CN219019438U - Perovskite solar laminate cell, cell module and photovoltaic system - Google Patents
Perovskite solar laminate cell, cell module and photovoltaic system Download PDFInfo
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Abstract
The utility model is applicable to solar cell technical field, a perovskite solar energy laminating battery is provided, battery pack and photovoltaic system, perovskite solar energy laminating battery is including the first perovskite battery of laminating in proper order and setting up, composite layer and second perovskite battery, first electron transport layer and second hole transport layer interval in the first perovskite battery set up alternately in the one side that first perovskite light absorption layer deviates from the glass substrate, second electron transport layer and second electron transport layer interval in the second perovskite battery set up alternately in the back of second perovskite light absorption layer, need not to set up the transmission layer between glass substrate and first perovskite light absorption layer and between composite layer and the second perovskite battery, positive electrode and negative electrode set up respectively on second hole transport layer and second electron transport layer, need not to deposit on glass substrate and set up TCO conductive film electrode, parasitic absorption can be reduced, photoelectric conversion efficiency is improved.
Description
Technical Field
The application belongs to the technical field of solar cells, and particularly relates to a perovskite solar laminated cell, a cell assembly and a photovoltaic system.
Background
In the related art, perovskite solar cells in perovskite stacked cells are generally manufactured by adopting a double-sided electrode contact manner, wherein an electrode disposed on the back surface (i.e., a back surface) of the perovskite solar cell is generally a metal electrode, and an electrode disposed on the front surface (i.e., a light incident surface) of the perovskite solar cell is a transparent conductive thin film electrode (e.g., a TCO electrode). However, such an arrangement may result in the presence of TCO on the front light-entering surface and parasitic absorption by the transmission layer, resulting in a reduced capability of the perovskite light-absorbing layer and a reduced photoelectric conversion efficiency.
Disclosure of Invention
The application provides a perovskite solar cell, a cell assembly and a photovoltaic system, and aims to solve the technical problems that the perovskite solar cell in the existing perovskite solar cell can cause parasitic absorption of TCO and a transmission layer on a front light incident surface, so that the capability of a perovskite light absorption layer is reduced, and the photoelectric conversion efficiency is reduced.
The perovskite solar cell of the embodiment of the present application includes:
the perovskite type solar cell comprises a first perovskite cell, a composite layer and a second perovskite cell which are sequentially stacked, wherein the first perovskite cell is arranged on the front surface of the composite layer, and the second perovskite cell is arranged on the back surface of the composite layer;
the first perovskite battery comprises a glass substrate, a first perovskite light absorption layer and a first transmission layer which are sequentially stacked, wherein the first transmission layer is positioned between the composite layer and the first perovskite light absorption layer, and the first transmission layer comprises first electron transmission layers and first hole transmission layers which are alternately arranged at intervals;
the second perovskite battery comprises a second perovskite light absorption layer, a second transmission layer and an electrode which are sequentially stacked on the back surface of the composite layer, wherein the second transmission layer comprises second electron transmission layers and second hole transmission layers which are alternately arranged at intervals, and the electrode comprises a negative electrode arranged on the second electron transmission layer and a positive electrode arranged on the second hole transmission layer.
Further, the second electron transport layer corresponds to the position of the first electron transport layer, and the position of the second hole transport layer corresponds to the position of the first hole transport layer.
Further, the first electron transport layer and the first hole transport layer are isolated by a trench.
Further, the second electron transport layer and the second hole transport layer are isolated by a trench.
Further, the thicknesses of the first electron transport layer and the first hole transport layer are 10nm to 50nm, and the thicknesses of the second electron transport layer and the second hole transport layer are also 10nm to 50nm.
Still further, an antireflection film layer is further disposed between the first perovskite light absorption layer and the glass substrate.
Still further, the anti-reflection film layer comprises a MgF2 film layer.
Further, the thickness of the anti-reflection film layer is 50nm-200nm.
Further, the composite layer comprises a first region and a second region which are alternately arranged, the first region and the second region are insulated and isolated, the first electron transport layer is correspondingly arranged in the first region, and the first hole transport layer is arranged in the second region.
