JP2005197204A - Transparent solar cell module and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent solar cell module easily and simply connected in series or parallel. <P>SOLUTION: In the transparent solar cell module and its manufacturing method, nano crystal oxide film of which pigment is adsorbed and nano particle platina metal thin film are alternately coated on a conductive film pattern of a transparent substrate to produce a lower electrode plate and an upper electrode plate, respectively. After joining the lower electrode plate to the upper electrode plate and injecting electrolyte between the nano crystal oxide film of which pigment is adsorbed and the nano particle platina metal thin film, the transparent solar cell module is produced by coupling the negative electrode to the positive electrode with conductive material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a solar cell module and a manufacturing method thereof, and more particularly to a transparent solar cell module of a dye-sensitized solar cell substrate and a manufacturing method thereof.

  Dye-sensitized solar cells are photoelectrochemical solar cells announced by Gretzel, Switzerland in 1991, etc., which are cheap and have an energy conversion efficiency of about 10%. It is in the limelight as a next-generation solar cell to replace it.

  The dye-sensitized solar cell includes a transparent conductive electrode on which dye molecules are adsorbed and coated with a nanocrystalline oxide film, an electrode coated with a nanoparticulate metal platinum film, and an iodine-based oxidation-reduction electrolyte.

  The dye-sensitized solar cell configured as described above has a feature that a transparent film can be produced because a nanoparticle oxide having a size of 10 to 20 nm is used. In order to increase the output of the dye-sensitized solar cell, several unit cells must be connected in series or in parallel, but unit cells are connected in series or in parallel to constitute a module. Until now, the module has used the method of connecting in series or in parallel, but the manufacturing method is not easy.

  A dye-sensitized solar cell using a nanocrystalline oxide electrode and a photosensitive dye is known (Patent Document 1).

  A solar cell module in which nano-particle oxide solar cells or the like are connected in series or in parallel without being connected by a conductive wire is known (Patent Document 2).

  A photosensitive dye battery including a polycrystalline metal oxide semiconductor layer has been described (Patent Document 3).

  A photovoltaic battery comprising a light-transmitting conductive layer deposited on a glass plate or transparent polymer sheet has been described (Patent Document 4).

  There has been described a photosensitive dye battery in which incident light does not diffuse and absorption of light having a wavelength in the visible region does not occur (Patent Document 5).

cis-X ₂ Bis ( _2, 2′-bipyridyl-4, 4′-dicarboxylate) is described for photoelectric conversion with a ruthenium (II) charge transfer photosensitizer (Non-patent Document 1).

  There was a report using multiple thick film structures for nanocrystalline optical voltaic cells (Non-Patent Document 2).

  There was a report of a low power consumption dye-sensitized solar cell (Non-patent Document 3).

  An optical volta module using a dye-sensitized nanocrystalline titanium oxide and carbon powder as a substrate has been described (Non-patent Document 4).

U.S. Pat.No. 5,084,365

Korean Patent No. 10-0384893

U.S. Pat.No. 4,927,721

U.S. Pat.No. 5,350,644

U.S. Pat.No. 5,441,827

MK Nazeeruddin et al., "Conversion of Light to Electricity by cis-X2Bis (2, 2'-bipyridyl-4, 4'-dicarboxylate) ruthenium (II) Charge-Transfer Sensitizers (X = Cl-, Br-, I- , CN-, and SCN-) on Nanocrystalline TiO2 Electrodes ", J. Am. Chem. Soc. 1993, 115, pp6382-6390

S. Burnside et al., "Deposition and Characterization of screen-printed porous multi-layer thick film structures from semiconducting and conducting nanomaterials for use in photovoltaic devices", Journal of Materials Science: Materials in Electronics 11, 2000, pp355-362

Henrik Pettersson et al., "Long-term stability of low-power dye-sensitised solar cells prepared by industrial methods", Solar Energy Materials & Solar Cells 70, 2001, pp203-212

Andreas Kay et al., "Low cost photovoltaic modules based on dye sensitized nanocrystalline titanium dioxide and carbon powder", Solar Energy Materials & Solar Cells 44, 1996, pp99-117

  Accordingly, in the present invention, after coating a plurality of conductive film patterns on a transparent substrate, a nanocrystalline oxide film and a nanoparticulate platinum metal thin film in which a dye is adsorbed on the conductive film pattern are alternately coated to form a lower portion and It is an object of the present invention to provide a transparent solar cell module and a method for manufacturing the same that can eliminate the above disadvantages by forming each upper electrode plate.

