JP5483391B2 - Dye-sensitized solar cell and dye-sensitized solar cell system - Google Patents

Description

  The present invention relates to a dye-sensitized solar cell and a dye-sensitized solar cell system.

  2. Description of the Related Art In recent years, solar cells have attracted attention from the viewpoints of people who consider the environment and alternative uses of conventional means for acquiring electrical energy. As main types of solar cells, Si-based solar cells, organic semiconductor-based solar cells using pigments and conductive polymers, and the like are known. Although the Si-based solar cell having reflectivity has a photoelectric efficiency of 20%, a large-scale facility such as a semiconductor device is required, so that the manufacturing cost is high.

  On the other hand, a dye-sensitized solar cell having both reflective and transmissive characteristics has attracted attention as a solar cell using a material that replaces a Si-based solar cell with high manufacturing cost. Since the dye-sensitized solar cell has a simple structure as compared with the Si solar cell, the manufacturing cost can be reduced, but the photoelectric efficiency is as low as about 10%.

  Thus, if the photoelectric efficiency is high, the manufacturing cost is expensive, and if the manufacturing cost is low, the photoelectric efficiency is low. This is one of the reasons why the solar cells are not yet widespread.

  Therefore, in recent years, in order to improve the power generation efficiency of solar cells, a condensing device using lenses and mirrors has been used to reduce the influence of daily time zones and seasonal fluctuations to increase the light collection efficiency and improve the power generation efficiency. A concentrating solar cell to be designed has been studied.

For example, in the technique disclosed in Patent Document 1, a light reflection layer having a linear slit-shaped light transmission hole group is provided on the back surface of the cylindrical condensing curved surface group, and the reflected light that has not contributed to the photoelectric conversion of the solar cell is again generated. By making it reflect, it is trying to improve the photoelectric conversion efficiency of a solar cell by enabling multiple reflection of light between a light reflection layer and a photoelectric conversion layer.
JP 2003-101059 A

  However, in the technique disclosed in Patent Document 1, since the condensing element is a cylindrical condensing curved surface group, the holes (linear slit light transmitting hole group) provided in the light reflecting layer are linear slits, It is configured to be elongated corresponding to the crests of the respective cylindrical lenses constituting the cylindrical condensing curved surface group. For this reason, a considerable amount of light reflected by the photoelectric conversion layer does not contribute to multiple reflection but escapes through the linear slit-shaped light transmission hole group, resulting in insufficient photoelectric conversion efficiency.

  Further, the light reflection layer is only provided on the back surface of the cylindrical condensing curved surface group. When the solar cell is a Si-based solar cell, it has reflectivity, so even if the light reflecting layer is provided on the back surface of the cylindrical condensing curved surface group, sufficient multiplexing between the light reflecting layer and the photoelectric conversion layer is sufficient. Reflection may occur, but when the solar cell is a dye-sensitized solar cell, it also has transparency, so that the light reflection layer can be transmitted through the photoelectric conversion layer simply by providing it on the back of the cylindrical condensing curved surface group. As a result, sufficient multiple reflection does not occur and the photoelectric conversion efficiency is insufficient.

  An object of the present invention is to sufficiently improve the photoelectric conversion efficiency of a dye-sensitized solar cell.

(1) The present invention provides a first transparent electrode, a second transparent electrode, an electrolyte layer provided between the first transparent electrode and the second transparent electrode, the electrolyte layer, and the first A porous layer provided between the first transparent electrode and containing a dye that absorbs and excites light, and is arranged on the light incident side from the outside of the first transparent electrode to the porous layer A plurality of convex lenses for condensing the light, and a plate provided between the first transparent electrode and the plurality of convex lenses, the first transparent electrode side surface being a light reflecting surface A first reflecting member having a shape, a plurality of holes corresponding to each of the plurality of convex lenses through which light collected by each of the plurality of convex lenses is provided on the first reflecting member, and the second The transparent electrode is provided on the side opposite to the electrolyte layer side, and the second transparent electrode side surface is a light reflecting surface. The plate-like second reflecting member, the first transparent electrode, the second transparent electrode, the electrolyte layer, and the porous layer are provided around the side surfaces thereof, and the side surface side is reflected. A plate-like third reflecting member that is a surface, and the plurality of convex lenses are arranged apart from the first reflecting member, and the first transparent electrode and the second transparent electrode A solar cell body having the electrolyte layer and the porous layer is a dye-sensitized solar cell covered with the first reflecting member, the second reflecting member, and the third reflecting member. .

