JP2016127276A - 太陽電池電極形成用組成物およびこれを用いて製造された電極 - Google Patents
太陽電池電極形成用組成物およびこれを用いて製造された電極 Download PDFInfo
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- JP2016127276A JP2016127276A JP2015241516A JP2015241516A JP2016127276A JP 2016127276 A JP2016127276 A JP 2016127276A JP 2015241516 A JP2015241516 A JP 2015241516A JP 2015241516 A JP2015241516 A JP 2015241516A JP 2016127276 A JP2016127276 A JP 2016127276A
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- Prior art keywords
- solar cell
- composition
- glass frit
- cell electrode
- electrode
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
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Abstract
Description
本発明の太陽電池電極形成用組成物は、銀(Ag)粉末;ガラスフリット;有機シラン化合物;および有機ビヒクルを含んでもよい。
本発明の太陽電池電極形成用組成物は、導電性粉末として銀(Ag)粉末を使用する。銀粉末としては、ナノサイズまたはマイクロサイズの粒径を有する粉末であってもよいが、例えば、数十ナノメートル〜数百ナノメートルサイズの銀粉末、数マイクロメートル〜数十マイクロメートルの銀粉末であってもよい。また、銀粉末は、2以上の互いに異なるサイズを有する銀粉末を混合して使用してもよい。
本発明で用いられるガラスフリットは、テルルを含み、ガラス転移温度(Tg)が150〜300℃である。
有機シラン化合物は、太陽電池電極形成用組成物の印刷時に線幅を制御し、高アスペクト比の微細パターンを具現するために導入されたものである。
有機ビヒクルは、太陽電池電極形成用組成物の無機成分との機械的混合を通じて組成物に印刷に適した粘度および流動学的特性を付与する。
本発明の太陽電池電極形成用組成物は、上述した構成要素の他に、流動特性、工程特性および安定性を向上させるために、必要に応じて、通常の添加剤をさらに含んでもよい。添加剤としては、分散剤、揺変剤、可塑剤、粘度安定化剤、消泡剤、顔料、紫外線安定剤、酸化防止剤、カップリング剤などを単独でまたは2種以上混合して使用してもよい。これらは、太陽電池電極形成用組成物の全体重量に対して0.1〜5重量%で含まれてもよいが、必要に応じて含量を変更してもよい。
本発明の他の実施形態は、前記太陽電池電極形成用組成物を用いて形成された電極およびこれを含む太陽電池に関する。
実施例1
有機バインダーとしてエチルセルロース(Dowchemical社、STD4)1.0重量%を、溶媒であるテキサノール(Texanol)(登録商標)6.65重量%に60℃で十分に溶解した後、平均粒径(体積換算)が2.0μmである球状の銀粉末(Dowa Hightech CO.LTD、AG−5−11F)89.0重量%、下記の表1の組成で製造されたガラスフリットI(平均粒径(体積換算)2.5μm) 2.5重量%、有機シラン化合物としてポリジメチルシロキサン(Evonik社、TEGO(登録商標)Glide410)(I)0.05重量%、添加剤として分散剤BYK102(BYK−chemie)0.4重量%、および揺変剤Thixatrol(登録商標)ST(Elementis co.)0.4重量%を投入して均一にミキシングした後、3本ロール混練器で混合・分散させることによって太陽電池電極形成用組成物を製造した。
下記の表2の組成で太陽電池電極形成用組成物を製造したことを除いては、実施例1と同一の方法で太陽電池を製造した後で物性を測定し、その結果値を下記の表4に示した。
