CN219628267U

CN219628267U - Solar laminated battery, battery assembly and photovoltaic system

Info

Publication number: CN219628267U
Application number: CN202320242608.XU
Authority: CN
Inventors: 王皓正; 邱开富; 王永谦; 陈刚
Original assignee: Zhejiang Aiko Solar Energy Technology Co Ltd; Guangdong Aiko Technology Co Ltd; Tianjin Aiko Solar Energy Technology Co Ltd; Zhuhai Fushan Aixu Solar Energy Technology Co Ltd
Current assignee: Zhejiang Aiko Solar Energy Technology Co Ltd; Guangdong Aiko Technology Co Ltd; Tianjin Aiko Solar Energy Technology Co Ltd; Zhuhai Fushan Aixu Solar Energy Technology Co Ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-09-01
Anticipated expiration: 2033-02-03

Abstract

The utility model is suitable for the technical field of solar cells, and provides a solar laminated cell, a cell assembly and a photovoltaic system. The solar laminated battery comprises an organic battery, a first composite layer, a crystalline silicon battery, a second composite layer and a perovskite battery which are sequentially laminated; the organic battery comprises a first electrode, a first transmission layer, an organic light absorption layer and a second transmission layer which are sequentially stacked, wherein the second transmission layer is positioned between the organic light absorption layer and the first composite layer; the perovskite battery comprises a third transmission layer, a perovskite light absorption layer, a fourth transmission layer and a second electrode which are sequentially stacked, wherein the third transmission layer is positioned between the second composite layer and the perovskite light absorption layer. Therefore, the organic battery, the crystalline silicon battery and the perovskite battery are combined, the organic battery can convert indoor light into electricity, the crystalline silicon battery and the perovskite battery can convert outdoor light into electricity, and accordingly the light utilization rate can be greatly improved, and the photoelectric conversion efficiency of building unit area is improved.

Description

Solar laminated battery, battery assembly and photovoltaic system

Technical Field

The utility model belongs to the technical field of solar cells, and particularly relates to a solar laminated cell, a cell assembly and a photovoltaic system.

Background

Solar cell power generation is a sustainable clean energy source that uses the photovoltaic effect of semiconductor p-n junctions to convert sunlight into electrical energy. In the existing building integration, a semitransparent thin film solar cell is generally used as a window, or a silicon cell is placed on a roof for use. The current solar cell has low photoelectric conversion efficiency in unit area, and has no method for effectively utilizing indoor light.

Disclosure of Invention

The embodiment of the utility model provides a solar laminated battery, a battery assembly and a photovoltaic system, which aim to solve the problem of low photoelectric conversion efficiency of a unit area of a traditional solar battery.

The embodiment of the utility model is realized in such a way that the solar laminated battery provided by the utility model comprises an organic battery, a first composite layer, a crystalline silicon battery, a second composite layer and a perovskite battery which are laminated in sequence; the organic battery comprises a first electrode, a first transmission layer, an organic light absorption layer and a second transmission layer which are sequentially stacked, wherein the second transmission layer is positioned between the organic light absorption layer and the first composite layer; the perovskite battery comprises a third transmission layer, a perovskite light absorption layer, a fourth transmission layer and a second electrode which are sequentially stacked, wherein the third transmission layer is positioned between the second composite layer and the perovskite light absorption layer.

Further, the thickness of the organic light absorbing layer is 80nm to 120nm.

Further, the organic light-absorbing layer comprises a donor and a receptor, wherein the donor is prepared from a P-type material, and the P-type material is one of PM6, PM7, PTB7-TH and D18; the receptor is prepared from an N-type material, wherein the N-type material is one of IEICO-4F, IT-4F, Y6, Y7 and ITIC.

Further, the thickness of the first transmission layer and the second transmission layer is 30 nm-50 nm.

Still further, the first transport layer is PEDOT: at least one of a PSS layer, a NiOx layer, a MoO3 layer and a CuSCN layer.

Further, the second transmission layer is ZnO layer or SnO layer ₂ At least one of the layers.

Further, the third transport layer is SnO ₂ Layer, tiO ₂ Layer, znSnO ₄ At least one of the layers.

Still further, the fourth transmission layer is PEDOT: PSS layer, spiro-oMeTad layer, niO _X At least one of layer and CuSCN layer.

