KR101666748B1 - Perovskite photovoltaic cell module - Google Patents

Perovskite photovoltaic cell module Download PDF

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Publication number
KR101666748B1
KR101666748B1 KR1020150068619A KR20150068619A KR101666748B1 KR 101666748 B1 KR101666748 B1 KR 101666748B1 KR 1020150068619 A KR1020150068619 A KR 1020150068619A KR 20150068619 A KR20150068619 A KR 20150068619A KR 101666748 B1 KR101666748 B1 KR 101666748B1
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solar cell
layer
perovskite solar
perovskite
cell module
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KR1020150068619A
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Korean (ko)
Inventor
김동환
이해석
강윤묵
이승훈
김영도
박효민
김성탁
정태원
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고려대학교 산학협력단
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Priority to KR1020150068619A priority Critical patent/KR101666748B1/en
Priority to CN201680006331.3A priority patent/CN107210368B/en
Priority to PCT/KR2016/003378 priority patent/WO2016186317A1/en
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Publication of KR101666748B1 publication Critical patent/KR101666748B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0216—Coatings
    • H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H01L31/02168—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells the coatings being antireflective or having enhancing optical properties for the solar cells
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
    • H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The perovskite solar cell module includes a transparent substrate divided into a first cell region and a second cell region, and a transparent electrode formed on each of the first and second cell regions on the transparent substrate, wherein the transparent electrode is made of a perovskite material First and second perovskite solar cells each having an absorber layer, a metal electrode through which holes are introduced from the absorber layer, and an absorber layer, and a hole conduction layer interposed between the metal electrode and the hole to transmit holes to the metal electrode, Electrode is connected to a transparent electrode included in the second perovskite solar cell and includes a connecting portion for electrically connecting the first and second perovskite solar cells, And an insulating portion which is interposed between the absorbing layer and the connecting portion so as to suppress the movement of electrons and facilitate the movement of the holes.

Description

[0001] PEROVSKITE PHOTOVOLTAIC CELL MODULE [0002]

The present invention relates to a perovskite solar cell module, and more particularly, to a perovskite solar cell module in which solar cells including a material having a perovskite structure as an absorption layer are electrically connected to each other.

There have been many studies on the development of energy sources that can reduce environmental pollution due to depletion of existing fossil energy resources such as petroleum and coal, substitution of safe energy source as an example of Fukushima nuclear power plant accident, and global warming problem Among them, solar energy using solar light can be used indefinitely, and especially a lot of research is going on.

Photovoltaic solar cells use photovoltaic effect to convert light energy into electrical energy. Typical commercial solar cells are p-type and n-type semiconductors, Electrons and holes generated by the light irradiation with the front and rear electrodes are separated and collected in the electrode. Whereby the unit cells of the solar cell module are formed.

However, since the voltage and current generated in one solar battery cell are insignificant, a plurality of solar battery cells are connected in series or in parallel to obtain an output, and then packaged for outdoor use, and this form is called a solar battery module.

On the other hand, a solar cell including an absorption layer made of a material having a perovskite structure has excellent photoelectric conversion efficiency due to excellent charge separation and photoelectric storage characteristics as compared with conventional silicon thin film solar cells.

When manufacturing the perovskite solar cell module by electrically connecting the perovskite solar cells, the absorber layer may be patterned through a laser scribing process or a mechanical scribing process. At this time, damage or shunts in the absorption layer may occur in the structure during the scribing process. Particularly, electrons generated in the absorbing layer through contact between the metal electrode and the absorbing layer do not move to the transparent electrode but shunt phenomenon moves to the metal electrode, thereby lowering the photoelectric conversion efficiency of the perovskite solar cell module May occur.

It is an object of the present invention to provide a perovskite solar cell module capable of suppressing shunt generation and improving photoelectric conversion efficiency.

A perovskite solar cell module according to embodiments of the present invention includes a transparent substrate partitioned into a first cell region and a second cell region, and a transparent substrate formed on each of the first and second cell regions on the transparent substrate A transparent electrode, an absorption layer made of a perovskite material, a metal electrode into which holes are introduced from the absorption layer, and a hole conduction layer interposed between the absorption layer and the metal electrode, the hole conduction layer transferring the holes to the metal electrode 1 and second perovskite solar cells, wherein a metal electrode included in the first perovskite solar cell is connected to a transparent electrode included in the second perovskite solar cell, And a connection part for electrically connecting the first and second perovskite solar cells, wherein the hole conductive layer is interposed between the absorption layer and the connection part And an insulating portion for preventing movement of electrons from the absorption layer to the connection portion and facilitating movement of the holes.

