JPS629750Y2 - - Google Patents
Info
- Publication number
- JPS629750Y2 JPS629750Y2 JP1981002495U JP249581U JPS629750Y2 JP S629750 Y2 JPS629750 Y2 JP S629750Y2 JP 1981002495 U JP1981002495 U JP 1981002495U JP 249581 U JP249581 U JP 249581U JP S629750 Y2 JPS629750 Y2 JP S629750Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- starting end
- tapered
- width
- confluence point
- 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.)
- Expired
Links
- 239000004065 semiconductor Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 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
- Y02E10/549—Organic PV cells
Description
【考案の詳細な説明】
本考案は半導体ウエハの光照射面に所望パター
ンの表面電極を付着し、裏側に裏面電極を形成し
た太陽電池に関し、特に上記表面電極のパターン
に係るものである。[Detailed Description of the Invention] The present invention relates to a solar cell in which a desired pattern of front electrodes is attached to the light-irradiated surface of a semiconductor wafer and a back electrode is formed on the back side, and particularly relates to the pattern of the front electrode.
従来から第１図のように半導体ウエハａの光照
射面に、電流取出用の中心電極ｂと、これに合流
する複数群からなる補助電極リードｃ，c′，c″…
…とにより表面電極ｄを形成することが行なわれ
ている。 Conventionally, as shown in FIG. 1, on the light irradiation surface of a semiconductor wafer a, a center electrode b for taking out current, and a plurality of groups of auxiliary electrode leads c, c', c''...
... to form the surface electrode d.
ところが上記中心電極ｂとしては、図示の如く
広巾に形成された最終端部b′から、細巾の始端部
b″まで、所定勾配にて先細りとした単純なテー
パ形状が採択されているため、特に始端側におけ
る細線部にあつて、そこに収集流過される電流負
担が過大となつてしまい、この結果光照射によつ
て発生した上記電流の損失が生ずることになるか
ら、電流収集効率が当該細線部によつて低下し、
これが太陽電池としてのエネルギ変換効率を低い
ものとしており、さらに上記の如き単純テーパ形
状とすることによつて、中心電極ｂの全面積は可
成り大となり、それでありながら、上記の如き損
失を生じるだけでなく、電極面積の過大に伴う有
効光照射面の狭小という難点も指摘できることに
なり、このため一層上記エネルギ変換効率を低下
させている。 However, as shown in the figure, the center electrode b has a wide final end b' to a narrow starting end.
Since a simple taper shape is adopted that tapers at a predetermined slope up to b'', the current load that is collected and passed through the thin wire section, especially on the starting end side, becomes excessive, and as a result, Since a loss of the above-mentioned current generated by light irradiation occurs, the current collection efficiency decreases due to the thin wire portion,
This makes the energy conversion efficiency as a solar cell low.Furthermore, by adopting the simple tapered shape as described above, the total area of the center electrode b becomes considerably large, and even so, the loss as described above occurs. In addition, it can be pointed out that the effective light irradiation surface is narrow due to the excessive electrode area, which further reduces the energy conversion efficiency.
本考案はこのような諸点に着目して検討された
ものであり、上記中心電極の形状を階段状に広巾
となるテーパ形状に構成することによつて、電流
収集効率を向上させると共に、中心電極の電極面
積を削減して有効光照射面の拡大化を計ろうとす
るのが、その目的である。 The present invention was developed with a focus on these points, and by configuring the center electrode in a tapered shape with a stepwise width, it is possible to improve the current collection efficiency and improve the current collection efficiency of the center electrode. The purpose is to expand the effective light irradiation area by reducing the area of the electrodes.
本考案を図示の実施例によつて詳記すれば第２
図に示す通り、半導体ウエハ１の光照射面２には
既知の如く中心電極３と、これと合流する所望複
数の補助電極リード４が形成されており、図示の
実施例では同リード４が４Ａ，４Ｂ，４Ｃ、４
Ｄ，４Ｅ、４Ｆ，４Ｇのタブロツクにより形成さ
れている。 The present invention will be described in detail with reference to the illustrated embodiments.
