JP2006190585A - Dye-sensitized solar cell - Google Patents

Dye-sensitized solar cell Download PDF

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JP2006190585A
JP2006190585A JP2005002083A JP2005002083A JP2006190585A JP 2006190585 A JP2006190585 A JP 2006190585A JP 2005002083 A JP2005002083 A JP 2005002083A JP 2005002083 A JP2005002083 A JP 2005002083A JP 2006190585 A JP2006190585 A JP 2006190585A
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electromagnetic wave
dye
solar cell
layer
sensitized solar
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Masaya Yuasa
雅也 湯浅
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Sekisui Jushi Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E10/542—Dye sensitized solar cells

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a dye-sensitized solar cell capable of reducing an adverse effect generated by a reflection of electromagnetic wave without sharply lowering power generation efficiency. <P>SOLUTION: It is unnecessary to separately arrange an electromagnetic wave absorbing means since an electromagnetic wave absorbing layer 7 is arranged on a transparent substrate 1 and/or a back substrate 6, and the adverse effect of the electromagnetic wave can be reduced simply and effectively by forming a structure laminating the electromagnetic wave absorbing layer 7, a spacer made of dielectric, and an electromagnetic wave reflection layer on electromagnetic wave receiving side, which absorbs the electromagnetic wave with high efficiency. Furthermore, the surface resistance of a transparent conductive electrode layer 2 and/or a conductive layer 5 can be kept low when they are used as reflecting body, and the sharp lowering of power generation efficiency can be prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、電磁波による悪影響を受けやすい場所に好適に設置される色素増感型太陽電池に関するものである。   The present invention relates to a dye-sensitized solar cell that is suitably installed in a place that is easily affected by electromagnetic waves.

透明性の高い色素増感型太陽電池として、例えば２枚の透明導電性ガラス基板の間に透明半導体微粒子、色素、及び電解質を挟みこんだ色素増感型太陽電池において、２色以上の色素を１つの基板上に有させることで文字等を表現することができる色素増感型太陽電池が開示されている（例えば特許文献１）。   As a dye-sensitized solar cell having high transparency, for example, in a dye-sensitized solar cell in which transparent semiconductor fine particles, a dye, and an electrolyte are sandwiched between two transparent conductive glass substrates, a dye having two or more colors is used. A dye-sensitized solar cell that can express characters and the like by being provided on one substrate is disclosed (for example, Patent Document 1).

特開２００１−１７６５６５号公報JP 2001-176565 A

しかしながら、特許文献１のような透明な色素増感型太陽電池を、例えばオフィスビルの窓などに用いて窓面の活用を行おうとすると、色素増感型太陽電池の透明導電性ガラス基板の導電性層が電磁波反射体となり、オフィスから窓面に向かって発せられた電磁波がオフィス内に反射され、該電磁波による人体や通信環境への悪影響が起こる恐れがあった。かかる反射を抑制するために、導電性層の表面抵抗値を上昇させると、導電性層による電力の取り出しが円滑に行われず発電効率の顕著な低下を招くこととなり、またオフィスビルであれば情報の漏洩に繋がる恐れもある。   However, when the transparent dye-sensitized solar cell as in Patent Document 1 is used for, for example, a window of an office building to make use of the window surface, the conductivity of the transparent conductive glass substrate of the dye-sensitized solar cell is considered. The conductive layer becomes an electromagnetic wave reflector, and electromagnetic waves emitted from the office toward the window surface are reflected in the office, which may cause adverse effects on the human body and the communication environment. If the surface resistance value of the conductive layer is increased in order to suppress such reflection, power extraction by the conductive layer will not be performed smoothly, resulting in a significant decrease in power generation efficiency. There is also a risk of leakage.

本発明は上記の如き課題に鑑みてなされたものであり、発電効率を顕著に低下させることなく、電磁波の反射によって生じる悪影響を軽減することができる色素増感型太陽電池を提供せんとするものである。   The present invention has been made in view of the problems as described above, and is intended to provide a dye-sensitized solar cell that can reduce the adverse effects caused by the reflection of electromagnetic waves without significantly reducing the power generation efficiency. It is.

上記目的を達成するため、本発明は以下のような構成としている。すなわち、本発明に係わる色素増感型太陽電池は、太陽光到来側から順に透明基板、透明導電性層、色素が導入された酸化物半導体層、電解質層、導電性層及び裏面基板が積層されて形成され、前記透明基板の太陽光到来側及び／又は前記裏面基板の太陽光到来側と反対側に電磁波吸収層が設けられると共に、該電磁波吸収層が設けられた前記透明基板及び／又は裏面基板が電磁波を透過する材料からなることを特徴とするものである。   In order to achieve the above object, the present invention is configured as follows. That is, in the dye-sensitized solar cell according to the present invention, a transparent substrate, a transparent conductive layer, an oxide semiconductor layer into which a dye is introduced, an electrolyte layer, a conductive layer, and a back substrate are laminated in order from the sunlight arrival side. The transparent substrate and / or the back surface provided with the electromagnetic wave absorption layer provided on the opposite side of the sunlight arrival side of the transparent substrate and / or the sunlight arrival side of the back substrate. The substrate is made of a material that transmits electromagnetic waves.