In one embodiment of the present invention, each of the perovskite solar cells may further include a blocking layer interposed between the transparent electrode and the absorber layer to prevent electrons from returning to the absorber layer.

In one embodiment of the present invention, the absorption layer included in the first perovskite solar cell includes an extension electrically connected to a transparent electrode included in the second perovskite solar cell, Each of the perovskite solar cells further includes a blocking layer interposed between the transparent electrode and the absorber layer to prevent electrons from returning to the absorber layer, and the extension may be interposed between the insulating portion and the blocking layer. have.

In one embodiment of the present invention, the end of the insulating portion may be connected to the transparent substrate.

In one embodiment of the present invention, each of the perovskite solar cells further includes a shunt suppressing portion interposed between the side wall of the absorber layer and the insulating portion and inhibiting the electrons from moving from the absorber to the connecting portion .

In one embodiment of the present invention, the absorber layer may include an extension electrically connected to a transparent electrode included in an adjacent solar cell.

Here, the extension may be connected to the transparent substrate at an end thereof.

According to the embodiments of the present invention, the insulating portion included in the hole conductive layer can be restrained from moving to the connecting portion included in the metal electrode and the electron formed in the absorbing layer interposed between the absorbing layers. As a result, damage and shunt generated in the manufacture of the perovskite solar cell module can be suppressed. As a result, the efficiency of the perovskite solar cell module can be increased.

1 is a cross-sectional view illustrating a perovskite solar cell module according to an embodiment of the present invention.
2 is a cross-sectional view illustrating a perovskite solar cell module according to another embodiment of the present invention.
3 is a cross-sectional view illustrating a perovskite solar cell module according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. In the accompanying drawings, the sizes and the quantities of objects are shown enlarged or reduced from the actual size for the sake of clarity of the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprise", "comprising", and the like are intended to specify that there is a feature, step, function, element, or combination of features disclosed in the specification, Quot; or " an " or < / RTI > combinations thereof.

On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a cross-sectional view illustrating a perovskite solar cell module according to an embodiment of the present invention.

1, a solar cell module 100 according to an embodiment of the present invention includes a transparent substrate 110 and a plurality of solar cells 120 including a first solar cell 120 and a second solar cell 130 120, and 130, respectively.

The transparent substrate 110 may include a glass substrate or a polymer substrate. External sunlight can be incident through the lower surface of the transparent substrate 110. [

The transparent substrate 110 may be divided into a plurality of cell regions 111 and 112. For example, the transparent substrate may be divided into a first cell region 111 and a second cell region 112. Each of the cell regions 111 and 112 may include perovskite solar cells.

The first solar cell 120 is formed on the first cell region 111 on the transparent substrate 110. The first solar cell 120 performs photoelectric conversion using sunlight incident through the transparent substrate 110 to generate electric power.

The first solar cell 120 includes a transparent electrode 121, an absorption layer 123, a metal electrode 125, and a hole conductive layer 124.

The transparent electrode 121 is formed on the transparent substrate 110. The transparent electrode 121 may be formed of a transparent conductive oxide such as ITO, FTO, ZnO, ATO, PTO, AZO, or IZO. As the transparent electrode 121, electrons generated by the photoelectric effect in the absorption layer 123 can flow.

The absorption layer 123 is formed on the transparent electrode 121. The absorption layer 123 absorbs sunlight to form carrier pairs of electrons and holes through a photoelectric effect.

The absorption layer 123 is made of a material having a perovskite structure. For example, the absorption layer 123 may be formed of a material of titanium oxide and perovskite structure.

The metal electrode 125 is formed on the absorption layer 123. The metal electrode 125 may be formed of a metal such as Pt, Au, Ni, Cu, Ag, In, Ru, Pd, Rh,

The holes generated in the absorption layer 123 may flow through the metal electrode 125.

The metal electrode 125 is connected to a transparent electrode included in the second perovskite solar cell and includes a connection portion 125a for electrically connecting the first and second perovskite solar cells. do.

The connection unit 140 is connected to the transparent electrode 121 included in the second perovskite solar cell 130. As a result, the first and second perovskite solar cells 120 and 130 are electrically connected. That is, the connection unit 140 connects the first and second perovskite solar cells 120 and 130 in series. Thus, the perovskite solar cell module 100 including the first and second perovskite solar cells 120 and 130 is formed.

The connection part 140 may have a shape extending in a direction perpendicular to the upper surface of the transparent substrate 121. The connection part 140 is formed along the side wall of the hole conductive layer 124 included in the first perovskite solar cell 120. The connection unit 140 may be connected to the upper surface of the transparent electrode 121 included in the second perovskite solar cell 130.

