TWI387111B - Dye - sensitized solar cell packaging method - Google Patents

Description

Dye sensitized solar cell packaging method

The present invention relates to a method of packaging a battery, and more particularly to a method of packaging a dye-sensitized solar cell.

In general, a dye-sensitized solar cell is composed of an upper conductive glass substrate and a lower conductive glass substrate. The function of the upper conductive glass substrate is mainly to dissolve the nano-sized titanium dioxide (TiO ₂ ) particles in a solvent and uniformly coat the upper conductive glass substrate to form a titanium dioxide layer. After heat treatment, a microscopic sponge-like film having a porous and large specific surface area can be formed. This porous titanium oxide film is sensitized by a suitable dye to form a working electrode, which is a main photoelectric conversion member. Then, a metal catalyst layer such as platinum is applied on the lower conductive glass substrate to serve as a corresponding electrode. Finally, the upper conductive glass substrate, the lower conductive glass substrate and an electrolyte are assembled as a sandwich, and the titanium dioxide layer is illuminated to drive the electrons to form a solar cell device.

In the above manufacturing process, the upper conductive glass substrate and the lower conductive glass substrate generally use ITO or FTO transparent conductive glass as the substrate. However, the use of the above two substrates will be expensive, the substrate is not flexible, and the large-area fabrication is difficult. Too big and other issues. In addition, the organic packaging materials currently used are prone to deterioration and damage after long-term exposure to sunlight, and the commonly used packaging materials also have limitations of being inflexible. These are the bottlenecks that are currently not commercially viable for sensitized solar cells.

In view of this, the present invention provides a solar cell packaging method for packaging a flexible dye-sensitized solar cell.

The present invention provides a method for packaging a dye-sensitized solar cell, comprising: providing a working electrode, an opposite electrode, and an isolation layer; combining the working electrode, the opposite electrode and the isolation layer, and disposing the isolation layer in the work Between the electrode and the opposite electrode; providing a soft encapsulating material, after the first hot pressing treatment, forming a receiving space; the combined working electrode, the opposite electrode and the isolating layer are disposed The accommodating space; filling an electrolyte into the accommodating space and discharging more gas; and performing a second hot pressing treatment to seal the accommodating space.

In an embodiment of the invention, the hot pressing process is performed through a mouth machine.

In an embodiment of the invention, the soft encapsulating material is a transparent adhesive film.

In an embodiment of the invention, the soft encapsulating material is a material resistant to attack by an organic solution.

In an embodiment of the invention, the working electrode comprises at least one substrate and a titanium dioxide film, and the titanium dioxide film is disposed on the substrate.

In summary, the use of a flexible encapsulating material provides a flexible housing, thereby providing a flexible dye-sensitized solar cell. In addition, through the hot pressing process of the sealing machine, a low-cost solar cell packaging technology can be provided.

The above described features and advantages of the present invention will be more apparent from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing a method of packaging a dye-sensitized solar cell of the present invention, and Fig. 2 is a schematic view showing the combination of a dye-sensitized solar cell of the present invention. Referring to FIG. 1 and FIG. 2 respectively, the dye-sensitized solar cell 100 includes a working electrode 110, an opposite electrode 120, an isolation layer 130, an electrolyte (not shown), and a casing 140.

The method for packaging the dye-sensitized solar cell 100 of the present invention includes the steps of: first providing a working electrode 110, an opposite electrode 120, and an isolation layer 130 (step S100). Thereafter, the working electrode 110, the opposite electrode 120 and the isolation layer 130 are combined, and the isolation layer 130 is disposed between the working electrode 110 and the opposite electrode 120 (step S200). The arrangement diagram can be referred to FIG. Between the working electrode 110 and the opposite electrode 120, it can be used to avoid the phenomenon that the opposite electrode 120 and the working electrode 110 are in contact with each other to cause a short circuit.

It should be noted that the working electrode 110 of the dye-sensitized solar cell 100 may include at least one substrate and a titanium dioxide film disposed on the substrate, wherein the substrate may be a transparent conductive substrate or an opaque conductive substrate. Since the titanium dioxide film is disposed on the substrate, the working electrode 110 can absorb the sunlight by using the titanium dioxide film, perform photoelectric conversion, and convert the light energy into electric energy.

