CN115802776A - Full perovskite laminated solar cell based on double-sided ITO glass and preparation method - Google Patents
Full perovskite laminated solar cell based on double-sided ITO glass and preparation method Download PDFInfo
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Abstract
The application provides a full perovskite laminated solar cell based on double-sided ITO glass and a preparation method thereof, wherein the method adopts double-sided indium tin oxide glass as a substrate; depositing a first charge transport layer on two sides of the double-sided indium tin oxide glass respectively; depositing a narrow-bandgap perovskite on one side and depositing a wide-bandgap perovskite on the other side in the first charge transport layers on the two sides; respectively depositing corresponding second charge transport layers on the narrow-bandgap perovskite side and the wide-bandgap perovskite side; and depositing electrodes on the second charge transport layers on two sides to obtain the double-sided ITO glass-based all-perovskite laminated solar cell. Under the condition of ensuring the performance of the all-perovskite laminated solar cell, the all-perovskite laminated solar cell with two integrated ends and four integrated ends is obtained.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to a double-sided ITO glass-based all-perovskite laminated solar cell and a preparation method thereof.
Background
Perovskite is widely applied to the preparation of solar cells as a material with the advantages of both organic components and inorganic components. In the preparation of the solar cell, the reserves of perovskite raw materials are abundant, the perovskite materials with the band gap of 1.2eV to 2.5eV can be obtained through component regulation, the perovskite sub-cells with two different band gaps (wide band gap and narrow band gap) are combined to prepare the all-perovskite tandem solar cell, and the all-perovskite tandem solar cell can be prepared by a solution method at low cost, so that the all-perovskite tandem solar cell has great commercialization potential. Two common traditional all-perovskite tandem solar cells are provided, one is an all-perovskite tandem solar cell with two ends, and the other is an all-perovskite tandem solar cell with four ends.
In the prior art, a full perovskite tandem solar cell with two ends is formed by respectively depositing a wide-bandgap perovskite top sub-cell and a narrow-bandgap perovskite bottom sub-cell on a single-sided Indium Tin Oxide (ITO) glass substrate, and the two sub-cells are connected together through a middle connecting layer to form the full perovskite tandem solar cell with two integrated ends; the four-end all-perovskite laminated solar cell is formed by respectively depositing a wide-bandgap perovskite top sub-cell and a narrow-bandgap perovskite bottom sub-cell on two single-sided ITO glass substrates, and is of an integrated structure with four ends. In the preparation of the all-perovskite tandem solar cell at two ends, an intermediate connecting layer with a complex structure needs to be prepared, and the quality of the intermediate connecting layer can influence the performance of the whole all-perovskite tandem solar cell; in the preparation of the four-terminal all-perovskite laminated solar cell, although an intermediate connecting layer is not needed, two sub-cells need to be deposited on two substrates respectively, so that one four-terminal all-perovskite laminated solar cell needs two substrates. Therefore, both the two-end all-perovskite laminated solar cell and the four-end all-perovskite laminated solar cell have disadvantages in preparation.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide an all-perovskite tandem solar cell based on double-sided ITO glass and a preparation method thereof, so as to solve the technical problems that, under the condition of ensuring the performance of the all-perovskite tandem solar cell, the existing all-perovskite tandem solar cell can only obtain an all-perovskite tandem solar cell with one structure (two ends or four ends) during the preparation, and the all-perovskite tandem solar cell with two ends needs to prepare an intermediate connection layer with a complicated structure, and two sub-cells of the all-perovskite tandem solar cell with four ends need to be deposited on two substrates respectively.
In order to solve the problems, the invention provides a preparation method of a double-sided ITO glass-based all-perovskite tandem solar cell, which comprises the following steps:
adopting double-sided indium tin oxide glass as a substrate;
respectively depositing a first charge transport layer on two sides of the double-sided indium tin oxide glass;
depositing a narrow-bandgap perovskite on one side and depositing a wide-bandgap perovskite on the other side of the first charge transport layer on both sides;
respectively depositing corresponding second charge transport layers on the narrow-bandgap perovskite side and the wide-bandgap perovskite side;
and depositing electrodes on the second charge transport layers on two sides to obtain the double-sided ITO glass-based all-perovskite laminated solar cell.
