dust on the device during the process are effectively avoided, and the photoelectric conversion efficiency and overall EQE performance of photovoltaic devices are improved.
Smart Images
Figure CN222655682U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a photovoltaic component electrode and a photovoltaic battery. Background Art
[0002] Perovskite materials have excellent photoelectric properties, and perovskite solar cells have broad application prospects. In applications, perovskite photovoltaic modules need to be assembled to improve power generation efficiency and obtain appropriate voltage and current. At present, the most important performance indicator of photovoltaic modules is photoelectric conversion efficiency. Therefore, there is still a need to continue to strengthen the improvement of photovoltaic module photoelectric conversion efficiency. Utility Model Content
[0003] Based on this, it is necessary to provide a photovoltaic module electrode and a photovoltaic cell to address the problem of how to improve the photoelectric conversion efficiency of photovoltaic modules.
[0004] A photovoltaic assembly electrode comprises a conductive layer and a functional layer laid on one side surface of the conductive layer.
[0005] In one embodiment, the conductive layer includes at least one of a metal oxide film, a metal film, and a composite film; the functional layer includes at least one of an electric anti-glue layer and an ultraviolet glue layer; the electric anti-glue layer contains titanium dioxide; and the ultraviolet glue layer contains titanium dioxide.
[0006] The photovoltaic module electrode has a double-layer structure consisting of a conductive layer and a functional layer. The functional layer can protect the conductive layer, preventing dust particles from falling on the conductive layer during laser and other processes, effectively preventing dust from causing adverse effects on the device during the process; the functional layer containing titanium dioxide enables the electrode to have a good light reflection effect, enhances the light absorption of the device, and thus improves the photoelectric conversion efficiency of the photovoltaic device; the functional layer containing titanium dioxide can also improve the overall EQE performance of the device, thereby improving the photoelectric conversion efficiency of the photovoltaic device.
[0007] In one embodiment, the anti-electrical glue layer contains silicone-modified acrylic anti-electrical glue.
[0008] In one embodiment, the metal oxide film includes at least one of an ITO film, an AZO film, and an ATO film; the metal film includes at least one of an Au film, an Ag film, and a Cu film; and the composite film includes at least one of a WO3 / Ag / WO3 composite film and an ITO / Cu composite film.
[0009] In one embodiment, the thickness of the conductive layer is 150-250 nm.
[0010] In one embodiment, the thickness of the functional layer is 150-250 um.
[0011] The utility model also provides a photovoltaic cell, comprising the photovoltaic component electrode as described above.
[0012] In one embodiment, the photovoltaic cell includes the following layered structures electrically connected in sequence from bottom to top: a substrate, a transparent electrode layer, a first interface layer, a perovskite layer, a second interface layer, and the photovoltaic module electrode as described above.
[0013] In one embodiment, the photovoltaic cell includes the following layered structures electrically connected in sequence from bottom to top: a substrate, a transparent electrode layer, a first interface layer, a perovskite layer, a second interface layer, the conductive layer, and the functional layer.
[0014] In one embodiment, the transparent electrode layer contains at least one of indium tin oxide and fluorine-doped tin oxide; the first interface layer contains PTAA, NiO, P3HT, copper phthalocyanine, PCBM, C 60 , SnO2, TiO2; the second interface layer contains PTAA, NiO, P3HT, copper phthalocyanine, PCBM, C 60 , SnO2, TiO2.
[0015] In one embodiment, the photovoltaic cell includes a first laser groove, a second laser groove and a third laser groove; the first laser groove penetrates the transparent electrode layer from top to bottom; the first interface layer extends from the first laser groove to the upper surface of the substrate; the second laser groove penetrates the second interface layer, the perovskite layer, and the first interface layer in sequence from top to bottom; the conductive layer extends from the second laser groove to the upper surface of the transparent electrode layer; the third laser groove penetrates the photovoltaic module electrode, the second interface layer, and the perovskite layer in sequence from top to bottom.
[0016] In one embodiment, the width of the first laser groove is 40~50 μm; the width of the second laser groove is 40~50 μm; the width of the third laser groove is 40~60 μm; the distance between the first laser groove and the second laser groove is 5~20 μm; the distance between the second laser groove and the third laser groove is 5~20 μm.
[0017] In one embodiment, the thickness of the substrate is 1~2 mm; the thickness of the transparent electrode layer is 200~300 nm; the thickness of the first interface layer is 10~25 nm; the thickness of the perovskite layer is 400~600 nm; and the thickness of the second interface layer is 10~50 nm.