The hole conductive layer 124 is interposed between the absorption layer 123 and the metal electrode 125. The hole conductive layer 124 can effectively transfer holes (holes) generated in the absorption layer 123 to the metal electrode 125.

The hole conductive layer 124 includes an insulating portion 124a interposed between the absorbing layer and the connecting portion. The insulating portion 124a may electrically isolate the absorbing layer from the connecting portion.

As a result, electrons generated in the absorption layer 123 due to the photoelectron effect move to the connection portion 125a included in the metal electrode 125, thereby suppressing the generation of a leakage current. That is, the insulation portion 124a can suppress the shunt phenomenon.

The insulating portion 124a is in direct contact with the side of the absorption layer 123a, thereby increasing the effective area through which holes (holes) can move between the hole conductive layer 124 and the absorption layer 123. [ As a result, holes generated in the absorption layer 123 can be effectively transferred to the metal electrode 125 through the hole conductive layer 124.

The hole conduction layer 124 may include a single molecule or a polymer hole transport material, but is not limited thereto. For example, spiro-MeOTAD (2,2 ', 7'-tetrakis- (N, N-di-p-methoxyphenyl-amine) -9,9'spirobifluorene) may be used as the monomolecular hole transporting material.

The hole conductive layer 124 may further include a Li-based dopant, a Co-based dopant, a Li-based dopant, and a Co-based dopant as a doping material. In addition, the hole conductive layer 124 may further include an additive such as tBP. For example, a mixture of spiro-MeOTAD, tBP, and Li-TFSI may be used as the material constituting the hole conductive layer 124. [

In one embodiment of the present invention, the first solar cell 120 may further include a blocking layer 122.

The blocking layer 122 is interposed between the transparent electrode 121 and the absorption layer 123. The electrons generated in the absorption layer 123 must move to the transparent electrode 121 but they can not move to the transparent electrode 121 and electrons can return to the absorption layer 123 again. That is, the blocking layer 122 can improve the photoelectric conversion efficiency by allowing electrons to easily move to the transparent electrode 121.

The blocking layer 122 may comprise titanium oxide. The blocking layer 120 may be formed of a material having an anatase structure. Thus, the blocking layer 122 may have excellent photocatalytic properties.

The second solar cell 130 is formed on the second cell region 112 on the transparent substrate 110. The second solar cell 130 may have substantially the same structure as the first solar cell 120.

In one embodiment of the present invention, the absorption layer 123 included in the first perovskite solar cell includes an extension part electrically connected to the transparent electrode included in the second perovskite solar cell 123a. Accordingly, the absorbent layer 123 may have a U-shape when viewed in section.

At this time, the extended portion 123a may be interposed between the insulating portion 125a and the blocking layer 122. [ As a result, the extended portion 123a included in the absorption layer 123 can suppress the generation of a leakage current due to the movement of electrons, which have migrated to the blocking layer 122, to the extended portion 123a.

2 is a cross-sectional view illustrating a perovskite solar cell module according to an embodiment of the present invention.

Referring to FIG. 2, a solar cell module 100 according to an embodiment of the present invention includes a transparent substrate 110 and solar cells 120 and 130). The solar cell module has substantially the same structure as the transparent substrate 110 and the solar cell units 120 and 130 included in the solar cell module described with reference to FIG. However, differences will be described in detail.

The end of the insulating portion 124a is connected to the transparent substrate. Further, the extension portion 123a and the end portion thereof are connected to the transparent substrate. Accordingly, the hole conductive layer 124 and the absorption layer 123 are not directly connected to the transparent electrode 121 included in the adjacent second solar cell 130, so that the shunt phenomenon can be more effectively suppressed.

3 is a cross-sectional view illustrating a perovskite solar cell module according to an embodiment of the present invention.

Referring to FIG. 3, a solar cell module 100 according to an embodiment of the present invention includes a transparent substrate 110 and solar cells 120 and 130). The solar cell module has substantially the same structure as the transparent substrate 110 and the solar cell units 120 and 130 included in the solar cell module described with reference to FIG.

Each of the solar cells included in the solar cell module 100 according to an embodiment of the present invention further includes a shunt suppression part 150 interposed between the side wall of the absorption layer 123 and the insulation part 124a .

If the thinned portion 124a has a relatively thin thickness, the insulating effect between the absorbing layer 123 and the connecting portion 125a may be deteriorated. In this case, since the shunt suppressing portion 150 is interposed between the side wall of the absorbing layer 123 and the insulating portion 124a, electrons formed in the absorbing layer 123 are prevented from directly moving to the connecting portion 140 . Thus, the shunt suppressing film 150 can suppress the leakage current that may occur in the solar cell module 100.