In an embodiment of the present invention, the obtained double-sided ITO glass-based all-perovskite tandem solar cell includes:
the double-sided indium tin oxide glass is used as a boundary and divided into two sub-batteries, wherein the two sub-batteries are a top wide-band-gap sub-battery and a bottom narrow-band-gap sub-battery.
In one embodiment of the present invention, the charge transport layer is divided into a hole transport layer and an electron transport layer:
when the first charge transport layer of any one of the top wide bandgap subcell and the bottom narrow bandgap subcell is a hole transport layer, the corresponding second charge transport layer is an electron transport layer;
when the first charge transport layer of any one of the top wide bandgap subcell and the bottom narrow bandgap subcell is an electron transport layer, the corresponding second charge transport layer is a hole transport layer.
In an embodiment of the present invention, the method further includes:
connecting the positive output end of the top wide bandgap subcell with the negative output end of the bottom narrow bandgap subcell;
and taking the negative output end of the top wide band gap sub-battery as the negative electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, and taking the positive output end of the bottom narrow band gap sub-battery as the positive electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, so as to obtain the double-sided ITO glass all-perovskite laminated solar battery at two ends.
In an embodiment of the present invention, the method further includes:
connecting the negative output end of the top wide bandgap subcell with the positive output end of the bottom narrow bandgap subcell;
and taking the positive electrode output end of the top wide band gap sub-battery as the positive electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, and taking the negative electrode output end of the bottom narrow band gap sub-battery as the negative electrode of the double-sided ITO glass-based all-perovskite laminated solar battery to obtain the double-sided ITO glass all-perovskite laminated solar battery at two ends.
In an embodiment of the present invention, the method further includes:
independently outputting the positive electrode output end and the negative electrode output end of the top wide band gap sub-battery to the outside;
independently outputting the output ends of the anode and the cathode of the bottom narrow-band-gap sub-battery to the outside;
and obtaining the four-end double-sided ITO glass all-perovskite laminated solar cell through the top wide band gap sub-cell and the bottom narrow band gap sub-cell which are respectively and independently output outwards.
The invention also provides a double-sided ITO glass-based all-perovskite laminated solar cell, which comprises the following components in percentage by weight:
the substrate is double-sided indium tin oxide glass, and a hole transmission layer, a perovskite active layer, an electron transmission layer and an electrode are respectively deposited on two sides of the double-sided indium tin oxide glass;
a hole transport layer comprising two hole transport layer materials, poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonic acid) and poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ];
a perovskite active layer comprising a narrow bandgap perovskite and a wide bandgap perovskite;
the electron transport layer comprises a C60 electron transport layer and a BCP buffer layer;
and the electrodes comprise transparent electrodes deposited on the light incidence side of the top and metal electrodes deposited on the bottom.
In an embodiment of the invention, the double-sided ITO glass-based all-perovskite stacked solar cell includes a top wide bandgap sub-cell and a bottom narrow bandgap sub-cell, and the top wide bandgap sub-cell is connected to the bottom narrow bandgap sub-cell to form a double-sided ITO glass all-perovskite stacked solar cell with two ends.
In an embodiment of the invention, the double-sided ITO glass-based all-perovskite stacked solar cell includes a top wide bandgap sub-cell and a bottom narrow bandgap sub-cell, and the top wide bandgap sub-cell and the bottom narrow bandgap sub-cell are respectively output to the outside to form a four-terminal double-sided ITO glass all-perovskite stacked solar cell.