本発明に係わる色素増感型太陽電池によれば、透明基板及び／又は裏面基板に電磁波吸収層が設けられることで別途電磁波吸収手段を設ける必要がなく、また電磁波到来側から電磁波吸収層、誘電体からなるスペーサー及び電磁波反射層という高い効率で電磁波の吸収を行うことに繋がる積層構造を形成することで、簡便且つ効率よく電磁波による悪影響を軽減することができる。また透明導電性層及び／又は導電性層を電磁波反射体として用いることでその表面抵抗を低く保持したままとすることができ、発電効率の顕著な低下を防止することができる。   According to the dye-sensitized solar cell according to the present invention, an electromagnetic wave absorbing layer is provided on the transparent substrate and / or the back substrate, so that it is not necessary to separately provide an electromagnetic wave absorbing means. By forming a laminated structure that leads to absorption of electromagnetic waves with high efficiency such as a spacer made of a body and an electromagnetic wave reflection layer, adverse effects due to electromagnetic waves can be reduced easily and efficiently. Further, by using the transparent conductive layer and / or the conductive layer as an electromagnetic wave reflector, the surface resistance can be kept low, and a remarkable decrease in power generation efficiency can be prevented.

また請求項１に記載の色素増感型太陽電池において、前記電磁波吸収層が設けられた前記透明基板及び／又は裏面基板は、主として吸収の対象となる電磁波が、該透明基板及び／又は裏面基板を透過する際の波長の四分の一の厚みとなされていれば、電磁波吸収層の表面から電磁波進行方向を見込んだ入力インピーダンスを、自由空間の特性インピーダンスに合わせて更に効率よく電磁波を減衰させることができ好ましい。   2. The dye-sensitized solar cell according to claim 1, wherein the transparent substrate and / or the back substrate provided with the electromagnetic wave absorption layer has an electromagnetic wave mainly to be absorbed by the transparent substrate and / or the back substrate. If the thickness is one-fourth of the wavelength when transmitting light, the input impedance looking into the electromagnetic wave traveling direction from the surface of the electromagnetic wave absorbing layer is attenuated more efficiently in accordance with the characteristic impedance of free space. Can be preferable.

本発明に係わる色素増感型太陽電池によれば、透明基板及び／又は裏面基板に電磁波吸収層が設けられることで別途電磁波吸収手段を設ける必要がなく、また電磁波到来側から電磁波吸収層、誘電体からなるスペーサー及び電磁波反射層という高い効率で電磁波の吸収を行うことに繋がる積層構造を形成することで、簡便且つ効率よく電磁波による悪影響を軽減することができる。また透明導電性層及び／又は導電性層を電磁波反射体として用いることでその表面抵抗を低く保持したままとすることができ、発電効率の顕著な低下を防止することができる。   According to the dye-sensitized solar cell according to the present invention, an electromagnetic wave absorbing layer is provided on the transparent substrate and / or the back substrate, so that it is not necessary to separately provide an electromagnetic wave absorbing means. By forming a laminated structure that leads to absorption of electromagnetic waves with high efficiency such as a spacer made of a body and an electromagnetic wave reflection layer, adverse effects due to electromagnetic waves can be reduced easily and efficiently. Further, by using the transparent conductive layer and / or the conductive layer as an electromagnetic wave reflector, the surface resistance can be kept low, and a remarkable decrease in power generation efficiency can be prevented.

本発明に係わる最良の実施の形態について、図面に基づき以下に具体的に説明する。   BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.

