TWI455339B - A novel structure and new set-up method of flexible solar cells - Google Patents

A novel structure and new set-up method of flexible solar cells Download PDF

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TWI455339B
TWI455339B TW100148001A TW100148001A TWI455339B TW I455339 B TWI455339 B TW I455339B TW 100148001 A TW100148001 A TW 100148001A TW 100148001 A TW100148001 A TW 100148001A TW I455339 B TWI455339 B TW I455339B
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solar cell
flexible
amorphous germanium
thin film
film solar
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TW100148001A
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TW201327888A (en
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Yong Zhi Chen
Ming Chuan Wang
Tzu Chin Hsu
Der Jun Jan
Chi Fong Ai
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Atomic Energy Council
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/547Monocrystalline silicon PV cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/548Amorphous silicon PV cells

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Description

可撓式太陽能電池結構之安裝處理方法Flexible solar cell structure installation and processing method

本發明係有關於一種可撓式太陽能電池結構之安裝處理方法,尤指涉及一種nip或pin型之可撓式非晶矽薄膜太陽能電池,特別係指在撓曲之狀態下安裝,可以得到不同效能之太陽能電池元件者。The present invention relates to a method for mounting and processing a flexible solar cell structure, and more particularly to a flexible or amorphous thin film solar cell of the nip or pin type, particularly for mounting in a state of deflection, which can be different. The solar cell component of performance.

發展再生能源以對抗溫室效應造成地球暖化之問題,已成為世界各國能源發展之首要目標之一。時至今日,利用光電轉換產生能源之太陽能已為正在起飛之重要能源產業之一,這主要係因為發電過程中不產生二氧化碳,對於減緩地球溫室效應將會有極大之貢獻。但是目前市占率最高之矽晶片型太陽電池,其製程需要消耗大量之矽原料,此將導致矽原料之嚴重缺料,而矽原料之短缺也嚴重影響了結晶矽太陽能電池之發展。因此相對而言,發展厚度僅幾微米之薄膜型太陽電池以大幅減少矽原料之消耗,實為未來太陽電池之發展重點。The development of renewable energy to combat the global warming caused by the greenhouse effect has become one of the primary goals of energy development in all countries of the world. Today, solar energy that uses photoelectric conversion to generate energy has become one of the important energy industries that are taking off. This is mainly because carbon dioxide is not generated during power generation, which will greatly contribute to the mitigation of the global warming effect. However, the current wafer-type solar cells with the highest market share require a large amount of raw materials, which will lead to serious shortage of raw materials, and the shortage of raw materials also seriously affects the development of crystalline solar cells. Therefore, relatively speaking, the development of thin-film solar cells with a thickness of only a few micrometers has greatly reduced the consumption of germanium raw materials, which is the focus of future solar cells.

目前太陽能市場以矽晶片型太陽電池為主,而此類太陽電池模組之體積與重量較大,而且弱光發電效率不佳,因此必須安裝於戶外日照充足之空地或建築物屋頂等堅固之處,才能有效利用陽光而發電。所以,矽晶太陽電池比較不合適應用於手機、個人數位助理(Personal Digital Assistant,PDA)、及筆記型電腦等行動裝置,亦或應用於室內節能之用途。相反地,可撓式非晶矽薄膜太陽電池具有較為輕薄短小、並且弱光發電效率較佳等優勢,恰好非常適合應用於行動裝置或室內節能。此外,即使用於室外太陽能發電系統,也因得利於其輕薄可撓之特點,安裝上較不受限於環境或場地影響。At present, the solar market is dominated by silicon wafer solar cells, and such solar cell modules are large in size and weight, and the low-light power generation efficiency is not good, so it must be installed in an outdoor space with sufficient sunshine or a strong roof of a building. In order to effectively use the sun to generate electricity. Therefore, the twin solar cell is not suitable for mobile devices, personal digital assistants (PDAs), and notebook computers, or for indoor energy saving applications. Conversely, flexible amorphous germanium thin film solar cells have the advantages of being lighter, thinner, and lighter, and have better power generation efficiency, which is very suitable for mobile devices or indoor energy saving. In addition, even if it is used in an outdoor solar power generation system, it is not limited to the environment or the site due to its thin and flexible characteristics.