As described above, the all-perovskite tandem solar cell based on double-sided ITO glass and the preparation method thereof provided by the embodiment of the present invention have the following beneficial effects:
according to the method, double-sided indium tin oxide glass is used as a substrate, first charge transmission layers are respectively deposited on two sides of the double-sided indium tin oxide glass, then narrow-bandgap perovskite is deposited on one side of the first charge transmission layers on the two sides, wide-bandgap perovskite is deposited on the other side of the first charge transmission layers on the two sides, corresponding second charge transmission layers are respectively deposited on the narrow-bandgap perovskite side and the wide-bandgap perovskite side, and finally electrodes are deposited on the second charge transmission layers on the two sides, so that the double-sided ITO glass-based all-perovskite laminated solar cell is obtained. Under the condition of ensuring the performance of the all-perovskite laminated solar cell, the all-perovskite laminated solar cell with the brand-new structure and integrated two ends and four ends is obtained, so that the all-perovskite laminated solar cell based on the double-sided ITO glass does not need to prepare an intermediate connecting layer with a more complex structure when being used as the two-end perovskite laminated solar cell, and only one substrate is needed when being used as the four-end perovskite laminated solar cell.
Drawings
Fig. 1 is a structural diagram of a two-terminal all-perovskite tandem solar cell in the related art shown in an exemplary embodiment of the present application;
fig. 2 is a block diagram of a four-terminal all-perovskite tandem solar cell in the related art according to an exemplary embodiment of the present application;
fig. 3 is a flow chart illustrating a method of fabricating a double-sided ITO glass based all-perovskite tandem solar cell according to an exemplary embodiment of the present application;
FIG. 4 is a flow chart illustrating a specific method of fabricating a double-sided ITO glass based all-perovskite tandem solar cell according to an exemplary embodiment of the present application;
FIG. 5 is a block diagram of a double-sided ITO glass based all perovskite tandem solar cell shown in an exemplary embodiment of the present application;
FIG. 6 is a block diagram of a two-sided double-sided ITO glass all perovskite tandem solar cell according to an exemplary embodiment of the present application;
FIG. 7 is an efficiency graph of a two-sided double-sided ITO glass all perovskite tandem solar cell shown in an exemplary embodiment of the present application;
FIG. 8 is a block diagram of a four-terminal double-sided ITO glass all perovskite tandem solar cell according to an exemplary embodiment of the present application;
fig. 9 is a graph of the efficiency of a four-terminal double-sided ITO glass all perovskite tandem solar cell, as shown in an exemplary embodiment of the present application.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
In a conventional all-perovskite tandem solar cell, there are two-terminal all-perovskite tandem solar cells and four-terminal all-perovskite tandem solar cells. Referring to fig. 1, fig. 1 is a structural diagram of a two-terminal all-perovskite tandem solar cell in the related art according to an exemplary embodiment of the present disclosure, and as shown in fig. 1, the two-terminal all-perovskite tandem solar cell is an all-perovskite tandem solar cell in which a top Wide bandgap (Wide Eg) sub-cell and a bottom narrow bandgap (Low Eg) sub-cell are respectively deposited on a single-sided ITO glass substrate, and the two sub-cells are connected together through an intermediate connection layer to form an all-perovskite tandem solar cell in which two terminals are integrated into a single structure, but during a preparation process of the intermediate connection layer, the structure of the intermediate connection layer is complex, and the quality of the intermediate connection layer can affect the performance of the entire all-perovskite tandem solar cell; referring to fig. 2, fig. 2 is a structural diagram of a four-terminal all-perovskite laminated solar cell in the related art according to an exemplary embodiment of the present disclosure, and as shown in fig. 2, the four-terminal all-perovskite laminated solar cell is an all-perovskite laminated solar cell in which a top wide band gap sub-cell and a top narrow band gap sub-cell are respectively deposited on two single-sided ITO glass substrates, and the two sub-cells are respectively output to the outside to form an all-perovskite laminated solar cell in a four-terminal integrated structure, where the two sub-cells are respectively deposited on the two single-sided ITO glass substrates, so that two single-sided ITO glass substrates are required for one four-terminal all-perovskite laminated solar cell.