図１は、本発明に係わる色素増感太陽電池の、第一の実施形態を示す断面図である。色素増感型太陽電池１０は、太陽光到来側αから順に、ポリカーボネート樹脂からなる透明基板１と、透明基板１にＩＴＯ（酸化インジウムスズ）が蒸着されることで形成された透明導電性層２と、透明導電性層２上に酸化チタンを用いて多孔質の薄膜を形成し、当該薄膜にルテニウム錯体である色素を導入した酸化物半導体層３と、メトキシプロピオニトリル溶媒中に金属ヨウ素を配合した電解質層４と、ポリカーボネート樹脂からなる透明な裏面基板６と、裏面基板６の太陽光到来側αに白金を蒸着させて形成した導電性層５が積層されている。透明基板１の太陽光到来側αには、更にＩＴＯ（酸化インジウムスズ）が蒸着されてなり適当な面抵抗値を有する透明な電磁波吸収層７が形成されることで、太陽光到来側αから到来する電磁波が電磁波吸収体７により減衰され、更に透明基板１を形成するポリカーボネート樹脂は電磁波を透過する材料すなわち誘電体であるから、電磁波は透明基板１を透過して、電磁波反射体である透明導電性層２により反射され、再度電磁波吸収体７により減衰されることで電磁波は効率よく減衰される。更にまた、電磁波吸収層７の外面には、ポリカーボネート樹脂からなり電磁波吸収層７を水分等から保護する表面保護板８が設けられている。   FIG. 1 is a cross-sectional view showing a first embodiment of a dye-sensitized solar cell according to the present invention. The dye-sensitized solar cell 10 includes, in order from the sunlight arrival side α, a transparent substrate 1 made of a polycarbonate resin, and a transparent conductive layer 2 formed by depositing ITO (indium tin oxide) on the transparent substrate 1. Then, a porous thin film is formed on the transparent conductive layer 2 using titanium oxide, and the oxide semiconductor layer 3 in which a dye which is a ruthenium complex is introduced into the thin film, and metal iodine is added to the methoxypropionitrile solvent. A blended electrolyte layer 4, a transparent back substrate 6 made of polycarbonate resin, and a conductive layer 5 formed by depositing platinum on the sunlight arrival side α of the back substrate 6 are laminated. On the sunlight arrival side α of the transparent substrate 1, ITO (Indium Tin Oxide) is further deposited to form a transparent electromagnetic wave absorption layer 7 having an appropriate surface resistance value. Since the incoming electromagnetic wave is attenuated by the electromagnetic wave absorber 7 and the polycarbonate resin forming the transparent substrate 1 is a material that transmits the electromagnetic wave, that is, a dielectric, the electromagnetic wave passes through the transparent substrate 1 and is transparent as an electromagnetic wave reflector. The electromagnetic wave is efficiently attenuated by being reflected by the conductive layer 2 and attenuated again by the electromagnetic wave absorber 7. Furthermore, a surface protection plate 8 made of a polycarbonate resin and protecting the electromagnetic wave absorbing layer 7 from moisture or the like is provided on the outer surface of the electromagnetic wave absorbing layer 7.

ここで、吸収の対象となる電磁波としては、オフィスの無線ＬＡＮに多く使用される２．４ＧＨｚ帯、５ＧＨｚ帯、ＡＨＳやＥＴＣ等において使用されているＤＳＲＣの一般的な周波数５．８ＧＨｚ帯、追突防止レーダに使用されるミリ波帯、例えば６０ＧＨｚ帯、７６ＧＨｚ帯の帯域の電磁波が挙げられるが、透明導電性層２の面抵抗値、透明基板１の材料定数（複素比誘電率）、表面保護板８の材料定数および厚みを見込んだ上で、かつ、透明基板１の厚み及び電磁波吸収層２の面抵抗値を適切に決定することで、電磁波をより効率よく減衰させることが可能となる。例えば、誘電体からなる透明基板１内での電磁波の波長がλｇである場合、透明基板１の厚みを約λｇ／４とし、また電磁波吸収層７の面抵抗値を各々の電磁波の波長に応じて設定することで、表面保護板８の電磁波到来側の表面から電磁波進行方向を見込んだ電磁波インピーダンスを、自由空間のインピーダンスに合わせることにより、電磁波は更に効率的に減衰される。すなわち、透明基板１の厚みは主として吸収の対象となる電磁波が透明基板１を透過する際の波長の四分の一の厚みとしておくことで電磁波は極めて効率よく減衰されてその悪影響を軽減することができる。また透明基板１を各種透明な合成樹脂、ガラス、空気等、用途に応じて用いることで、電磁波の吸収特性を設定することが可能である。   Here, as electromagnetic waves to be absorbed, 2.4 GHz band, 5 GHz band, which are often used in office wireless LAN, DSRC general frequency 5.8 GHz band used in AHS, ETC, etc., rear-end collision Examples include electromagnetic waves in the millimeter wave band used for prevention radar, such as 60 GHz band and 76 GHz band. The surface resistance value of the transparent conductive layer 2, the material constant of the transparent substrate 1 (complex relative dielectric constant), and surface protection Taking into account the material constant and thickness of the plate 8 and appropriately determining the thickness of the transparent substrate 1 and the surface resistance value of the electromagnetic wave absorbing layer 2, the electromagnetic wave can be attenuated more efficiently. For example, when the wavelength of the electromagnetic wave in the transparent substrate 1 made of a dielectric material is λg, the thickness of the transparent substrate 1 is about λg / 4, and the surface resistance value of the electromagnetic wave absorbing layer 7 depends on the wavelength of each electromagnetic wave. Thus, the electromagnetic wave is further efficiently attenuated by matching the electromagnetic wave impedance in which the electromagnetic wave traveling direction is expected from the surface on the electromagnetic wave arrival side of the surface protection plate 8 with the impedance of the free space. That is, the thickness of the transparent substrate 1 is set to a thickness that is a quarter of the wavelength when the electromagnetic wave to be absorbed mainly passes through the transparent substrate 1, so that the electromagnetic wave is attenuated extremely efficiently to reduce its adverse effects. Can do. Further, by using the transparent substrate 1 according to the use such as various transparent synthetic resins, glass, air, etc., it is possible to set electromagnetic wave absorption characteristics.