( 2 ) Further, the plurality of convex lenses may be spherical lenses, and the plurality of holes may be round holes that match a light beam condensed by the spherical lens.

( 3 ) Further, the plurality of convex lenses may be aspherical lenses, and the plurality of holes may be round holes that match a light beam condensed by the aspherical lens.

(4) the plurality of holes, said reflecting surface side has become narrowest, and wider gradually toward said corresponding convex lenses, the plurality of convex lenses, the focal point, of the corresponding hole narrowest You may make it match the position.

(5) Another aspect of the present invention relates to a first transparent electrode, a second transparent electrode, an electrolyte layer provided between the first transparent electrode and the second transparent electrode, and the electrolyte layer. A porous layer provided between the first transparent electrode and containing a dye that absorbs and excites light; and on the incident side of light from the outside of the first transparent electrode to the porous layer A plurality of convex lenses arranged to collect the light, and a plate shape provided between the first transparent electrode and the plurality of convex lenses, the first transparent electrode side surface being a light reflecting surface A plurality of holes corresponding to each of the plurality of convex lenses through which light collected by each of the plurality of convex lenses is provided, and the second reflection member is provided on the first reflection member. Provided on the opposite side of the transparent electrode from the electrolyte layer side, the surface on the second transparent electrode side is a light reflecting surface The plate-like second reflecting member, the first transparent electrode, the second transparent electrode, the electrolyte layer, and the porous layer are provided around the side surface of the porous layer, and the side surface is a reflecting surface. A plate-like third reflecting member, wherein the plurality of convex lenses are spaced apart from the first reflecting member, and the first transparent electrode, the second transparent electrode, and the electrolyte A panel-shaped dye-sensitized solar cell in which a solar cell body having a layer and the porous layer is covered with the first reflecting member, the second reflecting member, and the third reflecting member; A sensor for detecting the position of the sun, a moving mechanism for changing the directions of the plurality of convex lenses and the first reflecting member, and the plurality of convex lenses and the first by the moving mechanism based on the detection of the sensor. The sun that has passed through the plurality of convex lenses in the direction of the reflecting member There is a first dye-sensitized solar cell system you are provided with control means, the controlling to transmit the reflecting member.

  According to the invention of (1), the light transmitted through the electrolyte layer and the porous layer is reflected by the second reflecting member, and multiple reflection is repeated between the first reflecting member and the second reflecting member. Photoelectric conversion efficiency can be improved for the dye-sensitized solar cell.

According to the invention of ( 1 ), light leaking from the side surfaces of the first transparent electrode, the second transparent electrode, the electrolyte layer, and the porous layer is returned by the third reflecting member, so that the first reflecting member, Multiple reflections can be repeated between the second reflecting member and the third reflecting member to further improve the photoelectric conversion efficiency.

( 2 ) According to the invention of ( 3 ), the convex lens is a spherical lens or an aspheric lens, and the hole through which the light collected by the spherical lens or the aspheric lens passes is condensed by the spherical lens or the aspheric lens Because it is a round hole that matches the luminous flux of light, the size of the hole through which the light collected by the spherical lens or aspherical lens passes is minimized, and the light leaking from the hole of the first reflecting member is minimized. Thus, the photoelectric conversion efficiency can be further improved.

According to the invention of (4), the holes have reflecting surface side narrowest, convex lens, since the focal point matches the narrowest and have the position of the hole, the light projecting lens is condensed It is possible to further improve the photoelectric conversion efficiency by further reducing the size of the hole passing therethrough and further suppressing light leaking from the hole of the first reflecting member.

According to the invention of ( 5 ), since sunlight can enter the porous layer through the hole regardless of the season or time zone, solar power generation with high photoelectric conversion efficiency can be achieved regardless of the season or time zone. It can be carried out.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a partially enlarged longitudinal sectional view showing a part of a dye-sensitized solar cell panel according to the present embodiment. The dye-sensitized solar cell panel 1 includes a solar cell main body 21. The solar cell main body 21 includes a substrate 2, a substrate 3, a transparent electrode 4, a transparent electrode 5, an electrolyte layer 6, and a porous layer 7. That is, the solar cell main body 21 includes a substrate 2 and a substrate 3 which are made of transparent glass, plastic, or the like and face each other. A transparent electrode 4 formed by Pt vapor deposition or the like is provided inside the substrate 2, and a transparent electrode (counter electrode) 5 also formed by Pt vapor deposition or the like is provided inside the substrate 3. An electrolyte layer 6 is provided between the transparent electrode 4 and the transparent electrode 5. The electrolyte layer 6 is an electrolytic solution in which, for example, boron is dissolved.