From this, the embodiment of this application provides a full perovskite tandem solar cell and preparation method based on two-sided ITO glass respectively, do the substrate through adopting two-sided ITO glass, all respectively sedimentary hole transmission layer, perovskite active layer, electron transmission layer and electrode in both sides, form top wide band gap sub-battery and bottom narrow band gap sub-battery, then connect through the wire and prepare both ends, four-terminal integrated full perovskite tandem solar cell, wherein, when as the full perovskite tandem solar cell of both ends, need not prepare the intermediate junction layer that the structure is complicated, when as four-terminal full perovskite tandem solar cell, do not need two ITO glass to make the substrate, and can realize the full perovskite tandem solar cell of two kinds of structures, the preparation drawback of two kinds of traditional full perovskite tandem solar cell has been avoided simultaneously.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for manufacturing a double-sided ITO glass-based all-perovskite tandem solar cell according to an exemplary embodiment of the present disclosure, as shown in fig. 3, in an exemplary embodiment, the method for manufacturing a double-sided ITO glass-based all-perovskite tandem solar cell at least includes steps S301 to S305, which are described in detail as follows:
step S301, double-sided indium tin oxide glass is used as a substrate.
Indium Tin Oxide (ITO) glass is formed by plating a layer of conductive film of indium tin oxide on one surface of glass, has good conductivity and high transparency, and double-sided ITO glass is formed by plating a layer of conductive film of indium tin oxide on the surfaces of two sides of the glass.
Step S302, depositing first charge transport layers on two sides of the double-sided ITO glass respectively.
The charge transport layer can be divided into an Electron Transport Layer (ETL) and a Hole Transport Layer (HTL) from the viewpoint of carriers, which selectively transport electrons and holes, respectively, to the electrodes, and can directly affect the short-circuit current (Jsc), the open-circuit voltage (Voc), and the Fill Factor (FF).
Step S303, depositing a narrow-bandgap perovskite on one side and depositing a wide-bandgap perovskite on the other side in the first charge transport layers on the two sides.
The wide band gap perovskite is used for absorbing photons with higher energy, and the top sub wide band gap perovskite not only can generate higher voltage, but also can reduce thermalization loss brought by high-energy electron relaxation. The narrow-band-gap perovskite is used for absorbing photons with lower energy, and the bottom narrow-band-gap perovskite improves the photon utilization rate by increasing the spectrum absorption range. In the preparation process of the perovskite laminated solar cell based on the double-sided ITO glass, annealing treatment is carried out on the perovskite with the narrow band gap and the perovskite with the wide band gap to obtain a perovskite active layer, namely a light absorption layer, which is composed of perovskite materials and used for light absorption, the layer is the core position of the whole cell structure, and the quality of the formed film directly determines the performance of a solar cell device. Annealing treatment is carried out on the narrow-band gap perovskite and the wide-band gap perovskite, the morphology and the crystallization quality of the perovskite active layer are regulated and controlled through annealing, and the obtained perovskite active layer has high photoelectric conversion efficiency.
And S304, respectively depositing corresponding second charge transport layers on the narrow-bandgap perovskite side and the wide-bandgap perovskite side.
And S305, depositing electrodes on the second charge transport layers on the two sides to obtain the double-sided ITO glass-based all-perovskite laminated solar cell.
The electrodes (electrodes) of the all-perovskite cell are typically formed of an Indium Tin Oxide (ITO) transparent Electrode on the top light-incident side and a bottom metal Electrode, so finally an indium tin oxide transparent Electrode is deposited on the top electron transport layer and a metal Electrode is deposited on the bottom electron transport layer to obtain a double-sided ITO glass based all-perovskite tandem solar cell.
In one embodiment, the obtained double-sided ITO glass based all-perovskite tandem solar cell comprises:
the double-sided indium tin oxide glass is used as a boundary to be divided into two sub-batteries, wherein the two sub-batteries are a top wide-band-gap sub-battery and a bottom narrow-band-gap sub-battery.