Thereafter, a soft encapsulating material is provided, and the soft encapsulating material is subjected to the first hot pressing treatment to form a receiving space (step S300). That is to say, in this step, a accommodating space is formed by first performing hot pressing treatment on the periphery of the flexible packaging material through a flexible packaging material, and the accommodating space can be used for accommodating the work of the dye sensitized solar cell 100. The electrode 110, the opposite electrode 120, the isolation layer 130, and the electrolyte, and this flexible packaging material can constitute the housing 140 of the dye-sensitized solar cell 100.

The soft encapsulating material described herein may be a transparent film or a material resistant to organic solution etching, such as plastic, and the hot pressing process may be performed through a mouth machine, for example, when the soft packaging material is a plastic. At the time, the plastic can be heat-pressed by a sealing machine to soften and close the three surrounding parts of the plastic.

Thereafter, the working electrode 110, the opposite electrode 120, and the isolation layer 130 combined in step S200 are disposed in the accommodating space (step S400), and an electrolyte is filled into the accommodating space and more gas is discharged (step S500); A second hot pressing process is performed to seal the accommodation space (step S600).

Similarly, the second hot pressing process referred to here is performed through a port machine. Because the soft packaging material is a plastic, the final opening of the plastic can be hot pressed by a sealing machine, and finally the dye is sensitive. The solar cell 100 is sealed in a flexible packaging material.

In addition, as in the case of a general battery, the working electrode 110 and the opposite electrode 120 can be electrically conducted through the electrolyte. Here, the electrolyte of the dye-sensitized solar cell 100 of the present invention can be an iodine-containing solution for the working electrode and The opposite electrodes are electrically connected to each other.

It should be noted that the difference between the present invention and the prior art is the material of the package and the packaging technology. As described in the prior art, most of the organic packaging materials used in the present invention are easily deteriorated and damaged after being exposed to sunlight for a long time. Has an unbendable limit. However, the present invention proposes a packaging method which is completely different from the conventional one. The packaging method uses a soft packaging material, and the soft packaging material can be sealed by hot pressing treatment of the sealing machine.

As such, such a flexible encapsulating material can provide a flexible housing 140, thus providing a flexible dye-sensitized solar cell 100. In addition, through the hot pressing process of the sealing machine, a low-cost solar cell packaging technology can be provided.

While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the equivalents of the modifications and retouchings are still in the present invention without departing from the spirit and scope of the invention. Within the scope of patent protection.

100. . . Dye sensitized solar cell

110. . . Working electrode

120. . . Relative electrode

130. . . Isolation layer

140. . . case

1 is a flow chart of a packaging method of a dye-sensitized solar cell of the present invention;

2 is a schematic view showing the combination of the dye-sensitized solar cell of the present invention.

Claims (4)

A method for packaging a dye-sensitized solar cell, comprising: providing a working electrode, an opposite electrode, and an isolating layer, wherein the working electrode comprises at least one substrate and a titanium dioxide film disposed on the substrate; combining the working electrode, The opposite electrode and the isolation layer are disposed between the working electrode and the opposite electrode; a soft encapsulating material is provided, and the soft encapsulating material is formed into a receiving space after the first hot pressing treatment, wherein The soft encapsulating material is a light transmissive soft encapsulating material, and the first hot pressing treatment is to heat-treat the portion of the soft encapsulating material to form the receiving space and an opening connecting the receiving space; The working electrode, the opposite electrode and the isolation layer are disposed in the receiving space, and one end of the working electrode and one end of the opposite electrode are respectively exposed outside the opening; an electrolyte is filled into the receiving space And discharging more gas; and performing a second hot pressing treatment to seal the opening to make the receiving space a seal State. The method of packaging a dye-sensitized solar cell according to claim 1, wherein the hot pressing treatment is performed through a mouth machine. The method for packaging a dye-sensitized solar cell according to claim 1, wherein the soft encapsulating material is a transparent film. The method of encapsulating a dye-sensitized solar cell according to claim 1, wherein the soft encapsulating material is a material resistant to attack by an organic solution.