JPH0336222A - Ag alloy foil for interconnector of solar cell - Google Patents
Ag alloy foil for interconnector of solar cellInfo
- Publication number
- JPH0336222A JPH0336222A JP2074921A JP7492190A JPH0336222A JP H0336222 A JPH0336222 A JP H0336222A JP 2074921 A JP2074921 A JP 2074921A JP 7492190 A JP7492190 A JP 7492190A JP H0336222 A JPH0336222 A JP H0336222A
- Authority
- JP
- Japan
- Prior art keywords
- alloy foil
- interconnector
- solar cell
- softening
- rare earth
- 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.)
- Granted
Links
- 229910001316 Ag alloy Inorganic materials 0.000 title claims abstract description 22
- 239000011888 foil Substances 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 7
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 6
- 229910052738 indium Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 241001590997 Moolgarda engeli Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-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)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、字面衛星などに搭載されるＳｔあるいはＣ
ａ−Ａｓ太陽電池のインターコネクタとして用いた場合
に、経時的軟化がきわめて小さく、かつ激しい熱サイク
ルにさらされた後でも僅かな軟化が発生するだけで、著
１． ＜長期に亘って製迭直後の特性を保持するＡｇ合
金箔材に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to the St or C
When used as an interconnector for a-As solar cells, the softening over time is extremely small, and only slight softening occurs even after exposure to severe thermal cycling. <Regarding an Ag alloy foil material that maintains its properties immediately after manufacturing for a long period of time.
同一出願人は、先に特願昭６２−１０１４４１号（特開
昭６３−２６６８８７号）として、
Ｃａ ： １０〜１１０００ｐｐ 。The same applicant previously filed Japanese Patent Application No. 101441/1982 (Japanese Patent Application Laid-Open No. 266887/1983) with Ca: 10-11000 pp.
を含有し、残りがＡｇと不可避不純物からなる組成を有
するＡｇ合金で構成してなる太陽電池のインターコネク
タ用Ａｇ合金箔材を出願した。An application has been filed for an Ag alloy foil material for interconnectors of solar cells, which is made of an Ag alloy having a composition of 100% and 100% of the total content of Ag, and the remainder consisting of Ag and unavoidable impurities.
しかし、上記の先行発明のＡｇ合金箔材においては、一
定環境下での経時的特性変化はきわめて小さいものの、
これが例えば宇宙空間に置かれた場合に遭遇する激しい
熱サイクルにさらされると、経時的に特性が徐々に変化
１−１必ず１−も長期に亘って特性変化の発生のない状
態に維拉するのが困難であり、信頼性の点で問題がある
。However, in the Ag alloy foil material of the above-mentioned prior invention, although the change in characteristics over time under a certain environment is extremely small,
When exposed to intense thermal cycles, such as those encountered when placed in outer space, the characteristics gradually change over time. It is difficult to do so, and there are problems in terms of reliability.
そこで、本発明省等は、上述のような観点から、上記の
Ｃａ含有Ａｇ合金箔材に着目し、これに耐熱サイクル性
を付与すべく研究を行なった結果、これに合金成分とし
て、Ｂｅ、希土類元素、およびＩｎのうちの１種または
２種以上を含有させると、経時的軟化がきわめて小さく
、かつ激しい熱サイクルにさらされた後でも僅かな軟化
が発生するだけで、著しく長期に亘って製造直後の特性
を保持するようになるという知見を得たのである。Therefore, from the above-mentioned viewpoint, the Ministry of the Invention and others focused on the above-mentioned Ca-containing Ag alloy foil material and conducted research to impart heat cycle resistance to it. When one or more of rare earth elements and In are included, the softening over time is extremely small, and even after exposure to intense heat cycles, only a slight softening occurs, and it can be used for an extremely long period of time. They obtained the knowledge that the properties retained immediately after manufacture were maintained.
この発明は、上記知見にもとづいてなされたものであっ
て、
Ｃａ ： １０〜１１０００ｐｐ 。This invention was made based on the above findings, and includes: Ca: 10 to 11,000 pp.
を含有し、さらに
Ｉｎ、Ｂｅ、および希土類元素のうちの１種または２種
以上；１０〜７５０ｐｐｍ。and further contains one or more of In, Be, and rare earth elements; 10 to 750 ppm.
を含有し、残りがＡｇと不可避不純物からなる組成を有
するＡｇ合金で構成してなる太陽電池のインターコネク
タ用Ａｇ合金箔材に特徴を有するものである。The present invention is characterized by an Ag alloy foil material for interconnectors of solar cells, which is made of an Ag alloy having a composition in which the remainder consists of Ag and unavoidable impurities.
