JP2001007377A - Solar cell module having film of fluorescent substance formed on light receiving face - Google Patents
Solar cell module having film of fluorescent substance formed on light receiving faceInfo
- Publication number
- JP2001007377A JP2001007377A JP11215711A JP21571199A JP2001007377A JP 2001007377 A JP2001007377 A JP 2001007377A JP 11215711 A JP11215711 A JP 11215711A JP 21571199 A JP21571199 A JP 21571199A JP 2001007377 A JP2001007377 A JP 2001007377A
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- light
- fluorescent substance
- cell module
- light receiving
- 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
- 239000000126 substance Substances 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 abstract description 12
- 239000003086 colorant Substances 0.000 abstract description 11
- 239000000945 filler Substances 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 230000031700 light absorption Effects 0.000 abstract description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229920005591 polysilicon Polymers 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000000695 excitation spectrum Methods 0.000 description 3
- 238000002189 fluorescence spectrum Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 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
Landscapes
- Photovoltaic Devices (AREA)
- Hybrid Cells (AREA)
Abstract
Description
【０００１］】[0001]
【産業上の利用分野】本発明は、太陽電池モジュールの
受光面上に蛍光物質の膜を形成することによる太陽電池
モジュールの改良に関し、さらに詳しくは、蛍光物質の
吸収による反射防止、蛍光の放射にともなう光の波長変
換による表面保護材および充填材中での光の吸収の抑制
による太陽電池のエネルギー変換効率の増大をはかる方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a solar cell module by forming a film of a fluorescent substance on a light receiving surface of the solar cell module, and more particularly, to an anti-reflection and an emission of fluorescent light by absorption of the fluorescent substance. The present invention relates to a method for increasing the energy conversion efficiency of a solar cell by suppressing the absorption of light in a surface protective material and a filler by wavelength conversion of light accompanying the method.
【０００２】[0002]
【従来の技術】表面保護材中での吸収を抑制し太陽電池
のエネルギー変換効率の増大をはかる方法として、太陽
電池のエネルギー変換に有効な光の吸収の少ない、ほう
珪酸ガラスや石英ガラスを表面保護材として用いる方法
が提案されている。しかし、ＥＶＡを始めとする充填材
での光の吸収を抑える有効な方法はない。2. Description of the Related Art As a method of suppressing the absorption in a surface protective material and increasing the energy conversion efficiency of a solar cell, a borosilicate glass or a quartz glass having a small light absorption effective for energy conversion of a solar cell is used. A method of using as a protective material has been proposed. However, there is no effective method for suppressing light absorption by the filler such as EVA.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、太陽電池モ
ジュールの受光面上に蛍光物質の膜を形成することによ
り、太陽電池のエネルギー変換に有効な入射光の、受光
面での反射および表面保護材と充填材内部での吸収によ
る損失を抑制し、太陽電池のエネルギー変換効率の増大
をはかる方法の提供にある。SUMMARY OF THE INVENTION The present invention relates to a method of forming a film of a fluorescent substance on a light-receiving surface of a solar cell module to reflect incident light effective for energy conversion of the solar cell on the light-receiving surface and to reduce the surface light. It is an object of the present invention to provide a method for suppressing a loss due to absorption inside a protective material and a filler and increasing the energy conversion efficiency of a solar cell.
【０００４】[0004]
【課題を解決するための手段】太陽電池モジュールの受
光面上に蛍光物質の膜を形成し、蛍光物質が短波長光を
励起光として吸収し長波長の蛍光として放射する波長変
換により、太陽電池のエネルギー変換に有効な入射光
の、受光面での反射および表面保護材と充填材内部での
吸収による損失を抑制し、太陽電池のエネルギー変換効
率の増大をはかることを特徴とする方法。。Means for Solving the Problems A solar cell is formed by forming a film of a fluorescent substance on a light receiving surface of a solar cell module, and the fluorescent substance absorbs short-wavelength light as excitation light and emits it as long-wavelength fluorescence. A method of suppressing the loss of incident light effective for energy conversion of light due to reflection on a light receiving surface and absorption inside a surface protective material and a filler, thereby increasing the energy conversion efficiency of a solar cell. .
【０００５】[0005]
【作用】受光面上に蛍光物質の膜を形成した太陽電池モ
ジュールは従来の太陽電池モジュールとまったく同様に
設置し作動させることができる。The solar cell module having the fluorescent substance film formed on the light receiving surface can be installed and operated just like a conventional solar cell module.