Further, the first region and the second region are isolated by a trench or an insulator.
The present application also provides a cell assembly comprising a plurality of perovskite solar cell stacks as described in any one of the preceding claims.
The application also provides a photovoltaic system comprising the battery assembly.
In the perovskite solar laminated cell, the cell assembly and the photovoltaic system of the embodiment of the application, the first electron transmission layer and the second hole transmission layer in the first perovskite cell are positioned on one side of the first perovskite light absorption layer, which is away from the glass substrate, namely, the first electron transmission layer and the second electron transmission layer are alternately arranged on the back surface of the first perovskite light absorption layer at intervals, and no electron transmission layer or hole transmission layer is required to be arranged between the glass substrate and the first perovskite light absorption layer, so that parasitic absorption can be effectively reduced, and meanwhile, the second electron transmission layer and the second electron transmission layer in the second perovskite cell are alternately arranged on the back surface of the second perovskite light absorption layer at intervals, and no electron transmission layer or hole transmission layer is required to be arranged between the composite layer and the second perovskite cell, so that parasitic absorption can be effectively reduced; in addition, the positive electrode and the negative electrode are respectively arranged on the second hole transmission layer and the second electron transmission layer (namely, the positive electrode and the negative electrode are both positioned on the back surface of the second perovskite battery), and a TCO conductive film electrode is not required to be deposited on a glass substrate, so that parasitic absorption can be further reduced, the light inlet quantity of the first perovskite light absorption layer and the second perovskite light absorption layer can be effectively increased, and the photoelectric conversion efficiency of the perovskite solar laminated battery can be improved.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
Fig. 1 is a schematic block diagram of a photovoltaic system provided in an embodiment of the present application;
FIG. 2 is a schematic block diagram of a battery assembly provided in an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a perovskite solar cell provided by an embodiment of the application;
FIG. 4 is another schematic cross-sectional view of a perovskite solar cell provided by an embodiment of the application;
FIG. 5 is a further schematic cross-sectional view of a perovskite solar cell provided by embodiments of the application;
fig. 6 is a schematic cross-sectional view of a perovskite solar cell provided in an embodiment of the application.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "front," "back," "upper," "lower," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize applications of other processes and/or usage scenarios for other materials.
In this application, through setting up first electron transport layer and second hole transport layer interval in first perovskite battery alternately in one side that first perovskite light-absorbing layer deviates from the glass substrate, second electron transport layer and second electron transport layer interval in the second perovskite battery set up alternately in the back of second perovskite light-absorbing layer, need not to set up the transport layer between glass substrate and first perovskite light-absorbing layer and between composite bed and second perovskite battery, positive electrode and negative electrode set up respectively on second hole transport layer and second electron transport layer, need not to deposit on glass substrate and set up TCO conductive film electrode, can reduce parasitic absorption, improve photoelectric conversion efficiency.
Example 1
Referring to fig. 1-2, a photovoltaic system 1000 in an embodiment of the present application may include a cell assembly 200 in an embodiment of the present application, and a plurality of perovskite solar cell stacks 100 in an embodiment of the present application may be included in the cell assembly 200 in an embodiment of the present application.
The perovskite solar cell stacks 100 in the cell assembly 200 may be sequentially connected in series to form a cell string, where each cell string may be connected in series, in parallel, or in a combination of series and parallel to achieve a current bus output, for example, connection between each cell sheet may be achieved by welding a solder strip, and connection between each cell string may be achieved by a bus bar.
Referring to fig. 3, the perovskite solar stacked cell 100 in the embodiment of the present application may include a first perovskite cell 10, a composite layer 20 and a second perovskite cell 30 stacked in this order, where the first perovskite cell 10 is disposed on the front side of the composite layer 20, and the second perovskite cell 30 is disposed on the back side of the composite layer 20, that is, the first perovskite cell 10 is a top cell, and the second perovskite cell 30 is a bottom cell.
