JP7442002B1 - 太陽電池およびその製造方法、光起電力モジュール - Google Patents
太陽電池およびその製造方法、光起電力モジュール Download PDFInfo
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- JP7442002B1 JP7442002B1 JP2023100447A JP2023100447A JP7442002B1 JP 7442002 B1 JP7442002 B1 JP 7442002B1 JP 2023100447 A JP2023100447 A JP 2023100447A JP 2023100447 A JP2023100447 A JP 2023100447A JP 7442002 B1 JP7442002 B1 JP 7442002B1
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- conductive layer
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- 239000000758 substrate Substances 0.000 claims abstract description 152
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 89
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 81
- 229910052710 silicon Inorganic materials 0.000 claims description 79
- 239000010703 silicon Substances 0.000 claims description 79
- 239000013078 crystal Substances 0.000 claims description 52
- 239000000463 material Substances 0.000 claims description 38
- 230000000903 blocking effect Effects 0.000 claims description 35
- 230000004888 barrier function Effects 0.000 claims description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 18
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 18
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 15
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 15
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- 238000007789 sealing Methods 0.000 claims description 9
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- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 4
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- 238000010521 absorption reaction Methods 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 239000012535 impurity Substances 0.000 description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 8
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- 229910052787 antimony Inorganic materials 0.000 description 6
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 6
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 5
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 5
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- 238000006722 reduction reaction Methods 0.000 description 4
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
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- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