然而,由於薄膜太陽電池元件受到撓曲時,可能會影響薄膜中矽原子間之鍵結,而導致缺陷密度之改變,進而影響元件特性,故,一般習用者係無法符合使用者於實際使用時之所需。However, when the thin-film solar cell element is deflected, it may affect the bonding between the germanium atoms in the film, which leads to a change in the defect density, which in turn affects the device characteristics. Therefore, the general practitioner cannot meet the user's actual use. Needed.

本發明之主要目的係在於,克服習知技藝所遭遇之上述問題並提供一種在撓曲之狀態下安裝,可以得到不同效能之可撓式太陽能電池元件之安裝處理方法。SUMMARY OF THE INVENTION The main object of the present invention is to overcome the above-mentioned problems encountered in the prior art and to provide a method of mounting and disposing a flexible solar cell element having different performances in a state of being flexed.

本發明之次要目的係在於,提供一種具有輕薄可撓,且可安裝於室內或戶外之可撓式太陽能電池結構。A secondary object of the present invention is to provide a flexible solar cell structure that is lightweight, flexible, and mountable indoors or outdoors.

本發明之另一目的係在於,提供一種可將太陽能電池卷成圓柱體並集結成陣列之可撓式太陽能板裝置。Another object of the present invention is to provide a flexible solar panel apparatus that can roll a solar cell into a cylinder and assemble it into an array.

為達以上之目的,本發明係一種可撓式太陽能電池結構之安裝處理方法,係將nip或pin型之可撓式非晶矽薄膜太陽能電池鍍製於不銹鋼或塑膠基板上,並使其安裝於撓曲之(外折或內折)表面之上。在撓曲狀態下,該可撓式非晶矽薄膜太陽能電池元件內之i型非晶矽層會產生特性上之變化,以至於此元件,不論在開路電壓(Voc)、短路電流(Jsc)、填充因子(FF)及轉換效率(Eff)等四項重要之特性參數上,都產生了相當程度之增益,進而能得到不同效能之太陽能電池元件。For the purpose of the above, the present invention relates to a method for installing a flexible solar cell structure by plating a nip or pin type flexible amorphous germanium thin film solar cell on a stainless steel or plastic substrate and mounting it. Above the surface of the flex (outer or inner fold). In the flexed state, the i-type amorphous germanium layer in the flexible amorphous germanium thin film solar cell element undergoes a change in characteristics, such that the element is open circuit voltage (Voc), short circuit current (Jsc) Four important characteristic parameters, such as fill factor (FF) and conversion efficiency (Eff), generate a considerable degree of gain, which in turn enables solar cell components with different performance.

請參閱『第1圖~第4圖』所示,係分別為本發明之可撓式太陽能板陣列架構示意圖、本發明nip型之可撓式非晶矽薄膜太陽能電池結構示意圖、本發明pin型之可撓式非晶矽薄膜太陽能電池結構示意圖、及本發明於一較佳實施例之安裝態樣示意圖。如圖所示:本發明係一種可撓式太陽能電池結構之安裝處理方法,透過在撓曲之狀態下進行安裝,可藉此提升此結構之太陽能電池之效能。Please refer to FIG. 1 to FIG. 4 , which are schematic diagrams of the flexible solar panel array structure of the present invention, the structure of the nip type flexible amorphous germanium thin film solar cell of the present invention, and the pin type of the present invention. A schematic diagram of a flexible amorphous germanium thin film solar cell structure and a schematic view of the mounting aspect of the present invention in a preferred embodiment. As shown in the figure, the present invention is a method for mounting and manufacturing a flexible solar cell structure, which can improve the performance of the solar cell of the structure by being mounted in a state of deflection.

