JP7064591B2 - 薄膜太陽電池の製造方法及び薄膜太陽電池 - Google Patents
薄膜太陽電池の製造方法及び薄膜太陽電池 Download PDFInfo
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Description
透明基板を提供し、表示モジュールに向かう透明基板の一方側に、前面電極、光吸収層及び裏面電極を順次堆積して成膜するステップS100と、
裏面電極、光吸収層及び前面電極を順次エッチングするステップS200と、
前記裏面電極と光吸収層を覆い、前面電極に接触して接続するまで延びている絶縁層を成膜により製造するステップS300と、
絶縁層上に、前面電極に接触するまで延びている金属補助電極を成膜してエッチングする、ステップS400と、を含み、
前記絶縁層の製造過程において、前記絶縁層の外周と前面電極との間に、角度範囲35°~75°のTaper角を形成することを特徴とする。
1、前記絶縁層の外周と前面電極との間に角度範囲35°~75°のTaper角を形成することで、最大の太陽光吸収面積と最低の金属補助電極の反射視認性を両立させ、且つ製品の信頼性を確保することができる。
2、裏面電極と光吸収層にビア領域が開口し、前記絶縁層がビア領域を不完全に充填することで、前記金属補助電極をビア領域で前面電極と接触させ、それによって、前面電極の抵抗をさらに低減させる。
図1-図3に示されるように、本発明の実施例は、薄膜太陽電池の製造方法を提供し、薄膜太陽電池は、透明基板10と、前記透明基板10上に設けられ、表示モジュールに向かって配置される太陽光ユニットと、を備え、前記太陽光ユニットは、前記透明基板上に設けられる前面電極20、前記前面電極20上に設けられる光吸収層30、及び前記光吸収層30上に設けられる裏面電極40を備え、絶縁層50と金属補助電極60をさらに備え、前記絶縁層50は、前記裏面電極40及び光吸収層30を覆い、前面電極20に接触して接続するまで延びており、前記金属補助電極60は、前面電極20に接触して接続され、絶縁層50まで延びている。
図1-図3に示されるように、本発明の実施例2は、薄膜太陽電池を提供し、前記薄膜太陽電池は、表示モジュールの表示面側に設けられ、透明基板10と、前記透明基板10上に設けられ、表示モジュールに向かって配置される太陽光ユニットと、を備え、前記太陽光ユニットは、前記透明基板10上に設けられる前面電極20、前記前面電極20上に設けられる光吸収層30、及び前記光吸収層30上に設けられる裏面電極40を備える。
Claims (9)
- 薄膜太陽電池の製造方法であって、
透明基板を提供し、表示モジュールに向かう透明基板の一方側に、前面電極、光吸収層及び裏面電極を順次堆積して成膜するステップS100と、
裏面電極、光吸収層及び前面電極を順次エッチングするステップS200と、
前記裏面電極と光吸収層を覆い、前面電極に接触して接続するまで延びている絶縁層を成膜により製造するステップS300と、
絶縁層上に、前面電極に接触するまで延びている金属補助電極を成膜してエッチングする、ステップS400と、を含み、
前記絶縁層の製造過程において、前記絶縁層の外周と前面電極との間に、角度範囲35°~75°のTaper角を形成し、
前記金属補助電極の製造過程において、前記絶縁層において前記Taper角が形成された面上から前記前面電極まで延在するように形成する
ことを特徴とする薄膜太陽電池の製造方法。 - ステップS200では、前記裏面電極と光吸収層には、ビア領域がさらに開口しており、ステップS300では、前記絶縁層は、ビア領域において前面電極に接触するまで延びている、
ことを特徴とする請求項1に記載の薄膜太陽電池の製造方法。 - 前記絶縁層は、ビア領域を不完全に充填することで、前記金属補助電極をビア領域で前面電極に接触させる、
ことを特徴とする請求項2に記載の薄膜太陽電池の製造方法。 - 前面電極を製造する前に、透明基板に対してセル分割ラインの遮蔽層を製造する、
ことを特徴とする請求項1に記載の薄膜太陽電池の製造方法。 - 前記金属補助電極を製造した後、前記金属補助電極を覆う反射防止層を製造する、
ことを特徴とする請求項1に記載の薄膜太陽電池の製造方法。 - 薄膜太陽電池であって、透明基板と、前記透明基板上に設けられ、表示モジュールに向かって配置される太陽光ユニットと、を備え、前記太陽光ユニットは、前記透明基板上に設けられる前面電極、前記前面電極上に設けられる光吸収層、及び前記光吸収層上に設けられる裏面電極を備え、金属補助電極と絶縁層をさらに備え、前記絶縁層は、前記裏面電極及び光吸収層を覆い、前面電極に接触して接続するまで延びており、前記金属補助電極は、前面電極に接触して接続され、絶縁層まで延びており、前記絶縁層の外周と前面電極との間に、角度範囲35°~75°のTaper角が形成され、前記金属補助電極は、前記絶縁層において前記Taper角が形成された面上から前記前面電極まで延在するように形成される
ことを特徴とする薄膜太陽電池。 - 前記裏面電極と光吸収層には、ビア領域がさらに開口しており、前記絶縁層は、ビア領域において前面電極に接触して接続される、
ことを特徴とする請求項5に記載の薄膜太陽電池。 - 前記絶縁層は、ビア領域を不完全に充填し、そして、前記金属補助電極は、ビア領域で前面電極に接触する、
ことを特徴とする請求項6に記載の薄膜太陽電池。 - 前記金属補助電極には、前記金属補助電極を覆う反射防止層がさらに設けられる、
ことを特徴とする請求項5-7のいずれか一項記載の薄膜太陽電池。
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- 2019-06-03 US US16/770,082 patent/US20200381578A1/en not_active Abandoned
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