Still further, the crystalline silicon battery comprises a first passivation layer, a second passivation layer, a first polycrystalline silicon layer, a first tunneling layer, a crystalline silicon layer, a second tunneling layer, a second polycrystalline silicon layer, a third passivation layer and a fourth passivation layer which are sequentially stacked, and the first passivation layer is connected with the first composite layer.

The utility model also provides a battery assembly comprising the solar laminated battery of any one of the above.

The utility model also provides a photovoltaic system, which comprises the battery assembly.

The beneficial effects achieved by the utility model are as follows: the organic battery, the crystalline silicon battery and the perovskite battery are combined, the organic battery can convert indoor light into electricity, the crystalline silicon battery and the perovskite battery can convert outdoor light into electricity, and therefore the light utilization rate and the photoelectric conversion efficiency of a building unit area can be greatly improved.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

FIG. 1 is a schematic block diagram of a photovoltaic system provided by an embodiment of the present utility model;

fig. 2 is a schematic block diagram of a battery assembly according to an embodiment of the present utility model;

fig. 3 is a schematic cross-sectional view of a solar laminated cell according to an embodiment of the present utility model.

Description of main reference numerals:

the photovoltaic system 1000, the cell assembly 100, the solar laminate cell 10, the cell 11, the first electrode 111, the first transmission layer 112, the organic light absorbing layer 113, the second transmission layer 114; a first composite layer 12;

the crystalline silicon cell 13, the first passivation layer 131, the second passivation layer 132, the first polysilicon layer 133, the first tunneling layer 134, the crystalline silicon layer 135, the second tunneling layer 136, the second polysilicon layer 137, the third passivation layer 138, the fourth passivation layer 139; a second composite layer 14;

a perovskite cell 15, a third transport layer 151, a perovskite light absorbing layer 152, a fourth transport layer 153, a second electrode 154.

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 "length," "width," "upper," "lower," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, 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 referred to must have a specific orientation, be configured 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 description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

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.

Example 1

Referring to fig. 1 and 2, a photovoltaic system 1000 according to an embodiment of the present utility model may include a cell assembly 100 according to an embodiment of the present utility model, and the cell assembly 100 according to an embodiment of the present utility model may include a solar laminate cell 10 according to an embodiment of the present utility model.

Referring to fig. 3, the solar laminate cell 10 includes an organic cell 11, a first composite layer 12, a crystalline silicon cell 13, a second composite layer 14, and a perovskite cell 15, which are sequentially stacked. The organic cell 11 includes a first electrode 111, a first transmission layer 112, an organic light-absorbing layer 113, and a second transmission layer 114, which are sequentially stacked, the second transmission layer 114 being located between the organic light-absorbing layer 113 and the first composite layer 12. The perovskite battery 15 includes a third transport layer 151, a perovskite light absorbing layer 152, a fourth transport layer 153, and a second electrode 154, which are sequentially stacked, the third transport layer 151 being located between the second composite layer 14 and the perovskite light absorbing layer 152.

Thus, the organic battery 11, the crystalline silicon battery 13 and the perovskite battery 15 are combined, the organic battery 11 can convert indoor light into electricity, the crystalline silicon battery 13 and the perovskite battery 15 can convert outdoor light into electricity, and therefore the light utilization rate and the photoelectric conversion efficiency of a building unit area can be greatly improved.

It can be appreciated that, since the organic battery 11 has an advantage that it can absorb weak light, the crystalline silicon battery 13 and the perovskite battery 15 can absorb outdoor light, in the solar laminate battery 10 of the embodiment of the present utility model, the organic battery 11, the crystalline silicon battery 13 and the perovskite battery 15 are combined into a laminate battery, and the organic battery 11 can be placed toward the indoor side and the perovskite battery 15 placed toward the outdoor side in use, so that the solar laminate battery 10 can use both indoor light and outdoor light to generate electricity.

The first composite layer 12 is used for realizing the electrical conduction between the organic battery 11 and the crystalline silicon battery 13, and the second composite layer 14 is used for realizing the electrical conduction between the crystalline silicon battery 13 and the perovskite battery 15. In the process of preparing the solar laminated cell 10, the crystalline silicon cell 13 may be prepared first, then the first composite layer 12 and the second composite layer 14 may be prepared, and then the perovskite cell 15 and the cell 11 may be prepared.