[0018] In one embodiment, the laser wavelength for engraving the first laser groove is one of 1064 nm red light, 532 nm green light or 355 nm ultraviolet light; the laser wavelength for engraving the second laser groove is one of 1064 nm red light or 532 nm green light; the laser wavelength for engraving the third laser groove is one of 1064 nm red light, 532 nm green light or 355 nm ultraviolet light.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] The utility model provides a photovoltaic module electrode and photovoltaic cell, which has a double-layer structure consisting of a conductive layer and a functional layer. The functional layer can protect the conductive layer, prevent dust particles from falling on the conductive layer during laser and other processes, and effectively prevent dust from causing adverse effects on the device during the process; the functional layer containing titanium dioxide enables the electrode to have a good light reflection effect, strengthens the light absorption of the device, and thus improves the photoelectric conversion efficiency of the photovoltaic device; the functional layer containing titanium dioxide can also improve the overall EQE performance of the device, thereby improving the photoelectric conversion efficiency of the photovoltaic device.
[0021] The preparation method of the photovoltaic cell in the utility model is relatively simple, and does not require changing the coating process parameters. It only needs to modify the laser to achieve components of various specifications and sizes. The production is more flexible and is conducive to large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a structural diagram of the photovoltaic module electrode of the utility model;
[0023] Figure 2 This is a structural diagram of the photovoltaic cell of the utility model;
[0024] Figure 3 This is the EQE diagram of the photovoltaic cell device prepared in Example 3 and Comparative Example 1 in Experimental Example 3.
[0025] Explanation of the accompanying drawings: 1. Photovoltaic module electrode; 1-1. Functional layer; 1-2. Conductive layer; 2. Second interface layer; 3. Perovskite layer; 4. First interface layer; 5. Transparent electrode layer; 6. Substrate; 7. First laser groove; 8. Second laser groove; 9. Third laser groove. DETAILED DESCRIPTION
[0026] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0029] The reagents used in the following examples, unless otherwise specified, are all commercially available; the methods used in the following examples, unless otherwise specified, are all achievable by conventional methods.
[0030] Example 1
[0031] A photovoltaic module electrode (1), such as Figure 1 As shown, it comprises a conductive layer (1-2) and a functional layer (1-1) laid on one surface of the conductive layer (1-2).
[0032] The thickness of the conductive layer (1-2) is 150~250 nm, and the thickness of the functional layer (1-1) is 150~250 um.
[0033] The conductive layer (1-2) includes at least one of a metal oxide film, a metal film, and a composite film; the metal oxide film includes at least one of an ITO film, an AZO film, and an ATO film; the metal film includes at least one of an Au film, an Ag film, and a Cu film; and the composite film includes at least one of a WO3 / Ag / WO3 composite film and an ITO / Cu composite film.
[0034] The functional layer (1-1) includes at least one of an electric anti-adhesive layer and an ultraviolet adhesive layer; the electric anti-adhesive layer contains titanium dioxide; the ultraviolet adhesive layer contains titanium dioxide; and the average particle size of the titanium dioxide is 10 to 5000 nm.
[0035] Example 2
[0036] A photovoltaic cell, such as Figure 2 As shown, it includes the following layered structures electrically connected in sequence from bottom to top: a substrate (6), a transparent electrode layer (5), a first interface layer (4), a perovskite layer (3), a second interface layer (2), a conductive layer (1-2), and a functional layer (1-1), and also includes a first laser groove P1 (7), a second laser groove P2 (8), and a third laser groove P3 (9).
[0037] The first laser groove (7) penetrates the transparent electrode layer (5) from top to bottom; the first interface layer (4) extends from the first laser groove (7) to the upper surface of the substrate (6); the second laser groove (8) penetrates the second interface layer (2), the perovskite layer (3), and the first interface layer (4) in sequence from top to bottom; the conductive layer (1-2) extends from the second laser groove (8) to the upper surface of the transparent electrode layer (5); and the third laser groove (9) penetrates the photovoltaic module electrode (1), the second interface layer (2), and the perovskite layer (3) in sequence from top to bottom.
[0038] The thickness of the substrate (6) is 1-2 mm, the thickness of the transparent electrode layer is 200-300 nm, the thickness of the first interface layer (4) is 10-25 nm, the thickness of the perovskite layer (3) is 400-600 nm, and the thickness of the second interface layer (2) is 10-50 nm.