  A porous layer 7 is formed between the electrolyte layer 6 and the transparent electrode 4. The porous layer 7 is, for example, a titanium oxide layer, and contains a dye that absorbs light and excites, such as a ruthenium complex. Photoelectric conversion is performed in the porous layer 7.

  On the incident side (substrate 2 side) of light from the outside of the transparent electrode 4 to the porous layer 7, a microlens array 8 in which a large number of convex lenses 8 a are continuously formed is provided. In this dye-sensitized solar cell panel 1, it is assumed that sunlight L is incident from above, and the microlens array 8 collects the sunlight L and makes it incident on the porous layer 7.

  Between the transparent electrode 4 and the convex lens 8, a plate-like reflecting member 11 is provided on the outer side of the substrate 2. The surface of the transparent electrode 4 side is a light reflecting surface (mirror surface) 11 a. A plurality of holes 12 pass through the reflecting member 11. The holes 12 allow the light L collected by the convex lens 8 a to pass through and enter the porous layer 7.

  On the opposite side of the transparent electrode 5 from the electrolyte layer 7 side and outside the substrate 3, there is provided a reflecting member 13 whose surface on the transparent electrode 5 side is a light reflecting surface (mirror surface) 13a.

  A reflective member having a reflective surface (mirror surface) 14a around the side surfaces of the transparent electrode 2, the transparent electrode 3, the electrolyte layer 6, and the porous layer 7 so as to surround the entire side surfaces. 14 is provided.

  FIG. 2 is a plan view (a) and a perspective view (b) of the microlens array 8. In this microlens array 8, the convex lens 8a is a spherical lens, and each column constituted by the vertical arrangement of the convex lenses 8a is shifted by ½ of the diameter of the adjacent column and the convex lens 8a. The line connecting the centers (optical axes) of 8a is arranged to form a regular triangle or a regular hexagon.

  FIG. 3 is a plan view of the reflecting member 11 corresponding to the microlens array 8. Each hole 12 formed in the reflecting member 11 is formed at a position corresponding to the center (optical axis) of each convex lens 8a. The positions of the holes 12 viewed from the microlens array 8 are also indicated by broken lines in FIG.

  FIG. 4 is a plan view (a) and a perspective view (b) of another example of the microlens array 8. In this example of the microlens array 8, the convex lens 8a is also a spherical lens, and each column constituted by the vertical arrangement of the convex lenses 8a is aligned with the adjacent column and the convex lens 8a. It is arranged like a grid.

  FIG. 5 is a plan view of the reflecting member 11 corresponding to the microlens array 8. Each hole 12 formed in the reflecting member 11 is formed at a position corresponding to the center (optical axis) of each convex lens 8a. The positions of the holes 12 viewed from the microlens array 8 are also indicated by broken lines in FIG.

  Here, when the arrangement of the convex lens 8a in FIGS. 2 and 3 is compared with the arrangement of the convex lens 8a in FIGS. 4 and 5, the arrangement of the convex lens 8a in FIGS. This is desirable because the degree of integration can be increased.

  FIG. 6 is a longitudinal sectional view showing the arrangement of the convex lens 8 a and the reflecting member 11. The hole 12 of the reflecting member 11 is a round hole that matches the light beam L when the light beam L that is condensed by the convex lens 8a that is a spherical lens or an aspherical lens and has a substantially circular cross section passes through.

  The hole 12 has the narrowest portion 12a on the reflecting surface 11a side and gradually becomes wider toward the convex lens 8a. The convex lens 8a is aligned with the position of the reflecting surface 11a where the focal point of the hole 12 is the narrowest.

  As described above, according to the dye-sensitized solar cell panel 1, the light transmitted through the electrolyte layer 6 and the porous layer 7 is reflected by the reflecting member 13, and multiple reflection is performed between the reflecting member 11 and the reflecting member 13. Since it repeats, photoelectric conversion efficiency can be improved about the dye-sensitized solar cell panel 1. FIG.

  Further, since light leaking from the side surfaces of the transparent electrode 2, the transparent electrode 3, the electrolyte layer 6, and the porous layer 7 is returned by the reflecting member 14, multiple reflections are repeated among the reflecting member 11, the reflecting member 12, and the reflecting member 13. The photoelectric conversion efficiency can be further improved.