當運用時,本發明所應用之可撓式非晶矽薄膜太陽能電池10、10a之結構係可為nip型或pin型,其結構如第2、3圖所示。以nip型之可撓式非晶矽薄膜太陽能電池10為例,其元件係以不銹鋼薄片或塑膠為基板11,依序鍍上一n型非晶(或微晶)矽薄膜層12、一i型非晶矽薄膜層13及一p型非晶(或微晶)矽薄膜層14,由此三層用以發電,最後再鍍上一透明導電膜作為導電層15;而pin型之可撓式非晶矽薄膜太陽能電池10a,其差異僅在於p、i與n層之次序相反,其餘與nip元件皆相同。When used, the flexible amorphous germanium thin film solar cells 10, 10a to which the present invention is applied may be of a nip type or a pin type, and the structure thereof is as shown in Figs. Taking the nip type flexible amorphous germanium thin film solar cell 10 as an example, the component is made of stainless steel sheet or plastic as the substrate 11, and an n-type amorphous (or microcrystalline) germanium film layer 12, an i is sequentially plated. An amorphous germanium film layer 13 and a p-type amorphous (or microcrystalline) germanium film layer 14, whereby three layers are used for power generation, and finally a transparent conductive film is plated as the conductive layer 15; and the pin type is flexible The amorphous germanium thin film solar cell 10a differs only in the order of p, i and n layers, and the rest are the same as the nip element.

當安裝時,本發明係將nip型或pin型之可撓式非晶矽薄膜太陽能電池10、10a鍍製於不銹鋼或塑膠基板11上,並使其安裝於該基板11之撓曲表面之上;其中,該撓曲係包含外折撓曲或內折撓曲(如第4圖所示)。藉此,本發明以不銹鋼或塑膠基板為基材之可撓式非晶矽薄膜太陽能電池,因具有輕薄可撓之優點,安裝於室內或戶外均有其特殊之便利性。其中室內可整合安裝於筆記型電腦、手機及個人數位助理(Personal Digital Assistant,PDA)等小型電子裝置;室外則可將此太陽能電池10、10a卷成圓柱體並安裝於支架1上,以集結成可撓式太陽能板陣列100,如第1圖所示,這樣之裝置比起一般平面型太陽能板更能夠吸收環境之散射光,並且抵擋強風對裝置穩固性之影響。此外,在撓曲之狀態下安裝,可撓式非晶矽薄膜太陽能電池元件內之i型非晶矽層會產生特性上之變化,以至於此元件,不論在開路電壓(Voc)、短路電流(Jsc)、填充因子(FF)及轉換效率(Eff)等四項重要之特性參數上,都產生了相當程度之增益(如下表一至表四所示),進而能得到不同效能之太陽能電池元件。When installed, the present invention applies a nip type or pin type flexible amorphous germanium thin film solar cell 10, 10a to a stainless steel or plastic substrate 11 and mounts it on the flexible surface of the substrate 11. Wherein the flexure comprises flexure or inflection (as shown in Figure 4). Therefore, the flexible amorphous germanium thin film solar cell based on the stainless steel or the plastic substrate has the advantages of being light and thin, and has special convenience for installation indoors or outdoors. The indoor unit can be integrated and installed in a small electronic device such as a notebook computer, a mobile phone, and a personal digital assistant (PDA); in the outdoor, the solar battery 10, 10a can be rolled into a cylinder and mounted on the bracket 1 to be set. Forming the flexible solar panel array 100, as shown in Fig. 1, such a device is more capable of absorbing ambient scattered light than a generally planar solar panel and resisting the influence of strong wind on the stability of the device. In addition, when mounted in a flexed state, the i-type amorphous germanium layer in the flexible amorphous germanium thin film solar cell element undergoes a characteristic change, such that the component, regardless of the open circuit voltage (Voc), short circuit current Four important characteristic parameters (Jsc), fill factor (FF) and conversion efficiency (Eff) all produce a considerable degree of gain (as shown in Tables 1 to 4 below), which can obtain solar cell components with different performance. .

