JP2023549905A - 太陽光発電電池及び太陽光発電モジュール - Google Patents
太陽光発電電池及び太陽光発電モジュール Download PDFInfo
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- 238000002161 passivation Methods 0.000 claims abstract description 79
- 239000010410 layer Substances 0.000 claims description 126
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 64
- 229910052710 silicon Inorganic materials 0.000 claims description 64
- 239000010703 silicon Substances 0.000 claims description 64
- 239000000758 substrate Substances 0.000 claims description 64
- 239000002346 layers by function Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 31
- 238000004519 manufacturing process Methods 0.000 claims description 28
- 210000004027 cell Anatomy 0.000 abstract description 144
- 230000000694 effects Effects 0.000 abstract description 19
- 238000010521 absorption reaction Methods 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 210000005056 cell body Anatomy 0.000 abstract description 7
- 239000000969 carrier Substances 0.000 abstract description 6
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- 230000006798 recombination Effects 0.000 abstract description 4
- 238000005215 recombination Methods 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 description 14
- 229910021417 amorphous silicon Inorganic materials 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 229910052814 silicon oxide Inorganic materials 0.000 description 9
- 229910021419 crystalline silicon Inorganic materials 0.000 description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000708 deep reactive-ion etching Methods 0.000 description 2
- 238000000608 laser ablation Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910021418 black silicon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
Description
本願は、2020年11月18日に中国特許庁に提出された、出願番号が202011296656.4、名称が「太陽光発電電池及び太陽光発電モジュール」である中国特許出願の優先権を主張しており、そのすべての内容は引用により本願に組み込まれている。
電池本体を含み、
前記電池本体の少なくとも1つの面は第1領域と第2領域を含み、
前記第1領域はテキスチャ構造として構成され、
前記第2領域は、前記電池本体の表面における投影の寸法が0.5~100μmである複数のピットとして構成され、
前記電池本体の厚さ方向からの前記ピットの側壁のズレ角度が15度未満である太陽光発電電池を提供する。
隣接する前記ピットの間の間隔は2~200μmである。
前記第1電極の少なくとも一部は前記テキスチャ構造に設けられる。
前記不動態化層は前記テキスチャ構造と前記ピットの底面及び側壁上に設けられる。
Claims (18)
- 電池本体を含み、
前記電池本体の少なくとも1つの面は第1領域と第2領域を含み、
前記第1領域はテキスチャ構造として構成され、
前記第2領域は複数のピットとして構成され、
前記ピットは前記電池本体の表面における投影の寸法が0.5~100μmであり、
前記電池本体の厚さ方向からの前記ピットの側壁のズレ角度が15度未満であることを特徴とする太陽光発電電池。 - 前記電池本体の表面における前記ピットの投影の寸法は1μm以上20μm以下である請求項1に記載の太陽光発電電池。
- 前記複数のピットは前記電池本体の表面にアレイ状に分布しており、
隣接する前記ピットの間の間隔は2μm以上200μm以下であることを特徴とする請求項1に記載の太陽光発電電池。 - 前記電池本体の表面における前記ピットの投影面積と前記電池本体の表面積との比が0.4~0.85であることを特徴とする請求項1に記載の太陽光発電電池。
- 前記ピットの深さが0.1μm以上であることを特徴とする請求項1~4のいずれか1項に記載の太陽光発電電池。
- 前記ピットは円形孔、矩形孔又は非規則形状の孔のうちのいずれか又は複数を含むことを特徴とする請求項1~4のいずれか1項に記載の太陽光発電電池。
- 前記電池本体は第1電極を含み、
前記第1電極の少なくとも一部は前記テキスチャ構造に設けられることを特徴とする請求項1~4のいずれか1項に記載の太陽光発電電池。 - 不動態化層をさらに含み、
前記不動態化層は前記テキスチャ構造と前記ピットの底面及び側壁上に設けられることを特徴とする請求項7に記載の太陽光発電電池。 - 前記第1電極は第1バスバーと第1フィンガーを含み、前記第1バスバーは前記テキスチャ構造及び/又は前記ピットに設けられ、前記第1フィンガーは前記テキスチャ構造に設けられることを特徴とする請求項7に記載の太陽光発電電池。
- 前記太陽光発電電池は片面電極を有する太陽光発電電池であり、
前記電池本体はシリコンウエハ基板と、シリコンウエハ基板の一方の面に設けられる第1不動態化層及び第3機能層と、シリコンウエハ基板の他方の面に設けられる第2不動態化層、第4機能層、第3電極及び第4電極と、を含むことを特徴とする請求項1に記載の太陽光発電電池。 - 前記第3電極と前記第2不動態化層との間に第1収集層及び第1輸送層が設けられており、前記第1収集層は前記第2不動態化層のシリコンウエハ基板から離れた面に設けられ、前記第1輸送層は前記第1収集層の前記第2不動態化層から離れた面に設けられ、
前記第4電極と前記第2不動態化層との間に第2収集層及び第2輸送層が設けられており、前記第2収集層は前記第2不動態化層のシリコンウエハ基板から離れた面に設けられ、前記第2輸送層は前記第2収集層の前記第2不動態化層から離れた面に設けられることを特徴とする請求項10に記載の太陽光発電電池。 - 電池本体の一方の面に分布しているピラミッド状及び/又は逆ピラミッド状構造からなるテキスチャ構造を前記電池本体の少なくとも1つの面に製造するステップと、
前記電池本体の表面に複数のミクロンレベルのピットを製造するステップと、を含むことを特徴とする太陽光発電電池の製造方法。 - 電池本体の少なくとも1つの面にテキスチャ構造を製造する前記ステップは、
前記電池本体のシリコンウエハ基板の少なくとも1つの面に前記テキスチャ構造を製造するステップを含むことを特徴とする請求項12に記載の方法。 - 前記電池本体の表面に複数のミクロンレベルのピットを製造する前記ステップは、
前記シリコンウエハ基板の表面に複数のピットを製造するステップを含むことを特徴とする請求項13に記載の方法。 - 前記テキスチャ構造と前記ピットの側壁及び底面上に不動態化層を製造するステップをさらに含むことを特徴とする請求項12に記載の方法。
- 前記テキスチャ構造上及び前記ピット内に第1電極を製造するとともに、前記シリコンウエハ基板の他方の面に第2電極を製造するステップをさらに含むことを特徴とする請求項12に記載の方法。
- 電池本体のシリコンウエハ基板の少なくとも1つの面にテキスチャ構造を製造するステップと、
前記シリコンウエハ基板の表面に複数のピットを製造するステップと、
前記テキスチャ構造と前記ピットの側壁及び底面上に第1不動態化層を製造し、前記第1不動態化層上に第3機能層を製造するステップと、
前記シリコンウエハ基板の他方の面上に第2不動態化層を製造し、前記第2不動態化層上に第4機能層を製造するステップと、
前記シリコンウエハ基板の他方の面に第3電極及び第4電極を製造するステップと、を含むことを特徴とする製造方法。 - 請求項1~11のいずれか1項に記載の太陽光発電電池を含むことを特徴とする太陽光発電モジュール。
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PCT/CN2021/131407 WO2022105821A1 (zh) | 2020-11-18 | 2021-11-18 | 一种光伏电池及光伏组件 |
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JP3698746B2 (ja) * | 1994-11-30 | 2005-09-21 | シャープ株式会社 | 太陽電池とその製造方法 |
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JP3493951B2 (ja) * | 1997-05-13 | 2004-02-03 | 松下電器産業株式会社 | シリコン基板の異方性エッチング方法及び太陽電池の製造方法 |
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