The first perovskite solar cell 10 may include a glass substrate 11, a first perovskite light absorbing layer 12 and a first transporting layer 13 which are sequentially stacked, the first transporting layer 13 is located between the composite layer 20 and the first perovskite light absorbing layer 12, the first transporting layer 13 includes first electron transporting layers 131 and first hole transporting layers 132 alternately arranged at intervals, that is, a side of the glass substrate 11 is a front surface of the entire perovskite solar stacked cell 100, a side of the first perovskite light absorbing layer 12 facing the glass substrate 11 is a light receiving surface of the first perovskite light absorbing layer 12, and in the first perovskite solar cell 10, the first electron transporting layers 131 and the first hole transporting layers 132 may be alternately arranged at intervals along a horizontal direction on a back surface of the first perovskite solar cell 10;
the second perovskite battery 30 may include a second perovskite light absorbing layer 31, a second transport layer 32, and an electrode 33 sequentially stacked on the rear surface of the composite layer 20, the second transport layer 32 including a second electron transport layer 321 and a second hole transport layer 322 alternately disposed at intervals, and the electrode 33 may include a negative electrode 331 disposed on the second electron transport layer 321 and a positive electrode 332 disposed on the second hole transport layer 322, that is, in the second perovskite battery 30, the second electron transport layer 321 and the second hole transport layer 322 are both disposed on the rear surface of the second perovskite battery 30, and the positive electrode 332 and the rear electrode 33 are also disposed on the rear surface of the second perovskite battery 30.
In the perovskite solar laminated cell 100, the cell assembly 200 and the photovoltaic system 1000 according to the embodiments of the present application, the first electron transport layer 131 and the second hole transport layer 322 in the first perovskite cell 10 are alternately arranged at intervals on the side of the first perovskite light absorption layer 12 facing away from the glass substrate 11, that is, the first electron transport layer 131 and the second electron transport layer 321 are alternately arranged at intervals on the back surface of the first perovskite light absorption layer 12, no electron transport layer or hole transport layer is required to be arranged between the glass substrate 11 and the first perovskite light absorption layer 12, parasitic absorption can be effectively reduced, and meanwhile, the second electron transport layer 321 and the second electron transport layer 321 in the second perovskite cell 30 are alternately arranged at intervals on the back surface of the second perovskite light absorption layer 31, no electron transport layer or hole transport layer is required to be arranged between the composite layer 20 and the second perovskite light absorption layer 31, and parasitic absorption can also be effectively reduced; in addition, the positive electrode 332 and the negative electrode 331 are respectively disposed on the second hole transport layer 322 and the second electron transport layer 321 (i.e., the positive electrode 332 and the negative electrode 331 are both disposed on the back surface of the second perovskite battery 30), and the TCO conductive film electrode is not required to be disposed on the glass substrate 11, so that parasitic absorption can be further reduced, the light entering amounts of the first perovskite light absorbing layer 12 and the second perovskite light absorbing layer 31 can be effectively increased, and the photoelectric conversion efficiency of the perovskite solar laminated cell 100 can be improved.
Specifically, in embodiments of the present application, the glass substrate 11 may include one or more of float glass, embossed glass, tempered glass, anti-reflection glass, PET, PEN, PEI, PMMA. In this way, various forms of glass substrates 11 can be provided, which are convenient to select according to actual production conditions.
The transmittance of the glass substrate 11 may be greater than 90%. For example, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. In this way, the glass substrate 11 has high light transmittance, so that more sunlight can enter the perovskite solar cell 100, which is advantageous for improving photoelectric conversion efficiency. Preferably, the transmittance of the glass substrate 11 is 92%.
The material of the first perovskite light absorbing layer 12 and the second perovskite light absorbing layer 31 may be perovskite material with a crystal structure of ABX3, wherein a is one or more of cs+, CH (NH 2) 2+, ch3nh3+, C (NH 2) 3+, B is at least one of pb2+, sn2+, and X is one or more of Br-, I-, and Cl-.
