WO2014034978A1 - Dye-sensitized solar cell assembly using conductive block - Google Patents

Description

Dye-Sensitized Solar Cell Assembly Using Conductive Block

The present invention relates to a dye-sensitized solar cell assembly using a conductive block, and more particularly, to an electrical coupling efficiency between unit dye-sensitized solar cell modules by using a conductive block that can be height-adjusted between unit dye-sensitized solar cell modules. And a dye-sensitized solar cell assembly that can be effectively coupled to a glass assembly.

Since the development of the dye-sensitized nanoparticle titanium oxide solar cell by the team of Michael Gratzel of the Swiss National Lausanne Institute of Advanced Technology (EPFL) in 1991, much work has been done in this area. Dye-sensitized solar cells have the potential to replace conventional amorphous silicon solar cells because their manufacturing costs are 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 whose main constituent material is a dye molecule capable of generating a hole pair and a transition metal oxide that transfers generated electrons.

The unit cell structure of a general dye-sensitized solar cell is based on a conductive transparent electrode made of an upper and lower transparent substrate (generally glass) and a transparent conductive oxide (TCO) formed on the surface of the transparent substrate, respectively. On the conductive transparent electrode on one side corresponding to the working electrode), a transition metal oxide porous layer on which the dye is adsorbed is formed, and on the other conductive transparent electrode corresponding to the second electrode (catalyst), the catalyst thin film electrode (mainly Pt) is formed, and has a structure in which an electrolyte is filled between the transition metal oxide, for example, TiO 2, the porous electrode, and the catalyst thin film electrode. That is, a dye-sensitized solar cell is an electrolyte that supplies electrons to an oxidized dye between a working electrode substrate coated with a dye-producing TiO 2 material that receives electrons and a catalytic electrode substrate that supplies electrons. It is configured based on.

For the practical application of such dye-sensitized solar cells, it is necessary to realize a module that does not reduce efficiency even in a large area. For this purpose, there is a method of transporting electrons through a metal grid made of metal such as silver.

That is, in the case of the large-area submodule, the increase of the cell area increases the electron moving distance in the substrate having a large resistance value, resulting in a decrease in efficiency due to the long-distance movement of the electron, and the grid method reduces the efficiency decrease. In order to reduce the resistance and reduce the efficiency by placing the current collecting grid inside the cell, the efficiency of power generation is maximized by optimizing the working electrode substrate and the catalytic electrode substrate respectively by introducing these current collecting grid electrodes. Introduction of the current collecting grid electrode is simple and the process is easy for large area application.

1 is a cross-sectional view of a dye-sensitized solar cell according to the prior art.

Referring to FIG. 1, a dye-sensitized solar cell manufactured by using a series module of a large-area jet-series type is disclosed.

The dye-sensitized solar cell module has a sandwich structure in which the first substrate 2 and the second substrate 4 are bonded to each other as two plate-shaped transparent electrodes, and is discretized on the rear surface of the first substrate 2 as one transparent electrode. And a second electrode 8, which is a second electrode 222 made of platinum or the like, on the second substrate 4, which is another transparent electrode, provided with a conductive first electrode 6 made of titanium, or the like. One unit cell in which the electrolyte 18 is filled in the space between the first substrate 2 and the second substrate 4 provided with the first electrode 6 and the second electrode 8, respectively. By configuring a plurality of cells connected to each other by a metal grid 10 to configure.

At this time, since the metal grid 10 is typically vulnerable to the electrolyte 18, the outside of the metal grid 10 is wrapped with the sealing member 14 to prevent contact with the electrolyte 18, and the entire dye-sensitized solar cell The wall surface of the dye-sensitized solar cell which is located on the outside of the dye-sensitized solar cell constituting the module is closed with the sealing member 14 to prevent the electrolyte 18 from leaking to the outside.