Specifically, the organic light absorbing layer 113 may include a donor and a acceptor, and a solution is prepared after the donor and the acceptor are uniformly dissolved, and finally the solution is deposited to form a deposition layer. The organic light absorbing layer 113 may have a better absorption efficiency in indoor or low light environments.

One of the first transport layer 112 and the second transport layer 114 is an electron transport layer, and the other is a hole transport layer. In this way, holes and electrons excited by indoor light can be timely transported through the first transport layer 112 and the second transport layer 114, and the accumulation of holes and electrons is prevented from affecting the lifetime of the solar laminate cell 10. The hole transport layer may also block electrons and the electron transport layer may also block holes, thereby reducing hole and electron recombination.

Specifically, the crystal structure of the material of the perovskite light absorbing layer 152 may be ABX3 type, a is at least one of cs+, CH (NH 2) 2+, ch3nh3+, C (NH 2) 3+, B is at least one of pb2+, sn2+, and X is at least one of Br-, I-, and Cl-. Thus, the appropriate material can ensure that the perovskite light absorbing layer 152 has a good light absorbing effect, which is beneficial to improving the photoelectric conversion efficiency of the perovskite battery 15.

In certain embodiments, the perovskite light absorbing layer 152 may have a thickness of 300nm to 600nm. The thickness of the perovskite light absorbing layer 152 may be 300nm, 400nm, 500nm, 600nm, or any value within a range of values defined by any two of the above. In this way, the thickness of the perovskite light absorbing layer 152 is in a proper range, so as to ensure the light absorbing effect of the perovskite solar cell 15, and facilitate improving the photoelectric conversion efficiency of the solar laminated cell 10.

Specifically, one of the third and fourth transport layers 151 and 153 is an electron transport layer, and the other is a hole transport layer. In this way, holes and electrons excited by the outdoor light can be timely transmitted through the third and fourth transmission layers 151 and 153, and the accumulation of holes and electrons is prevented from affecting the life of the solar laminate cell 10. The hole transport layer may also block electrons and the electron transport layer may also block holes, thereby reducing hole and electron recombination.

In some embodiments, transparent conductive oxides including, but not limited to, indium Tin Oxide (ITO), indium tungsten oxide, aluminum doped zinc oxide (AZO), boron doped zinc oxide, fluorine doped tin oxide (FTO), etc. may be preferably used in the first and second composite layers 12 and 14, such that the first composite layer 12 may electrically conduct the cell 11 and the crystalline silicon cell 13, and the second composite layer 14 may electrically conduct the crystalline silicon cell 13 and the perovskite cell 15, thereby ensuring the normal function of the solar laminate cell 10.

In such an embodiment, the thickness of both the first composite layer 12 and the second composite layer 14 may be 20nm to 60nm. The thickness of the first composite layer 12 and the second composite layer 14 may be 20nm, 30nm, 40nm, 50nm, 60nm, or any value within a range of values defined by any two of the above values. The thicknesses of the first composite layer 12 and the second composite layer 14 are in a proper range, so that poor conductive effect of the composite layers caused by too small thickness can be avoided, and waste of materials caused by too large thickness can also be avoided.

In some alternative embodiments, the first composite layer 12 and the second composite layer 14 may be made of ultra-thin silver materials, and in this embodiment, the thickness of each of the first composite layer 12 and the second composite layer 14 may be 1nm to 5nm, for example, 1nm, 2nm, 3nm, 4nm, 5nm, or any value within a range defined by any two values.

The materials of the first composite layer 12 and the second composite layer 14 may be the same or different, and are not limited herein.

Further, the first electrode 111 and the second electrode 154 may include a transparent conductive oxide (Transparent Conductive Oxide, TCO). Thus, the TCO can effectively collect the current of the solar laminate cell 10, and ensure the normal operation of the solar laminate cell 10. Moreover, the light source has high permeability and can reduce reflection, and can reduce the loss of sunlight, thereby being beneficial to improving the photoelectric conversion efficiency.

Further, the transparent conductive oxide may be one or more of fluorine doped tin oxide (FTO) glass, indium doped tin oxide (ITO) glass, aluminum doped zinc oxide (AZO), aluminum doped tin oxide (ATO), indium doped gallium oxide (IGO). Thus, the electrode made of a material having a good electrical conductivity is selected to better conduct current from the solar cell 10.

