JP6395941B2 - 太陽電池セルおよび太陽電池セルの製造方法 - Google Patents
太陽電池セルおよび太陽電池セルの製造方法 Download PDFInfo
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 56
- 229910052710 silicon Inorganic materials 0.000 description 56
- 239000010703 silicon Substances 0.000 description 56
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 27
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
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- RLOWWWKZYUNIDI-UHFFFAOYSA-N phosphinic chloride Chemical compound ClP=O RLOWWWKZYUNIDI-UHFFFAOYSA-N 0.000 description 3
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 2
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- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
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- -1 for example Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- QOSATHPSBFQAML-UHFFFAOYSA-N hydrogen peroxide;hydrate Chemical compound O.OO QOSATHPSBFQAML-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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- VSAISIQCTGDGPU-UHFFFAOYSA-N tetraphosphorus hexaoxide Chemical compound O1P(O2)OP3OP1OP2O3 VSAISIQCTGDGPU-UHFFFAOYSA-N 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
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- 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
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
- H01L31/04—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 adapted as photovoltaic [PV] conversion devices
- H01L31/06—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers
- H01L31/068—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN homojunction type, e.g. bulk silicon PN homojunction solar cells or thin film polycrystalline silicon PN homojunction solar cells
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Description
図1は、本発明の実施の形態にかかる太陽電池セル1を受光面側から見た上面模式図である。図2は、本発明の実施の形態にかかる太陽電池セル1を受光面と対向する裏面側から見た下面模式図である。図3は、本発明の実施の形態にかかる太陽電池セル1の要部断面模式図であり、図1のA−A方向における太陽電池セル1の要部断面図である。
Claims (13)
- 第1導電型の半導体基板と、
前記半導体基板の一面側に第1導電型または第2導電型の不純物元素が拡散された不純物拡散層と、
前記一面側に配置されて前記不純物拡散層に電気的に接続するペースト電極であって前記半導体基板の面方向における特定方向に第1の配置間隔で平行に延在して線状形状を有する複数本のグリッド電極と、
を備え、
前記不純物拡散層は、前記グリッド電極の下部領域に第1導電型または第2導電型の前記不純物元素を第1濃度で含んで線状形状を有する、前記半導体基板の面方向において前記特定方向に平行に延在する複数本の第1不純物拡散層と、前記第1不純物拡散層と同じ導電型の前記不純物元素を前記第1濃度よりも低い第2濃度で含む第2不純物拡散層とを有し、
前記グリッド電極は、前記グリッド電極の側面から前記グリッド電極の延在方向と交差する方向に突出するとともに前記グリッド電極の延在方向に沿って配置された複数の突出部を有し、
前記複数の突出部は、前記グリッド電極の延在方向において前記半導体基板の一面側における特定の基準位置から離れるに従って前記グリッド電極の側面からの突出長さが長くなること、
を特徴とする太陽電池セル。 - 前記特定の基準位置は、前記第1不純物拡散層と前記グリッド電極との位置合わせ精度が最も高い位置であること、
を特徴とする請求項1に記載の太陽電池セル。 - 前記複数の突出部は、前記グリッド電極の延在方向において前記特定の基準位置からの距離に正比例して前記突出長さが長くなること、