In addition, by etching the conductive film 22 coated on the surface of the substrate (2, 4) adjacent to the metal grid 10 provided between each of the dye-sensitized solar cell is generated inside the dye-sensitized solar cell Prevent electrons from flowing in parallel to other dye-sensitized solar cells. On the other hand, the metal grid 10 is connected so as to extend from one side wall of the cell to the other side wall facing the cell, that is, the electrolyte (18) filled in the dye-sensitized solar cell is moved to another dye-sensitized solar cell It is configured not to.

However, such a dye-sensitized solar cell is implemented only as one device, there is a disadvantage that can not be provided in a form combined with other devices. In particular, when the dye-sensitized solar cell is coupled to a building wall, window, or the like, a structure that effectively maintains the mechanical durability and physical robustness of the solar cell and at the same time effectively induces a current to be produced is required. Furthermore, in the case where a plurality of unit dye-sensitized solar cell modules are combined, a structure for efficiently collecting electricity generated in each module while maintaining the mechanical strength of each dye-sensitized solar cell module is also required.

Therefore, the problem to be solved by the present invention is a dye-sensitized solar cell module that can effectively combine the electricity produced from the combined dye-sensitized solar cell module at the same time, while effectively combining a plurality of unit dye-sensitized solar cell module in the glass window To provide an assembly.

In order to solve the above problems, the present invention is a pair of glass spaced apart from each other; A plurality of dye-sensitized solar cell unit modules disposed inside the pair of glass; A conductive block fixed to any one of the pair of glass to be provided between the plurality of dye-sensitized solar cell unit module, one of the two substrates constituting each of the plurality of dye-sensitized solar cell unit module The dye-sensitized solar cell assembly using a conductive block having an extended width than another substrate, the conductive block is in contact with the extended width region of the one substrate.

 In one embodiment of the present invention, the plurality of dye-sensitized solar cell unit module, the dye-sensitized solar cell first unit module extending one substrate; And a second unit module of the dye-sensitized solar cell adjacent to the first unit module, wherein the second unit module has a structure in which one substrate in the same direction as the first unit module has an extended width, and the conductive block Contact with each of the extended widths of one substrate of the first unit module and the second unit module.

 In one embodiment of the present invention, the conductive block forms a line extending in the longitudinal direction of the dye-sensitized solar cell module.

In one embodiment of the present invention, the dye-sensitized solar cell module assembly using the conductive block further comprises a height adjusting means for adjusting the height of the conductive block.

In one embodiment of the present invention, the height adjusting means includes a screw rod provided between the pair of glass, and a rotating means protruding from any one of the pair of glass, the screw rod can rotate. .

In one embodiment of the invention, the conductive block is further provided with a conductive thin film of a length longer than the length of the conductive block, the conductive block through the conductive thin film in contact with the extended area of the substrate.

The present invention provides a window of an assembly form in which a plurality of dye-sensitized solar cell unit modules are disposed inside a glass having a plurality of layers. In particular, in the dye-sensitized solar cell assembly according to the present invention, the unit module is mechanically coupled by a conductive block in the glass window of the window, and the electricity generated from each module is collected by the conductive block and flows to an external inverter or the like. Furthermore, the conductive block is bonded to one of the windows to adjust the window spacing so that the dye-sensitized solar cell remains firmly within the window.

1 is a cross-sectional view of a dye-sensitized solar cell according to the prior art.

2 is a cross-sectional view of a unit module of a dye-sensitized solar cell according to an embodiment of the present invention.

3 shows an assembly form in which the dye-sensitized solar cell unit module according to an embodiment of the present invention is coupled in a horizontal direction.

4 and 5 are cross-sectional views of the dye-sensitized solar cell module assembly using a conductive block according to an embodiment of the present invention.

FIG. 6 is a view illustrating a form in which the dye-sensitized solar cell unit modules are spaced apart without contacting each other.

 7 is a cross-sectional view illustrating the remaining configuration of the dye-sensitized solar cell module assembly except the unit module of the dye-sensitized solar cell according to the embodiment of the present invention.