In this embodiment, the thickness of each of the first electrode 111 and the second electrode 154 may be 100nm to 150nm. The thicknesses of the first electrode 111 and the second electrode 154 may be 100nm, 110nm, 120nm, 130nm, 140nm, 150nm, or any value within a range defined by any two values. In this way, it is possible to avoid the effect of current conduction being poor due to the too small thickness of the first electrode 111 and the second electrode 154, and also to avoid the material waste due to the too large thickness of the first electrode 111 and the second electrode 154.

In some alternative embodiments, the first electrode 111 and the second electrode 154 may be made of at least one of ultra-thin gold, ultra-thin silver, or graphene, and in this embodiment, the thickness of each of the first electrode 111 and the second electrode 154 may be 10nm to 20nm, for example, 10nm, 12nm, 15nm, 17nm, 20nm, or any value within a range defined by any two values.

The materials of the first electrode 111 and the second electrode 154 may be the same or different, and are not limited herein.

Further, it is understood that in embodiments of the present utility model, the battery assembly 100 may further include a metal frame, a back sheet, photovoltaic glass, and a glue film (all not shown). The adhesive film may be filled between the front and back surfaces of the solar laminated cell 10, the photovoltaic glass, the back plate, and the adjacent cells, and the adhesive film may be a transparent adhesive with good light transmittance and aging 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 cover the solar laminate cell 10, 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 solar laminate cell 10 without affecting the efficiency of the solar laminate cell 10 as much as possible. Meanwhile, the photovoltaic glass and the solar laminated battery 10 can be bonded together by the adhesive film, and the solar laminated battery 10 can be sealed and insulated by the adhesive film to realize water and moisture resistance.

The back plate can be attached to the back surface of the solar laminated cell 10, can protect and support the solar laminated cell 10, has reliable insulativity, water resistance and aging resistance, can be selected multiple times, can be toughened glass, organic glass, an aluminum alloy TPT composite adhesive film and the like, and can be specifically set according to specific conditions without limitation.

The whole of the back sheet, solar laminate cell 10, adhesive film and photovoltaic glass may be provided on a metal frame, which serves as a main external support structure for the entire cell assembly 100, to provide stable support and mounting for the cell assembly 100, for example, the cell assembly 100 may be mounted at a desired mounting position by 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 100, for example, a plurality of battery assemblies 100 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.

Example two

In some embodiments, the organic light absorbing layer 113 has a thickness of 80nm to 120nm. In this way, the thickness of the organic light absorption layer 113 is set in a suitable range, so that the effect of the solar laminated cell 10 on light absorption and transmission is suitable, and the photoelectric conversion efficiency of the solar laminated cell 10 is effectively ensured.

Specifically, the thickness of the organic light absorbing layer 113 may be 80nm, 90nm, 100nm, 110nm, and 120nm, or the thickness of the organic light absorbing layer 113 may be any value within a range of values defined by any two values described above.

When the thickness of the organic light absorption layer 113 is less than 80nm, the organic light absorption layer 113 is too thin to cause poor light absorption effect, so that the current generated by the solar laminate cell 10 is small; when the thickness of the organic light absorbing layer 113 is greater than 120nm, it is difficult to diffuse the radicals to the first or second transport layer 112 or 114 after splitting due to the short diffusion length of the radicals.

Example III

In some embodiments, the organic light absorbing layer 113 includes a donor and a acceptor, the donor being made of a P-type material, the P-type material being one of PM6, PM7, PTB7-TH, D18; the receptor is made of N-type material, and the N-type material is one of IEICO-4F, IT-4F, Y6, Y7 and ITIC.

Therefore, the proper P-type and N-type materials are selected, so that the effect of absorbing and transmitting light by the donor and the receptor is proper, the light can be absorbed to generate current, and the overall photoelectric conversion efficiency is improved.

Wherein, the energy level range of HOMO (highest occupied molecular orbital) -LUMO (lowest unoccupied molecular orbital) of the P-type material is-3 to-6 ev. The HOMO (highest occupied molecular orbital) -LUMO (lowest unoccupied molecular orbital) energy level range of the N-type material is-3.5 to-6.5 ev.