For example, A is Cs+, B is Pb2+, and X is Br-; for another example, A is Cs+ and CH (NH 2) 2+, B is Pb2+, and X is Br-; for another example, A is Cs+, B is Pb2+ and Sn2+, and X is Br-; for example, A is Cs+, B is Pb2+, X is Br-and I-; for another example, A is CH3NH3+ and C (NH 2) 3+, B is Pb2+, X is I-and Cl-; for another example, A is Cs+, CH (NH 2) 2+, CH3NH3+ and C (NH 2) 3+, B is Pb2+ and Sn2+, and X is Br-, I-, and Cl-.
The composite layer 20 may be an ITO layer, an ultra-thin silver layer, or a laminated ITO layer and ultra-thin silver layer. In this way, the first perovskite battery 10 and the second perovskite battery 30 can be electrically conducted, and the normal function of the perovskite solar laminated cell is ensured.
Further, it is understood that the first electron transport layer 131 and the second electron transport layer 321 refer to a film layer capable of transporting electron carriers and blocking holes. The first hole transport layer 132 and the second hole transport layer 322 refer to film layers capable of transporting hole carriers and blocking electrons.
Specifically, in the embodiments of the present application, the first electron transport layer 131 and the second electron transport layer 321 may be a zinc oxide (ZnO) layer, a titanium oxide (TiO) 2 ) Layers, or tin oxide (SnO) 2 ) Layer, zinc stannate (ZnSnO) 4 ) One or more of the layers. The first hole transport layer 132 and the second transport layer 32 may include PEDOT: PSS layer, spiro-oMeTad layer, niOx layer, moO 3 At least one of layer and CuSCN layer.
In this way, holes and electrons of the first perovskite light absorbing layer 12 excited by sunlight can be timely transmitted through the first electron transmitting layer 131 and the first hole transmitting layer 132, and holes and electrons of the second perovskite light absorbing layer 31 excited by sunlight can be timely transmitted through the second electron transmitting layer 321, so that the influence of accumulation of the holes and electrons on the service life of the perovskite solar laminated cell is avoided.
Further, in the embodiments of the present application, the materials of the positive electrode 332 and the negative electrode 331 may be one or more of gold, silver, aluminum, and graphene, and is not particularly limited herein.
In the embodiments of the present application, the perovskite solar laminate cell 100 may be manufactured by the following steps: cleaning the glass substrate; depositing a first perovskite light absorbing layer 12 on the cleaned glass substrate; depositing a first electron transport layer 131 on the first perovskite light absorption layer 12 using a reticle; depositing a first hole transport layer 132 on the first perovskite light absorbing layer 12 using another mask, the two masks being complementary such that the first electron transport layer 131 and the second electron transport layer are alternately arranged; a composite layer 20 may be deposited on the first electron transport layer 131 and the first hole transport layer 132; depositing a second perovskite light absorbing layer 31 on the composite layer 20; depositing a second electron transport layer 321 and a second hole transport layer 322 on the second perovskite light absorption layer 31 by using a mask plate, wherein the deposition method is the same as that of the first electron transport layer 131 and the first hole transport layer 132; a negative electrode 331 is prepared on the second electron transport layer 321 and a positive electrode 332 is prepared on the second hole transport layer 322.
Specifically, in cleaning the glass substrate 11, the glass substrate 11 may be sequentially cleaned with a phosphorus-free cleaner, deionized water, acetone, IPA with ultrasonic waves; and then high-purity nitrogen is utilized for purging. Further, the ultrasonic cleaning time is 10min-20min, such as 12min, 15min, 18min, and 20min. Preferably, the ultrasonic cleaning is for 15 minutes. Therefore, the cleaning effect is better, and the subsequent deposition of the film layer is facilitated.
In depositing one of the above films, one or more of solution coating, physical vapor deposition, screen printing, chemical vapor deposition, electroplating, electroless plating, and ion plating may be used.
Further, it is understood that in embodiments of the present application, the battery assembly 200 may further include a metal frame, a back sheet, photovoltaic glass, and a glue film (none of which are shown). The adhesive film may be filled between the front surface and the photovoltaic glass of the perovskite solar laminate cell 100, between the back surface and the back plate, between the adjacent cells, etc., and may be a transparent adhesive body with good light transmittance and ageing resistance, for example, the adhesive film may be an EVA adhesive film or a POE adhesive film, which may be specifically selected according to practical situations, and is not limited herein.