As shown in the figure, a center electrode 3 and a desired plurality of auxiliary electrode leads 4 merging with the center electrode 3 are formed on the light irradiation surface 2 of the semiconductor wafer 1, as is known in the art. ,4B,4C,4
It is formed by tab blocks D, 4E, 4F, and 4G.
そしてこの中心電極３の始端部５に、これより
狭巾の上記３ブロツクである補助電極リード４
Ａ，４Ｂ，４Ｃが合流して第１合流点Ｘが形成さ
れており、当該始端部５から次の第２合流点Ｙ、
すなわち中心電極３に２ブロツクである補助電極
リード４Ｄ，４Ｅが合流する地点に向けて次第に
広巾となる第１テーパ電極部６を形成する。 Then, at the starting end 5 of this center electrode 3, an auxiliary electrode lead 4, which is the above-mentioned three blocks narrower than this, is attached.
A, 4B, and 4C merge to form a first merging point X, and from the starting end 5 to the next second merging point Y,
That is, a first tapered electrode portion 6 is formed on the center electrode 3, which gradually becomes wider toward the point where the two blocks of auxiliary electrode leads 4D and 4E join.
次に上記第２合流点Ｙと第３合流点Ｚとの間に
は、第１テーパ電極部６の終端よりも広巾とし第
２合流点Ｙに第１階段部７を形成することにより
得られた始端から第３合流点Ｚに向け次第に広巾
となる第２テーパ電極部８を形成する。 Next, between the second confluence point Y and the third confluence point Z, a first step part 7 is formed at the second confluence point Y, which is wider than the end of the first tapered electrode part 6. A second tapered electrode portion 8 is formed which gradually becomes wider from the starting end toward the third confluence point Z.
そしてさらに図示例では、上記第２テーパ電極
部８の終端よりも広巾とし始端から中心電極３の
最終端部３′に向け次第に広巾とした最終テーパ
電極部９を形成するのであり、この結果第３合流
点Ｚに第２階段部１０が形成される。 Furthermore, in the illustrated example, a final tapered electrode part 9 is formed which is wider than the terminal end of the second tapered electrode part 8 and whose width gradually becomes wider from the starting end toward the final end part 3' of the center electrode 3. A second step portion 10 is formed at the three confluence point Z.
従つて本考案によれば１箇所以上の階段部７，
１０が形成され、前記始端部５と階段部７，１０
との間にテーパ電極部６，８が階段状に連設さ
れ、始端部５には補助電極リード４が合流し、最
終階段部１０からは最終テーパ電極部９が延出さ
れることになる。 Therefore, according to the present invention, one or more staircase portions 7,
10 is formed, and the starting end 5 and the step portions 7, 10
The tapered electrode parts 6 and 8 are arranged in a stepwise manner between the two, the auxiliary electrode lead 4 joins the starting end part 5, and the final tapered electrode part 9 extends from the final step part 10.
こゝで上記した本案電極パターンの一具体例を
第３図によつて説示すれば、補助電極リード４は
すべて、その先端を図示の如く0.15mm、基端を
0.2mmとしたテーパ状に形成し、中心電極３の始
端部５には３ブロツクの補助電極リード４Ａ，４
Ｂ，４Ｃが合流するので、同始端部５の巾を、
0.2×３＝0.6mmと決め、次に第１テーパ電極部６
は終端が0.7mmとなるようなテーパをつけ、第２
テーパ電極部８の始端は上記終端の0.7mmと２ブ
ロツクの補助電極リード４Ｄ，４Ｅの巾、各0.2
mmを加算して0.7＋0.2×２＝1.1と定め、第２テー
パ電極部８の終端を、1.1＋0.1＝1.2mmとなし、さ
らに最終テーパ電極部９の始端巾は1.2＋0.2×２
＝1.6とした。 Here, a specific example of the above-mentioned electrode pattern of the present invention will be explained with reference to FIG. 3. All of the auxiliary electrode leads 4 have a tip end of 0.15 mm and a base end of
It is formed into a tapered shape of 0.2 mm, and three blocks of auxiliary electrode leads 4A, 4 are provided at the starting end 5 of the center electrode 3.