Example IV

In some embodiments, the thickness of both the first and second transport layers 112, 114 may be 30nm to 50nm. In this way, the thicknesses of the first transmission layer 112 and the second transmission layer 114 are in a proper range, and the effect of transmitting carriers is better. Specifically, the thickness of the first transmission layer 112 and the second transmission layer 114 may be 30nm, 35nm, 40nm, 45nm, 50nm, or any value within a range defined by any two values, which is not limited herein.

In some alternative embodiments, when the third transport layer 151 serves as an electron transport layer, the thickness of the third transport layer 151 may be 10nm to 50nm. In this way, the thickness of the third transport layer 151 is in a proper range, and the effect of transporting carriers is better. The thickness of the third transmission layer 151 may be 10nm, 15nm, 20nm, 25nm, 30nm, 35nm, 40nm, 45nm, 50nm, or any value within a range defined by any two values, which is not limited herein.

When the fourth transport layer 153 is used as a hole transport layer, the thickness of the fourth transport layer 153 is 5nm to 50nm. In this way, the thickness of the fourth transport layer 153 is in a proper range, and the effect of transporting carriers is better. The thickness of the fourth transmission layer 153 may be 5nm, 15nm, 25nm, 35nm, 45nm, 50nm, or any value within a range defined by any two values, which is not limited herein.

Note that when the third transport layer 151 is a hole transport layer, the thickness of the third transport layer 151 is 5nm to 50nm. The method comprises the steps of carrying out a first treatment on the surface of the When the fourth transport layer 153 is used as an electron transport layer, the thickness of the fourth transport layer 153 may be 10nm to 50nm.

Specifically, the thicknesses of the first, second, third, and fourth transmission layers 112, 114, 151, and 153 may all be the same, and the thicknesses of the first, second, third, and fourth transmission layers 112, 114, 151, and 153 may also all be different; it is also possible that part of the film layers in the first, second, third and fourth transfer layers 112, 114, 151 and 153 are the same and the remaining film layers are different in thickness. The thickness relationship of the first, second, third, and fourth transfer layers 112, 114, 151, and 153 is not limited here.

Example five

In some embodiments, the first transport layer 112 is PEDOT: PSS layer, niO _X Layer, moO ₃ At least one of layer and CuSCN layer. Thus, when the first transport layer 112 is used as a hole transport layer, a suitable material may make the first transport layer 112 suitable for transporting holes and blocking electrons with good effect. Meanwhile, the first transmission layer 112 can be well matched with the first electrode 111 and the organic light absorption layer 113, which is beneficial to improving the photoelectric conversion efficiency of the solar laminated cell 10.

Example six

In some embodiments, the second transport layer 114 is a ZnO layer or SnO ₂ At least one of the layers. Thus, when the second transport layer 114 is used as an electron transport layer, the second transport layer 114 is suitable for transporting electrons, and has a good hole blocking effect, which is beneficial to improving the overall photoelectric conversion efficiency.

In some alternative embodiments, when the first transport layer 112 is an electron transport layer and the second transport layer 114 is a hole transport layer, the first transport layer 112 may be a ZnO layer or SnO ₂ At least one of the layers, the second transmission layer 114 may be PEDOT: PSS layer, niO _X Layer, moO ₃ At least one of layer and CuSCN layer.

Example seven

In some embodiments, the third transport layer 151 is SnO ₂ Layer, tiO ₂ Layer, znSnO ₄ At least one of the layers. Thus, when the third transport layer 151 is used as an electron transport layer, the third transport layer 151 is made of a suitable material to transport electrons, so that the effect of blocking holes is good, and the overall photoelectric conversion efficiency is improved.

Example eight

In some embodiments, the fourth transport layer 153 is PEDOT: at least one of PSS layer, spiro-oMeTad layer, niOx layer and CuSCN layer. Thus, when the fourth transport layer 153 is used as a hole transport layer, a suitable material may make the fourth transport layer 153 suitable for transporting holes and has a good effect of blocking electrons. Meanwhile, the fourth transmission layer 153 is better matched with the second electrode 154 and the perovskite light absorption layer 152, so that the photoelectric conversion efficiency of the solar laminated cell 10 is improved.

In some alternative embodiments, when the third transport layer 151 serves as a hole transport layer and the fourth transport layer 153 serves as an electron transport layer, the third transport layer 151 may be PEDOT: at least one of PSS layer, spiro-oMeTad layer, niOx layer, and CuSCN layer, and the fourth transmission layer 153 may be SnO ₂ Layer, tiO ₂ Layer, znSnO ₄ At least one of the layers.

