JPS6333872A - Solar cell - Google Patents
Solar cellInfo
- Publication number
- JPS6333872A JPS6333872A JP61177976A JP17797686A JPS6333872A JP S6333872 A JPS6333872 A JP S6333872A JP 61177976 A JP61177976 A JP 61177976A JP 17797686 A JP17797686 A JP 17797686A JP S6333872 A JPS6333872 A JP S6333872A
- Authority
- JP
- Japan
- Prior art keywords
- film
- solar cell
- efficiency
- wavelengths
- wavelength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 abstract description 8
- 238000002310 reflectometry Methods 0.000 abstract 2
- 238000004040 coloring Methods 0.000 abstract 1
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 9
- 229910021417 amorphous silicon Inorganic materials 0.000 description 6
- 239000003086 colorant Substances 0.000 description 5
- 229910021419 crystalline silicon Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 241000238413 Octopus Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は太陽電池の保護膜に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a protective film for solar cells.
アモルファス・シリコンまたＨ、 結晶系シリコンを用
い、電極にＩＴＯを有する太陽電池において、ＩＴＯ膜
の上に付ける保護膜を、狭帯域の波長のみを反射する、
耐候性のめる安定した膜にすることにより、太陽電池の
ＩＴＯ膜の保護を行なうと同時に、太陽電池に各種の鮮
明な色を付けるようにしｔものである。In solar cells that use amorphous silicon or crystalline silicon and have ITO on the electrodes, a protective film placed on top of the ITO film reflects only a narrow band of wavelengths.
By creating a stable film with improved weather resistance, it is possible to protect the ITO film of the solar cell and at the same time add various vivid colors to the solar cell.
従来の太陽電池は、ＩＴＯ膜の上にニトロセルロースな
どの透明な膜を付けることによって、保護されていた。Conventional solar cells are protected by applying a transparent film such as nitrocellulose over the ITO film.
しかし、保護膜が透明であるため、シリコンなどの色が
その１ま見え、色は黒か茶色しかなく、デザイン的にも
色の自由度がないという問題点を有する。However, since the protective film is transparent, the color of the silicone etc. is visible, and the only colors available are black or brown, which poses a problem in that there is no freedom in color design.
そこで、本発明は、このような問題点を解決するもので
、保護膜を、屈折率の異なる交互層で作ることによって
、狭帯域の波長だけ反射する膜にし、波長に対する反射
率のピークを鋭くしであるため太陽電池のキャリア収集
効率の良い波長の透過損失を最少限におさえることがで
き、太陽電池の効率をあ１り落ざず、各種の鮮明な色を
付けることができ、また安定した強い膜で構成しである
定め、保護層としての役目も果たす。The present invention solves these problems by making a protective film with alternating layers with different refractive indexes to create a film that reflects only a narrow band of wavelengths, thereby sharpening the peak of reflectance for each wavelength. Because of this, it is possible to minimize the transmission loss of wavelengths that have good carrier collection efficiency in solar cells, and it is possible to add various vivid colors without compromising the efficiency of solar cells, and it is also stable. It is made up of a strong film that also acts as a protective layer.
本発明の太陽電池に、光エネルギーを電気エネルギーに
変換する素子を用い電極に透明導伝膜（ＩＴＯ）を有す
る太陽電池において、ＩＴＯ膜の上に付ける保護膜に、
狭帯域の波長のみを反射でる膜を有することを特徴とす
る。In the solar cell of the present invention, which uses an element that converts light energy into electrical energy and has a transparent conductive film (ITO) on the electrode, the protective film applied on the ITO film includes:
It is characterized by having a film that reflects only a narrow band of wavelengths.
