KR101286126B1 - Dye sensitized solar cell module - Google Patents

Dye sensitized solar cell module Download PDF

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Publication number
KR101286126B1
KR101286126B1 KR1020080044051A KR20080044051A KR101286126B1 KR 101286126 B1 KR101286126 B1 KR 101286126B1 KR 1020080044051 A KR1020080044051 A KR 1020080044051A KR 20080044051 A KR20080044051 A KR 20080044051A KR 101286126 B1 KR101286126 B1 KR 101286126B1
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KR
South Korea
Prior art keywords
solar cell
dye
cell module
sensitized solar
lead line
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KR1020080044051A
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Korean (ko)
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KR20090118327A (en
Inventor
배호기
김종복
문형돈
박태진
Original Assignee
주식회사 동진쎄미켐
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Publication of KR20090118327A publication Critical patent/KR20090118327A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20Light-sensitive devices
    • H01G9/2068Panels or arrays of photoelectrochemical cells, e.g. photovoltaic modules based on photoelectrochemical cells
    • H01G9/2081Serial interconnection of cells
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20Light-sensitive devices
    • H01G9/2027Light-sensitive devices comprising an oxide semiconductor electrode
    • H01G9/2031Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20Light-sensitive devices
    • H01G9/2059Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/54Material technologies
    • Y02E10/542Dye sensitized solar cells

Abstract

The present invention relates to a dye-sensitized solar cell module, the dye-sensitized solar cell module in which the electrical connection of the neighboring cell or submodule is connected by overlap between the anode electrode and the neighboring cathode electrode, at least one side of the overlap portion The present invention relates to a dye-sensitized solar cell module having a lead line having a bent portion or a protrusion portion drawn out from one end of the anode or cathode.
In this configuration, in the dye-sensitized solar cell module, the bends or protrusions are formed in the lead line of the overlap between the cells or the sub-modules, and the lengths are extended by the plurality of bends or protrusions, so that the edge density increases along the edge. The conduction path is enlarged, so that the current flows more uniformly along the edge to reduce the series resistance of the dye-sensitized solar cell module, thereby improving the photoelectric conversion efficiency of the solar cell module. have.
Dye-sensitized, solar cell, lead line

Description

Dye-Sensitized Solar Cell Module {DYE SENSITIZED SOLAR CELL MODULE}

The present invention relates to a dye-sensitized solar cell module, and more particularly, in a dye-sensitized solar cell module configuration, by forming a bent portion or a protrusion in a lead line of an overlap portion between cells or submodules, As the length is extended and the edge density is increased, the conductive path is enlarged along the edge, so that the current flows more uniformly along the edge, thereby reducing the series resistance of the dye-sensitized solar cell module. It relates to a dye-sensitized solar cell module that can obtain the effect of improving the photoelectric conversion efficiency of the solar cell module.

Much research has been done in this area since the development of dye-sensitized nanoparticle titanium dioxide solar cells by Michael Gratzel of the Swiss National Lozan Institute for Technology (EPFL) in 1991. Dye-sensitized solar cells have the potential to replace conventional amorphous silicon solar cells because their manufacturing cost is significantly lower than conventional silicon-based solar cells. Unlike silicon solar cells, dye-sensitized solar cells absorb visible light It is a photoelectrochemical solar cell mainly composed of a dye molecule capable of generating electron-hole pairs and a transition metal oxide that transfers generated electrons.

The unit cell structure of a general dye-sensitized solar cell is based on the upper and lower transparent substrates and the conductive transparent electrodes formed on the surfaces of the transparent substrates, respectively. The porous metal layer having the adsorbed transition metal is formed, and the catalyst thin film electrode is formed on the other conductive transparent electrode corresponding to the second electrode, and the transition metal oxide, for example, TiO 2 , the porous electrode and the catalyst thin film electrode It has a structure in which electrolyte is filled in between.

However, since the dye-sensitized solar cell has a problem in that efficiency is lower than that of a conventional silicon type solar cell, studies are being actively conducted to increase the efficiency of the solar cell itself. Research is underway to improve this.