また透明誘電体層２は電磁波反射体として機能すべくその面抵抗値は低抵抗である必要がある。例えば透明誘電体層２による所望のシールド効果が２０ｄＢ以上の場合には、透明誘電体層２の面抵抗値を２０Ω□程度以下にする必要がある。その面抵抗値は透明誘電体層２による所望の遮蔽性能によって決定され得るが、一般に導電性の高い材料は低い面抵抗値となることから、透明導電性層２は高い導電性を有するものとして色素増感型太陽電池１０としての性能を損なうことが少なくできる。なお、前述の面抵抗値とは、透明誘電体層２及び電磁波吸収層７が空隙を有する場合であっても、一様な平面を有する薄膜であると仮定した場合の等価的な面抵抗値を意味している。   Further, the transparent dielectric layer 2 needs to have a low surface resistance value in order to function as an electromagnetic wave reflector. For example, when the desired shielding effect by the transparent dielectric layer 2 is 20 dB or more, the surface resistance value of the transparent dielectric layer 2 needs to be about 20Ω □ or less. The sheet resistance value can be determined by the desired shielding performance by the transparent dielectric layer 2, but generally a highly conductive material has a low sheet resistance value, so that the transparent conductive layer 2 has high conductivity. The performance as the dye-sensitized solar cell 10 can be reduced. The above-mentioned sheet resistance value is an equivalent sheet resistance value when it is assumed that the transparent dielectric layer 2 and the electromagnetic wave absorption layer 7 are thin films having a uniform plane even if they have voids. Means.

電磁波吸収層７は、金属、金属酸化物、金属窒化物ないしはこれらの混合物をイオンプレーティング、蒸着、スパッタリング、塗布等により作成し、また前記金属、金属酸化物、金属窒化物は、銀、ＩＴＯ（酸化インジウム／酸化錫）、酸化錫、酸化亜鉛、窒化チタン等からなる抵抗皮膜１２を含むものであれば特に限定されるものではないが、上述の如き合成樹脂等からなる板状体、又はフィルム等の誘電体である透明基板１若しくは表面保護板８に電磁波吸収層７を被着させて形成すればその形状を保持する上で好ましい。   The electromagnetic wave absorption layer 7 is made of metal, metal oxide, metal nitride or a mixture thereof by ion plating, vapor deposition, sputtering, coating, etc., and the metal, metal oxide, metal nitride is made of silver, ITO Although not particularly limited as long as it includes the resistance film 12 made of (indium oxide / tin oxide), tin oxide, zinc oxide, titanium nitride, or the like, or a plate-like body made of a synthetic resin as described above, or Forming the electromagnetic wave absorbing layer 7 on the transparent substrate 1 or the surface protection plate 8 which is a dielectric material such as a film is preferable for maintaining the shape.

図２は、本発明に係わる色素増感型太陽電池の、第二の実施形態を示す断面図である。色素増感型太陽電池１０は、太陽光到来側αより透明基板１から裏面基板６までは第二の実施形態と同様に積層されているが、電磁波吸収層７は裏面基板６の太陽光到来側と反対側βに設けられ、更に電磁波吸収層７の外面に表面保護板８が設けられている。かかる構成により、太陽光到来側と反対側βから到来する電磁波が減衰され、電磁波による悪影響の発生が防止される。ここで太陽光到来側と反対側βから到来する電磁波に対して、表面保護板８、電磁波吸収層７、裏面基板６及び導電性層５は、第一の実施形態における表面保護板８、電磁波吸収層７、透明基板１及び透明導電性層２と同様の構成となることから各々についての説明は省略する。   FIG. 2 is a cross-sectional view showing a second embodiment of the dye-sensitized solar cell according to the present invention. The dye-sensitized solar cell 10 is laminated in the same manner as in the second embodiment from the transparent substrate 1 to the back substrate 6 from the sunlight arrival side α, but the electromagnetic wave absorption layer 7 is exposed to sunlight from the back substrate 6. The surface protection plate 8 is provided on the outer surface of the electromagnetic wave absorption layer 7. With such a configuration, the electromagnetic wave arriving from the side β opposite to the sunlight arrival side is attenuated, and an adverse effect due to the electromagnetic wave is prevented. Here, the surface protection plate 8, the electromagnetic wave absorption layer 7, the back substrate 6, and the conductive layer 5 are the same as those of the surface protection plate 8, the electromagnetic wave in the first embodiment, with respect to electromagnetic waves arriving from the opposite side β from the sunlight arrival side. Since it becomes the structure similar to the absorption layer 7, the transparent substrate 1, and the transparent conductive layer 2, description about each is abbreviate | omitted.