8 and 9 are perspective and cross-sectional views of the conductive block 530 according to an embodiment of the present invention.

10 is a cross-sectional view of a dye-sensitized solar cell module assembly according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. Like numbers refer to like elements in the figures.

The present invention provides an assembly with a plurality of dye-sensitized solar cell unit modules disposed inside a glass having a plurality of layers in accordance with the above-described demands. In particular, in the dye-sensitized solar cell assembly according to the present invention, the unit modules are mechanically coupled by a conductive block in the glass window of the window, and the electricity generated from each module is collected by the conductive block and flows to an external inverter or the like. Furthermore, the conductive block is bonded to one of the windows to adjust the window spacing so that the dye-sensitized solar cell remains firmly within the window.

The present invention uses a dye-sensitized solar cell having an asymmetric substrate structure in which one of the substrates of the dye-sensitized solar cell is extended from another substrate for the dye-sensitized solar cell assembly combined with the window.

2 is a cross-sectional view of a unit module of a dye-sensitized solar cell according to an embodiment of the present invention. In the present specification, the unit dye-sensitized solar cell module means physically one substrate unit, and the unit module may include one or more unit cells.

Referring to FIG. 2, the dye-sensitized solar cell unit module according to the present invention includes two substrates facing each other (first substrate 210 and second substrate 220).

Transparent electrode material layers 220a and 220b such as FTO and ITO are stacked on the first and second substrates 210 and 220, and electrons and charges generated therein are transferred to the outside through the conductive material layer. Done. In the present invention, the substrate is described as including a transparent electrode material layer applied thereon.

In particular, the present invention is particularly effective in that any one of the first substrate and the second substrate (the first substrate 210 in FIG. 2, but the scope of the present invention is not limited thereto) in which the conductive material layer is stacked thereon is opposed to the other substrates. Have a wider width. That is, in the prior art, the opposite substrates having the same substrate widths are alternated with each other, but the present invention configures one of the two substrates (one substrate) to have a wider width than the opposite substrate (the other substrate). That is, unlike the prior art of moving charges and electrons up and down, the present invention flows electrons and charges to both sides in the horizontal direction, and improves the bonding effect between modules through the cell configuration.

In one embodiment of the present invention, the first substrate 210 has a structure extending in the width direction compared to the second substrate, preferably has a configuration extending further by a predetermined width (d) on both sides of the substrate. In one embodiment of the present invention further extends by the same width on both sides, but the scope of the present invention is not limited thereto.

In the present invention, the width portions 210a and 210b of the first substrate 210 that extends more than the second substrate 220 are used as regions in contact with the conductive blocks provided in the glass window.

Referring back to Figure 2, one of the two substrates constituting the unit module of the dye-sensitized solar cell according to the present invention has a wider width than the other substrate, in particular has a structure extending by a predetermined width on both sides. Furthermore, the unit module of the dye-sensitized solar cell according to the present invention is laminated on the conductive material layer 220a of the first substrate or the second substrate, the nanoparticle oxide layer 240 on which dye molecules are adsorbed, and the nano It is provided on the conductive material layer 220b on another substrate (here, the second substrate, 220) facing the substrate having the particle oxide layer 240 (here, the first substrate, 210), and made of a material such as platinum. It comprises a counter electrode 250 is made. In particular, such a configuration constitutes a unit cell of a unit module, and there may be one unit cell or a plurality of unit cells as shown in FIG. 4. In this case, the plurality of unit cells have a technical configuration that is physically separated, but electrically connected, the physical separation is by the sealing member 260, the electrical connection is a metal grid 270 in contact with the two substrates at the same time ) The electrolyte 280 is also filled between the two substrates. Since the functions and effects of each element of the dye-sensitized solar cell module according to the present invention are already known, they will be omitted below.

3 shows an assembly form in which the dye-sensitized solar cell unit module according to an embodiment of the present invention is coupled in a horizontal direction.