Therefore, in the case of the dye-sensitized solar cell module in which the electrical connection of neighboring cells or submodules is overlapped between the anode electrode and the neighboring cathode electrode, a new integration method and module which solves the problem of efficiency degradation due to their integration The situation is in need of improvement.

In order to solve the problems of the prior art as described above, the present invention in the configuration of the dye-sensitized solar cell module, by minimizing the resistance in the lead line of the overlap between the cells or sub-modules to reduce the series resistance of the dye-sensitized solar cell module It is an object of the present invention to provide a dye-sensitized solar cell module for improving the photoelectric conversion efficiency of the solar cell module.

In order to achieve the above object,

In the dye-sensitized solar cell module in which the electrical connection of the neighboring cell or submodule is connected by overlap between the anode electrode and the neighboring cathode electrode,

At least one surface of the overlap portion provides a dye-sensitized solar cell module, characterized in that it has a lead line that is drawn from one end of the anode or cathode to form one or more bent bends to facilitate current flow.

According to the dye-sensitized solar cell module of the present invention, in the dye-sensitized solar cell module configuration, a plurality of edges are formed by sharply bent edges at bends or protrusions, particularly bend / protrusion points, on the lead lines of overlapping portions between cells or submodules. The length is extended along the bend to increase the density of the edge, and as the edge is formed, the current flows in the conductor along the surface or edge, especially the top, as the number of the edges increases. When the edges are evenly distributed, the current flowing along the edges can be flowed more uniformly, thereby reducing the series resistance of the dye-sensitized solar cell module, and thus the photoelectric conversion efficiency of the solar cell module. Can improve the effect.

In addition, when interference with the insulating film coating part, etc. occurs due to the formation of a plurality of sharp nipples, the additional effect of facilitating the electrical breakdown of the insulating film may be easily obtained.

Hereinafter, the present invention will be described in detail.

The dye-sensitized solar cell module of the present invention is a dye-sensitized solar cell module in which the electrical connection of the neighboring cell or submodule is connected by overlap between the anode electrode and the neighboring cathode electrode, wherein at least one surface of the overlap portion is the anode Or a lead line having a bent portion or a protrusion which is drawn out from one end of the cathode and is bent in the middle.

A detailed description thereof will be made with reference to the drawings.

Specific examples of the dye-sensitized solar cell module of the present invention are as shown in Figs. That is, the current flow in the conductor has a characteristic that flows along the surface or the edge of the conductor, especially the nipple, so that the lead line is not formed in a straight line as in the prior art, but in the middle of the lead line (the center is It does not mean, but means a certain part, not the end.) The length of the line itself can be increased by having a bent portion or protrusion, or the edge portion can be increased in the longitudinal direction, or the edge may be formed according to the formation of the protrusion. To increase the part. Such a bent portion may be formed in a curved shape as shown in the example in FIG. 1, preferably, as shown in FIGS. 2 to 4, the bent portion of the lead line is bent to form an angled shape. Having a corner is better because it can provide a surface tip, which is a part that facilitates current flow to an electrode to which an electrical connection of a neighboring cell or submodule is made, and the protrusion may correspond to any shape of protrusion. Preferably, as illustrated in FIG. 5, a protrusion having a polygonal shape in which a quadrangle shape or other vertices are formed may facilitate current flow.

Also, as shown in FIGS. 1 to 5, the lead line may have a closed loop shape which is drawn out from one end of the positive electrode or the negative electrode and connected again from the positive electrode or the negative electrode to the electrode of the neighboring cell or submodule. The current flow can be done together on both sides, so that the current can flow evenly over the entire leadline.

More preferably, as shown in the specific examples of FIGS. 2 to 4, the bent portion of the lead line is configured to include at least one zigzag or c-shaped uneven portion (FIGS. 3 to 4). This is good because it can maximize the length, edge, and area of the tip. In addition, such a zigzag or c-shaped uneven portion (refers to the irregularities formed jagged to the left and right or front and rear in the plane) is a uniform pitch is the current flow to the electrode of the neighboring cell or submodule According to the even distribution of the easy parts, the current can be uniformly flowed over the entire lead line.