The photovoltaic glass may be coated on the adhesive film on the front surface of the perovskite solar laminate cell 100, and the photovoltaic glass may be ultra-white glass having high light transmittance, high transparency, and excellent physical, mechanical, and optical properties, for example, the ultra-white glass may have a light transmittance of 92% or more, which may protect the perovskite solar laminate cell 100 without affecting the efficiency of the perovskite solar laminate cell 100 as much as possible. Meanwhile, the photovoltaic glass and the perovskite solar laminated cell 100 can be bonded together by the adhesive film, and the perovskite solar laminated cell 100 can be sealed and insulated and waterproof and moistureproof by the adhesive film.
The back plate can be attached to the adhesive film on the back surface of the perovskite solar laminated cell 100, can protect and support the perovskite solar laminated cell 100, has reliable insulativity, water resistance and aging resistance, can be selected multiple times, and can be toughened glass, organic glass, an aluminum alloy TPT composite adhesive film and the like, and the back plate can be specifically set according to specific conditions and is not limited herein. The whole of the back sheet, the perovskite solar laminate cell 100, the adhesive film, and the photovoltaic glass may be provided on a metal frame, which serves as a main external support structure of the entire cell assembly 200, and may stably support and mount the cell assembly 200, for example, the cell assembly 200 may be mounted at a desired mounting position through the metal frame.
Further, in the present embodiment, the photovoltaic system 1000 may be applied to a photovoltaic power station, such as a ground power station, a roof power station, a water power station, or the like, and may also be applied to a device or apparatus that generates electricity using solar energy, such as a user solar power source, a solar street lamp, a solar car, a solar building, or the like. Of course, it is understood that the application scenario of the photovoltaic system 1000 is not limited thereto, that is, the photovoltaic system 1000 may be applied in all fields where solar energy is required to generate electricity. Taking a photovoltaic power generation system network as an example, the photovoltaic system 1000 may include a photovoltaic array, a junction box and an inverter, where the photovoltaic array may be an array combination of a plurality of battery assemblies 200, for example, a plurality of battery assemblies 200 may form a plurality of photovoltaic arrays, the photovoltaic array is connected to the junction box, the junction box may junction currents generated by the photovoltaic array, and the junction box may convert the junction currents into alternating currents required by a utility power network through the inverter, and then access the utility power network to realize solar power supply.
Referring to fig. 3, in some embodiments, the first electron transport layer 131 and the first hole transport layer 132 may be isolated by a trench. In this way, the first electron transport layer 131 and the first hole transport layer 132 can be insulated and isolated by the trench, so that the perovskite solar laminated cell 100 can work normally, and the manufacture can be facilitated by isolating by the trench (only a mask plate is used for depositing the first electron transport layer 131 and the first hole transport layer 132), which is beneficial to improving the production efficiency.
Further, in some embodiments, the second electron transport layer 321 and the second hole transport layer 322 may also be isolated by a trench.
Specifically, as shown in fig. 3, in the embodiment shown in fig. 3, the grooves between the second electron transport layer 321 and the second hole transport layer 322 may separate both the second electron transport layer 321 and the second hole transport layer 322 and the positive electrode 332 and the negative electrode 331.
It is understood that the above-described trenches between the first electron transport layer 131 and the first hole transport layer 132 and the trenches between the second electron transport layer 321 and the second hole transport layer 322 may be formed by covering the regions corresponding to the trenches with a mask.
Example two
Referring to fig. 3, the second electron transport layer 321 corresponds to the position of the first electron transport layer 131, that is, the orthographic projections of the second electron transport layer 321 and the first electron transport layer 131 in the thickness direction completely coincide, and the position of the second hole transport layer 322 corresponds to the position of the first hole transport layer 132, that is, the orthographic projections of the second hole transport layer 322 and the first hole transport layer 132 in the thickness direction completely coincide.