以下に、この発明のＡｇ合金箔材において、成分組成を
上記の通りに限定した理由を説明する。The reason why the component composition of the Ag alloy foil material of the present invention is limited as described above will be explained below.
（ａ） Ｃａ
Ｃａ威成分は、経Ｉｌｂ的軟化を防０二する作用がある
が、その含有量が１．Ｏｐｐｍ未満では所望の経時的軟
化防止作用を確保することができず、一方その含有量が
１１０００ｐｐを越えると、急激に導電性が低下するよ
うになることから、その含有量をｌＯ〜１１０００ｐｐ
と定めた。(a) Ca The Ca component has the effect of preventing gradual softening, but if its content is 1. If the content is less than 10 ppm, the desired effect of preventing softening over time cannot be ensured, while if the content exceeds 11,000 ppm, the conductivity will decrease rapidly.
It was determined that
（ｂ） Ｉｎ、Ｂｅ、および希土類元素これらの成分
には、Ｃａとの共存において経時的軟化防止作用を促進
するほか、耐熱サイクル性を一段と向上させ、もって長
期に亘って特性変化を抑制する作用があるが、その含有
量がｘｏｐｐｍ未満では前記作用に所望の効果が得られ
ず、一方その含有量が７５０ｐｐｍを越えると、Ｃａと
同様に導電性が急に低下するようになることから、その
含有量を１０〜７５０１）Ｉ）Ｉｎと定めた。(b) In, Be, and rare earth elements These components not only promote the effect of preventing softening over time in coexistence with Ca, but also have the effect of further improving heat cycle resistance and suppressing changes in properties over a long period of time. However, if its content is less than xoppm, the desired effect cannot be obtained, while if its content exceeds 750 ppm, the conductivity will suddenly decrease like Ca. The content was determined as 10-7501)I)In.
つぎに、この発明のＡｇ合金箔材を実施例により具体的
に説明する。Next, the Ag alloy foil material of the present invention will be specifically explained with reference to Examples.
通常の真空溶解炉を用いて、それぞれ第１表に示される
成分組成をもったＡｇ合金溶湯を調製し、厚さ：ｌＯｍ
ｍＸ輻：１２０ｍｍＸ長さ：２００ｍｎの寸法をもった
インゴットに鋳造し、このインゴットの両面を１關づつ
面側して厚さ：８加とし、これのマイクロビッカース硬
さを荷重＝５ｇの条件で測定すると共に、過流型電導度
Ｊ１を用いて導電率を測定し、ついでこのインゴットに
通常の条件で冷間圧延を施して厚さ： ０．０３ｎ＋ｍ
の本発明Ａｇ合金箔材１〜２５および促来Ａｇ合金箔利
１〜５をそれぞれ製造した。Molten Ag alloys having the compositions shown in Table 1 were prepared using an ordinary vacuum melting furnace, and the thickness was 10m.
Cast into an ingot with dimensions of mX radius: 120 mm x length: 200 mm, turn both sides of this ingot side by side to give a thickness of 8 mm, and check the micro Vickers hardness under the condition of load = 5 g. At the same time, the conductivity was measured using a current conductivity J1, and the ingot was then cold rolled under normal conditions to a thickness of 0.03n+m.
Ag alloy foil materials 1 to 25 of the present invention and Ag alloy foil materials 1 to 5 of the present invention were manufactured, respectively.
なお、従来Ａｇ合金箔材１〜５は、いずれも合金成分と
してＣａを含有するだけで、Ｉｎ、Ｂｅ。Note that all of the conventional Ag alloy foil materials 1 to 5 only contain Ca as an alloy component, and In and Be.
および希土類元素を含有しないものである。and does not contain rare earth elements.
つぎに、この結果得られた各種の箔材について、製造直
後、室温に６ケ月間放置後、および耐熱サイクル性を評
価する目的で、例えば宇宙空間でさらされる熱サイクル
よりも苛酷な条件、すなわち３００℃に３０分間保持後
、直ちに室温の水中に浸漬冷却を１サイクルとし、これ
を１００サイクル行なった後のマイクロビッカース硬さ
を荷重＝５ｇの条件で測定した。これらのδ１り定結果
を第１表に示した。Next, the various foil materials obtained as a result were tested immediately after production, after being left at room temperature for 6 months, and for the purpose of evaluating heat cycle resistance under conditions more severe than the heat cycles exposed in space, for example. After being held at 300° C. for 30 minutes, it was immediately immersed in water at room temperature for one cycle of cooling, and after 100 cycles, the micro Vickers hardness was measured under a load of 5 g. The results of these δ1 determinations are shown in Table 1.
