JP2016508286A - 太陽電池導電性コンタクトのシード層 - Google Patents
太陽電池導電性コンタクトのシード層 Download PDFInfo
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- 229910052710 silicon Inorganic materials 0.000 claims abstract description 110
- 239000000758 substrate Substances 0.000 claims abstract description 106
- 239000010703 silicon Substances 0.000 claims abstract description 82
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000000203 mixture Substances 0.000 claims abstract description 43
- 239000002245 particle Substances 0.000 claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000009792 diffusion process Methods 0.000 claims abstract description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 38
- 239000011856 silicon-based particle Substances 0.000 claims description 38
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 36
- 238000000137 annealing Methods 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 6
- 229910001887 tin oxide Inorganic materials 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 20
- 229920005591 polysilicon Polymers 0.000 description 23
- 238000010304 firing Methods 0.000 description 10
- 238000005424 photoluminescence Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
- 238000010587 phase diagram Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910018125 Al-Si Inorganic materials 0.000 description 2
- 229910018520 Al—Si Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 2
- 239000006117 anti-reflective coating Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 229910018098 Ni-Si Inorganic materials 0.000 description 1
- 229910005883 NiSi Inorganic materials 0.000 description 1
- 229910018529 Ni—Si Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
Description
[項目1]
太陽電池であって、
基板と、
前記基板の上方に配置されるエミッタ領域と、
前記エミッタ領域上に配置され、前記エミッタ領域と接触する導電層を含む、導電性コンタクトであって、前記導電層は、およそ15%超のSiと残りの部分のAlから本質的に成る組成を有する、複数のアルミニウム/シリコン(Al/Si)粒子を含む、導電性コンタクトと、
を備える、太陽電池。
[項目2]
前記複数のAl/Si粒子は、およそ25%未満のSiと残りの部分のAlから本質的に成る組成を有する、項目1に記載の太陽電池。
[項目3]
前記複数のAl/Si粒子は微結晶性である、項目1に記載の太陽電池。
[項目4]
前記導電層は、およそ10〜30%の結合剤及びフリットと、残りの部分の前記複数のAl/Si粒子から本質的に成る組成を有する、項目1に記載の太陽電池。
[項目5]