を特徴とする請求項2に記載の太陽電池セル。 - 前記突出部は、前記グリッド電極の延在方向において前記特定の基準位置を挟んで対称であること、
を特徴とする請求項3に記載の太陽電池セル。 - 前記突出部は、前記グリッド電極の延在方向において前記特定の基準位置を挟んで対向する前記グリッド電極の2つの領域において、少なくとも前記グリッド電極の両側面のうちそれぞれ異なる側面に配置されていること、
を特徴とする請求項3に記載の太陽電池セル。 - 前記第1不純物拡散層は、前記グリッド電極と同じ幅を有すること、
を特徴とする請求項1から5のいずれか1つに記載の太陽電池セル。 - 前記グリッド電極の幅に対する前記突出部の幅の比率が、0.3以上、1以下であること、
を特徴とする請求項1に記載の太陽電池セル。 - 前記突出長さは、前記第1の配置間隔よりも小さいこと、
を特徴とする請求項1に記載の太陽電池セル。 - 前記第1の配置間隔に対する前記突出長さの比率が、0.6以下であること、
を特徴とする請求項8に記載の太陽電池セル。 - 前記第1の配置間隔に対する前記突出長さの比率が、0.05以上、0.3以下であること、
を特徴とする請求項8に記載の太陽電池セル。 - 複数の前記突出部が、前記グリッド電極の延在方向において第2の配置間隔で分散配置され、
前記第2の配置間隔は、前記グリッド電極の幅よりも大きいこと、
を特徴とする請求項1に記載の太陽電池セル。 - 前記半導体基板の他面側に第2導電型の不純物元素が拡散された第2導電型不純物拡散層と、
前記第2導電型不純物拡散層に電気的に接続する受光面側電極と、
を有し、
前記不純物拡散層が、前記半導体基板の受光面側と対向する裏面に第1導電型の不純物元素が拡散された裏面電界層であり、
前記グリッド電極が裏面電極であること、
を特徴とする請求項1に記載の太陽電池セル。 - 第1導電型の半導体基板の一面側に、第1導電型または第2導電型の不純物元素を第1濃度で含んで線状形状を有し、前記半導体基板の面方向において特定方向に平行に延在する複数本の第1不純物拡散層と、前記第1不純物拡散層と同じ導電型の前記不純物元素を前記第1濃度よりも低い第2濃度で含む第2不純物拡散層とからなる不純物拡散層を形成する第1工程と、
前記特定方向に平行に延在して前記第1不純物拡散層に電気的に接続する線状形状の複数本のグリッド電極をスクリーン印刷による電極材料ペーストの印刷により前記第1不純物拡散層上に形成する第2工程と、
を含み、
前記グリッド電極は、前記グリッド電極の延在方向において、前記半導体基板の一面側の特定の基準位置から離れるに従って前記グリッド電極の側面からの突出長さが長くなる、前記グリッド電極の側面から前記グリッド電極の延在方向と交差する方向に突出するとともに前記グリッド電極の延在方向に沿って配列された複数の突出部を備えたパターンを有し、
前記第2工程では、電極材料ペーストを、前記グリッド電極のパターンに対応した開口パターンを同一間隔で並列に有する印刷マスクを前記半導体基板の一面側の特定の基準位置において前記半導体基板の一面側に対して位置合わせして、前記複数本の第1不純物拡散層上に形成すること、
を特徴とする太陽電池セルの製造方法。
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KR101135585B1 (ko) * | 2010-06-21 | 2012-04-17 | 엘지전자 주식회사 | 태양 전지 및 그 제조 방법 |
JP2012009578A (ja) * | 2010-06-24 | 2012-01-12 | Sharp Corp | 太陽電池 |
WO2012057316A1 (ja) * | 2010-10-29 | 2012-05-03 | 三洋電機株式会社 | 太陽電池モジュールの製造方法 |
JP2012134398A (ja) * | 2010-12-22 | 2012-07-12 | PVG Solutions株式会社 | 太陽電池セルおよびその製造方法 |
DE112011105671B4 (de) * | 2011-09-28 | 2023-08-03 | Panasonic Intellectual Property Management Co., Ltd. | Solarzelle und Verfahren zum Fertigen einer Solarzelle |
JP6048761B2 (ja) * | 2012-03-23 | 2016-12-21 | パナソニックIpマネジメント株式会社 | 太陽電池 |
JP2013201282A (ja) * | 2012-03-26 | 2013-10-03 | Sharp Corp | スクリーン、太陽電池の製造方法、および太陽電池 |
KR20140126819A (ko) | 2013-04-22 | 2014-11-03 | 엘지전자 주식회사 | 태양 전지 |
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2015
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- 2015-08-07 WO PCT/JP2015/072560 patent/WO2017026016A1/ja active Application Filing
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WO2017026016A1 (ja) | 2017-02-16 |
KR20180034600A (ko) | 2018-04-04 |
JPWO2017026016A1 (ja) | 2017-11-09 |
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