  Further, the convex lens 8a is a spherical lens, and the hole 12 through which the light collected by the convex lens 8a passes is a round hole that matches the light beam collected by the convex lens 8a. Therefore, the light collected by the convex lens 8a. The width of the hole 12 through which the light passes can be minimized, light leaking from the hole 12 of the reflecting member 11 can be suppressed to the minimum, and the photoelectric conversion efficiency can be further improved.

  In addition, since the hole 12 has the narrowest portion 12a on the reflecting surface 11a side, and the convex lens 8a is aligned with the position where the focal point is the narrowest of the hole 12, the light condensed by the spherical lens passes therethrough. The size of the hole to be reduced can be further reduced, light leaking from the hole 12 of the reflecting member 11 can be further suppressed, and the photoelectric conversion efficiency can be further improved.

  Next, the dye-sensitized solar cell system 101 using the dye-sensitized solar cell panel 1 will be described. 7 is a perspective view of the dye-sensitized solar cell panel 1 portion of the dye-sensitized solar cell system 101 as seen from above, and FIG. 8 is a perspective view of the dye-sensitized solar cell panel 1 portion as seen from below. 9 is a front view of the dye-sensitized solar cell system 101, and FIG. 10 is a right side view thereof.

  As shown in FIG. 7, the above-described dye-sensitized solar cell panel 1 is fixed on the support plate 111 with the surface on the microlens array 8 side facing up. One end portions of the two shafts 113 are fixed to both side portions of the bottom surface 112 of the support plate 111, and drive gears 114 are respectively attached to intermediate portions of the two shafts 113. The other end portions of the two shafts 113 are rotatably supported by two shaft support portions 116 provided on the pedestal portion 115. Also, two sets of drive shaft restraints 117 are provided on the pedestal portion 115, and each set of the drive shaft restraints 117 has a drive motor 118 and both forward and reverse directions by the drive motor 118. And a rotatable drive shaft 119 is supported. The teeth of each drive shaft 119 and the teeth of each drive gear 114 are engaged with each other. When each drive shaft 119 is rotated by two drive motors 118, each drive gear 114 is rotated, and the support plate is centered on the shaft 113. As a result, the dye-sensitized solar cell panel 1 rotates and the direction of the dye-sensitized solar cell panel 1 changes. In FIG. 8, the illustration of the set of drive shaft restraints 117 is omitted for the sake of convenience.

  One end portions of the two shafts 122 are fixed to both side portions of the bottom surface 121 of the pedestal portion 115, and drive gears 123 are respectively attached to intermediate portions of the two shafts 122. The other end portions of the two shafts 122 are rotatably supported by two shaft support portions 125 provided on the pedestal portion 124. In addition, two sets of drive shaft restraints 126 are provided on the pedestal portion 124, and each set of the drive shaft restraints 126 is provided in both forward and reverse directions by the drive motor 127 and the drive motor 127. A rotatable drive shaft 128 is supported. The teeth of each drive shaft 128 and the teeth of each drive gear 123 mesh with each other. When each drive shaft 128 is rotated by the two drive motors 127, each drive gear 123 rotates, and the support plate is centered on the shaft 122. As a result, the dye-sensitized solar cell panel 1 rotates and the direction of the dye-sensitized solar cell panel 1 changes.

  The axial direction of the shaft 113 and the axial direction of the shaft 122 intersect each other at right angles, and the dye-sensitized solar cell centering on the shaft 122 and the direction in which the dye-sensitized solar cell panel 1 rotates about the shaft 113. It is different from the direction in which the panel 1 rotates. Thus, since the dye-sensitized solar cell panel 1 can be rotated by two axes (two degrees of freedom), the dye-sensitized solar cell panel can be rotated 360 degrees around the dye-sensitized solar cell panel 1 in any direction. 1 can be tilted.

  Further, on the support plate 111, a columnar position detecting condensing lens 42 constituted by a transparent cylindrical tube filled with a transparent liquid such as a resin, a glass column or water is provided. A position detection sensor 43 is arranged on the circumference in the vicinity of the focal point of the position detection condenser lens 42.

  FIG. 11 is an explanatory diagram showing a configuration example of the position detection condensing lens 42 and the position detection sensor 43. In FIG. 11A, a cylinder having a refractive index of about 1.5 is used as the position detection condensing lens 42. In this case, since the focal point of the position detection condensing lens 42 coincides with its circumferential surface, the position detection sensor 43 is attached around the position detection condensing lens 42. The sunlight L that has entered the position detection condenser lens 42 is condensed on the position detection sensor 43 on the circumference of the position detection condenser lens 42, whereby the position of the sun can be detected.