表一至表四所示係於一較佳實施例中,可撓式非晶矽薄膜太陽能電池元件在內折、平鋪與外折之狀態下所產生之特性上之變化。由表一可知,當高電壓為主要應用需求之時,太陽能電池將建議使用以pin型元件並外折之方式安裝,可獲得高達0.895 V之開路電壓。而由表二可知,當電流為主要應用需求之時,則建議應使用nip型之太陽電池元件,並以外折之方式安裝,以得到高達13.32 mA/cm2 之短路電流。最後,由表四可知,若僅考量功率之輸出,則nip型元件以外折方式安裝,係可得到最高之轉換效率6.26%。Tables 1 to 4 show changes in the characteristics of the flexible amorphous germanium thin film solar cell element in a state of being folded, tiled, and folded in a preferred embodiment. As can be seen from Table 1, when high voltage is the main application requirement, the solar cell will be recommended to be mounted with a pin-type component and folded outward to obtain an open circuit voltage of up to 0.895 V. As can be seen from Table 2, when the current is the main application requirement, it is recommended to use the nip type solar cell component and install it in a folded manner to obtain a short-circuit current of up to 13.32 mA/cm 2 . Finally, as can be seen from Table 4, if only the power output is considered, the nip type component is mounted in a folded manner, and the highest conversion efficiency is 6.26%.

綜上所述,本發明係一種可撓式太陽能電池結構之安裝處理方法,可有效改善習用之種種缺點,係將nip或pin型之可撓式非晶矽薄膜太陽能電池鍍製於不銹鋼或塑膠基板上,並使其安裝於撓曲之表面之上;在撓曲狀態下,可撓式非晶矽薄膜太陽能電池元件內之i型非晶矽層會產生特性上之變化,以至於此元件,不論在開路電壓(Voc)、短路電流(Jsc)、填充因子(FF)及轉換效率(Eff)等四項重要之特性參數上,都產生了相當程度之增益,而能得到不同效能之太陽能電池,進而使本發明之產生能更進步、更實用、更符合使用者之所須,確已符合發明專利申請之要件,爰依法提出專利申請。In summary, the present invention is a method for mounting and processing a flexible solar cell structure, which can effectively improve various disadvantages of the conventional use, and is to coat a nip or pin type flexible amorphous germanium thin film solar cell in stainless steel or plastic. On the substrate, and mounted on the surface of the deflection; in the flexed state, the i-type amorphous germanium layer in the flexible amorphous germanium thin film solar cell element is changed in characteristics, so that the component Regardless of the four important characteristic parameters of open circuit voltage (Voc), short circuit current (Jsc), fill factor (FF) and conversion efficiency (Eff), a considerable degree of gain is generated, and solar energy with different performance can be obtained. The battery, in turn, makes the invention more progressive, more practical, and more suitable for the user, and has indeed met the requirements of the invention patent application, and filed a patent application according to law.

惟以上所述者,僅為本發明之較佳實施例而已,當不能以此限定本發明實施之範圍;故,凡依本發明申請專利範圍及發明說明書內容所作之簡單的等效變化與修飾,皆應仍屬本發明專利涵蓋之範圍內。However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; therefore, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the invention are modified. All should remain within the scope of the invention patent.