Since B and 4C merge, the width of the starting end 5 is
Decide 0.2×3=0.6mm, then first taper electrode part 6
taper so that the end is 0.7mm, and
The starting end of the tapered electrode section 8 is 0.7 mm from the above-mentioned terminal end, and the width of the two blocks of auxiliary electrode leads 4D and 4E is 0.2 mm each.
mm is added and determined as 0.7 + 0.2 x 2 = 1.1, the end of the second tapered electrode section 8 is set as 1.1 + 0.1 = 1.2 mm, and the starting width of the final tapered electrode section 9 is 1.2 + 0.2 ×2
= 1.6.
そして、このような設計とした電極パターンの
全面積Ａと、第４図の如く実線で示した従来の単
純テーパによる中心電極の全面積Ｂとを比較した
ところ約４mm２ではあるが上記ＡをＢよりも小さ
くすることができた。 Comparing the total area A of the electrode pattern designed in this way with the total area B of the conventional simple taper center electrode shown by the solid line in Figure 4, it is approximately 4 mm2 , but the above A is I was able to make it smaller than B.
本考案は上記の実施例によつて具現される通
り、補助電極リードが中心電極に合流する合流点
に階段部を形成し、中心電極を階段状に広巾とな
る所要数のテーパ電極部により形成するよう構成
したので、中心電極の始端側にあつても充分な電
流容量を具有することになるから、補助電極リー
ドの集合する合流点にあつて、階段部が形成され
ることで中心電極が広巾となり、この結果当該合
流点での全電流が増大しても、これまでの単なる
全テーパ状中心電極によるものに比し、電流負担
が過大となり、電流損失が大きくなつてしまうこ
ともなく、電流収集効率を向上させることができ
る。 As embodied in the above-mentioned embodiment, the present invention forms a stepped portion at the confluence point where the auxiliary electrode lead joins the center electrode, and the center electrode is formed by a required number of tapered electrode portions having a stepped width. Since it is configured so that it has a sufficient current capacity even on the starting end side of the center electrode, a stepped portion is formed at the confluence point where the auxiliary electrode leads gather, so that the center electrode As a result, even if the total current at the junction increases, the current load will not become excessive and the current loss will not become large compared to the conventional case where the entire tapered center electrode was used. Current collection efficiency can be improved.
しかも、上記従来の全テーパ状中心電極より
も、本考案の階段状中心電極によれば、その電極
面積が削減されることになるから、太陽電池とし
ての有効光照射面を拡大化することが可能とな
る。 Moreover, since the stepped center electrode of the present invention reduces the electrode area compared to the conventional fully tapered center electrode, it is possible to expand the effective light irradiation surface of the solar cell. It becomes possible.
第１図は従来の表面電極を示した太陽電池の平
面図、第２図は本案に係る表面電極パターンを示
した太陽電池の平面図、第３図は同パターンの拡
大要部平面図、第４図は同パターンの中心電極と
従来例とを比較した平面説明図である。
１……半導体ウエハ、２……光照射面、３……
中心電極、３′……中心電極の最終端部、４……
補助電極リード、５……中心電極の始端部、６，
８……テーパ電極部、７，１０……階段部、９…
…最終テーパ電極部、Ｘ，Ｙ，Ｚ……合流点。
FIG. 1 is a plan view of a solar cell showing a conventional surface electrode, FIG. 2 is a plan view of a solar cell showing a surface electrode pattern according to the present invention, and FIG. 3 is an enlarged plan view of the main part of the same pattern. FIG. 4 is an explanatory plan view comparing the center electrode with the same pattern and a conventional example. 1... Semiconductor wafer, 2... Light irradiation surface, 3...