  On the other hand, FIG. 11B shows an example in which the position detecting condenser lens 42 having a refractive index of about 1.3 to 1.4 is used. This can be achieved, for example, by filling a glass cylinder with water. Since the refractive index of water is 1.338, the focal point of the position detecting condensing lens 42 in this case exists outside the circumferential surface of itself. Accordingly, a transparent cylindrical tube 44 made of a material such as glass is disposed outside the position detection condenser lens 42 so that the circumference thereof coincides with the focal point of the position detection condenser lens 42, and the position detection is performed here. The sensor 43 is pasted. Also in this case, the sunlight L that has entered the position detection condensing lens 42 is condensed on the position detection sensor 43, and thereby the position of the sun can be detected.

  FIG. 12 is a plan view showing an arrangement example of the position detection condensing lens 42, and the position detection sensor 43 is omitted. In FIG. 12, two position detection condensing lenses 42 are prepared and placed so that their axes are orthogonal to each other. These are arranged so that, for example, the axis of one position detecting condenser lens 42 is oriented in the north-south direction and the other is placed in the east-west direction. Thereby, the movement of the day of the sun can be detected by the position detecting condensing lens 42 whose axis is directed in the north-south direction, and the seasonal change of the sun height is detected by the position detecting condensing lens 42 whose axis is directed in the east-west direction. Can be detected. The positions of these suns are detected as information on the angle at which the sunlight L is collected on the position detection sensor 43, and are output as angle signals from the position detection sensor 43.

  FIG. 13 is a block diagram of electrical connection of the dye-sensitized solar cell system 101. The control unit 41 includes a microcomputer and centrally controls each unit of the dye-sensitized solar cell system 101. The control unit 41 receives an angle signal indicating the position where the sunlight L is collected from the position detection sensor 43 and determines the incident direction and the incident angle of the sunlight L. Then, according to the determination, the two drive motors 118 and the two drive motors 127 are driven to control the direction of the dye-sensitized solar cell panel 1.

  The drive gears 114 and 123 and the drive shafts 119 and 128 have a relationship between a worm wheel and a worm gear. For example, wind pressure acts on the dye-sensitized solar cell system 101 installed outdoors by blowing wind. However, it is not necessary to reversely rotate the drive gears 114 and 123 to correct the orientation of the dye-sensitized solar cell panel 1.

  Further, although the drive gears 114 and 123 are cut over the entire circumference, the support plate 111 and the pedestal 115 are moved by the rotational drive of the drive gears 114 and 123. Therefore, when these movements are large, the support plate 111, the pedestal part 115, and the pedestal part 124 may collide with each other, and in order to prevent these, notches and reliefs should be made in advance.

  The dye-sensitized solar cell system 101 is installed with the dye-sensitized solar cell panel 1 facing in the south direction in the northern hemisphere so that the southern middle altitude of the sun is included in the operating range in advance. 14 shows a state in which the support plate 111 is tilted by such control, FIG. 15 shows a state in which the pedestal portion 115 is tilted, and FIG. 16 shows a state in which both the support plate 111 and the pedestal portion 115 are tilted. Indicates. By performing the control as described above, the dye-sensitized solar cell system 101 controls so that sunlight L is always incident perpendicularly to the dye-sensitized solar cell panel 1. Regardless of the band, the sunlight L collected by the convex lens 8a can be made to enter the porous layer 7 through the hole 12, so that the photovoltaic power generation with high photoelectric conversion efficiency can be performed regardless of the season or time zone. Can do.

  As the sun tracking drive mechanism, a graticule or an equator used in a telescope may be used.

