JP7307245B1 - 光起電力セル及びその形成方法、光起電力モジュール - Google Patents
光起電力セル及びその形成方法、光起電力モジュール Download PDFInfo
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Abstract
Description
Claims (19)
- 基板と、
前記基板の表面に位置し、光起電力セルの製品情報をマーキングするために使われるマーク領域と、
前記基板の表面にある前記マーク領域に位置し、少なくとも1つの第1突起構造と少なくとも1つの第2突起構造を含み、前記第1突起構造の上面が前記第1突起構造の底面方向へ延びる凹面であり、前記第2突起構造がピラミッド状構造である第1テクスチャ構造と、
前記マーク領域以外の前記基板の表面に位置し、少なくとも1つの第3突起構造を含み、且つ前記第3突起構造がピラミッド状構造である第2テクスチャ構造と、を含む、
ことを特徴とする光起電力セル。 - 前記第1突起構造はトップに前記凹面を有するピラミッド状構造である、ことを特徴とする請求項1に記載の光起電力セル。
- 前記第1突起構造の側壁と前記第1突起構造の底面との夾角は30°~60°である、ことを特徴とする請求項2に記載の光起電力セル。
- 前記基板が前記第1テクスチャ構造に向かう方向において、前記第1突起構造の上面が前記第1突起構造に隣接する前記第2突起構造の上面より低い、ことを特徴とする請求項1に記載の光起電力セル。
- 前記第1突起構造の上面は半球状凹面又は円錐状凹面である、ことを特徴とする請求項1に記載の光起電力セル。
- 前記基板が前記第1テクスチャ構造に向かう方向において、前記第1突起構造の上面から前記第1突起構造の底面までの最小距離と最大距離の比は85%以下である、ことを特徴とする請求項1に記載の光起電力セル。
- 前記基板が前記第1テクスチャ構造に向かう方向において、前記第1突起構造の上面から前記第1突起構造の底面までの最小距離の範囲は3μm~5μmである、ことを特徴とする請求項1に記載の光起電力セル。
- 前記第1テクスチャ構造は複数の前記第2突起構造を含み、且つ複数の前記第2突起構造が前記第1突起構造の周りに設けられる、ことを特徴とする請求項1に記載の光起電力セル。
- 前記第1テクスチャ構造は離隔して設けられた複数の前記第1突起構造を含み、且つ隣接する前記第1突起構造間に少なくとも1つの前記第2突起構造を持つ、
ことを特徴とする請求項1に記載の光起電力セル。
- 少なくとも1つの前記第2突起構造は第1ピラミッド構造であり、前記基板が前記第1テクスチャ構造に向かう方向において、前記第1ピラミッド構造のトップと前記基板の表面との距離は5μm~6μmである、
ことを特徴とする請求項1に記載の光起電力セル。
- 別の少なくとも1つの前記第2突起構造は第2ピラミッド構造であり、前記第2ピラミッド構造のトップは前記第1ピラミッド構造のトップより低く、且つ前記第2ピラミッド構造は少なくとも1つの前記第1ピラミッド構造に隣接する、
ことを特徴とする請求項10に記載の光起電力セル。
- 前記第2ピラミッド構造は傾斜部を含み、前記傾斜部の側壁は前記基板の表面に対して傾斜し、前記基板が前記第1テクスチャ構造に向かう方向において、前記傾斜部の高さは1μm~2μmである、
ことを特徴とする請求項11に記載の光起電力セル。
- 前記第1テクスチャ構造と前記第2テクスチャ構造の接続は少なくとも1つの前記第1突起構造と少なくとも1つの前記第3突起構造の接続であり、前記第3突起構造のピラミッド状構造の底面は前記第2突起構造のピラミッド状構造の底面より低い、
ことを特徴とする請求項1に記載の光起電力セル。 - 前記基板の表面には、複数のグリッド電極を設けられ、前記マーク領域は少なくとも1つの前記グリッド電極と重なり、且つ、前記マーク領域と重なる少なくとも1つの前記グリッド電極の数は1~5本である、
ことを特徴とする請求項1に記載の光起電力セル。 - 前記基板の表面には、複数のグリッド電極を設けられ、前記マーク領域は前記複数のグリッド電極間に位置し、且つ複数の前記マーク領域は前記複数のグリッド電極と重ならない、
ことを特徴とする請求項1に記載の光起電力セル。 - 基板を提供することと、
前記基板の表面にマーク領域を形成することと、
前記基板の表面の前記マーク領域に第1テクスチャ構造を形成し、前記第1テクスチャ構造は少なくとも1つの第1突起構造と少なくとも1つの第2突起構造を含み、前記第1突起構造の上面が前記第1突起構造の底面方向へ延びる凹面であり、前記第2突起構造がピラミッド状構造であることと、
前記マーク領域以外の前記基板の表面に第2テクスチャ構造を形成し、前記第2テクスチャ構造は少なくとも1つの第3突起構造を含み、且つ前記第3突起構造はピラミッド状構造であることと、を含む、
ことを特徴とする光起電力セルの形成方法。 - 前記マーク領域を形成する方法は、レーザーを用いて前記基板の表面に前記マーク領域を形成することを含む、
ことを特徴とする請求項16に記載の光起電力セルの形成方法。 - 前記レーザーの波長は1060nmであり、パルス持続時間は10~100nsであり、パルス繰り返し周波数は500~2000kHzであり、レーザーパワー比率は70~75%である、
ことを特徴とする請求項17に記載の光起電力セルの形成方法。 - 請求項1~15のいずれか1項に記載の光起電力セルを備えるセルストリングと、
前記セルストリングの表面を覆う封止層と、
前記封止層の前記セルストリングから離れる表面を覆うためのカバープレートと、を含む、
ことを特徴とする光起電力モジュール。
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