Thus, when the first electron transport layer 131 and the second electron transport layer 321 are deposited, a set of masks can be shared, and an additional set of masks is not required to be added to deposit the first electron transport layer 131 and the second electron transport layer 321 respectively. Similarly, when the first hole transport layer 132 and the second hole transport layer 322 are deposited, a set of masks may be shared, and an additional set of masks is not required to be added to deposit the first hole transport layer 132 and the second hole transport layer 322 respectively.
Example III
In some embodiments, the thicknesses of the first electron transport layer 131 and the first hole transport layer 132 may each be 10nm to 50nm, and the thicknesses of the second electron transport layer 321 and the second hole transport layer 322 may also each be 10nm to 50nm.
In this way, setting the thicknesses of the first electron transport layer 131, the first hole transport layer 132, the second electron transport layer 321, and the second hole transport layer 322 within this appropriate range can ensure the transport effect of holes and electrons, and can also avoid that the thicknesses thereof are too thick, resulting in a thicker overall thickness and resulting in an increase in cost.
Specifically, in such an embodiment, the thicknesses of the first electron transport layer 131, the first hole transport layer 132, the second electron transport layer 321, and the second hole transport layer 322 may be, for example, any of 10nm, 15nm, 20nm, 30nm, 40nm, 45nm, 50nm, and 10nm to 50nm, and are not particularly limited herein.
Example IV
Referring to fig. 4, in some embodiments, an anti-reflection film layer 14 may be further disposed between the first perovskite light absorbing layer 12 and the glass substrate 11.
In this way, by providing the antireflection film layer 14 between the glass substrate 11 and the first perovskite light absorbing layer 12, the reflectance of light can be reduced, the transmittance of light can be improved, and the light utilization can be further improved.
Specifically, in such embodiments, the anti-reflection film layer 14 may include a MgF2 (magnesium fluoride) film layer. Of course, in other embodiments, the antireflection film 14 may be a lithium fluoride film, which is not limited herein.
Further, in some embodiments, the thickness of the anti-reflection film layer 14 may be 50nm-200nm.
In this way, by setting the thickness of the antireflection film layer 14 within the above reasonable range, the light utilization rate can be improved, and the thickness of the antireflection film layer 14 is prevented from being too thick to cause larger parasitic absorption, and the thickness of the perovskite solar cell stack 100 is prevented from being too thick.
Specifically, in such embodiments, the thickness of the anti-reflection film layer 14 may be any number between 50nm, 60nm, 70nm, 80nm, 90nm, 100nm, 150nm, 200nm, or 50nm-200nm, and is not limited herein.
Example five
Referring to fig. 5, in some embodiments, the composite layer 20 may include first regions 21 and second regions 22 alternately arranged in sequence, the first regions 21 and the second regions 22 are insulated from each other, the first electron transport layer 131 is correspondingly arranged in the first regions 21, and the first hole transport layer 132 is arranged in the second regions 22.
In this way, the first region 21 and the second region 22 of the composite layer 20 are insulated from each other, so that the first electron transport layer 131 and the first hole transport layer 132 are separately connected to the composite layer 20, and carriers are prevented from being compounded in the composite layer 20, so as to improve the filling factor.
Specifically, as illustrated in fig. 5, in some embodiments, as with the structures similar to the first electron transport layer 131 and the first hole transport layer 132, the first region 21 and the second region 22 of the composite layer 20 may be insulated by trenches, that is, the composite layer 20 may be a partition structure, in which case the composite layer 20 may be deposited first and then etched to form the trenches by providing a mask.
Of course, referring to fig. 6, in some embodiments, the first region 21 and the second region 22 may be isolated by the insulator 23, that is, an insulating object may be deposited between two adjacent first regions 21 and second regions 22 to achieve the isolation between the first regions 21 and the second regions 22 to avoid carrier recombination, and the specific isolation is not limited herein.
In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the foregoing description of the preferred embodiment is provided for the purpose of illustration only, and is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.