It is a partial expanded longitudinal cross-sectional view which shows a part of dye-sensitized solar cell panel concerning this Embodiment. It is the top view (a) and perspective view (b) of a micro lens array. It is a top view of the reflection member corresponding to a micro lens array. It is the top view (a) and perspective view (b) of other examples of a micro lens array. It is a top view of the reflection member corresponding to a micro lens array. It is a longitudinal cross-sectional view which shows arrangement | positioning with a convex lens and a reflection member. It is the perspective view which looked at the dye-sensitized solar cell panel part of the dye-sensitized solar cell system from the top. It is the perspective view which looked at the same dye-sensitized solar cell panel part from the bottom. It is a front view of a dye-sensitized solar cell system using a dye-sensitized solar cell panel. It is the same right view. It is explanatory drawing which shows the structural example of the condensing lens for position detection, and a position detection sensor. It is a top view which shows the example of arrangement | positioning of the condensing lens for position detection. It is a block diagram of the electrical connection of a dye-sensitized solar cell system. It is a front view which shows the state which inclined the support plate in the dye-sensitized solar cell system. It is a front view which shows the state which inclined the base part in the dye-sensitized solar cell system. It is a front view which shows the state which inclined both the support plate and the base part in the dye-sensitized solar cell system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dye-sensitized solar cell panel 2 Substrate 3 Substrate 4 Transparent electrode 5 Transparent electrode 6 Electrolyte layer 7 Porous layer 8 Lens array 8a Convex lens 11 Reflective member 11a Reflective surface 12 Hole 13 Reflective member 13a Reflective surface 14 Reflective member 14a Reflective surface DESCRIPTION OF SYMBOLS 41 Control part 42 Condensing lens for position detection 43 Position detection sensor 101 Dye-sensitized solar cell system 114 Drive gear 118 Drive motor 119 Drive shaft 123 Drive gear 127 Drive motor 128 Drive shaft

Claims (5)

A first transparent electrode;
A second transparent electrode;
An electrolyte layer provided between the first transparent electrode and the second transparent electrode;
A porous layer provided between the electrolyte layer and the first transparent electrode and containing a dye that absorbs and excites light;
A plurality of convex lenses arranged on the incident side of light from the outside of the first transparent electrode to the porous layer, and condensing the light;
A plate-like first reflecting member provided between the first transparent electrode and the plurality of convex lenses, the first transparent electrode side surface being a light reflecting surface;
A plurality of holes corresponding to each of the plurality of convex lenses through which light collected by each of the plurality of convex lenses is provided in the first reflecting member;
A plate-like second reflecting member provided on the side opposite to the electrolyte layer side of the second transparent electrode, wherein the surface on the second transparent electrode side is a light reflecting surface;
A plate-like third reflecting member provided around the side surfaces of the first transparent electrode, the second transparent electrode, the electrolyte layer, and the porous layer, and the side surface side being a reflecting surface When,
With
The plurality of convex lenses are spaced apart from the first reflecting member,
The solar cell main body having the first transparent electrode, the second transparent electrode, the electrolyte layer, and the porous layer includes the first reflecting member, the second reflecting member, and the third reflecting member. Dye-sensitized solar cell covered with The plurality of convex lenses are spherical lenses;
The plurality of holes are round holes that match a light beam condensed by the spherical lens.
The dye-sensitized solar cell according to claim 1. The plurality of convex lenses are aspheric lenses,
The plurality of holes are round holes that match the light flux collected by the aspheric lens.
The dye-sensitized solar cell according to claim 1. The plurality of holes are narrowest on the reflecting surface side and gradually widen toward the corresponding convex lens;
The plurality of convex lenses are aligned with the narrowest position of the corresponding hole.
The dye-sensitized solar cell according to any one of claims 1 to 3. A first transparent electrode; a second transparent electrode; an electrolyte layer provided between the first transparent electrode and the second transparent electrode; and between the electrolyte layer and the first transparent electrode. A porous layer containing a dye that absorbs and excites light and is arranged on the incident side of light from the outside of the first transparent electrode to the porous layer, and collects the light A plate-like first reflecting member provided between the first convex electrode and the first transparent electrode and the plurality of convex lenses, the first transparent electrode side surface being a light reflecting surface; A plurality of holes corresponding to each of the plurality of convex lenses provided in the first reflecting member and through which light collected by each of the plurality of convex lenses passes, and the electrolyte layer side of the second transparent electrode A plate-like second provided on the opposite side, the second transparent electrode side surface being a light reflecting surface A projecting member, and a plate-like third surface provided around the side surfaces of the first transparent electrode, the second transparent electrode, the electrolyte layer, and the porous layer, and the side surface is a reflective surface. A plurality of convex lenses , the plurality of convex lenses being spaced apart from the first reflecting member, and the first transparent electrode, the second transparent electrode, the electrolyte layer, and the porous layer. A panel-shaped dye-sensitized solar cell, the solar cell body having a panel covered with the first reflecting member, the second reflecting member, and the third reflecting member;
A sensor for detecting the position of the sun;
A moving mechanism for changing directions of the plurality of convex lenses and the first reflecting member;
Control means for controlling the directions of the plurality of convex lenses and the first reflecting member by the moving mechanism so that sunlight transmitted through the plurality of convex lenses is transmitted through the first reflecting member based on detection of the sensor; ,
A dye-sensitized solar cell system.

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