第１表に示される結果から、本発明Ａｇ合金箔材１〜２
５は、いずれも６ケ月経過後および熱サイクル付加後も
製造直後の冷間圧延に伴なう加工硬化により得られた硬
さを保持し、僅かな硬さ低下があるだけでほとんど特性
に変化がなく、かつ９４％以上の高い導電率を保持する
のに対して、従来Ａｇ合金箔材１〜５は、常温環境下で
は経時的軟化がほとんどなく、高い導電性を保持するが
、激しい熱サイクルにさらされると、かなりの硬さ低下
が見られるようになることが明らかである。From the results shown in Table 1, the present invention Ag alloy foil materials 1 to 2
5 retains the hardness obtained by work hardening due to cold rolling immediately after manufacture even after 6 months and after being subjected to heat cycles, and the properties almost change with only a slight decrease in hardness. In contrast, conventional Ag alloy foil materials 1 to 5 maintain high conductivity with almost no softening over time at room temperature, but they do not soften under intense heat. It is clear that upon exposure to cycling, a significant hardness loss becomes apparent.
上述のように、この発明のＡｇ合金箔材は、経時的軟化
がきわめて少なく、かつ激しい熱サイクルにさらされた
後でも僅かな軟化があるだけで、著しく長期に亘って製
造直後の特性を保持し、かつ高い導電性をｈ゛するので
、特にこれらの特性が要求される太陽電池のインターコ
ネクタとして用いた場合に、すぐれた性能を著しく長期
に亘って安定的に発揮するようになるなど工業上有用な
特性を有するのである。As mentioned above, the Ag alloy foil material of the present invention exhibits extremely little softening over time, and even after being exposed to severe thermal cycles, it retains its properties immediately after production for an extremely long period of time with only slight softening. It also has high conductivity, so when used as an interconnector for solar cells, which require these characteristics, it can exhibit excellent performance stably over a long period of time, making it an industrial choice. It has many useful properties.
出
願
人
三菱金属株式会社
代
理
人
蟲
田
和
夫
外１名
手
続
補
正
書
（方式）
％式％
発明の名称
太陽電池のインターコネクタ用〜合金箔材補正をする者
事件との関係 特許出願人
住所 東京都千代田区大手町−丁目５番２号氏名〈名称
） （６２６）三菱金属株式会社代表者 永 野
健
代 理 人
住所 東京都千代田区神田錦町−丁目２３番地宗保第二
ビル８階
補正命令の日付（発進口）
平底 ２年 ６月２６日
６、 補正の対象 明細書の全文
７、補正の内容Applicant Mitsubishi Metals Co., Ltd. Agent Kazuo Kabuta and one other procedural amendment (method) % formula % Name of invention For interconnectors of solar cells - Relationship to the case of person making amendments to alloy foil material Patent applicant address Chiyoda, Tokyo No. 5-2, Otemachi-ku, Tokyo Name (626) Mitsubishi Metals Corporation Representative Kenyo Nagano Address Address: 8th floor, Soho Daini Building, 23-chome, Kanda Nishikicho, Chiyoda-ku, Tokyo Date of amendment order ( Starting port) Flat bottom 2 years June 26 6, Subject of amendment Full text of the specification 7, Contents of amendment
Claims (1)
以上：１０〜７５０ｐｐｍ、 を含有し、残りがＡｇと不可避不純物からなる組成を有
するＡｇ合金で構成してなる太陽電池のインターコネク
タ用Ａｇ合金箔材。(1) Contains Ca: 10 to 1000 ppm, and further contains In, Be, and one or more of rare earth elements: 10 to 750 ppm, with the remainder consisting of Ag and inevitable impurities. Ag alloy foil material for solar cell interconnectors made of Ag alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2074921A JP2727730B2 (en) | 1989-03-24 | 1990-03-23 | Ag alloy foil material for interconnector of solar cell |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7333789 | 1989-03-24 | ||
| JP1-73337 | 1989-03-24 | ||
| JP2074921A JP2727730B2 (en) | 1989-03-24 | 1990-03-23 | Ag alloy foil material for interconnector of solar cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0336222A true JPH0336222A (en) | 1991-02-15 |
| JP2727730B2 JP2727730B2 (en) | 1998-03-18 |
Family
ID=26414492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2074921A Expired - Lifetime JP2727730B2 (en) | 1989-03-24 | 1990-03-23 | Ag alloy foil material for interconnector of solar cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2727730B2 (en) |
-
1990
- 1990-03-23 JP JP2074921A patent/JP2727730B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2727730B2 (en) | 1998-03-18 |
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