[0039] The width of the first laser groove (7) is 40-50 μm, the width of the second laser groove (8) is 40-50 μm, the width of the third laser groove (9) is 40-60 μm, the distance between the first laser groove (7) and the second laser groove (8) is 5-20 μm, and the distance between the second laser groove (8) and the third laser groove (9) is 5-20 μm.
[0040] The transparent electrode layer (5) contains at least one of indium tin oxide and fluorine-doped tin oxide; the first interface layer (4) contains PTAA, NiO, P3HT, copper phthalocyanine, PCBM, C 60 , SnO2, TiO2; the second interface layer (2) contains PTAA, NiO, P3HT, copper phthalocyanine, PCBM, C 60 , SnO2, TiO2.
[0041] Example 3
[0042] Prepare photovoltaic cells (the photovoltaic module electrode is a 200 nm ITO conductive layer + a 200 μm titanium dioxide functional layer).
[0043] Step 1: A 200 nm ITO transparent electrode layer is formed by vapor deposition on a glass substrate, and the ITO transparent electrode layer is P1 scribed using infrared light with a laser wavelength of 1064 nm (laser parameters 30w, frequency 200kHz). P1 scribe does not scratch the substrate, and the first laser groove is obtained.
[0044] Step 2: Prepare a 20 nm PTAA hole transport layer (i.e., the first interface layer) on the ITO transparent electrode layer by spin coating; prepare a 500 nm perovskite layer on the upper surface of the PTAA hole transport layer by spin coating; prepare a 20 nm C 60 Electron transport layer (i.e., second interface layer).
[0045] Step three, use green light with a laser wavelength of 532 nm to perform P2 scribing on the second interface layer (laser parameters 3w, frequency 36kHz). P2 scribing does not scratch the transparent electrode layer, and a second laser groove is obtained.
[0046] Step 4: Vapor deposit a 200 nm ITO (indium tin oxide) film (partially filled in the second laser groove) as a conductive layer on the second interface layer; prepare a 200 μm thick anti-electrode adhesive film on the ITO conductive layer by a liquid phase method (the anti-electrode adhesive is silicone-modified acrylic anti-electrode adhesive CA7001, doped with titanium dioxide with an average particle size of 10 nm and a rutile crystal form), anneal at 85°C for 10 minutes to form a functional layer to obtain a photovoltaic module electrode.
[0047] Step 5: Use green light with a laser wavelength of 532 nm to perform P3 scribing on the photovoltaic module electrode (laser parameters 1w, frequency 12kHz). P3 scribing does not scratch the first interface layer, forming a third laser groove to obtain a photovoltaic cell.
[0048] Example 4
[0049] Prepare photovoltaic cells (the photovoltaic module electrode is a 200 nm ITO conductive layer + a 200 μm titanium dioxide functional layer).
[0050] Step 1: A 200 nm ITO transparent electrode layer is formed by vapor deposition on a glass substrate, and the ITO transparent electrode layer is P1 scribed using infrared light with a laser wavelength of 1064 nm (laser parameters 30w, frequency 200kHz). P1 scribe does not scratch the substrate, and the first laser groove is obtained.
[0051] Step 2: Prepare a 20 nm PTAA hole transport layer (i.e., the first interface layer) on the ITO transparent electrode layer by spin coating; prepare a 500 nm perovskite layer on the upper surface of the PTAA hole transport layer by spin coating; prepare a 20 nm C 60 Electron transport layer (i.e., second interface layer).
[0052] Step three, use green light with a laser wavelength of 532 nm to perform P2 scribing on the second interface layer (laser parameters 3w, frequency 36kHz). P2 scribing does not scratch the transparent electrode layer, and a second laser groove is obtained.
[0053] Step 4: Vapor deposit a 200 nm ITO film (partially filled in the second laser groove) on the second interface layer as a conductive layer; prepare a 200 μm thick anti-electric glue film on the ITO conductive layer by a liquid phase method (the anti-electric glue is silicone-modified acrylic anti-electric glue CA7001, doped with titanium dioxide with an average particle size of 200 nm and anatase crystal form), anneal at 85°C for 10 minutes to form a functional layer to obtain a photovoltaic module electrode.
[0054] Step 5: Use green light with a laser wavelength of 532 nm to perform P3 scribing on the photovoltaic module electrode (laser parameters 1w, frequency 12kHz). P3 scribing does not scratch the first interface layer, forming a third laser groove to obtain a photovoltaic cell.