  In order to achieve the above object, the transparent solar cell module according to the present invention includes a first electrode plate in which a nanoparticle metal film and a nanocrystalline oxide film on which a dye is adsorbed are alternately coated on a conductive substrate; A second electrode plate formed by alternately coating a nanocrystalline oxide film and a nanoparticle metal film on which a dye is adsorbed on a conductive substrate, and the dye facing each other is adsorbed by joining the first and second electrode plates. An electrolyte injected between the nanocrystalline oxide film and the nanoparticulate metal film, a cathode and an anode of a unit cell comprising the nanocrystalline oxide film and the nanoparticulate metal film adsorbing the opposing dyes It includes wirings connected in series.

  In order to achieve the above object, a method for manufacturing a transparent solar cell module according to the present invention comprises alternately coating a nanocrystalline oxide film and a nanoparticulate metal film on a plurality of conductive film patterns coated on a transparent substrate. A step of manufacturing an electrode plate; a step of heat-treating the first electrode plate; and a step of adsorbing a dye to the nanocrystalline oxide film; and a plurality of conductive film patterns coated on a transparent substrate. And a step of manufacturing a second electrode plate by alternately coating the nanocrystalline oxide film, a step of heat-treating the second electrode plate and then adsorbing a dye to the nanocrystalline oxide film, and the second electrode Adhesive to the conductive film pattern around the nanocrystalline oxide film and nanoparticle metal film of the plate Coating, aligning and bonding the first electrode plate on the second electrode plate, and joining the second electrode plate and the first electrode plate to face each other with the nanocrystalline oxide film and the nano A step of injecting an electrolyte between the particle metal film and a step of connecting a cathode and an anode of the unit cell composed of the opposed nanocrystalline oxide film and the nanoparticle metal film by wiring. To do.

The conductive substrate is a glass or plastic substrate, and the conductive film is SnO ₂ : F or ITO.

The nanoparticle metal may be platinum, and the nanocrystalline oxide may be titanium oxide (TiO ₂ ) having a particle size of 10 to 15 nm.

  The dye is adsorbed for 10 to 24 hours, and at this time, the surface of the nanoparticle metal film is coated with a protective film so that the dye cannot be adsorbed.

  The present invention provides a method for producing a transparent dye-sensitized solar cell module in which unit cells can be easily and simply connected in series or in parallel. The lower electrode plate and the upper electrode plate are manufactured by alternately coating the nanocrystalline oxide film and the nanoparticle platinum metal thin film in which the dye is adsorbed on the conductive film pattern of the transparent substrate. After joining the lower and upper electrode plates and injecting an electrolyte between the nanocrystalline oxide film adsorbed with the dye and the nanoparticulate platinum metal thin film, the cathode and anode are made of a conductive material (paste-like, tape-like). , Wire-like) to produce a transparent solar cell module.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIGS. 1a to 1d are plan views for explaining a process of manufacturing an upper electrode plate of a transparent solar cell module according to the present invention.

Referring to FIG. 1a, a conductive film (11) is coated on a transparent substrate (10). If etching lines are formed on the conductive film (11) at regular intervals, and the conductive film (11) is removed along the etching lines, an independent conductive film pattern (11) having the same width remains. The transparent substrate (10) may be a glass or plastic substrate, and the conductive film (11) may be a film coated with a conductive material such as SnO ₂ : F or ITO. .

Referring to FIG. 1b, the conductive film pattern (11) is coated with a nanocrystalline oxide film (13). At this time, the nanocrystalline oxide film (13) is coated only on the odd-numbered conductive film pattern (11), for example. As the nanocrystalline oxide (13), titanium oxide (TiO ₂ ) having a particle size of about 10 to 15 nm is used.