有機シラン化合物としてヘキサメチルジシロキサン(Evonik社、TEGO(登録商標)Flow ATF2)(II)を使用し、下記の表2の組成で太陽電池電極形成用組成物を製造したことを除いては、実施例1と同一の方法で太陽電池を製造した後で物性を測定し、その結果値を下記の表4に示した。
下記の表1のガラスフリットIIおよび下記の表2の組成で太陽電池電極形成用組成物を製造したことを除いては、実施例1と同一の方法で太陽電池を製造した後で物性を測定し、その結果値を下記の表4に示した。
下記の表1のガラスフリットおよび下記の表3の組成で太陽電池電極形成用組成物を製造したことを除いては、実施例1と同一の方法で太陽電池を製造した後で物性を測定し、その結果値を下記の表5に示した。
微細パターン評価:製造した電極(finger bar)ラインの焼成前・後の線幅および厚さをVK装備(KEYENCE社のVK9710)を用いて測定し、その結果を下記の表4および5に示した。
101 p層(またはn層)、
102 n層(またはp層)、
210 後面電極、
230 前面電極、
300 光。
Claims (11)
- 銀粉末、
テルルを含みガラス転移温度(Tg)が150〜300℃であるガラスフリット、
有機シラン化合物、および
有機ビヒクル、を含む、太陽電池電極形成用組成物。 - 前記銀粉末60〜95重量%、
前記ガラスフリット0.1〜20重量%、
前記有機シラン化合物0.01〜3重量%、および
前記有機ビヒクル1〜30重量%を含む、請求項1に記載の太陽電池電極形成用組成物。 - 前記ガラスフリットは、Bi−Te−O系ガラスフリットであって、構成する元素の合計モル数(酸化物換算)を100モル%として、テルル(Te)元素(酸化物換算)を50〜90モル%含む、請求項1または2に記載の太陽電池電極形成用組成物。
- 前記Bi−Te−O系ガラスフリットは、ビスマス(Bi)原子:テルル(Te)原子のモル比(酸化物換算)が1:1.5〜1:3.5である、請求項3に記載の太陽電池電極形成用組成物。
- 前記ガラスフリットは、無鉛ガラスフリットである、請求項1〜4のいずれか1項に記載の太陽電池電極形成用組成物。
- 前記有機シラン化合物は、下記の化学式1:
で表されるシロキサン化合物を含む、請求項1〜5のいずれか1項に記載の太陽電池電極形成用組成物。 - 前記Bi−Te−O系ガラスフリットは、リチウム(Li)、リン(P)、ゲルマニウム(Ge)、ガリウム(Ga)、セリウム(Ce)、鉄(Fe)、ケイ素(Si)、亜鉛(Zn)、タングステン(W)、マグネシウム(Mg)、セシウム(Cs)、ストロンチウム(Sr)、モリブデン(Mo)、チタン(Ti)、スズ(Sn)、インジウム(In)、バナジウム(V)、バリウム(Ba)、ニッケル(Ni)、銅(Cu)、ナトリウム(Na)、カリウム(K)、ヒ素(As)、コバルト(Co)、ジルコニウム(Zr)、マンガン(Mn)およびアルミニウム(Al)からなる群から選ばれた1種以上の元素をさらに含む、請求項3〜6のいずれか1項に記載の太陽電池電極形成用組成物。
- 前記ガラスフリットは、平均粒径(D50)が0.1〜10μmであることを特徴とする、請求項1〜7のいずれか1項に記載の太陽電池電極形成用組成物。
- 揺変剤、粘度安定化剤、消泡剤、顔料、紫外線安定剤、酸化防止剤およびカップリング剤からなる群から選ばれる添加剤を1種以上さらに含む、請求項1〜8のいずれか1項に記載の太陽電池電極形成用組成物。
- 請求項1〜9のいずれか1項に記載の太陽電池電極形成用組成物を用いて製造された太陽電池電極。
- 下記の式1:
で表されるアスペクト比が0.1〜0.3である、太陽電池電極。
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CN105741905B (zh) | 2018-11-06 |
KR101696985B1 (ko) | 2017-01-17 |
JP6785042B2 (ja) | 2020-11-18 |
TWI622180B (zh) | 2018-04-21 |
KR20160083354A (ko) | 2016-07-12 |
TW201635572A (zh) | 2016-10-01 |
US9997648B2 (en) | 2018-06-12 |
CN108269643A (zh) | 2018-07-10 |
US20160190360A1 (en) | 2016-06-30 |
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