The lead line may be formed by forming a TCO (transparent conductive oxide) thin film or a catalyst electrode thin film at the time of cell formation and then patterning the same, and may be used for separate silk screen printing, conventional printing techniques, or patterning after application. It can be formed through a patterning method, etc. In this case, the electrical connection with the lead line formed separately from the TCO thin film or the catalyst electrode thin film corresponding to the cell electrode is of course made separately.

 As a specific example of this, in FIG. 1, the electrical connection between the cells is an overlap between the first electrode (lower electrode) of the first cell (left) and the second electrode (upper electrode) of the second cell (right) adjacent thereto. In this case, the lead line drawn from the lower electrode of the first cell (TCO layer connecting the oxide and dye layer) is formed with a curved portion. The electrode may be a TCO layer connecting layers of oxides and dyes as shown in accordance with the configuration of the overlapping cell, in the case of configuring it in a symmetrical upside down as shown in Figure 2 catalyst electrode (Pt) layer The TCO layer may be connected to the lead line. If the TCO layer does not have a TCO layer, the catalyst electrode layer may be connected to the lead line, or the patterned shape of the layers may be a lead. It can also be a line.

Another specific example is shown in FIG. 2, wherein the electrical connection between the sub-modules in which a plurality of cells are integrated is performed by the first electrode (upper electrode) of the first sub module (left) and the second sub module (right) adjacent thereto. It illustrates the case where the overlap between the two electrodes (lower electrode) is shown, the lead line drawn out from the lower electrode of the second sub-module has a zigzag-shaped bent portion, the lower electrode of the overlapping sub-module Depending on the configuration may be a TCO layer (TCO layer connecting the catalyst electrode (Pt) layer) as shown in the figure, if it is configured up and down symmetrically as shown in Figure 1 TCO layer (oxide and dye) corresponding to the opposite side TCO layer connecting the layer consisting of, or, in the case of not having such a TCO layer, such a catalyst electrode layer is connected to the lead line Or, there is a patterning shape of this layer itself may be a lead line.

In addition, as shown in Figures 3 to 4, the lead line is a form consisting of irregularities in which the c-shape is repeated to the left and right (Fig. 3), or the detailed c-shape is repeated again to the left and right in a straight portion formed in this way It may be configured in the form of the uneven portion (FIG. 4, when the straight portion of FIG. 3 is formed of the uneven portion again). This can maximize the corners and corners. In the case of the submodules shown in Figs. 3 to 4, the electrical connection between the cells differs in the connection method depending on whether the connection between the cells is a parallel connection or a series connection, where only they are electrically connected. As shown in FIG. 1, the specific connection method may be variously configured according to the conventional solar cell direct method. Of course, the connection between the cells or submodules shown in FIGS. The scope of the invention is not limited thereto, but this is merely an example, and various other known dye-sensitized solar cells may be applied thereto.

Finally, as a case of having a protrusion, it may have a configuration as shown in FIG. 5. In addition to forming the bent portion, the above-described effect can be obtained by having a protrusion in the lead line. As shown in the figure, the polygon-shaped protrusion having a large number of squares or other vertices facilitates current flow.

The sub-module formed as described above forms a binder by applying a conductive paste on the overlapped portion, and the bond formed as described above bonds an insulating film, for example, EVA, to the upper and lower surfaces thereof, and bonds the protective glass to the upper and lower surfaces thereof. It can be manufactured as a solar cell module.

The present invention described above is not limited to the above detailed description and examples, and various modifications and changes of those skilled in the art are possible without departing from the spirit and scope of the present invention as set forth in the claims below. Of course it is also included within the scope of the present invention.

Figure 1 shows a cross-sectional view showing an embodiment of the inter-cell coupling in the dye-sensitized solar cell module of the present invention and a plan view of the pre-coupling state for one cell thereof.