  Referring to FIG. 1c, the conductive metal film pattern (11) exposed between the nanocrystalline oxide films (13) is coated with a nanoparticle metal film (14). At this time, the nanoparticle metal film (14) is coated only on the even-numbered conductive film pattern (11), for example. The nanoparticle metal (14) is platinum (Pt).

  Referring to FIG.1d, the upper electrode plate having the conductive film pattern (11) and the nanocrystalline oxide film (13) and the nanoparticle metal film (14) alternately coated as described above is formed at a temperature of 450 ° C. Heat treatment is performed for about 1 hour to adsorb the dye (15) to the nanocrystalline oxide film (13). The dye adsorption is performed for 10 to 24 hours. At this time, the surface of the nanoparticle metal film (14) is coated with a protective film with a hydrophobic substance (vacuum, grease, etc.) to adsorb the dye. Do not.

  When coating the nanocrystalline oxide film (13) and the nanoparticulate metal film (14), a part of the conductive film pattern (11), for example, a space part (A part) for electrode connection on the upper surface The nanocrystalline oxide film (13) and the nanoparticulate metal film (14) are aligned and coated on the lower surface of the conductive film pattern (11) so as to be formed.

  2a to 2d are plan views for explaining a process of manufacturing a lower electrode plate of the solar cell module according to the present invention.

Referring to FIG. 2a, a conductive film (21) is coated on a transparent substrate (20). If etching lines are formed on the conductive film (21) at regular intervals, and the conductive film (21) is removed along the etching lines, an independent conductive film pattern (21) having the same width remains. The transparent substrate (20) may be a glass or plastic substrate, and the conductive film (21) may be a film coated with a conductive material such as SnO ₂ : F or ITO. . The size of the transparent substrate (20) and the width and interval of the conductive film pattern (21) are the same as those of the upper electrode plate.

Referring to FIG. 2b, the conductive film pattern (21) is coated with a nanocrystalline oxide film (23). At this time, for example, the nanocrystalline oxide film (23) is coated only on the even-numbered conductive film pattern (21), and the nanocrystalline oxide film (13) coated on the upper electrode plate, Avoid overlapping. As the nanocrystalline oxide (23), titanium oxide (TiO ₂ ) having a particle size of about 10 to 15 nm is used.

  Referring to FIG. 2c, the conductive film pattern (21) exposed between the nanocrystalline oxide films (23) is coated with a nanoparticle metal film (24). At this time, for example, the nanoparticle metal film (24) is coated only on the odd-numbered conductive film pattern (21) and does not overlap the nanoparticle metal film (14) coated on the upper electrode plate. To. Platinum (Pt) is used for the nanoparticle metal (24).

  Referring to FIG.2d, the lower electrode plate having the conductive film pattern (21) coated with the nanocrystalline oxide film (23) and the nanoparticle metal film (24) as described above is coated at a temperature of 450 ° C. Heat treatment is performed for about 1 hour to adsorb the dye (25) to the nanocrystalline oxide film (23). The dye adsorption is performed for 10 to 24 hours. At this time, the surface of the nanoparticle metal film (24) is coated with a protective film with a hydrophobic substance (vacuum, grease, etc.) to adsorb the dye. Do not.

  When coating the nanocrystalline oxide film (23) and the nanoparticulate metal film (24), a part of the conductive film pattern (21), for example, a space part (B part) for electrode connection on the lower surface The nanocrystalline oxide film (23) and the nanoparticle metal film (24) are aligned and coated on the lower surface so as to be formed. That is, the upper electrode plate and the lower electrode plate must be formed with spaces (A and B) for connecting electrodes asymmetrically with each other.

  FIGS. 3a to 3e are plan views for explaining a process of completing the transparent solar cell module by combining the upper electrode plate and the lower electrode plate manufactured as described above.

  Referring to FIG. 3a, an adhesive is applied to the conductive film pattern (21) around the nanocrystalline oxide film (23) and the nanoparticle metal film (24) of the lower electrode plate manufactured as shown in FIG. Coat (31). The adhesive (31) uses a heat-sealing polymer film or paste.