第３図の７に太陽の幅対エネルギーの波長に対するカー
ブを示す。′！たこｎに対するアモルファス・シリコン
太陽電池と、結晶系シリコン太陽電池のキャリア収集効
率をそれぞれ第５図の８．９に示す。これに見らｎ、る
ように太陽電池のキャリア収集効率は波長に対（２て一
定で汀なく収集効率ニピークをもつ。効率のよい、波長
５００ （ｎｍ）〜６００（ｎｍ）の帯域を無反射にし
ておけば他の波長域が全反射であっても、太陽電池とし
ての効率は著しくけ落ちず実用範囲である。１を膜の波
長に対する反射率のピークを鋭くしておけば、波長帯域
５００（ｎｍ） 〜６００（ｎｍ）の間でも効率を落す
ことなくかつ、反射率のピークが鋭いために鮮明な色を
付けることができる。7 in Figure 3 shows the curve of the sun's width vs. energy versus wavelength. ′! The carrier collection efficiencies of the amorphous silicon solar cell and the crystalline silicon solar cell with respect to octopus n are shown in 8.9 of FIG. 5, respectively. As can be seen from this figure, the carrier collection efficiency of a solar cell is constant with respect to wavelength (2), and has two peaks in collection efficiency. If it is set to reflection, even if other wavelength ranges are total reflection, the efficiency as a solar cell will not drop significantly and remain within the practical range.If the peak of the reflectance for the wavelength of the film is made sharp, Even in the band of 500 (nm) to 600 (nm), it is possible to provide vivid colors without reducing efficiency and because the reflectance peak is sharp.
第１図は、本発明の一実施例における膜構成図であって
、１２層構造で、屈折率の高いものと低いものとの交互
層である。最初の層１は、屈折率１７４のＹ、０．を用
い、層２に、屈折率１．４５のＳｔｏｗを用いｔ交互層
の構成を持つ嗅である。層の厚坏は、屈折率の高い層が
、波長単位で、λ（λ：波長、λ＝ ａ ｏ ｏ ｎｍ
） ｓ 屈折率の低い層が波長単位でτλである。FIG. 1 is a film configuration diagram in one embodiment of the present invention, which has a 12-layer structure, with alternating layers of high refractive index and low refractive index. The first layer 1 is Y with a refractive index of 174, 0. In this case, Stow with a refractive index of 1.45 is used for layer 2 and has a structure of alternating layers. The layer thickness is such that a layer with a high refractive index has a thickness of λ (λ: wavelength, λ = ao o nm
) s The layer with a low refractive index is τλ in wavelength units.
第２図に波長に対する反射率を示す。第３図には、アモ
ルファス・シリコン太陽電池と結晶系シリコン太陽電池
のキャリア収集幼木と太陽輻射エネルギーを波長に対し
２て示す。Figure 2 shows the reflectance versus wavelength. FIG. 3 shows the carrier collection seedlings and solar radiant energy of an amorphous silicon solar cell and a crystalline silicon solar cell versus wavelength.
第２図と第３図を較べて見ると、波長に対する反射率の
ピークが鋭い定めに太陽の幅対エネルギーを含め之太陽
電池の効率のよい所は、この膜ではほとんど透過するよ
う設計がなされている。また、５ｉ０２などの安定しｔ
膜で構成きれているため、保護層としても十分効果があ
る。Comparing Figures 2 and 3, we can see that this film is designed to transmit almost all of the solar cells' efficiency, including the sun's width versus energy, where the peak of reflectance for each wavelength is sharp. ing. In addition, stable t such as 5i02
Since it is composed of a film, it is also sufficiently effective as a protective layer.
また、この膜では設計波長を４ｏ ｏ ｎｍにして青色
を出し念が、波長を変えることにより、種々の鮮明な色
にすることができる。In addition, this film is designed to have a design wavelength of 40 nm to produce a blue color, but by changing the wavelength, various vivid colors can be produced.
以上述べ几ように本発明によれば、ＩＴＯ上に付ける保
護膜に、狭帯域の波長のみを反射する膜を付けることに
より、ＩＴＯ膜の保護をすると同時に、太陽電池の効率
をほとんど落さずに色を着けることができるという効果
を有する。As described above, according to the present invention, by attaching a film that reflects only a narrow band of wavelengths to the protective film on the ITO, the ITO film can be protected and at the same time the efficiency of the solar cell is hardly reduced. It has the effect of being able to add color to.