Claims (12)
1. The perovskite solar laminated cell is characterized by comprising a first perovskite cell, a composite layer and a second perovskite cell which are sequentially laminated, wherein the first perovskite cell is arranged on the front surface of the composite layer, and the second perovskite cell is arranged on the back surface of the composite layer;
the first perovskite battery comprises a glass substrate, a first perovskite light absorption layer and a first transmission layer which are sequentially stacked, wherein the first transmission layer is positioned between the composite layer and the first perovskite light absorption layer, and the first transmission layer comprises first electron transmission layers and first hole transmission layers which are alternately arranged at intervals;
the second perovskite battery comprises a second perovskite light absorption layer, a second transmission layer and an electrode which are sequentially stacked on the back surface of the composite layer, wherein the second transmission layer comprises second electron transmission layers and second hole transmission layers which are alternately arranged at intervals, and the electrode comprises a negative electrode arranged on the second electron transmission layer and a positive electrode arranged on the second hole transmission layer.
2. The perovskite solar cell of claim 1, wherein the second electron transport layer corresponds to a location of the first electron transport layer and the second hole transport layer corresponds to a location of the first hole transport layer.
3. The perovskite solar cell of claim 1, wherein the first electron transport layer and the first hole transport layer are isolated by a trench.
4. The perovskite solar cell of claim 1, wherein the second electron transport layer and the second hole transport layer are isolated by a trench.
5. The perovskite solar cell of claim 1, wherein the first electron transport layer and the first hole transport layer each have a thickness of 10nm to 50nm, and the second electron transport layer and the second hole transport layer each have a thickness of 10nm to 50nm.
6. The perovskite solar cell of claim 1, wherein an anti-reflection film layer is further disposed between the first perovskite light absorbing layer and the glass substrate.
7. The perovskite solar cell of claim 6, wherein the anti-reflection film layer comprises a MgF2 film layer.
8. The perovskite solar cell of claim 7, wherein the thickness of the anti-reflection film layer is 50nm to 200nm.
9. The perovskite solar cell of claim 1, wherein the composite layer comprises first regions and second regions that are alternately arranged in sequence, the first regions and the second regions are insulated from each other, the first electron transport layer is correspondingly arranged in the first regions, and the first hole transport layer is arranged in the second regions.
10. The perovskite solar cell of claim 9, wherein the first region and the second region are isolated by a trench or insulator insulation.
11. A cell assembly comprising a perovskite solar cell stack as claimed in any one of claims 1 to 10.
12. A photovoltaic system comprising the cell assembly of claim 11.
Priority Applications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135937A (en) * | 2023-10-27 | 2023-11-28 | 宁德时代新能源科技股份有限公司 | Perovskite battery, photovoltaic module, photovoltaic system and power consumption device |
| CN117279408A (en) * | 2023-11-15 | 2023-12-22 | 天合光能股份有限公司 | Laminated battery and preparation method thereof |
| CN117412617A (en) * | 2023-12-15 | 2024-01-16 | 天合光能股份有限公司 | Laminated solar cell, manufacturing method thereof, photovoltaic module and photovoltaic system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135937A (en) * | 2023-10-27 | 2023-11-28 | 宁德时代新能源科技股份有限公司 | Perovskite battery, photovoltaic module, photovoltaic system and power consumption device |
| CN117135937B (en) * | 2023-10-27 | 2024-03-29 | 宁德时代新能源科技股份有限公司 | Perovskite battery, photovoltaic module, photovoltaic system and power consumption device |
| CN117279408A (en) * | 2023-11-15 | 2023-12-22 | 天合光能股份有限公司 | Laminated battery and preparation method thereof |
| CN117279408B (en) * | 2023-11-15 | 2024-02-27 | 天合光能股份有限公司 | Laminated battery and preparation method thereof |
| CN117412617A (en) * | 2023-12-15 | 2024-01-16 | 天合光能股份有限公司 | Laminated solar cell, manufacturing method thereof, photovoltaic module and photovoltaic system |
| CN117412617B (en) * | 2023-12-15 | 2024-04-19 | 天合光能股份有限公司 | Laminated solar cell, manufacturing method thereof, photovoltaic module and photovoltaic system |
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