本実施形態において、色素増感型太陽電池１０の厚み方向の透光性が必要とされない場合には、第一の実施形態と異なり裏面基板６、導電性層５、電磁波吸収層７及び表面保護板８に透明な材料を用いる必要がなく、電磁波を吸収する機能を損なわない範囲で用いる材料の自由度を高めることができる。   In the present embodiment, when the translucency in the thickness direction of the dye-sensitized solar cell 10 is not required, unlike the first embodiment, the back substrate 6, the conductive layer 5, the electromagnetic wave absorption layer 7, and the surface protection. It is not necessary to use a transparent material for the plate 8, and the degree of freedom of the material used within a range that does not impair the function of absorbing electromagnetic waves can be increased.

また、透明基板１又は裏面基板６のいずれか一方のみに電磁波吸収層７を設けて一方から到来する電磁波を吸収するようにしてもよいが、透明基板１の太陽光到来側α及び裏面基板６の太陽光到来側と反対側βの双方に電磁波吸収層７を設けて、両面から到来する電磁波を吸収できるようにすることもできる。   Further, the electromagnetic wave absorbing layer 7 may be provided only on either the transparent substrate 1 or the back substrate 6 to absorb electromagnetic waves coming from one, but the sunlight arrival side α and the back substrate 6 of the transparent substrate 1 may be used. It is also possible to provide an electromagnetic wave absorption layer 7 on both the solar light arrival side and the opposite side β so that electromagnetic waves coming from both sides can be absorbed.

本発明における色素増感型太陽電池１０において、電磁波吸収層７及び表面保護板８以外を形成する材料については特に限定されるものではなく一般的なものや公知のものを適宜用いることができる。例えば透明基板１及び裏面基板６については透明性の高いガラス、強化ガラスや、ポリカーボネート樹脂や、アクリル樹脂、ポリアリレート樹脂、ポリメタクリレート、ポリ塩化ビニル等の透明性の高い合成樹脂等を好適に用いることができる。また電解質層４に対する耐久性の高いポリエチレンテレフタレート樹脂に加え、ポリブチレンテレフタレート樹脂、ポリエチレンナフタレート樹脂といったポリエステル合成樹脂、ポリエチレン、ポリプロピレン、環状ポリオレフィン樹脂といったポリオレフィン系合成樹脂等も好適に用いることができる。更に裏面電極６については透明性が必要とされない場合には適宜の材料を用いて形成することができる。   In the dye-sensitized solar cell 10 according to the present invention, materials other than the electromagnetic wave absorption layer 7 and the surface protection plate 8 are not particularly limited, and general and known materials can be appropriately used. For example, for the transparent substrate 1 and the back substrate 6, highly transparent glass, tempered glass, polycarbonate resin, highly transparent synthetic resin such as acrylic resin, polyarylate resin, polymethacrylate, polyvinyl chloride, or the like is preferably used. be able to. In addition to highly durable polyethylene terephthalate resin for the electrolyte layer 4, polyester synthetic resins such as polybutylene terephthalate resin and polyethylene naphthalate resin, and polyolefin-based synthetic resins such as polyethylene, polypropylene, and cyclic polyolefin resins can also be suitably used. Further, the back electrode 6 can be formed using an appropriate material when transparency is not required.

透明導電性層２については、上述のＩＴＯ（酸化インジウム／酸化錫）やＦＴＯ（フッ素ドープ酸化錫）等、導電性層５については透明導電性層２との電位差を生じさせるために白金、カーボン、導電性ポリマーや、ＩＴＯ等の金属酸化物と前記物質との複合材料等を用い、これらを真空蒸着法、スパッタ蒸着法、イオンプレーティング法、ＣＶＤ法、泳動電着法等の適宜の方法により形成することで上述の導電性被膜が設けられる。   For the transparent conductive layer 2, the above-mentioned ITO (indium oxide / tin oxide), FTO (fluorine-doped tin oxide), etc., platinum, carbon, etc. are used for the conductive layer 5 to cause a potential difference with the transparent conductive layer 2. , Conductive polymers, composite materials of the above-mentioned substances such as ITO and metal oxides, etc., and appropriate methods such as vacuum deposition, sputter deposition, ion plating, CVD, electrophoretic deposition, etc. The above-mentioned conductive film is provided by forming by.