The full perovskite tandem solar cell is composed of a top wide band gap perovskite sub-cell and a bottom narrow band gap perovskite sub-cell, and a hole transmission layer, an electron transmission layer and electrodes are respectively deposited on two sides of double-sided ITO glass by adopting the double-sided ITO glass as a substrate in the full perovskite tandem solar cell based on the double-sided ITO glass to form the two sub-cells of the top wide band gap sub-cell and the bottom narrow band gap sub-cell.
In one embodiment, the charge transport layer is divided into a hole transport layer and an electron transport layer:
when the first charge transport layer of any one of the top wide-bandgap subcell and the bottom narrow-bandgap subcell is a hole transport layer, the corresponding second charge transport layer is an electron transport layer;
when the first charge transport layer of either of the top wide bandgap subcell and the bottom narrow bandgap subcell is an electron transport layer, its corresponding second charge transport layer is a hole transport layer.
The hole transport layer is used as an important component of the perovskite solar cell and mainly used for collecting and transporting holes and realizing effective separation of electrons and holes. The electron transport layer plays a role in transporting electrons and blocking holes in the all-perovskite laminated solar cell. In two sub-cells, namely a top wide-bandgap sub-cell and a bottom narrow-bandgap sub-cell, when a first charge transport layer of any one sub-cell of the top wide-bandgap sub-cell and the bottom narrow-bandgap sub-cell is a hole transport layer, a second charge transport layer corresponding to the first charge transport layer is an electron transport layer; when the first charge transport layer of any one of the top wide bandgap subcell and the bottom narrow bandgap subcell is an electron transport layer, the corresponding second charge transport layer is a hole transport layer. I.e. two charge transport layers deposited in two subcells, one hole transport layer and one electron transport layer, it should be understood that the order of depositing the hole transport layer and the cell transport layer is not limiting for the two subcells.
The hole transport layer may employ two hole transport materials, poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonic acid) (PEDOT: PSS) and poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ] (PTAA), wherein the ratio of PEDOT: PSS is a high molecular polymer, has the characteristics of high conductivity and adjustable conductivity, is composed of PEDOT and PSS, is a hole transport material with better performance due to the characteristics of conductivity, transparency, ductility and easy processing, is introduced into perovskite solar energy as a hole transport layer as a polymeric hole transport material, not only has more matched energy level and higher transport performance, but also can improve the long-term stability of the battery, and the ratio of PEDOT: PSS and PATT are deposited on two sides of double-sided ITO glass, and a hole transport layer formed after annealing treatment can improve the performance of the all-perovskite laminated battery, and the hole transport layer is understood to comprise but not limited to two hole transport materials of poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonic acid) (PEDOT: PSS) and poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ] (PTAA), and other hole transport materials can also be used.
The electron transport layer comprises a C60 electron transport layer and a BCP (Bathocuprine) buffer layer, wherein the BCP buffer layer is used for separating the C60 electron transport layer from the electrode, so that damage to the C60 electron transport layer is reduced. It should be understood that electron transport layers include, but are not limited to, the use of C60, as other electron transport layer materials are possible.
Referring to fig. 4, fig. 4 is a flow chart illustrating a specific method for manufacturing a double-sided ITO glass-based all-perovskite tandem solar cell according to an exemplary embodiment of the present application. As shown in fig. 4, the double-sided ITO glass-based all-perovskite laminated solar cell is obtained by using double-sided ITO glass as a substrate, depositing poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonic acid) and poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ] on both sides of the double-sided ITO glass, respectively, annealing to obtain a hole transport layer, then depositing a narrow-bandgap perovskite on the poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonic acid) side, depositing a wide-bandgap perovskite on the poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ] side, annealing to obtain a perovskite active layer, depositing an electron transport layer C60 and a BCP buffer layer on the narrow-bandgap perovskite side and the wide-bandgap perovskite side, respectively, and finally depositing electrodes on the electron transport layers on both sides.
