JP7129786B2 - 構造を改善した太陽電池及びこれを用いた太陽電池モジュール - Google Patents
構造を改善した太陽電池及びこれを用いた太陽電池モジュール Download PDFInfo
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Description
[関連出願]
本願は、韓国特許出願第10-2017-0019663に基づくパリ条約の優先権主張を伴うものであり、本願発明の内容は、当該韓国特許出願に開示された全てのものを包含するものである。
〔本発明の一の態様〕
〔1〕 太陽電池モジュールであって、
半導体基板と、前記半導体基板上に第1方向に交互に位置し、前記第1方向と交差する第2方向に長く形成された第1電極と第2電極をそれぞれ備えた複数の太陽電池と、
前記複数の太陽電池のそれぞれに前記第1電極及び前記第2電極に交差するように、第1方向に長く位置し、前記第1電極と交差する交差点で第1導電層によって接続され、前記第2電極と交差する交差点で絶縁層によって前記第2電極と絶縁される第1導電性配線と、
前記第1導電性配線と並行するように位置し、前記第2電極と交差する交差点で前記第1導電層によって接続され、前記第1電極と交差する交差点で前記絶縁層によって前記第1電極と絶縁される第2導電性配線とを備えてなり、
前記第1電極及び前記第2電極はそれぞれ、隣接した第1電極同士又は第2電極同士を接続するブリッジ電極を備えてなり、
前記第1導電性配線及び前記第2導電性配線のそれぞれは、第2導電層により前記ブリッジ電極に接合されてなるものである、太陽電池モジュール。
〔2〕 前記ブリッジ電極は、前記半導体基板の第1側面に隣接した少なくとも2以上の第1電極を接続する第1ブリッジ電極と、前記第1側面に対向する第2側面に隣接した少なくとも2以上の第2電極を接続する第2ブリッジ電極を備えてなり、
前記第1ブリッジ電極は、前記第1導電性配線の開始端部が位置するところに形成されてなり、
前記第2ブリッジ電極は、前記第2導電性配線の開始端部が位置するところに形成されてなるものである、〔1〕に記載の太陽電池モジュール。
〔3〕 前記第1ブリッジ電極及び前記第2ブリッジ電極はそれぞれ、前記第2側面に直接隣接した位置において前記第1電極を接続するか、前記第1側面に直接隣接した位置において前記第2電極を接続する第3ブリッジ電極をさらに備えてなり、
前記第1ブリッジ電極及び前記第2ブリッジ電極はそれぞれ、前記第1側面と前記第2側面との間に位置して前記第1電極又は前記第2電極を接続する第4ブリッジ電極をさらに備えてなる、〔2〕に記載の太陽電池モジュール。
〔4〕 前記第1ブリッジ電極の長さは、前記第1電極間の距離と同じであり、
前記第2ブリッジ電極の長さは、前記第2電極間の距離と同じである、〔2〕又は〔3〕に記載の太陽電池モジュール。
〔5〕 前記第1方向での前記第2導電層の幅は、前記第1導電層の幅より大きいものである、〔1〕~〔4〕の何れか一項に記載の太陽電池モジュール。
〔6〕 前記第1導電性配線及び第2導電性配線の各々は、導電性金属と導電性金属を被覆するはんだ層を備えてなり、
前記第1導電層と前記第2導電層はそれぞれ、前記はんだ層の融点より高い融点を有するはんだ物質からなるものである、〔1〕~〔5〕の何れか一項に記載の太陽電池モジュール。
〔7〕 前記第1導電層は、前記第1電極又は前記第2電極に接合された第1層と、
前記第1層より融点が低く、前記第1層上に形成された第2層とを備えてなる、〔6〕に記載の太陽電池モジュール。
〔8〕 前記第2導電層は、前記第1導電層と同様に、前記第1層と前記第2層を備えてなるか、或いは、前記第1層と同一の物質で形成されてなるものである、〔7〕に記載の太陽電池モジュール。
〔9〕 前記第2層は、前記はんだ層と同一の物質で形成されたものである、〔8〕に記載の太陽電池モジュール。
〔10〕 前記複数の太陽電池の各々は、
前記半導体基板の後面上に形成され、前記第1電極と前記第2電極にそれぞれ接続された第1導電型領域と第2導電型領域を備えた半導体層と、
前記半導体層を覆うパッシベーション膜とを備えてなり、
前記ブリッジ電極は、前記パッシベーション膜上に形成されたものである、〔1〕~〔9〕の何れか一項に記載された、太陽電池モジュール。
〔11〕 前記第1電極と前記第2電極はそれぞれ、前記ブリッジ電極の線幅より大きい幅を有してなり、前記ブリッジ電極と交差するように前記第2方向に形成された断線部を備えてなり、
前記第1導電型領域と前記第2導電型領域はそれぞれ、前記断線部にも形成されてなるものである、〔10〕に記載の太陽電池モジュール。
〔12〕 太陽電池であって、
半導体基板と、
前記半導体基板の後面上に形成され、第1導電型領域と第2導電型領域を備えた半導体層と、
前記半導体層上に第1方向に交互に位置し、前記第1方向と交差する第2方向に長く形成された第1電極と第2電極とを備えてなり、
前記第1電極及び前記第2電極はそれぞれ、隣接した第1電極同士又は第2電極同士を接続するブリッジ電極をさらに備えてなり、