酸化物半導体層３については、例えばチタニア粉末等の酸化物半導体をポリエチレングリコール、アセチルアセトン等によりペースト状にして透明基板１に塗布し、透明基板１の材料がガラスであれば４００〜５００度、合成樹脂であれば１００〜１２０度で焼き付けを行った後、Ｃｉｓ−ｄｉｔｈｉｏｃｙａｎａｔｅ［Ｎ−ｂｉｓ（２，２‘−ｂｉｐｙｒｉｄｙｌ４，４’−ｄｉｃａｒｂｏｘｙｌｉｃ ａｃｉｄ）］Ｒｕ［二価］等のルテニウム錯体、又はポリフィリン系、シアニン系等の色素、クチナシ色素、スイカズラ色素等のカロテノイド系の色素、クマリン３４３といった色素等の増感色素を担持させて形成できる。また電解質層３４は、電解質を含むものであれば特に限定されるものではないが液体又は擬液体状のものが好ましく、例えばアセトニトリルとエチレンカーボネートの混合溶液や、メトキシプロピオニトリル等の溶媒に、ヨウ化リチウム、金属ヨウ素等の電解質を加えたもの等を用いることができる。   For the oxide semiconductor layer 3, for example, an oxide semiconductor such as titania powder is applied in a paste form with polyethylene glycol, acetylacetone, etc., and applied to the transparent substrate 1. If the material of the transparent substrate 1 is glass, it is synthesized at 400 to 500 degrees. In the case of a resin, after baking at 100 to 120 ° C., a ruthenium complex such as Cis-dithiocynate [N-bis (2,2′-bipyridyl4,4′-dicarboxylic acid)] Ru [divalent], or a porphyrin type It can be formed by supporting a sensitizing dye such as a cyanine dye, a carotenoid dye such as gardenia dye or honeysuckle dye, or a dye such as coumarin 343. The electrolyte layer 34 is not particularly limited as long as it contains an electrolyte, but is preferably a liquid or quasi-liquid one. For example, a mixed solution of acetonitrile and ethylene carbonate, a solvent such as methoxypropionitrile, What added electrolytes, such as lithium iodide and metal iodine, can be used.

図３は、本発明に係わる色素増感型太陽電池の、適用の一例を示す説明図である。本図において、色素増感型太陽電池１０は上記第二の実施形態に示されるもので、厚み方向に高い透明性を有することでオフィスＦの窓として用いられているものであり、太陽光到来側αからは太陽Ｓからの太陽光Ｓ１が到来して電力が生起されると共に、太陽光到来側と反対側から到来するオフィスＦ内のパソコンＰから発せられる無線ＬＡＮに係わる電磁波Ｒが色素増感型太陽電池１０により減衰されて反射が抑制されるようになされているものである。窓以外に放射された電磁波Ｒは壁面Ｗにより外部への漏洩が防止されるが、窓の部分については色素増感型太陽電池１０により電磁波Ｒが吸収されて無線ＬＡＮオフィスＦ外への情報の漏洩が防止されると共に、オフィスＦ内への電磁波Ｒの反射による通信環境の悪化や人体への悪影響を軽減することができる。   FIG. 3 is an explanatory view showing an example of application of the dye-sensitized solar cell according to the present invention. In this figure, the dye-sensitized solar cell 10 is shown in the second embodiment, and is used as a window of the office F by having high transparency in the thickness direction. From the side α, sunlight S1 from the sun S arrives and power is generated, and the electromagnetic wave R related to the wireless LAN emitted from the personal computer P in the office F arriving from the opposite side of the sunlight arrival side is increased in dye. The reflection is suppressed by being attenuated by the sensitive solar cell 10. The electromagnetic wave R radiated to other than the window is prevented from leaking to the outside by the wall surface W, but the electromagnetic wave R is absorbed by the dye-sensitized solar cell 10 in the window portion, and information outside the wireless LAN office F is transmitted. Leakage can be prevented, and deterioration of the communication environment and adverse effects on the human body due to reflection of the electromagnetic wave R into the office F can be reduced.

図４は、本発明に係わる色素増感型太陽電池の、適用の他の例を示す一部断面図である。本図は色素増感型太陽電池１０を用いて形成した透光性の防音パネルＴを示すもので、色素増感型太陽電池１０の周囲に枠体Ｔ１が枠組みされ且つ色素増感型太陽電池１０の周囲が枠体Ｔ１内に嵌入されることで形成されたものである。枠体Ｔ１はアルミニウム押出形材から形成されたもので、電磁波到来側の枠体Ｔ１外面には別途電磁波吸収体Ｂが取り付けられている。   FIG. 4 is a partial cross-sectional view showing another example of application of the dye-sensitized solar cell according to the present invention. This figure shows a light-transmitting soundproof panel T formed using a dye-sensitized solar cell 10, and a frame T1 is framed around the dye-sensitized solar cell 10 and the dye-sensitized solar cell. 10 is formed by being inserted into the frame T1. The frame T1 is formed of an aluminum extruded profile, and an electromagnetic wave absorber B is separately attached to the outer surface of the electromagnetic wave arrival side frame T1.