Referring to fig. 5, fig. 5 is a structural diagram of a double-sided ITO glass based all-perovskite tandem solar cell according to an exemplary embodiment of the present application. As shown in fig. 5: (1) is a substrate of double-sided ITO glass; (2) is a hole transport layer; (3) is a wide band gap perovskite active layer; (4) is a narrow bandgap perovskite active layer; (5) is an electron transport layer; (6) is a transparent ITO electrode; (7) is a metal electrode.
In an embodiment, the method further comprises:
connecting the positive electrode output end of the top wide band gap sub-battery with the negative electrode output end of the bottom narrow band gap sub-battery;
and taking the negative electrode output end of the top wide band gap sub-battery as the negative electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, and taking the positive electrode output end of the bottom narrow band gap sub-battery as the positive electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, so as to obtain the double-sided ITO glass all-perovskite laminated solar battery at two ends.
In an embodiment, the method further comprises:
connecting the negative output end of the top wide band gap sub-battery with the positive output end of the bottom narrow band gap sub-battery;
and taking the positive electrode output end of the top wide band gap sub-battery as the positive electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, and taking the negative electrode output end of the bottom narrow band gap sub-battery as the negative electrode of the double-sided ITO glass-based all-perovskite laminated solar battery to obtain the double-sided ITO glass all-perovskite laminated solar battery at two ends.
Taking the example of connecting the negative output terminal of the top wide bandgap subcell with the positive output terminal of the bottom narrow bandgap subcell as an example, please refer to fig. 6, and fig. 6 is a structural diagram of a double-sided ITO glass all-perovskite tandem solar cell shown in an exemplary embodiment of the present application. As shown in fig. 6, the top ITO transparent electrode at the negative output end of the top wide band gap sub-cell is connected to the positive output end of the bottom narrow band gap sub-cell, that is, the ITO electrode at the lower side of the double-sided ITO glass substrate, and then the positive output end of the top wide band gap sub-cell, that is, the ITO electrode at the upper side of the double-sided ITO glass substrate and the negative output end metal Ag electrode of the bottom narrow band gap sub-cell are respectively used as the positive electrode and the negative electrode of the double-sided ITO glass-based all perovskite laminated solar cell, thereby forming a double-sided ITO glass all perovskite laminated solar cell with two ends.
Referring to fig. 7, fig. 7 is a graph illustrating the efficiency of a double-sided ITO glass all-perovskite tandem solar cell according to an exemplary embodiment of the present application. As shown in FIG. 7, V OC Represents an open circuit voltage of 1.98V; j. the design is a square SC Representing a short-circuit current of 13.12mA/cm 2 (ii) a FF (%) represents a fill factor, 81.5%; PCE (%) indicates photoelectric conversion efficiency. Wherein FCE = V OC ×J SC And the multiplied by FF, so that the photoelectric conversion efficiency of the double-sided ITO glass all-perovskite laminated solar cell at two ends is 21.17%.
In an embodiment, the method further comprises:
independently outputting the positive electrode output end and the negative electrode output end of the top wide band gap sub-battery to the outside;
independently outputting the output ends of the anode and the cathode of the bottom narrow-band-gap sub-battery to the outside;
the four-end double-sided ITO glass all-perovskite laminated solar cell is obtained through a top wide-band-gap sub cell and a bottom narrow-band-gap sub cell which are respectively and independently output outwards.
Referring to fig. 8, fig. 8 is a structural diagram of a four-terminal double-sided ITO glass all-perovskite tandem solar cell according to an exemplary embodiment of the present application. As shown in fig. 8, in the top wide band gap sub-cell, the negative output end of the top wide band gap sub-cell, the top ITO transparent electrode, the ITO electrode on the upper side of the double-sided ITO glass substrate, is used as the negative electrode, in the bottom narrow band gap sub-cell, the ITO electrode on the lower side of the double-sided ITO glass substrate is used as the positive electrode, the negative output end metal Ag electrode is used as the negative electrode, and the top wide band gap sub-cell and the bottom narrow band gap sub-cell are respectively output to the outside, thereby forming the four-terminal double-sided ITO glass all-perovskite laminated solar cell.