【０００６】[0006]
【実施例】以下、本発明の実施例について説明する。蛍
光物質として蛍光着色剤（ＭＰＩ−５０５Ｃ）を用い
た。図１に蛍光分光光度計により測定した蛍光着色剤の
励起スペクトルと蛍光スペクトルを示す。波長４００ｎ
ｍを中心とする光により励起され、波長５００ｎｍを中
心とする蛍光を放射している。図２に分光光度計により
求めた蛍光着色剤の吸収係数を示す。励起スペクトルと
ほぼ一致することがわかる。４０×４０ｍｍ２の太陽電
池モジュールは、図３に示すように、２０×２０ｍｍ２
のｎ＋ｐｐ＋型多結晶シリコン太陽電池（エネルギーギ
ャップ１．１ｅＶ）、厚さ０．７ｍｍのＥＶＡ充填材、
表面保護材としての厚さ３．２ｍｍのソーダガラス、お
よび、バックシートから構成されている。蛍光着色剤は
モジュールの保護ガラス上に塗布した。図４に分光光度
計の積分球反射測定により求めた太陽電池モジュールの
表面反射率を示す。蛍光着色剤の塗布により反射率が減
少していることがわかる。とくに５００ｎｍ以下の波長
の光が蛍光の励起光として吸収されるため低下が著し
い。すなわち、蛍光物質が短波長光を励起光として吸収
し長波長の蛍光として放射する波長変換により、太陽電
池のエネルギー変換に有効な入射光の、受光面での反射
および４００ｎｍ以下の波長の光の表面保護材と充填材
内部での吸収による損失を抑制する効果が期待される。
光源として５００Ｗのキセノンランプを用い、ポテンシ
ョスタットを用いて電流−電圧特性を求めた。入射光強
度７９．４ｍＪｓ−１ｃｍ−２はパワーメーターを用い
て測定した。第１表に蛍光着色剤を３０μｍの膜厚で塗
布した太陽電池の特性値とエネルギー変換効率を塗布し
ていないもの（比較例１）とともに示す。蛍光着色剤の
塗布により６％のエネルギー変換効率の上昇が認められ
る。 以上本発明につき好適な実施例を挙げて種々説明した
が、本発明はこの実施例に限定されるものではなく、発
明の精神を逸脱しない範囲内で多くの改変を施し得るの
はもちろんのことである。Embodiments of the present invention will be described below. A fluorescent colorant (MPI-505C) was used as the fluorescent substance. FIG. 1 shows an excitation spectrum and a fluorescence spectrum of a fluorescent colorant measured by a fluorescence spectrophotometer. 400n wavelength
It is excited by light centered at m and emits fluorescence centered at a wavelength of 500 nm. FIG. 2 shows the absorption coefficient of the fluorescent colorant determined by the spectrophotometer. It can be seen that the spectrum almost coincides with the excitation spectrum. As shown in FIG. 3, a solar cell module of 40 × 40 mm 2 has a size of 20 × 20 mm 2.
N + pp + type polycrystalline silicon solar cell (energy gap 1.1 eV), 0.7 mm thick EVA filler,
It is composed of 3.2 mm thick soda glass as a surface protective material and a back sheet. The fluorescent colorant was applied on the protective glass of the module. FIG. 4 shows the surface reflectance of the solar cell module obtained by the integrating sphere reflection measurement of the spectrophotometer. It can be seen that the reflectance was reduced by applying the fluorescent colorant. In particular, light having a wavelength of 500 nm or less is absorbed as excitation light of fluorescence, so that the decrease is remarkable. That is, by the wavelength conversion in which the fluorescent substance absorbs short-wavelength light as excitation light and emits it as long-wavelength fluorescence, reflection of the incident light effective for energy conversion of the solar cell on the light receiving surface and light of 400 nm or less wavelength. The effect of suppressing loss due to absorption inside the surface protective material and the filler is expected.
A xenon lamp of 500 W was used as a light source, and current-voltage characteristics were obtained using a potentiostat. The incident light intensity of 79.4 mJs -1 cm -2 was measured using a power meter. Table 1 shows the characteristic values and the energy conversion efficiencies of the solar cells coated with the fluorescent colorant at a film thickness of 30 μm and those without the coating (Comparative Example 1). A 6% increase in energy conversion efficiency is observed with the application of the fluorescent colorant. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.
【０００７】[0007]
【発明の効果】本発明方法によるときは、取り扱いも安
全で容易な蛍光物質を用いて、少ない工程で、太陽電池
のエネルギー変換効率の増大をはかることができる。According to the method of the present invention, it is possible to increase the energy conversion efficiency of the solar cell in a small number of steps by using a fluorescent substance which is safe and easy to handle.
【図１】蛍光着色剤の励起スペクトルと蛍光スペクトル
を示す図である。FIG. 1 shows an excitation spectrum and a fluorescence spectrum of a fluorescent colorant.