  Referring to FIG. 3b, the upper electrode plate manufactured as shown in FIG. 1d is aligned and bonded on the lower electrode plate coated with the adhesive 31 as described above. By joining the lower electrode plate and the upper electrode plate, several unit cells (32) composed of a nanocrystalline oxide film and a nanoparticle metal film facing each other are formed.

  Referring to FIG. 3c, an electrolyte is injected between the lower electrode plate and the upper electrode plate. An electrolyte solution (33) is injected between the nanocrystalline oxide film and the nanoparticle metal film of the unit cell (32).

  Referring to FIG. 3d, the unit cell (32) cathode and anode are made of conductive material such as metal (Ag, Pt, carbon, Au, Vu, lead for soldering) paste, tape or wire. Connect in series at (34).

  FIG. 4 shows a cross section of the transparent solar cell module manufactured as shown in FIG. 3d.

  An upper electrode plate in which a nanocrystalline oxide film (13) and a nanoparticulate metal film (14) having a dye adsorbed on the surface are alternately coated on a conductive film pattern (11) of a transparent substrate (10), and a dye The lower electrode plates in which the nanocrystalline oxide film (23) and the nanoparticle metal film (24) adsorbed on the surface are alternately coated on the conductive film pattern (21) of the transparent substrate (20) are bonded to each other. The lower electrode plate and the upper electrode plate are joined by an adhesive (31) coated around the nanoparticle metal film (14, 24) and the nanocrystalline oxide film (13, 23) on which the dye is adsorbed. Is done.

  The adhesive (31) between the nanocrystalline oxide film (13, 23) and the nanoparticle metal film (14, 24) in which the dyes facing each other are bonded by bonding of the lower electrode plate and the upper electrode plate Each of the electrolytic solutions (33) is injected into the space surrounded by. The cathode and the anode of the unit cell (32) composed of the nanocrystalline oxide film (13, 23) and the nanoparticle metal film (14, 24) on which the opposing dyes are adsorbed are electrically conductive wiring (34 ) Are connected in series.

  As described above, in the present invention, the lower electrode plate and the upper electrode plate are manufactured by alternately coating the nanocrystalline oxide film and the nanoparticle platinum metal thin film in which the dye is adsorbed on the conductive film pattern of the transparent substrate. After the lower electrode plate and the upper electrode plate are joined, an electrolyte is injected between the nanocrystalline oxide film on which the dyes facing each other are adsorbed and the nanoparticulate platinum metal thin film to form a unit cell. A transparent solar cell module is manufactured by connecting the cathodes and anodes of the plurality of unit cells with a conductive material. Therefore, according to the present invention, a simple transparent solar cell module that can be easily connected in series or in parallel can be manufactured.

It is a top view for demonstrating the upper electrode board manufacturing process of the transparent solar cell module which concerns on this invention. It is a top view for demonstrating the upper electrode board manufacturing process of the transparent solar cell module which concerns on this invention. It is a top view for demonstrating the upper electrode board manufacturing process of the transparent solar cell module which concerns on this invention. It is a top view for demonstrating the upper electrode board manufacturing process of the transparent solar cell module which concerns on this invention. It is a top view for demonstrating the lower electrode board manufacturing process of the transparent solar cell module which concerns on this invention. It is a top view for demonstrating the lower electrode board manufacturing process of the transparent solar cell module which concerns on this invention. It is a top view for demonstrating the lower electrode board manufacturing process of the transparent solar cell module which concerns on this invention. It is a top view for demonstrating the lower electrode board manufacturing process of the transparent solar cell module which concerns on this invention. 2D is a plan view for explaining a process of completing a transparent solar cell module by joining an upper electrode plate manufactured as shown in FIG. 1d and a lower electrode plate manufactured as shown in FIG. 2d. 2D is a plan view for explaining a process of completing a transparent solar cell module by joining an upper electrode plate manufactured as shown in FIG. 1d and a lower electrode plate manufactured as shown in FIG. 2d. 2D is a plan view for explaining a process of completing a transparent solar cell module by joining an upper electrode plate manufactured as shown in FIG. 1d and a lower electrode plate manufactured as shown in FIG. 2d. 2D is a plan view for explaining a process of completing a transparent solar cell module by joining an upper electrode plate manufactured as shown in FIG. 1d and a lower electrode plate manufactured as shown in FIG. 2d. It is sectional drawing for demonstrating the transparent solar cell module which concerns on this invention.