Referring to fig. 9, fig. 9 is a graph illustrating the efficiency of a four-terminal double-sided ITO glass all-perovskite tandem solar cell according to an exemplary embodiment of the present application. As shown in fig. 9, V as shown in fig. 9 OC Represents an open circuit voltage; j. the design is a square SC Represents a short circuit current; FF (%) denotes fill factor; PCE (%) indicates photoelectric conversion efficiency. In the top wide band gap sub-cell, V OC Is 1.18V, J SC Is 15.56mA/cm 2 FF is 73.1%, so the photoelectric conversion efficiency FCE = V OC ×J SC XFF, 13.42%; in the bottom narrow bandgap subcell, V OC 0.81V, J SC Is 13.16mA/cm 2 And FF is 76.3%, so that the photoelectric conversion efficiency FCE = V OC ×J OC XFF, 8.13%. Finally, the photoelectric conversion efficiency of the four-end double-sided ITO glass all-perovskite laminated solar cell is the sum of the photoelectric conversion efficiency of the top wide-bandgap sub-cell and the photoelectric conversion efficiency of the bottom narrow-bandgap sub-cell, and is 21.55%.
Through the full perovskite tandem solar cell's of the two-sided ITO glass in both ends photoelectric conversion efficiency and the full perovskite tandem solar cell's of four-terminal two-sided ITO glass photoelectric conversion efficiency, the full perovskite tandem solar cell based on two-sided ITO glass that this scheme provided can be under the condition of guaranteeing full perovskite tandem solar cell performance, can only obtain the full perovskite tandem solar cell of a structure (both ends or four ends) when having solved current full perovskite tandem solar cell preparation, and the full perovskite tandem solar cell of both ends structure need prepare the more complicated intermediate junction layer of structure, four terminal structure full perovskite tandem solar cell's two sub-batteries need deposit respectively on two substrates technical problem.
The embodiment of the application also provides a full perovskite tandem solar cell based on two-sided ITO glass, and this full perovskite tandem solar cell based on two-sided ITO glass includes:
the substrate is double-sided indium tin oxide glass, and a hole transmission layer perovskite active layer, an electron transmission layer and an electrode are respectively deposited on two sides of the double-sided indium tin oxide glass;
a hole transport layer, wherein the hole transport layer comprises two hole transport layer materials of poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonic acid) and poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ];
a perovskite active layer comprising a narrow bandgap perovskite and a wide bandgap perovskite;
the electron transport layer comprises a C60 electron transport layer and a BCP buffer layer;
electrodes, including a transparent electrode deposited on the light-in side of the top, and a metal electrode deposited on the bottom.
In one embodiment, the double-sided ITO glass based all-perovskite tandem solar cell comprises a top wide bandgap subcell and a bottom narrow bandgap subcell, the top wide bandgap subcell being connected to the bottom narrow bandgap subcell to form a two-sided ITO glass all-perovskite tandem solar cell.
In one embodiment, the double-sided ITO glass-based all-perovskite laminated solar cell comprises a top wide-bandgap subcell and a bottom narrow-bandgap subcell, which are respectively output externally to form a four-terminal double-sided ITO glass all-perovskite laminated solar cell.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (9)
1. A preparation method of a double-sided ITO glass-based all-perovskite laminated solar cell is characterized by comprising the following steps:
adopting double-sided indium tin oxide glass as a substrate;
depositing a first charge transport layer on two sides of the double-sided indium tin oxide glass respectively;
depositing a narrow-bandgap perovskite on one side and a wide-bandgap perovskite on the other side of the first charge transport layers on the two sides;
respectively depositing corresponding second charge transport layers on the narrow-bandgap perovskite side and the wide-bandgap perovskite side;
and depositing electrodes on the second charge transport layers on two sides to obtain the double-sided ITO glass-based all-perovskite laminated solar cell.