Referring to FIG. 3, it can be seen that the dye-sensitized solar cell first unit module in which one substrate is extended and the dye-sensitized solar cell second unit module adjacent to the first unit module form a symmetric type in which one substrate in the same direction is extended. Can be. That is, the second module B in which the lower first substrate 310B extends to both sides is shown in FIG. 3, similarly to the first module A in which the lower first substrate 310A extends to both sides. The first module and the second module approach horizontally and contact each other. The open region 410 (hereinafter referred to as a junction region) generated by the contact of the lower substrates extending to both sides in the two modules contacts the conductive block coupled to the glass window in which the dye-sensitized solar cell module assembly is provided. Furthermore, as shown in FIG. 3, the two modules may have extended substrates in contact with each other or may be spaced at predetermined intervals.

The present invention provides a window assembly in the form of coupling the dye-sensitized solar cell module into the glass window of the window as described above. In particular, the present invention is to solve the problem that the dye-sensitized solar cell module is shaken in the glass window frame, when the dye-sensitized solar cell module is not effectively bonded and seated in the glass substrate of the multilayer structure, deteriorating the durability of the glass window and door To do this, a conductive block 530 is physically coupled to any of the windows.

4 and 5 are cross-sectional views of the dye-sensitized solar cell module assembly using a conductive block according to an embodiment of the present invention.

Referring to FIG. 4, the dye-sensitized solar cell module assembly of FIG. 3 is disposed in a pair of glasses 510 and 520 spaced apart from each other. Dye-sensitized solar cell module assembly according to an embodiment of the present invention is composed of a plurality of unit modules, and includes a conductive block 530 in contact with the unit module at the same time. In particular, the conductive block is physically fixed to the glass substrate 510 corresponding to the position at the same time in contact with the extended substrate regions 410 and 420 of each dye-sensitized solar cell module.

That is, in FIG. 4, the two dye-sensitized solar cell unit modules are in contact with each other, and the extended substrates 410 and 420 are in contact with each other. In addition, in FIG. 5, the conductive block 530 comes into contact with the extended substrate regions 410 and 420, and the conductive block 530 may be formed of a conductive metal such as copper, for example. In particular, the present invention physically secures the conductive block 530 to any one of the pair of glass, the glass 510 to which the conductive block 530 is fixed, another glass laminated with a dye-sensitized solar cell module ( 520) to manufacture the assembly. In FIG. 4, the dye-sensitized solar cell is densely packed inside a pair of origins. In particular, the two modules are physically fixed by the conductive block 530, and the electricity generated from the module is transferred to the conductive block 530. It is collected through and flows to the outside.

Another embodiment of the present invention uses a form in which the dye-sensitized solar cell unit modules are separated from each other without being in contact with each other, and FIG. 6 is a diagram illustrating this case.

Referring to FIG. 6, the dye-sensitized solar cell modules are spaced apart from each other, and the conductive blocks 530 fill T-shaped spaces between the spaced dye-sensitized solar cell modules. Through the above configuration, current generated in each unit module may flow to the outside.

As described above, the conductive block is fixed to any one of the pair of glasses, and the conductive block is moved to a dye-sensitized solar cell block laminated to another glass, thereby manufacturing a dye-sensitized solar cell module assembly.

To this end, an embodiment of the present invention uses a height adjusting means for fixing the conductive block to the pair of glass, and adjust the height of the fixed conductive block.

7 is a cross-sectional view illustrating the remaining configuration of the dye-sensitized solar cell module assembly except the unit module of the dye-sensitized solar cell according to the embodiment of the present invention.

Referring to FIG. 7, the present invention includes a height adjusting means centering on the conductive member, wherein the height adjusting means includes a screw rod 610 provided between the pair of glasses 510 and 520, and It protrudes from any one of the pair of glass, and includes a rotating means 620 for rotating the screw rod. That is, by rotating the rotating means 620, the distance between the pair of glass (510, 520) is reduced or increased, through which the conductive block fixed to the glass, the dye-sensitized solar cell provided inside the glass The module can be contacted.