[0055] Comparative Example 1
[0056] Prepare photovoltaic cells (electrode is 200 nm ITO conductive layer).
[0057] The preparation method is basically the same as that of Example 3, except that there is no step 4.
[0058] Comparative Example 2
[0059] Prepare photovoltaic cells (electrode is 200 nm ITO conductive layer + 200 μm functional layer without titanium dioxide).
[0060] The preparation method is basically the same as that in Example 4, except that: titanium dioxide is not added in step 4, specifically: a 200 nm ITO film (partially filled in the second laser groove) is formed as a conductive layer by vapor deposition on the second interface layer; a 200 μm thick electric-proof glue film (the electric-proof glue is silicone-modified acrylic electric-proof glue CA7001) is prepared on the ITO conductive layer by a liquid phase method, and annealed at 85°C for 10 minutes to form a functional layer, thereby obtaining a photovoltaic module electrode.
[0061] Experimental Example 1
[0062] The performance of the photovoltaic cells prepared in Examples 3-4 and Comparative Examples 1-2 was tested under AM1.5G simulated sunlight.
[0063] The test results are shown in Table 1. Compared with Comparative Examples 1-2, the performance parameters of the photovoltaic devices prepared in Examples 3-4 are better, which proves that the photovoltaic module electrode of the utility model can effectively improve the performance and photoelectric conversion efficiency of photovoltaic cells.
[0064]
[0065] Experimental Example 2
[0066] The photovoltaic cell devices prepared in Example 3 and Comparative Example 1 were tested using a quantum efficiency testing device (EnliTech QE-R) to obtain an EQE graph.
[0067] Test results such as Figure 3 shown.
[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0069] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A photovoltaic module electrode, characterized in that: It comprises a conductive layer and a functional layer laid on one side of the conductive layer; The functional layer includes at least one of an electrical protection glue layer and an ultraviolet glue layer.
2. The photovoltaic module electrode according to claim 1, characterized in that: The conductive layer includes at least one of a metal oxide film, a metal film, and a composite film; The electric anti-corrosion glue layer contains titanium dioxide; the ultraviolet glue layer contains titanium dioxide.
3. The photovoltaic module electrode according to claim 2, characterized in that: The metal oxide film includes at least one of an ITO film, an AZO film, and an ATO film; The metal film includes at least one of an Au film, an Ag film, and a Cu film; The composite film includes at least one of a WO3 / Ag / WO3 composite film and an ITO / Cu composite film.
4. The photovoltaic module electrode according to claim 1, characterized in that: The thickness of the conductive layer is 150-250 nm.
5. The photovoltaic module electrode according to claim 1, characterized in that: The thickness of the functional layer is 150-250 um.
6. A photovoltaic cell, characterized in that: Comprising a photovoltaic module electrode as described in any one of claims 1 to 5.
7. The photovoltaic cell according to claim 6, characterized in that: The invention comprises the following layered structures electrically connected in sequence from bottom to top: a substrate, a transparent electrode layer, a first interface layer, a perovskite layer, a second interface layer, and a photovoltaic module electrode as claimed in any one of claims 1 to 5.
8. The photovoltaic cell according to claim 7, characterized in that: comprising a first laser groove, a second laser groove and a third laser groove; The first laser groove penetrates the transparent electrode layer from top to bottom; the first interface layer extends from the first laser groove to the upper surface of the substrate; The second laser groove sequentially penetrates the second interface layer, the perovskite layer, and the first interface layer from top to bottom; the conductive layer extends from the second laser groove to the upper surface of the transparent electrode layer; The third laser groove sequentially penetrates the photovoltaic module electrode, the second interface layer, and the perovskite layer from top to bottom.
9. The photovoltaic cell according to claim 8, characterized in that: The width of the first laser groove is 40-50 μm; the width of the second laser groove is 40-50 μm; the width of the third laser groove is 40-60 μm; The distance between the first laser groove and the second laser groove is 5-20 μm; the distance between the second laser groove and the third laser groove is 5-20 μm.
10. The photovoltaic cell according to claim 7, characterized in that: The thickness of the substrate is 1-2 mm; the thickness of the transparent electrode layer is 200-300 nm; the thickness of the first interface layer is 10-25 nm; the thickness of the perovskite layer is 400-600 nm; and the thickness of the second interface layer is 10-50 nm.