Explanation of symbols

10, 20 Transparent substrate 11, 21 Conductive film 13, 23 Nanocrystalline oxide film 14, 24 Nanoparticle metal film 15, 25 Dye 31 Adhesive 32 Unit cell 33 Electrolyte 34 Wiring

Claims (12)

A first electrode plate in which a nanocrystalline metal film and a nanocrystalline oxide film in which a dye is adsorbed are alternately coated on a conductive substrate;
A second electrode plate formed by alternately coating a nanocrystalline oxide film having a dye adsorbed on a conductive substrate and a nanoparticle metal film;
An electrolyte solution each injected between a nanocrystalline oxide film and a nanoparticle metal film in which the dyes facing each other by bonding of the first and second electrode plates are adsorbed;
A transparent solar cell module comprising: a nanocrystalline oxide film on which the opposing pigment is adsorbed; and a wiring connecting a cathode and an anode of a unit cell made of a nanoparticle metal film in series.   The adhesive of claim 1, further comprising an adhesive coated around the nanoparticle metal film of the first electrode plate or the second electrode plate and the nanocrystalline oxide film on which the dye is adsorbed. Transparent solar cell module.   The transparent solar cell module according to claim 2, wherein the adhesive is a heat fusion polymer film or a paste.   The transparent solar cell module according to claim 1, wherein the conductive substrate is a transparent substrate made of glass or plastic and coated with a conductive film. The transparent solar cell according to claim 1, wherein the nanoparticle metal is platinum, and the nanocrystalline oxide is titanium oxide (TiO ₂ ) having a particle size of 10 to 15 nm. module.   The transparent solar cell module according to claim 1, wherein the wiring is formed on the conductive substrate. Coating a plurality of conductive film patterns coated on a transparent substrate alternately with a nanocrystalline oxide film and a nanoparticle metal film to produce a first electrode plate;
After heat-treating the first electrode plate, adsorbing a dye to the nanocrystalline oxide film;
Coating a plurality of conductive film patterns coated on a transparent substrate with a nanoparticle metal film and a nanocrystalline oxide film alternately to produce a second electrode plate;
After heat-treating the second electrode plate, adsorbing a dye to the nanocrystalline oxide film;
Coating the conductive film pattern around the nanocrystalline oxide film and nanoparticle metal film of the second electrode plate with an adhesive;
Aligning and bonding the first electrode plate on the second electrode plate;
Injecting an electrolyte between the nanocrystalline oxide film and the nanoparticulate metal film facing each other by joining the second electrode plate and the first electrode plate;
A method for producing a transparent solar cell module, comprising: connecting a cathode and an anode of a unit cell composed of the opposed nanocrystalline oxide film and the nanoparticle metal film by wiring. The method for manufacturing a transparent solar cell module according to claim 7, wherein the conductive substrate is a glass or plastic substrate, and the conductive film is SnO ₂ : F or ITO. The transparent solar cell module according to claim 7, wherein the nanoparticle metal is platinum, and the nanocrystalline oxide is titanium oxide (TiO ₂ ) having a particle size of 10 to 15 nm. Production method.   8. The dye according to claim 7, wherein the dye is adsorbed for 10 to 24 hours, and at this time, the surface of the nanoparticle metal film is coated with a protective film so that the dye is not adsorbed. A method for producing a transparent solar cell module.   The method for manufacturing a transparent solar cell module according to claim 7, wherein the adhesive is a heat-sealing polymer film or a paste.   The method of manufacturing a transparent solar cell module according to claim 7, wherein the wiring is a conductive metal paste, tape, or wire.

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