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- KTSFMFGEAAANTF-UHFFFAOYSA-N [Cu].[Se].[Se].[In] Chemical compound [Cu].[Se].[Se].[In] KTSFMFGEAAANTF-UHFFFAOYSA-N 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
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- H01L31/1812—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic Table including only AIVBIV alloys, e.g. SiGe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
Description
前記トンネル層の表面に第1真性シリコン層を形成することと、前記第1真性シリコン層の表面に前記遮断層を形成することと、前記遮断層の表面に第2真性シリコン層を形成することと、前記第2真性シリコン層の前記基板から離れた表面に第1ドーピング元素を含んだドーピングソースを堆積させ、前記ドーピングソースを堆積させると同時に、酸素ガスを流し込むことにより、一部の厚さの前記第2真性シリコン層をガラス層に変換し、前記ガラス層が前記第1ドーピング元素を含んだ酸化シリコンであることと、第1ドーピング工程を行い、前記ガラス層に蓄積された第1ドーピング元素を前記第1真性シリコン層に拡散して前記第1ドーピング導電層を形成し、前記第1ドーピング元素を前記ガラス層を除いた前記第2真性シリコン層に拡散して初期第2ドーピング導電層を形成することと、一部の前記ガラス層に対して第2ドーピング工程を行い、第2ドーピング工程を経た前記ガラス層における第1ドーピング元素は前記第1表面に垂直な方向に沿って前記初期第2ドーピング導電層に拡散して、この一部の前記初期第2ドーピング導電層を前記第2ドーピング導電層の第2部分に変換し、残りの一部の前記初期第2ドーピング導電層が第1部分を形成することと、を含む。
Claims (17)
- 第1表面を備える基板と、
前記第1表面に形成されるトンネル層と、
前記トンネル層の前記基板から離れた表面に形成される第1ドーピング導電層と、
前記第1ドーピング導電層の前記基板から離れた側に形成される第2ドーピング導電層であって、前記第2ドーピング導電層は、複数の第1部分と、複数の第2部分と、を含み、各前記第1部分と各前記第2部分が予め設定された方向及び前記第2ドーピング導電層の厚さ方向に垂直な方向に沿って交互に配列され、各前記第1部分と各前記第2部分がいずれも前記予め設定された方向に沿って延び、ここで、前記第1ドーピング導電層のドーピング元素濃度が前記第1部分のドーピング元素濃度より小さく、且つ、前記第1部分のドーピング元素濃度が前記第2部分のドーピング元素濃度より小さい第2ドーピング導電層と、
複数の第1電極であって、前記複数の第1電極のうちの各第1電極がいずれも前記予め設定された方向に沿って延び、各前記第1電極と各前記第2部分とが1対1で対応しており、1つの前記第1電極が対応する前記第2部分と電気的と接触している第1電極と、を含み、
前記予め設定された方向は、前記第1表面に平行でありかつ前記第1部分と前記第2部分が交互に配列された方向と垂直な方向であり、
前記基板のドーピング元素種類はN型ドーピング元素であり、前記第2部分は、N型ドーピング元素がドーピングされた本体部と、前記本体部内に位置し、P型ドーピング元素がドーピングされた反転ドーピング部と、を含み、前記反転ドーピング部が前記本体部内に占める体積比は1/2より小さい、
ことを特徴とする太陽電池。 - 前記第1部分のドーピング元素濃度と前記第2部分のドーピング元素濃度の比は1:50~3:4である、
ことを特徴とする請求項1に記載の太陽電池。 - 前記第1ドーピング導電層のドーピング元素濃度と前記第2部分のドーピング元素濃度の比は1:100~1:2である、
ことを特徴とする請求項2に記載の太陽電池。 - 前記第1ドーピング導電層は、複数の第3部分と、複数の第4部分と、を含み、各前記第3部分と各前記第4部分が前記予め設定された方向及び前記第2ドーピング導電層の厚さ方向に垂直な方向に沿って交互に配列され、各前記第3部分と各前記第4部分がいずれも前記予め設定された方向に沿って延び、1つの前記第3部分が1つの前記第1部分に正対し、1つの前記第4部分が1つの前記第2部分に正対し、前記第3部分のドーピング元素濃度が前記第4部分のドーピング元素濃度より小さい、
ことを特徴とする請求項1に記載の太陽電池。 - 前記第1ドーピング導電層のドーピング元素種類がN型である場合、前記第3部分のドーピング元素濃度と前記第4部分のドーピング元素濃度の比は1:30~5:6であり、前記第1ドーピング導電層のドーピング元素種類がP型である場合、前記第3部分のドーピング元素濃度と前記第4部分のドーピング元素濃度の比は1:100~2:3である、
ことを特徴とする請求項4に記載の太陽電池。 - 前記第4部分のドーピング元素濃度と前記第2部分のドーピング元素濃度の比は1:10~5:6である、
ことを特徴とする請求項5に記載の太陽電池。 - 遮断層をさらに含み、前記遮断層が前記第1ドーピング導電層と前記第2ドーピング導電層の間に位置し、前記遮断層の前記基板に向かう表面が前記第1ドーピング導電層の前記基板から離れた表面と接触しており、前記遮断層の前記基板から離れた表面が前記第2ドーピング導電層の前記基板に向かう表面と接触している、