In the present invention, the conductive block 530 may be in the form of a line extending in the longitudinal direction of the module, and furthermore, the conductive block 530 has a conductive thin film 540 having a length longer than the length of the conductive block. Further provided, the conductive block may be in contact with one substrate of the dye-sensitized solar cell module through the conductive thin film.

8 and 9 are perspective and cross-sectional views of the conductive block 530 according to an embodiment of the present invention.

8 and 9, a conductive thin film 540 is provided on one surface of the conductive block 530, and the length of the conductive thin film 540 is longer than the length of the conductive block 530. That is, the present inventors, when a dye-sensitized solar cell is used as a building exterior, such as a building integrated photovoltaic device (BIPV), it is raised in a high or low temperature environment, in this case, the expansion and contraction of the conductive block 530 occurs, It has been noted that a problem such as a short circuit occurs, and to improve the present invention, although the conductive block 530 is expanded or contracted, the present invention may provide a long and stable contact with the substrate of the dye-sensitized solar cell module below. A conductive thin film 540 of length is used. That is, the conductive thin film 540 has a length longer than the conductive block 530 (for example, corrugated), and is attached to both ends of the conductive block 530. As a result, even when the conductive block 530 is expanded, the long conductive thin film may maintain stable contact with one substrate of the dye-sensitized solar cell module underneath.

10 is a cross-sectional view of a dye-sensitized solar cell module assembly according to another embodiment of the present invention.

Referring to FIG. 10, a conductive block 530 is disclosed. The bracket 550 is a separate mounting member on which a dye-sensitized solar cell module inside the glass substrate is placed on a glass substrate facing the conductive block 530. This is further provided. The bracket 550 is a flat member having a predetermined width and height, and the present invention can induce mounting and bonding of a more stable dye-sensitized solar cell module through the bracket 550.

The present invention is not limited to the scope of the embodiments by the above embodiments, all having the technical spirit of the present invention can be seen to fall within the scope of the present invention, the present invention is the scope of the claims by the claims Note that is determined.

Dye-sensitized solar cell assemblies using conductive blocks according to the present invention have industrial applicability that can be used in combination with building windows.

Claims (6)

A pair of glasses disposed spaced apart from each other; A plurality of dye-sensitized solar cell unit modules disposed inside the pair of glass; A conductive block fixed to any one of the pair of glass to be provided between the plurality of dye-sensitized solar cell unit module, one of the two substrates constituting each of the plurality of dye-sensitized solar cell unit module Dye-sensitized solar cell assembly using a conductive block having an extended width than the other substrate, the conductive block is in contact with the extended width region of the one substrate. The method of claim 1, The dye-sensitized solar cell unit module includes: a dye-sensitized solar cell first unit module in which one substrate is extended; And And a second unit module for dye-sensitized solar cell adjacent to the first unit module, The second unit module has a structure in which one substrate in the same direction as the first unit module has an extended width, and the conductive block is simultaneously with each of the extended widths of one substrate of the first unit module and the second unit module. Dye-sensitized solar cell assembly using a conductive block, characterized in that in contact. The method of claim 1, The conductive block is a dye-sensitized solar cell assembly using a conductive block, characterized in that to form a line extending in the longitudinal direction of the dye-sensitized solar cell module. The dye-sensitized solar cell assembly of claim 2, wherein the dye-sensitized solar cell module assembly using the conductive block further comprises height adjusting means for adjusting the height of the conductive block. The method of claim 4, wherein The height adjusting means may include a screw rod provided between the pair of glasses, and a rotating means protruding from any one of the pair of glasses and capable of rotating the screw rod. Dye-sensitized solar cell assembly to use. The method of claim 1, The conductive block further includes a conductive thin film having a length longer than the length of the conductive block, and the conductive block contacts the extended width region of the one substrate through the conductive thin film. Dye-Sensitized Solar Cell Assembly.

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