第１図は本発明の膜の構成図。
１・・・・・・屈折率１．７４ 膜厚７λ（λ：４００
ｎｍ）２・・・・・・屈折率１４４５ 膜厚τλ１１・
・・・・・屈折率１．７４ 膜厚７λ１２・・・・・・
屈折率１．４５ 膜厚τλ１５・・・・・・ＩＴＯ膜
１４・・・・・・アモルファス・シリコン太陽電池第２
図は、本発明の膜の波長に対する反射率を示す図。
第６図に、アモルファス・シリコン太陽電池及び、結晶
系シリコン太陽電池のキャリア収集効率と、太陽輻射エ
ネルギーを波長に対して示す図。
７・・・・・・太陽の幅対エネルギー
８・・・・・・アモルファス噌シリコン太陽電池９・・
・・・・結晶系シリコン太陽電池以上
出願人 セイコーエプソン株式会社
１、尼オ牟／、７４
７八・５
γし６
第１図
８２１匁FIG. 1 is a diagram showing the structure of the membrane of the present invention. 1...Refractive index 1.74 Film thickness 7λ (λ: 400
nm) 2...Refractive index 1445 Film thickness τλ11・
...Refractive index 1.74 Film thickness 7λ12...
Refractive index 1.45 Film thickness τλ15...ITO film 14...Amorphous silicon solar cell 2nd
The figure is a diagram showing the reflectance of the film of the present invention with respect to wavelength. FIG. 6 is a diagram showing carrier collection efficiency of amorphous silicon solar cells and crystalline silicon solar cells and solar radiant energy versus wavelength. 7... Sun's width versus energy 8... Amorphous silicon solar cell 9...
...Crystalline silicon solar cell and above Applicant: Seiko Epson Corporation 1, Ama Omu/, 74 78.5 γshi 6 Figure 1 821 momme
Claims (1)
に透明導伝膜（ＩＴＯ）を有する太陽電池において、Ｉ
ＴＯ膜上に少なくとも１層以上の誘電体膜を有すること
を特徴とする太陽電池。I
A solar cell characterized by having at least one dielectric film on a TO film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61177976A JPS6333872A (en) | 1986-07-29 | 1986-07-29 | Solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61177976A JPS6333872A (en) | 1986-07-29 | 1986-07-29 | Solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333872A true JPS6333872A (en) | 1988-02-13 |
Family
ID=16040364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61177976A Pending JPS6333872A (en) | 1986-07-29 | 1986-07-29 | Solar cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333872A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0637343A (en) * | 1992-07-15 | 1994-02-10 | Oome Kosumosu Denki Kk | Solar cell device |
| JP2001217444A (en) * | 1999-12-27 | 2001-08-10 | Asulab Sa | Photocell having colored appearance especially for watch dial |
| US7999177B2 (en) | 2005-05-02 | 2011-08-16 | Japan Aerospace Exploration Agency | Optical thin film for solar cells and method of forming the same |
| CN109597152A (en) * | 2017-09-30 | 2019-04-09 | 张家港康得新光电材料有限公司 | Narrowband reflection film |
-
1986
- 1986-07-29 JP JP61177976A patent/JPS6333872A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0637343A (en) * | 1992-07-15 | 1994-02-10 | Oome Kosumosu Denki Kk | Solar cell device |
| JP2001217444A (en) * | 1999-12-27 | 2001-08-10 | Asulab Sa | Photocell having colored appearance especially for watch dial |
| US7999177B2 (en) | 2005-05-02 | 2011-08-16 | Japan Aerospace Exploration Agency | Optical thin film for solar cells and method of forming the same |
| CN109597152A (en) * | 2017-09-30 | 2019-04-09 | 张家港康得新光电材料有限公司 | Narrowband reflection film |
| CN109597152B (en) * | 2017-09-30 | 2021-05-11 | 张家港康得新光电材料有限公司 | Narrow-band reflective film |
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