図４に示した防音パネルＴは、例えば図５に示す如く用いられる。図５は、高架道路Ｋ上を走行する車両Ｃ１に対して、路側に設けられたアンテナＡから発せられる電磁波Ｒ１を車両Ｃ１に搭載された車載器Ｓ１が受信することで、車両Ｃ１の自動料金収受や走行支援等が行われるＤＳＲＣ（狭域通信）を備えた高架道路Ｋを示すものである。高架道路Ｋを含め、道路周辺に設置される防音壁は、大面積を有することで高効率の太陽光発電を行うのに適する条件を備えており色素増感型太陽電池１０の設置の利点は大きく得られるが、かかるＤＳＲＣを備えた道路においては、アンテナＡから発せられた電磁波Ｒ１が対象となる車両Ｃ１の車載器Ｓ１のみならず、高架道路Ｋ下を走行している等の対象外の車両Ｃ２の車載器Ｓ２により受信され、料金の誤収受やシステムの誤動作に繋がる恐れがある。高架道路Ｋの側縁に沿って防音パネルＴを用いた防音壁を設置しておくことで、防音パネルＴの色素増感太陽電池１０により不要な電磁波が抑制され、上述の誤収受や誤動作の発生の恐れを小さくすることができる。   The soundproof panel T shown in FIG. 4 is used, for example, as shown in FIG. FIG. 5 shows an automatic fee of the vehicle C1 when the vehicle-mounted device S1 mounted on the vehicle C1 receives the electromagnetic wave R1 emitted from the antenna A provided on the roadside with respect to the vehicle C1 traveling on the elevated road K. The figure shows an elevated road K equipped with DSRC (narrow area communication) for receiving and driving support. The sound barriers installed around the road, including the elevated road K, have conditions suitable for performing high-efficiency solar power generation by having a large area, and the advantages of installing the dye-sensitized solar cell 10 are Although greatly obtained, on roads with such DSRC, the electromagnetic wave R1 emitted from the antenna A is not subject to not only the on-vehicle device S1 of the target vehicle C1 but also traveling under the elevated road K. It may be received by the vehicle-mounted device S2 of the vehicle C2 and may lead to erroneous fee collection or system malfunction. By installing a soundproof wall using the soundproof panel T along the side edge of the elevated road K, unnecessary electromagnetic waves are suppressed by the dye-sensitized solar cell 10 of the soundproof panel T, and the above-described erroneous receipt and malfunction are prevented. The risk of occurrence can be reduced.

図６は、本発明に係わる色素増感型太陽電池の、更に他の例を示す説明図である。本図は、複数のＥＴＣ（自動料金収受システム）レーンが並設された有料道路の料金所を示すもので、料金収受に係わる電磁波Ｒ２を放射するアンテナＡがレーンＬ毎に設けられ、電磁波Ｒ２が車両に反射して隣接するレーンＬに到来する恐れのあるレーンＬ間に色素増感型太陽電池１０を用いた仕切壁が立設されている。かかる仕切壁に本発明に係わる色素増感型太陽電池１０を用いることで、大面積による高効率の発電と共に、電磁波Ｒ２の反射による料金の誤収受等の悪影響を排除することができる。   FIG. 6 is an explanatory view showing still another example of the dye-sensitized solar cell according to the present invention. This figure shows a toll gate on a toll road in which a plurality of ETC (automatic toll collection system) lanes are arranged side by side. An antenna A that radiates electromagnetic waves R2 related to toll collection is provided for each lane L, and electromagnetic waves R2 A partition wall using the dye-sensitized solar cell 10 is erected between the lanes L that may be reflected by the vehicle and arrive at the adjacent lanes L. By using the dye-sensitized solar cell 10 according to the present invention for such a partition wall, high-efficiency power generation with a large area and adverse effects such as erroneous receipt of charges due to reflection of the electromagnetic wave R2 can be eliminated.

更に料金所の屋根Ｙについても本発明に係わる色素増感型太陽電池１０を適用することができる。屋根Ｙ面に適用することで、発電効率が極めて高く得られると共に、下面で電磁波の吸収を行うようにしておくことで、料金所周辺の電磁波が屋根Ｙに反射して悪影響が発生するのを防止することができる。   Further, the dye-sensitized solar cell 10 according to the present invention can also be applied to the roof Y of the toll gate. By applying it to the Y surface of the roof, power generation efficiency can be obtained extremely high, and by absorbing the electromagnetic waves on the lower surface, the electromagnetic waves around the toll gate are reflected on the roof Y, causing adverse effects. Can be prevented.