Example nine

Referring to fig. 3, in some embodiments, the crystalline silicon cell 13 may include a first passivation layer 131, a second passivation layer 132, a first polysilicon layer 133, a first tunneling layer 134, a crystalline silicon layer 135, a second tunneling layer 136, a second polysilicon layer 137, a third passivation layer 138, and a fourth passivation layer 139 that are sequentially stacked, and the first passivation layer 131 is connected with the first composite layer 12.

Thus, the crystalline silicon cell 13 and the perovskite cell 15 can absorb outdoor light, so that the light utilization rate of the solar laminated cell 100 is greatly improved, and the photoelectric conversion efficiency of a building unit area is improved.

Specifically, the first passivation layer 131 and the fourth passivation layer 139 may be made of silicon nitride (SiNX) material, and the thicknesses of the first passivation layer 131 and the fourth passivation layer 139 may beAnd are all 10nm to 30nm, and the fourth passivation layer 139 is connected to the second composite layer 14. The second passivation layer 132 and the third passivation layer 138 may be made of aluminum oxide (Al ₂ O ₃ ) The thickness of the second passivation layer 132 and the third passivation layer 138 may be 2nm to 5nm. The first tunneling layer 134 and the second tunneling layer 136 may be silicon oxide (SiO _X ) The thickness of the first tunneling layer 134 and the second tunneling layer 136 is 0.5 nm-2 nm.

The crystalline silicon layer 135 may be a p-type crystalline silicon wafer or an n-type crystalline silicon wafer, and the thickness of the silicon wafer is 120 μm to 250 μm. The thickness of the first polysilicon layer 133 and the second polysilicon layer 137 may be 50nm to 200nm, wherein the first polysilicon layer 133 may be an n-type polysilicon wafer and the second polysilicon layer may be a p-type polysilicon wafer.

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 utility model. 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.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The solar laminated battery is characterized by comprising an organic battery, a first composite layer, a crystalline silicon battery, a second composite layer and a perovskite battery which are sequentially laminated;

the organic battery comprises a first electrode, a first transmission layer, an organic light absorption layer and a second transmission layer which are sequentially stacked, wherein the second transmission layer is positioned between the organic light absorption layer and the first composite layer;

the perovskite battery comprises a third transmission layer, a perovskite light absorption layer, a fourth transmission layer and a second electrode which are sequentially stacked, wherein the third transmission layer is positioned between the second composite layer and the perovskite light absorption layer.

2. The solar cell according to claim 1, wherein the thickness of the organic light absorbing layer is 80nm to 120nm.

3. The solar cell of claim 1, wherein the organic light absorbing layer comprises a donor and a acceptor, the donor being made of a P-type material, the P-type material being one of PM6, PM7, PTB7-TH, D18; the receptor is prepared from an N-type material, wherein the N-type material is one of IEICO-4F, IT-4F, Y6, Y7 and ITIC.

4. The solar cell of claim 1, wherein the thickness of the first and second transport layers is between 30nm and 50nm.

5. The solar laminate cell according to claim 1, wherein the first transport layer is PEDOT: PSS layer, niO _X Layer, moO ₃ At least one of layer and CuSCN layer.

6. The solar laminate cell according to claim 1, wherein the second transport layer is a ZnO layer or SnO ₂ At least one of the layers.

7. The solar cell of claim 1, wherein the third transport layer is SnO ₂ Layer, tiO ₂ Layer, znSnO ₄ At least one of the layers.

8. The solar laminate cell according to claim 1, wherein the fourth transport layer is PEDOT: PSS layer,Spiro-oMeTad layer, niO _X At least one of layer and CuSCN layer.

9. The solar cell of claim 1, wherein the crystalline silicon cell comprises a first passivation layer, a second passivation layer, a first polysilicon layer, a first tunneling layer, a crystalline silicon layer, a second tunneling layer, a second polysilicon layer, a third passivation layer, and a fourth passivation layer that are stacked in sequence, the first passivation layer being connected to the first composite layer.

10. A cell assembly comprising a solar laminate cell according to any one of claims 1 to 9.

11. A photovoltaic system comprising the cell assembly of claim 10.