2. The method for preparing a double-sided ITO glass based all-perovskite tandem solar cell according to claim 1, wherein the obtained double-sided ITO glass based all-perovskite tandem solar cell comprises:
the double-sided indium tin oxide glass is used as a boundary and divided into two sub-batteries, wherein the two sub-batteries are a top wide-band-gap sub-battery and a bottom narrow-band-gap sub-battery.
3. The method for preparing a double-sided ITO glass-based all-perovskite tandem solar cell according to claim 2, wherein the charge transport layer is divided into a hole transport layer and an electron transport layer:
when the first charge transport layer of any one of the top wide bandgap subcell and the bottom narrow bandgap subcell is a hole transport layer, the corresponding second charge transport layer is an electron transport layer;
when the first charge transport layer of either of the top wide bandgap subcell and the bottom narrow bandgap subcell is an electron transport layer, the corresponding second charge transport layer is a hole transport layer.
4. The method for preparing a double-sided ITO glass based all-perovskite tandem solar cell according to any of claims 1 to 3, further comprising:
connecting the positive output end of the top wide bandgap subcell with the negative output end of the bottom narrow bandgap subcell;
and taking the negative electrode output end of the top wide band gap sub-battery as the negative electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, and taking the positive electrode output end of the bottom narrow band gap sub-battery as the positive electrode of the double-sided ITO glass-based all-perovskite laminated solar battery to obtain the double-sided ITO glass all-perovskite laminated solar battery at two ends.
5. The method for preparing a double-sided ITO glass-based all-perovskite tandem solar cell according to any of claims 1 to 3, characterized in that it further comprises:
connecting the negative output end of the top wide bandgap subcell with the positive output end of the bottom narrow bandgap subcell;
and taking the positive output end of the top wide band gap sub-battery as the positive electrode of the double-sided ITO glass-based all-perovskite laminated solar battery, and taking the negative output end of the bottom narrow band gap sub-battery as the negative electrode of the double-sided ITO glass-based all-perovskite laminated solar battery to obtain the double-sided ITO glass all-perovskite laminated solar battery at two ends.
6. The method for preparing a double-sided ITO glass based all-perovskite tandem solar cell according to any of claims 1 to 3, further comprising:
independently outputting the positive electrode output end and the negative electrode output end of the top wide band gap sub-battery to the outside;
independently outputting the output ends of the anode and the cathode of the bottom narrow-band-gap sub-battery to the outside;
and obtaining the four-end double-sided ITO glass all-perovskite laminated solar cell through the top wide band gap sub-cell and the bottom narrow band gap sub-cell which are respectively and independently output outwards.
7. A double-sided ITO glass based all-perovskite laminated solar cell, characterized in that it comprises:
the substrate is double-sided indium tin oxide glass, and a hole transmission layer, a perovskite active layer, an electron transmission layer and an electrode are respectively deposited on two sides of the double-sided indium tin oxide glass;
a hole transport layer comprising two hole transport layer materials, poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonic acid) and poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ];
a perovskite active layer comprising a narrow bandgap perovskite and a wide bandgap perovskite;
the electron transport layer comprises a C60 electron transport layer and a BCP buffer layer;
and the electrodes comprise transparent electrodes deposited on the light incidence side of the top and metal electrodes deposited on the bottom.
8. The double-sided ITO glass-based all-perovskite tandem solar cell according to claim 7, wherein the double-sided ITO glass-based all-perovskite tandem solar cell comprises a top wide bandgap sub-cell and a bottom narrow bandgap sub-cell, the top wide bandgap sub-cell and the bottom narrow bandgap sub-cell being connected to form a two-sided ITO glass all-perovskite tandem solar cell.
9. The double-sided ITO glass-based all-perovskite tandem solar cell according to claim 7, wherein the double-sided ITO glass-based all-perovskite tandem solar cell comprises a top wide bandgap sub-cell and a bottom narrow bandgap sub-cell, the top wide bandgap sub-cell and the bottom narrow bandgap sub-cell being respectively output to the outside, forming a four-terminal double-sided ITO glass all-perovskite tandem solar cell.
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