前記ブリッジ電極は、前記半導体基板の第1側面に隣接した少なくとも2以上の第1電極を接続する第1ブリッジ電極と、前記第1側面に対向する第2側面に隣接した少なくとも2以上の第2電極を接続する第2ブリッジ電極を備えてなる、太陽電池。
〔13〕 前記第1ブリッジ電極及び第2ブリッジ電極はそれぞれ、前記第2側面に隣接した位置において前記第1電極を接続するか、前記第1側面に隣接した位置において前記第2電極を接続する第3ブリッジ電極をさらに備えてなる、〔12〕に記載の太陽電池(モジュール)。
〔14〕 前記第1電極と前記第2電極はそれぞれ、前記第1ブリッジ電極及び第2ブリッジ電極の線幅より大きい幅を有してなり、前記ブリッジ電極と交差して前記第2方向に形成された断線部を備えてなり、
前記第1導電型領域と第2導電型領域はそれぞれ、前記断線部にも形成されたものである、〔12〕又は〔13〕に記載の太陽電池(モジュール)。
〔15〕 前記半導体層上に形成され、前記第1導電型領域と前記第2導電型領域を露出させて前記第1電極及び前記第2電極とそれぞれ接続させる接触口が形成されたパッシベーション膜さらに備えてなり、
前記ブリッジ電極は、前記パッシベーション膜上に形成されたものである、〔12〕~〔14〕の何れか一項に記載の太陽電池。
Claims (9)
- 太陽電池モジュールであって、
半導体基板と、
前記半導体基板上に第1方向に交互に位置し、前記第1方向と交差する第2方向に長く形成された第1電極及び第2電極の其々を備えた複数の太陽電池と、
前記複数の太陽電池の其々に前記第1電極及び前記第2電極に交差するように、第1方向に長く位置し、前記第1電極と交差する交差点で第1導電層によって接続され、前記第2電極と交差する交差点で絶縁層によって前記第2電極と絶縁される第1導電性配線と、
前記第1導電性配線と並行するように位置し、前記第2電極と交差する交差点で前記第1導電層によって接続され、前記第1電極と交差する交差点で前記絶縁層によって前記第1電極と絶縁される第2導電性配線と、を備えてなり、
前記第1電極及び前記第2電極の其々は、隣接した第1電極同士又は第2電極同士を接続するブリッジ電極を備え、
前記第1導電性配線及び前記第2導電性配線の其々は、第2導電層により前記ブリッジ電極に接合され、
前記太陽電池は、前記第1方向に第1側面と、前記第1側面に対向する第2側面と、を備え、
前記ブリッジ電極は、前記第1電極の内、
前記半導体基板の第1側面に最も近接して配置される2つ以上の第1電極を接続する第1ブリッジ電極と、
前記第2側面に最も近接して配置される2つ以上の第2電極を接続する第2ブリッジ電極と、を備え、
前記第1導電性配線の端部は前記第1ブリッジ電極に接合され、
前記第2導電性配線の端部は前記第2ブリッジ電極に接合され、
第1方向において、第2導電層の幅は、第1導電層の幅より大きい、太陽電池モジュール。 - 前記ブリッジ電極は、前記第2側面に最も近接して配置される2つ以上の第1電極を接続するか、前記第1側面に最も近接して配置される2つ以上の第2電極を接続する、第3ブリッジ電極を更に備え、
前記ブリッジ電極は、前記第1ブリッジ電極と前記第2ブリッジ電極との間に位置して、前記第1電極又は前記第2電極を接続する、第4ブリッジ電極を更に備える、請求項1に記載の太陽電池モジュール。 - 前記第1ブリッジ電極の長さは、前記第1電極間の距離と同じであり、
前記第2ブリッジ電極の長さは、前記第2電極間の距離と同じである、請求項1に記載の太陽電池モジュール。 - 前記第1導電性配線及び第2導電性配線の其々は、導電性金属と導電性金属を被覆するはんだ層を備えてなり、
前記第1導電層及び前記第2導電層の其々は、前記はんだ層の融点より高い融点を有するはんだ物質からなるものである、請求項1に記載の太陽電池モジュール。 - 前記第1導電層は、前記第1電極又は前記第2電極に接合された第1層と、
前記第1層より融点が低く、前記第1層上に形成された第2層と、を備える、請求項4に記載の太陽電池モジュール。 - 前記第2導電層は、前記第1導電層と同様に、前記第1層と前記第2層を備えるか、前記第1層と同一の物質で形成されたものである、請求項5に記載の太陽電池モジュール。
- 前記第2層は、前記はんだ層と同一の物質で形成されたものである、請求項6に記載の太陽電池モジュール。
- 前記複数の太陽電池の其々は、
前記半導体基板の後面上に形成され、前記第1電極と前記第2電極に其々接続された第1導電型領域と第2導電型領域を備えた半導体層と、
前記半導体層を覆うパッシベーション膜と、を備え、
前記ブリッジ電極は、前記パッシベーション膜上に形成されたものである、請求項1に記載された、太陽電池モジュール。 - 前記第1電極及び前記第2電極の其々は、前記ブリッジ電極の線幅より小さい線幅を有してなり、前記ブリッジ電極と交差するように前記第2方向に形成された断線部を備え、
前記第1導電型領域及び前記第2導電型領域の其々は、前記断線部にも形成されたものである、請求項8に記載の太陽電池モジュール。
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