前記結合剤は、酸化亜鉛(ZnO)、酸化スズ(SnO)、又は両方を含み、前記フリットは複数のガラス粒子を含む、項目4に記載の太陽電池。
[項目6]
前記導電層は、およそ100マイクロメートル超の厚さを有し、前記導電性コンタクトは、前記導電層から本質的に成る前記太陽電池のバックコンタクトである、項目1に記載の太陽電池。
[項目7]
前記導電層はおよそ2〜10マイクロメートルの厚さを有し、前記導電性コンタクトは、前記導電層、前記導電層上に配置された無電解めっきニッケル(Ni)層、及び前記Ni層上に配置された電気めっき銅(Cu)層を含む、前記太陽電池のバックコンタクトである、項目1に記載の太陽電池。
[項目8]
前記複数のAl/Si粒子の前記結晶性は、およそ550〜580℃の範囲の温度で行われるアニールにより生じる、項目3に記載の太陽電池。
[項目9]
前記エミッタ領域は、前記基板上に配置されたトンネリング誘電層上に配置された多結晶シリコン領域を含み、前記導電層は、前記エミッタ領域の上方に配置された絶縁層のトレンチ内に配置され、かつ前記多結晶シリコン領域と接触しており、前記導電層が前記多結晶シリコン領域と接触する前記多結晶シリコン領域にはピットの形成が殆ど、又は全く認められない、項目1に記載の太陽電池。
[項目10]
太陽電池であって、
基板であって、前記基板の表面に又は前記表面の付近に拡散領域を有する基板と、
前記拡散領域の上方に配置され、前記基板と接触する導電層を含む、導電性コンタクトであって、前記導電層はおよそ15%超のSiと、残りの部分のAlから本質的に成る組成を有する複数のアルミニウム/シリコン(Al/Si)粒子を含む、導電性コンタクトと、
を備える、太陽電池。
[項目11]
前記複数のAl/Si粒子は、およそ25%未満のSiと残りの部分のAlから本質的に成る組成を有する、項目10に記載の太陽電池。
[項目12]
前記複数のAl/Si粒子は微結晶性である、項目10に記載の太陽電池。
[項目13]
前記導電層は、およそ10〜30%の結合剤及びフリットと、残りの部分の前記複数のAl/Si粒子から本質的に成る組成を有する、項目10に記載の太陽電池。
[項目14]
前記結合剤は、酸化亜鉛(ZnO)、酸化スズ(SnO)、又は両方を含み、前記フリットは複数のガラス粒子を含む、項目13に記載の太陽電池。
[項目15]
前記導電層は、およそ100マイクロメートル超の厚さを有し、前記導電性コンタクトは、前記導電層から本質的に成る前記太陽電池のバックコンタクトである、項目10に記載の太陽電池。
[項目16]
前記導電層はおよそ2〜10マイクロメートルの厚さを有し、前記導電性コンタクトは、前記導電層、前記導電層上に配置された無電解めっきニッケル(Ni)層、及び前記Ni層上に配置された電気めっき銅(Cu)層を含む、前記太陽電池のバックコンタクトである、項目10に記載の太陽電池。
[項目17]
前記複数のAl/Si粒子の前記結晶性は、およそ550〜580℃の範囲の温度で行われるアニールから生じる、項目12に記載の太陽電池。
[項目18]
前記基板はバルク結晶シリコン基板であり、前記導電層は前記基板の前記表面の上方に配置された絶縁層のトレンチ内に配置され、前記導電層が前記バルク結晶シリコン基板と接触する前記バルク結晶シリコン基板にはピットの形成が殆ど、又は全く認められない、項目10に記載の太陽電池。
[項目19]
部分的に製造された太陽電池であって、
基板と、
前記基板内、又は前記基板の上方に配置されたエミッタ領域と、
前記エミッタ領域のシリコン領域上に配置され、前記シリコン領域と接触する導電層を含む導電性コンタクトであって、前記導電層は、前記導電層が前記導電層のアニール中に前記シリコン領域の有意な部分を消耗することがないように、十分な量のSiと、残りの部分のAlから成る組成を有する、複数のアルミニウム/シリコン(Al/Si)粒子を含む、導電性コンタクトと、
を含む、部分的に作製された太陽電池。
[項目20]
前記複数のAl/Si粒子は、およそ15%超、およそ25%未満のSiと、残りの部分のAlから本質的に成る組成を有する、項目19に記載の太陽電池。
Claims (20)
- 太陽電池であって、
基板と、
前記基板の上方に配置されるエミッタ領域と、
前記エミッタ領域上に配置され、前記エミッタ領域と接触する導電層を含む、導電性コンタクトであって、前記導電層は、およそ15%超のSiと残りの部分のAlから本質的に成る組成を有する、複数のアルミニウム/シリコン(Al/Si)粒子を含む、導電性コンタクトと、
を備える、太陽電池。 - 前記複数のAl/Si粒子は、およそ25%未満のSiと残りの部分のAlから本質的に成る組成を有する、請求項1に記載の太陽電池。
- 前記複数のAl/Si粒子は微結晶性である、請求項1に記載の太陽電池。
- 前記導電層は、およそ10〜30%の結合剤及びフリットと、残りの部分の前記複数のAl/Si粒子から本質的に成る組成を有する、請求項1に記載の太陽電池。