【図２】蛍光着色剤の吸収係数を示す図である。FIG. 2 is a diagram showing an absorption coefficient of a fluorescent colorant.
【図３】太陽電池モジュールの模式図である。FIG. 3 is a schematic diagram of a solar cell module.
１蛍光着色剤 ２ガラス ３充填材 ４太陽電池 ５バックシート 1 Fluorescent colorant 2 Glass 3 Filler 4 Solar cell 5 Back sheet
【図４】太陽電池モジュールの表面反射率を示す図であ
る。FIG. 4 is a diagram showing the surface reflectance of a solar cell module.
Claims (2)
質の膜を形成することによりエネルギー変換効率の増大
をはかることを特徴とする太陽電池モジュールの改良方
法。1. A method for improving a solar cell module, comprising: forming a film of a fluorescent substance on a light receiving surface of the solar cell module to increase energy conversion efficiency.
護材の表面に蛍光物質の膜を形成する特許請求範囲第１
項記載の太陽電池モジュールの改良方法。2. The method according to claim 1, wherein a film of a fluorescent substance is formed on the surface of the surface protection material made of glass or plastic.
The method for improving a solar cell module according to the above item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11215711A JP2001007377A (en) | 1999-06-23 | 1999-06-23 | Solar cell module having film of fluorescent substance formed on light receiving face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11215711A JP2001007377A (en) | 1999-06-23 | 1999-06-23 | Solar cell module having film of fluorescent substance formed on light receiving face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001007377A true JP2001007377A (en) | 2001-01-12 |
Family
ID=16676910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11215711A Pending JP2001007377A (en) | 1999-06-23 | 1999-06-23 | Solar cell module having film of fluorescent substance formed on light receiving face |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001007377A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010015848A1 (en) * | 2010-03-08 | 2011-09-08 | Calyxo Gmbh | Solar module or solar cell with optically functional weather-resistant surface layer |
| WO2011155614A1 (en) * | 2010-06-11 | 2011-12-15 | 旭硝子株式会社 | Translucent laminate and solar cell module using same |
| WO2012132137A1 (en) * | 2011-03-25 | 2012-10-04 | 富士フイルム株式会社 | Wavelength conversion element and photoelectric conversion device |
| KR101201543B1 (en) * | 2011-04-14 | 2012-11-15 | 금호전기주식회사 | Solar cell module and method for manufacturing the same |
| TWI395806B (en) * | 2010-04-14 | 2013-05-11 | Ind Tech Res Inst | Packaging material |
| CN103646980A (en) * | 2013-12-24 | 2014-03-19 | 江苏金瑞晨新材料有限公司 | Back film having ultraviolet conversion function |
| US9082904B2 (en) | 2009-09-18 | 2015-07-14 | Sharp Kabushiki Kaisha | Solar cell module and solar photovoltaic system |
-
1999
- 1999-06-23 JP JP11215711A patent/JP2001007377A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9082904B2 (en) | 2009-09-18 | 2015-07-14 | Sharp Kabushiki Kaisha | Solar cell module and solar photovoltaic system |
| DE102010015848A1 (en) * | 2010-03-08 | 2011-09-08 | Calyxo Gmbh | Solar module or solar cell with optically functional weather-resistant surface layer |
| WO2011110329A3 (en) * | 2010-03-08 | 2012-05-03 | Calyxo Gmbh | Photovoltaic element with optically functional conversion layer for improving the conversion of the incident light and method for producing said photovoltaic element |
| TWI395806B (en) * | 2010-04-14 | 2013-05-11 | Ind Tech Res Inst | Packaging material |
| US8465675B2 (en) | 2010-04-14 | 2013-06-18 | Industrial Technology Research Institute | Encapsulation material |
| WO2011155614A1 (en) * | 2010-06-11 | 2011-12-15 | 旭硝子株式会社 | Translucent laminate and solar cell module using same |
| CN102939663A (en) * | 2010-06-11 | 2013-02-20 | 旭硝子株式会社 | Translucent laminate and solar cell module using same |
| WO2012132137A1 (en) * | 2011-03-25 | 2012-10-04 | 富士フイルム株式会社 | Wavelength conversion element and photoelectric conversion device |
| JP2012204605A (en) * | 2011-03-25 | 2012-10-22 | Fujifilm Corp | Wavelength conversion element and photoelectric conversion device |
| KR101201543B1 (en) * | 2011-04-14 | 2012-11-15 | 금호전기주식회사 | Solar cell module and method for manufacturing the same |
| CN103646980A (en) * | 2013-12-24 | 2014-03-19 | 江苏金瑞晨新材料有限公司 | Back film having ultraviolet conversion function |
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