本発明に係わる色素増感型太陽電池の、第一の実施形態を示す断面図である。It is sectional drawing which shows 1st embodiment of the dye-sensitized solar cell concerning this invention. 本発明に係わる色素増感型太陽電池の、第二の実施形態を示す断面図である。It is sectional drawing which shows 2nd embodiment of the dye-sensitized solar cell concerning this invention. 本発明に係わる色素増感型太陽電池の、適用の一例を示す説明図である。It is explanatory drawing which shows an example of application of the dye-sensitized solar cell concerning this invention. 本発明に係わる色素増感型太陽電池の、適用の他の例を示す説明図である。It is explanatory drawing which shows the other example of application of the dye-sensitized solar cell concerning this invention. 図５に示した防音パネルの適用の一例を示す説明図である。It is explanatory drawing which shows an example of application of the soundproof panel shown in FIG. 本発明に係わる色素増感型太陽電池の、適用の更に他の例を示す説明図である。It is explanatory drawing which shows the further another example of application of the dye-sensitized solar cell concerning this invention.

符号の説明Explanation of symbols

１ 透明基板
２ 透明導電性層
３ 酸化物半導体層
４ 電解質層
５ 導電性層
６ 裏面基板
７ 電磁波吸収層
１０ 色素増感型太陽電池
Ｒ 電磁波
Ｓ１ 太陽光
α 太陽光到来側
β 太陽光到来側と反対側 DESCRIPTION OF SYMBOLS 1 Transparent substrate 2 Transparent conductive layer 3 Oxide semiconductor layer 4 Electrolyte layer 5 Conductive layer 6 Back substrate 7 Electromagnetic wave absorption layer 10 Dye-sensitized solar cell R Electromagnetic wave S1 Sunlight α Sunlight arrival side β Sunlight arrival side Opposite side

Claims (2)

太陽光到来側から順に透明基板、透明導電性層、色素が導入された酸化物半導体層、電解質層、導電性層及び裏面基板が積層されて形成され、前記透明基板の太陽光到来側及び／又は前記裏面基板の太陽光到来側と反対側に電磁波吸収層が設けられると共に、該電磁波吸収層が設けられた前記透明基板及び／又は裏面基板が電磁波を透過する材料からなることを特徴とする色素増感型太陽電池。 A transparent substrate, a transparent conductive layer, an oxide semiconductor layer into which a dye is introduced, an electrolyte layer, a conductive layer, and a back substrate are laminated in order from the sunlight arrival side, and the sunlight arrival side of the transparent substrate and / or Alternatively, an electromagnetic wave absorption layer is provided on the side opposite to the sunlight arrival side of the back substrate, and the transparent substrate and / or the back substrate on which the electromagnetic wave absorption layer is provided is made of a material that transmits electromagnetic waves. Dye-sensitized solar cell. 前記電磁波吸収層が設けられた前記透明基板及び／又は裏面基板は、主として吸収の対象となる電磁波が、該透明基板及び／又は裏面基板を透過する際の波長の四分の一の厚みとなされていることを特徴とする請求項１に記載の色素増感型太陽電池。 The transparent substrate and / or the back substrate provided with the electromagnetic wave absorbing layer has a thickness that is a quarter of the wavelength when the electromagnetic wave to be absorbed mainly passes through the transparent substrate and / or the back substrate. The dye-sensitized solar cell according to claim 1, wherein
JP2005002083A 2005-01-07 2005-01-07 Dye-sensitized solar cell Pending JP2006190585A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008136765A (en) * 2006-12-05 2008-06-19 Sekisui Jushi Co Ltd Model airplane
WO2009139458A1 (en) 2008-05-16 2009-11-19 富士フイルム株式会社 Conductive film, and transparent heating element
WO2009142150A1 (en) 2008-05-19 2009-11-26 富士フイルム株式会社 Conductive film and transparent heating element
JP2011143096A (en) * 2009-12-14 2011-07-28 Yokohama Rubber Co Ltd:The Ball for ball game
CN109121376A (en) * 2018-10-10 2019-01-01 深圳市友华通信技术有限公司 Electronic equipment anti-interference method and Anti-interference electronic equipment

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2002134178A (en) * 2000-10-23 2002-05-10 Catalysts & Chem Ind Co Ltd Photoelectric cell

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002134178A (en) * 2000-10-23 2002-05-10 Catalysts & Chem Ind Co Ltd Photoelectric cell

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008136765A (en) * 2006-12-05 2008-06-19 Sekisui Jushi Co Ltd Model airplane
WO2009139458A1 (en) 2008-05-16 2009-11-19 富士フイルム株式会社 Conductive film, and transparent heating element
US9095010B2 (en) 2008-05-16 2015-07-28 Fujifilm Corporation Conductive film, and transparent heating element
WO2009142150A1 (en) 2008-05-19 2009-11-26 富士フイルム株式会社 Conductive film and transparent heating element
US8937268B2 (en) 2008-05-19 2015-01-20 Fujifilm Corporation Conductive film and transparent heating element
JP2011143096A (en) * 2009-12-14 2011-07-28 Yokohama Rubber Co Ltd:The Ball for ball game
CN109121376A (en) * 2018-10-10 2019-01-01 深圳市友华通信技术有限公司 Electronic equipment anti-interference method and Anti-interference electronic equipment

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