ことを特徴とする請求項1~6のいずれか1項に記載の太陽電池。 - 前記遮断層の前記基板から離れた表面は各前記第2部分と接触しており、前記遮断層の前記第1表面における正射影は前記第2部分の前記第1表面における正射影と重なっている、
ことを特徴とする請求項7に記載の太陽電池。 - 前記遮断層の前記基板から離れた表面は各前記第1部分および各前記第2部分と接触しており、且つ前記遮断層の前記第1表面における正射影は各前記第1部分の前記第1表面における正射影および各前記第2部分の前記第1表面における正射影と重なっている、
ことを特徴とする請求項7に記載の太陽電池。 - 前記遮断層の材料は、酸化シリコン、窒化シリコン、酸窒化シリコン、炭化ケイ素またはフッ化マグネシウムのうちの少なくとも1つを含む、
ことを特徴とする請求項7に記載の太陽電池。 - 第1ドーピング導電層の材料は、アモルファスシリコン、多結晶シリコンまたは炭化ケイ素のうちの少なくとも1つを含み、前記第2ドーピング導電層の材料は、アモルファスシリコン、多結晶シリコンまたは炭化ケイ素のうちの少なくとも1つを含む、
ことを特徴とする請求項10に記載の太陽電池。 - 前記第1ドーピング導電層は第1多結晶シリコンから構成され、前記第1部分は第2多結晶シリコンから構成され、前記第2部分は第3多結晶シリコンから構成され、前記第1多結晶シリコンの平均結晶粒径は、前記第2多結晶シリコンの平均結晶粒径より大きく、且つ前記第3多結晶シリコンの平均結晶粒径より大きい、
ことを特徴とする請求項11に記載の太陽電池。 - 前記第3部分は第4多結晶シリコンから構成され、前記第4部分は第5多結晶シリコンから構成され、前記第1部分は第2多結晶シリコンから構成され、前記第2部分は第3多結晶シリコンから構成され、ここで、前記第4多結晶シリコンの平均結晶粒径は前記第5多結晶シリコンの平均結晶粒径より大きく、前記第5多結晶シリコンの平均結晶粒径は前記第3多結晶シリコンの平均結晶粒径より大きく、前記第2多結晶シリコンの平均結晶粒径は前記第3多結晶シリコンの平均結晶粒径より大きい、
ことを特徴とする請求項4に記載の太陽電池。 - 前記第1ドーピング導電層の厚さと前記第2ドーピング導電層の厚さの比は2:1~1:12である、
ことを特徴とする請求項1~6のいずれか1項に記載の太陽電池。 - 複数の請求項1に記載された太陽電池を接続することで形成された少なくとも1つの電池ストリングと、
前記少なくとも1つの電池ストリングを覆うための少なくとも1つの封止層と、
前記少なくとも1つの封止層を覆うための少なくとも1つ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。 - 第1表面を備える基板を提供することと、
前記第1表面にトンネル層を形成することと、
前記トンネル層の前記基板から離れた表面に第1ドーピング導電層を形成することと、
前記第1ドーピング導電層の前記基板から離れた側に第2ドーピング導電層を形成することであって、前記第2ドーピング導電層は、複数の第1部分と、複数の第2部分とを含み、各前記第1部分と各前記第2部分が予め設定された方向及び前記第2ドーピング導電層の厚さ方向に垂直な方向に沿って交互に配列され、各前記第1部分と各前記第2部分がいずれも前記予め設定された方向に沿って延び、ここで、前記第1ドーピング導電層のドーピング元素濃度が前記第1部分のドーピング元素濃度より小さく、且つ前記第1部分のドーピング元素濃度が前記第2部分のドーピング元素濃度より小さいことと、
複数の第1電極を形成することであって、前記複数の第1電極のうちの各第1電極はいずれも前記予め設定された方向に沿って延びており、各前記第1電極は各前記第2部分に1対1で対応し、1つの前記第1電極は対応する前記第2部分に電気的と接触していることと、を含み、
前記予め設定された方向は、前記第1表面に平行でありかつ前記第1部分と前記第2部分が交互に配列された方向と垂直な方向であり、
前記基板のドーピング元素種類はN型ドーピング元素であり、前記第2部分は、N型ドーピング元素がドーピングされた本体部と、前記本体部内に位置し、P型ドーピング元素がドーピングされた反転ドーピング部と、を含み、前記反転ドーピング部が前記本体部内に占める体積比は1/2より小さい、
ことを特徴とする太陽電池の製造方法。 - 前記第2ドーピング導電層を形成するステップの前に、さらに、前記第1ドーピング導電層の前記基板から離れた表面に位置する遮断層を形成し、前記遮断層の材料が酸化シリコン、窒化シリコン、酸窒化シリコンまたは炭化ケイ素のうちの少なくとも1つを含むことを含む、
ことを特徴とする請求項16に記載の太陽電池の製造方法。
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CN218548445U (zh) | 2022-06-29 | 2023-02-28 | 泰州中来光电科技有限公司 | 一种晶体硅太阳电池用膜层结构及晶体硅太阳电池、光伏组件和光伏系统 |
CN115692533A (zh) | 2022-11-15 | 2023-02-03 | 江苏杰太光电技术有限公司 | 一种TOPCon电池及其制备方法 |
CN115985980A (zh) | 2023-02-17 | 2023-04-18 | 浙江晶科能源有限公司 | 一种太阳能电池及光伏组件 |
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