Figure 2 shows a cross-sectional view showing an embodiment of the coupling between the sub-module in the dye-sensitized solar cell module of the present invention and a plan view of the state before coupling to one of the sub-modules.

Figure 3 shows a plan view of a pre-coupling state of another embodiment of a submodule applied to the dye-sensitized solar cell module of the present invention.

Figure 4 shows a plan view of a pre-coupling state of another embodiment of a submodule applied to the dye-sensitized solar cell module of the present invention.

Figure 5 shows a plan view of a pre-coupling state of another embodiment of a submodule applied to the dye-sensitized solar cell module of the present invention.

Description of the Related Art [0002]

10a: top glass 10b: bottom glass

20a: Top TCO 20b: Bottom TCO

30 titanium dioxide particles and dye 40 catalyst electrode

50: sealing material 60: conductive paste

100: solar cell 110: conductor

120: common glass 130: lead line

Claims (5)

  1. In the dye-sensitized solar cell module in which the electrical connection of the neighboring cell or submodule is connected by overlap between the anode electrode and the neighboring cathode electrode,
    At least one surface of the overlap portion is drawn from one end of the positive electrode or the negative electrode having a lead line for forming a one or more bent bent portion to facilitate the current flow.
  2. The method of claim 1,
    The lead line is a dye-sensitized solar cell module, characterized in that the closed loop is drawn from one end of the positive or negative electrode and connected again from the positive or negative electrode.
  3. The method of claim 1,
    Dye-sensitized solar cell module, characterized in that the bent portion of the lead line is bent to have an angled corner.
  4. The method of claim 1,
    The curved portion of the lead line dye-sensitized solar cell module, characterized in that it comprises at least one zigzag-shaped or U-shaped uneven portion.
  5. 5. The method of claim 4,
    Dye-sensitized solar cell module, characterized in that the pitch of the zigzag or uneven portion is uniform.
KR1020080044051A 2008-05-13 2008-05-13 Dye sensitized solar cell module KR101286126B1 (en)

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Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020080044051A KR101286126B1 (en) 2008-05-13 2008-05-13 Dye sensitized solar cell module
JP2011509405A JP5539327B2 (en) 2008-05-13 2009-05-12 Dye-sensitive solar cell module
TW98115684A TW200950115A (en) 2008-05-13 2009-05-12 Dye sensitized solar cell module
PCT/KR2009/002482 WO2009139565A2 (en) 2008-05-13 2009-05-12 Dye-sensitized solar cell module

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KR101286126B1 true KR101286126B1 (en) 2013-07-15

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KR101386578B1 (en) * 2009-12-24 2014-04-21 엘지디스플레이 주식회사 Die-sensitized solar cell
CN102214518B (en) * 2010-04-07 2012-10-10 德元太阳能科技股份有限公司 Structure of array type tandem solar battery module and manufacturing method thereof
IT1403134B1 (en) * 2010-12-15 2013-10-04 Dyepower Electrical interconnection system and mechanics of photoelectrochemical cells modules.
IT1403764B1 (en) * 2011-01-31 2013-10-31 Dyepower Elements of vertical electrical connection of photoelectrochemical cells.
WO2012128533A2 (en) * 2011-03-21 2012-09-27 주식회사 동진쎄미켐 Method for manufacturing dye-sensitized solar cell module using laser and dye-sensitized solar cell module thereby
KR20120126224A (en) * 2011-05-11 2012-11-21 한국전자통신연구원 Method for Manufacturing Dye Sensitized Solar Cell
KR20130085225A (en) 2012-01-19 2013-07-29 한국전자통신연구원 Method for manufacturing dye sensitized solar cell and assembly apparatus of solar cell therefor
TW201904083A (en) * 2017-03-24 2019-01-16 日商積水化學工業股份有限公司 Method of manufacturing solar cell module, the solar cell module

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JP2011521449A (en) 2011-07-21
KR20090118327A (en) 2009-11-18
WO2009139565A2 (en) 2009-11-19
WO2009139565A3 (en) 2010-02-25
JP5539327B2 (en) 2014-07-02
TW200950115A (en) 2009-12-01

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