Center electrode, 3'... final end of center electrode, 4...
Auxiliary electrode lead, 5...starting end of center electrode, 6,
8...Tapered electrode part, 7, 10...Staircase part, 9...
...Final tapered electrode section, X, Y, Z...merging point.
Claims (1)
電極に合流点で接続される所望複数の補助電極
リードを形成した太陽電池において、第１合流
点を中心電極の始端部として、当該始端部から
第２合流点に向け広巾となる第１テーパ電極部
を形成し、第２合流点と第３合流点との間に
は、第１テーパ電極部の終端よりも広巾として
第１階段部を形成するようにした始端から第３
合流点に向け広巾となる第２テーパ電極部を形
成し、上記階段部を１段以上形成することによ
り最終階段部の始端から中心電極の最終端部に
向け広巾とした最終テーパ電極部を形成してな
る太陽電池の表面電極パターン。 (2) 第１合流点における中心電極の始端部巾を、
当該第１合流点に合流する補助電極リード巾の
和となし、所望数段設けられた各階段部におけ
る中心電極の始端巾を、当該階段部の前段テー
パ電極部巾と、同階段部に合流する補助電極リ
ード巾との和とした実用新案登録請求の範囲第
(1)項記載の太陽電池の表面電極パターン。[Claims for Utility Model Registration] (1) In a solar cell in which a center electrode and a desired plurality of auxiliary electrode leads are formed on the light irradiation surface of a semiconductor wafer, and a desired plurality of auxiliary electrode leads are connected to the central electrode at a confluence point, As the starting end of the electrode, a first tapered electrode part is formed which becomes wider from the starting end towards the second confluence point, and between the second confluence point and the third confluence point, a terminal end of the first tapered electrode part is formed. The third step from the starting end was made to form the first step part with a width wider than that of the third step.
By forming a second tapered electrode portion that becomes wider toward the confluence point, and forming one or more steps of the step portion, a final tapered electrode portion that becomes wider from the starting end of the final step portion to the final end of the center electrode is formed. The surface electrode pattern of a solar cell. (2) The width of the starting end of the center electrode at the first confluence point is
The sum of the widths of the auxiliary electrode leads that merge into the first merging point, and the width of the starting end of the center electrode in each of the staircase sections provided with a desired number of steps, the width of the front tapered electrode section of the staircase section, and the width of the leading edge of the center electrode that merges into the staircase section. The scope of the utility model registration claim, which is the sum of the auxiliary electrode lead width
The surface electrode pattern of the solar cell described in (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981002495U JPS629750Y2 (en) | 1981-01-12 | 1981-01-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981002495U JPS629750Y2 (en) | 1981-01-12 | 1981-01-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57117662U JPS57117662U (en) | 1982-07-21 |
| JPS629750Y2 true JPS629750Y2 (en) | 1987-03-06 |
Family
ID=29800931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981002495U Expired JPS629750Y2 (en) | 1981-01-12 | 1981-01-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629750Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4429306B2 (en) * | 2006-12-25 | 2010-03-10 | 三洋電機株式会社 | Solar cell and solar cell module |
| WO2010030109A2 (en) * | 2008-09-12 | 2010-03-18 | 주식회사 엘지화학 | Front electrode for solar cell which minimizes power loss, and solar cell including the same |
| JP2016178280A (en) * | 2014-11-28 | 2016-10-06 | 京セラ株式会社 | Solar cell element and solar cell module using the same |
| US11462652B2 (en) * | 2016-09-27 | 2022-10-04 | Lg Electronics Inc. | Solar cell and solar cell panel including the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS638149Y2 (en) * | 1979-03-24 | 1988-03-10 |
-
1981
- 1981-01-12 JP JP1981002495U patent/JPS629750Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57117662U (en) | 1982-07-21 |
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