1...支架1. . . support

10...可撓式非晶矽薄膜太陽能電池10. . . Flexible amorphous germanium thin film solar cell

10a...可撓式非晶矽薄膜太陽能電池10a. . . Flexible amorphous germanium thin film solar cell

11...基板11. . . Substrate

12...n型非晶(或微晶)矽薄膜層12. . . N-type amorphous (or microcrystalline) tantalum film layer

13...i型非晶矽薄膜層13. . . I type amorphous germanium film layer

14...p型非晶(或微晶)矽薄膜層14. . . P-type amorphous (or microcrystalline) tantalum film layer

15...導電層15. . . Conductive layer

100...可撓式太陽能板陣列100. . . Flexible solar panel array

第1圖,係本發明之可撓式太陽能板陣列架構示意圖。Fig. 1 is a schematic view showing the structure of a flexible solar panel array of the present invention.

第2圖,係本發明nip型之可撓式非晶矽薄膜太陽能電池結構示意圖。Fig. 2 is a schematic view showing the structure of a pn-type flexible amorphous germanium thin film solar cell of the present invention.

第3圖,係本發明pin型之可撓式非晶矽薄膜太陽能電池結構示意圖。Fig. 3 is a schematic view showing the structure of a pin-type flexible amorphous germanium thin film solar cell of the present invention.

第4圖,係本發明於一較佳實施例之安裝態樣示意圖。Figure 4 is a schematic view showing the mounting aspect of the present invention in a preferred embodiment.

1...支架1. . . support

10...可撓式非晶矽薄膜太陽能電池10. . . Flexible amorphous germanium thin film solar cell

10a...可撓式非晶矽薄膜太陽能電池10a. . . Flexible amorphous germanium thin film solar cell

100...可撓式太陽能板陣列100. . . Flexible solar panel array

Claims (4)

一種可撓式太陽能電池結構之安裝處理方法,係適用於撓曲之狀態下進行安裝者,其提供一可撓式非晶矽薄膜太陽能電池,將該可撓式非晶矽薄膜太陽能電池鍍製於一基板上,使其安裝於該基板之撓曲表面之上;其中,該可撓式非晶矽薄膜太陽能電池係為nip型或pin型之結構;在撓曲狀態下,該可撓式非晶矽薄膜太陽能電池元件內之i型非晶矽層會產生特性上之變化,提供至少4%之功率轉換效率(Eff)。 A method for mounting and processing a flexible solar cell structure, which is suitable for installation in a state of deflection, which provides a flexible amorphous germanium thin film solar cell, and the flexible amorphous germanium thin film solar cell is plated Mounting on a substrate on a flexing surface of the substrate; wherein the flexible amorphous germanium thin film solar cell is a nip type or a pin type structure; in a flexed state, the flexible type The i-type amorphous germanium layer in the amorphous germanium thin film solar cell element undergoes a change in characteristics, providing a power conversion efficiency (Eff) of at least 4%. 依申請專利範圍第1項所述之可撓式太陽能電池結構之安裝處理方法,其中,該基板係為不銹鋼或塑膠基板其中之一。 The method for mounting a flexible solar cell structure according to claim 1, wherein the substrate is one of a stainless steel or a plastic substrate. 依申請專利範圍第1項所述之可撓式太陽能電池結構之安裝處理方法,其中,該可撓式非晶矽薄膜太陽能電池之上方係形成有一透明導電膜之導電層。 The method for mounting a flexible solar cell structure according to claim 1, wherein a conductive layer of a transparent conductive film is formed on the top of the flexible amorphous germanium thin film solar cell. 依申請專利範圍第1項所述之可撓式太陽能電池結構之安裝處理方法,其中,該撓曲包含外折撓曲或內折撓曲其中之一。 The method of installing a flexible solar cell structure according to claim 1, wherein the flexing comprises one of flexing or inward flexing.
TW100148001A 2011-12-22 2011-12-22 A novel structure and new set-up method of flexible solar cells TWI455339B (en)

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TW201110369A (en) * 2009-09-09 2011-03-16 Univ Nat Pingtung Sci & Tech Flexible solar cell with high transmission and the manufacturing process thereof

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TW201110369A (en) * 2009-09-09 2011-03-16 Univ Nat Pingtung Sci & Tech Flexible solar cell with high transmission and the manufacturing process thereof

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