- 前記結合剤は、酸化亜鉛(ZnO)、酸化スズ(SnO)、又は両方を含み、前記フリットは複数のガラス粒子を含む、請求項4に記載の太陽電池。
- 前記導電層は、およそ100マイクロメートル超の厚さを有し、前記導電性コンタクトは、前記導電層から本質的に成る前記太陽電池のバックコンタクトである、請求項1に記載の太陽電池。
- 前記導電層はおよそ2〜10マイクロメートルの厚さを有し、前記導電性コンタクトは、前記導電層、前記導電層上に配置された無電解めっきニッケル(Ni)層、及び前記Ni層上に配置された電気めっき銅(Cu)層を含む、前記太陽電池のバックコンタクトである、請求項1に記載の太陽電池。
- 前記複数のAl/Si粒子の前記結晶性は、およそ550〜580℃の範囲の温度で行われるアニールにより生じる、請求項3に記載の太陽電池。
- 前記エミッタ領域は、前記基板上に配置されたトンネリング誘電層上に配置された多結晶シリコン領域を含み、前記導電層は、前記エミッタ領域の上方に配置された絶縁層のトレンチ内に配置され、かつ前記多結晶シリコン領域と接触しており、前記導電層が前記多結晶シリコン領域と接触する前記多結晶シリコン領域にはピットの形成が殆ど、又は全く認められない、請求項1に記載の太陽電池。
- 太陽電池であって、
基板であって、前記基板の表面に又は前記表面の付近に拡散領域を有する基板と、
前記拡散領域の上方に配置され、前記基板と接触する導電層を含む、導電性コンタクトであって、前記導電層はおよそ15%超のSiと、残りの部分のAlから本質的に成る組成を有する複数のアルミニウム/シリコン(Al/Si)粒子を含む、導電性コンタクトと、
を備える、太陽電池。 - 前記複数のAl/Si粒子は、およそ25%未満のSiと残りの部分のAlから本質的に成る組成を有する、請求項10に記載の太陽電池。
- 前記複数のAl/Si粒子は微結晶性である、請求項10に記載の太陽電池。
- 前記導電層は、およそ10〜30%の結合剤及びフリットと、残りの部分の前記複数のAl/Si粒子から本質的に成る組成を有する、請求項10に記載の太陽電池。
- 前記結合剤は、酸化亜鉛(ZnO)、酸化スズ(SnO)、又は両方を含み、前記フリットは複数のガラス粒子を含む、請求項13に記載の太陽電池。
- 前記導電層は、およそ100マイクロメートル超の厚さを有し、前記導電性コンタクトは、前記導電層から本質的に成る前記太陽電池のバックコンタクトである、請求項10に記載の太陽電池。
- 前記導電層はおよそ2〜10マイクロメートルの厚さを有し、前記導電性コンタクトは、前記導電層、前記導電層上に配置された無電解めっきニッケル(Ni)層、及び前記Ni層上に配置された電気めっき銅(Cu)層を含む、前記太陽電池のバックコンタクトである、請求項10に記載の太陽電池。
- 前記複数のAl/Si粒子の前記結晶性は、およそ550〜580℃の範囲の温度で行われるアニールから生じる、請求項12に記載の太陽電池。
- 前記基板はバルク結晶シリコン基板であり、前記導電層は前記基板の前記表面の上方に配置された絶縁層のトレンチ内に配置され、前記導電層が前記バルク結晶シリコン基板と接触する前記バルク結晶シリコン基板にはピットの形成が殆ど、又は全く認められない、請求項10に記載の太陽電池。
- 部分的に製造された太陽電池であって、
基板と、
前記基板内、又は前記基板の上方に配置されたエミッタ領域と、
前記エミッタ領域のシリコン領域上に配置され、前記シリコン領域と接触する導電層を含む導電性コンタクトであって、前記導電層は、前記導電層が前記導電層のアニール中に前記シリコン領域の有意な部分を消耗することがないように、十分な量のSiと、残りの部分のAlから成る組成を有する、複数のアルミニウム/シリコン(Al/Si)粒子を含む、導電性コンタクトと、
を含む、部分的に作製された太陽電池。 - 前記複数のAl/Si粒子は、およそ15%超、およそ25%未満のSiと、残りの部分のAlから本質的に成る組成を有する、請求項19に記載の太陽電池。
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US13/706,728 US20140158192A1 (en) | 2012-12-06 | 2012-12-06 | Seed layer for solar cell conductive contact |
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MX2015007055A (es) | 2015-09-28 |
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AU2013355406B2 (en) | 2017-06-29 |
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