In the embodiments of the present invention, the perovskite solar cell module can increase the photoelectric conversion efficiency according to shunt generation.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

Claims (7)

A transparent substrate partitioned into a first cell region and a second cell region; And
A transparent electrode, an absorption layer made of a perovskite material, a metal electrode into which holes are introduced from the absorption layer, and a barrier layer formed between the absorption layer and the metal electrode, And first and second perovskite solar cells each having a hole conduction layer for transferring the holes to the metal electrode,
The metal electrode included in the first perovskite solar cell is connected to a transparent electrode included in the second perovskite solar cell, and the first and second perovskite solar cells are electrically And a connecting portion for connecting the connecting portion
Wherein the hole conduction layer includes an insulating portion interposed between the absorbing layer and the connecting portion so as to suppress the movement of electrons from the absorbing layer to the connecting portion and facilitate the movement of holes, module. 2. The solar cell according to claim 1, wherein each of the perovskite solar cells further comprises a blocking layer interposed between the transparent electrode and the absorbing layer to inhibit electrons from returning to the absorbing layer. Battery module. The solar cell module according to claim 1, wherein the absorption layer included in the first perovskite solar cell includes an extension electrically connected to a transparent electrode included in the second perovskite solar cell,
Each of the perovskite solar cells further includes a blocking layer interposed between the transparent electrode and the absorber layer to inhibit electrons from returning to the absorber layer,
Wherein the extending portion is interposed between the insulating portion and the blocking layer. The perovskite solar cell module according to claim 1, wherein the insulating portion has an end connected to the transparent substrate. The solar cell module according to claim 1, wherein each of the perovskite solar cells further includes a shunt suppression unit interposed between the side wall of the absorber layer and the insulation unit, the shunt suppression unit suppressing the movement of electrons from the absorption layer to the connection unit. Perovskite solar modules. The perovskite solar cell module according to claim 1, wherein the absorber layer includes an extension electrically connected to a transparent electrode included in an adjacent solar cell. The perovskite solar cell module according to claim 6, wherein the extension part has an end connected to the transparent substrate.
KR1020150068619A 2015-05-18 2015-05-18 Perovskite photovoltaic cell module KR101666748B1 (en)

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KR1020150068619A KR101666748B1 (en) 2015-05-18 2015-05-18 Perovskite photovoltaic cell module
CN201680006331.3A CN107210368B (en) 2015-05-18 2016-04-01 Perovskite solar cell module
PCT/KR2016/003378 WO2016186317A1 (en) 2015-05-18 2016-04-01 Perovskite solar cell module

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018088632A1 (en) * 2016-11-08 2018-05-17 고려대학교 산학협력단 Perovskite solar cell module and manufacturing method therefor
CN112670416A (en) * 2020-12-22 2021-04-16 常州亚玛顿股份有限公司 Packaging structure and packaging method of perovskite battery component
KR20210124521A (en) * 2019-03-11 2021-10-14 스위프트 솔라 인코포레이티드 Integration of Bypass Diodes in Thin Film Photovoltaic Module Interconnects

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KR20100074086A (en) * 2007-10-30 2010-07-01 소니 주식회사 Dye-sensitized photoelectric conversion device module, method for manufacturing the same, and electronic device
KR20110070578A (en) * 2009-12-18 2011-06-24 엘지디스플레이 주식회사 Dye-sensitized solar cells module and method for fabricating the same
JP2012204276A (en) * 2011-03-28 2012-10-22 Toyota Central R&D Labs Inc Method for manufacturing dye-sensitized solar cell, dye-sensitized solar cell, and dye-sensitized solar cell module

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KR20110070578A (en) * 2009-12-18 2011-06-24 엘지디스플레이 주식회사 Dye-sensitized solar cells module and method for fabricating the same
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018088632A1 (en) * 2016-11-08 2018-05-17 고려대학교 산학협력단 Perovskite solar cell module and manufacturing method therefor
KR101903242B1 (en) * 2016-11-08 2018-10-01 고려대학교 산학협력단 Perovskite module and fabrication method using laser damage barriers
KR20210124521A (en) * 2019-03-11 2021-10-14 스위프트 솔라 인코포레이티드 Integration of Bypass Diodes in Thin Film Photovoltaic Module Interconnects
KR102608733B1 (en) * 2019-03-11 2023-12-04 스위프트 솔라 인코포레이티드 Integration of bypass diodes within thin film photovoltaic module interconnects
CN112670416A (en) * 2020-12-22 2021-04-16 常州亚玛顿股份有限公司 Packaging structure and packaging method of perovskite battery component

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