JP6203271B2 - 酸素イオン注入を用いる太陽電池におけるスペーサー形成 - Google Patents
酸素イオン注入を用いる太陽電池におけるスペーサー形成 Download PDFInfo
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- 239000001301 oxygen Substances 0.000 title claims description 28
- 229910052760 oxygen Inorganic materials 0.000 title claims description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 26
- 125000006850 spacer group Chemical group 0.000 title description 56
- 238000005468 ion implantation Methods 0.000 title description 15
- 230000015572 biosynthetic process Effects 0.000 title description 11
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 162
- 229920005591 polysilicon Polymers 0.000 claims description 159
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 130
- 229910052710 silicon Inorganic materials 0.000 claims description 129
- 239000010703 silicon Substances 0.000 claims description 129
- 239000000758 substrate Substances 0.000 claims description 124
- 239000002019 doping agent Substances 0.000 claims description 93
- 229910052751 metal Inorganic materials 0.000 claims description 56
- 239000002184 metal Substances 0.000 claims description 56
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 6
- 229910052796 boron Inorganic materials 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 215
- 238000000034 method Methods 0.000 description 144
- 230000008569 process Effects 0.000 description 86
- 238000009792 diffusion process Methods 0.000 description 79
- 239000005388 borosilicate glass Substances 0.000 description 43
- 239000005360 phosphosilicate glass Substances 0.000 description 35
- 238000010438 heat treatment Methods 0.000 description 22
- 239000000463 material Substances 0.000 description 19
- 239000006117 anti-reflective coating Substances 0.000 description 16
- 238000005229 chemical vapour deposition Methods 0.000 description 14
- 229910052581 Si3N4 Inorganic materials 0.000 description 11
- 238000005530 etching Methods 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 11
- 239000002105 nanoparticle Substances 0.000 description 11
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 9
- 238000007650 screen-printing Methods 0.000 description 9
- 239000003989 dielectric material Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 8
- 238000007639 printing Methods 0.000 description 8
- 238000000608 laser ablation Methods 0.000 description 7
- 238000001465 metallisation Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000000976 ink Substances 0.000 description 6
- 238000007641 inkjet printing Methods 0.000 description 6
- 230000000873 masking effect Effects 0.000 description 6
- 238000000137 annealing Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 229910000676 Si alloy Inorganic materials 0.000 description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 oxygen ions Chemical class 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 238000001505 atmospheric-pressure chemical vapour deposition Methods 0.000 description 2
- 239000002800 charge carrier Substances 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 229910021332 silicide Inorganic materials 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000000266 aerosol jet deposition Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling 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
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910021341 titanium silicide Inorganic materials 0.000 description 1
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 1
- 229910021342 tungsten silicide Inorganic materials 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- 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
- H01L31/0248—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 characterised by their semiconductor bodies
- H01L31/0352—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 characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035272—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 characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions characterised by at least one potential jump barrier or surface barrier
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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
- 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
- H01L31/0682—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 back-junction, i.e. rearside emitter, solar cells, e.g. interdigitated base-emitter regions back-junction cells
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Description
[項目1]
通常動作中、太陽に向いている表面と、太陽から離れる方を向いている裏面とを有する太陽電池であって、
表面及び裏面を有するシリコン基板と、
上記シリコン基板の裏面に配設され、ドープポリシリコンの第一の領域を有する第一のポリシリコン層と、
上記シリコン基板の裏面に配設され、ドープポリシリコンの第二の領域を有する第二のポリシリコン層であって、上記第二の領域は、上記ドープポリシリコンの上記第一の領域を少なくとも部分的に覆って配設され、上記第二の領域は、上記第一の領域と反対の極性を有する、第二のポリシリコン層と、
上記第一のポリシリコン層の中に配設され、上記ドープポリシリコンの上記第二の領域の端から延在し、少なくとも[1×10 16 cm −2 ]の酸素濃度を有する抵抗領域と、
上記第二のポリシリコン層を覆って配設され、少なくとも上記ドープポリシリコンの上記第二の領域に電気的に接続される第一の金属グリッドと、
上記第一の金属グリッドと上記第二のポリシリコン層との間の第一の誘電体層と、
上記ドープポリシリコンの上記第一の領域に電気的に接続される第二の金属グリッドと
を備え、
上記第一の金属グリッドは、上記第一の誘電体層を通る少なくとも1つのコンタクトホールを通して上記ドープポリシリコンの上記第二の領域に電気的に接続され、
上記第一の金属グリッド及び上記第二の金属グリッドは、上記太陽電池の裏面に形成される、太陽電池。
[項目2]
上記シリコン基板は、N型シリコン基板を有し、上記ドープポリシリコンの上記第一の領域は、N型ポリシリコンを有し、上記ドープポリシリコンの上記第二の領域は、P型ポリシリコンを有する、項目1に記載の太陽電池。
[項目3]
上記ドープポリシリコンの上記第一の領域は、燐ドーパントを有し、上記ドープポリシリコンの上記第二の領域は、ホウ素ドーパントを有する、項目2に記載の太陽電池。
[項目4]
上記シリコン基板は、P型シリコン基板を有し、上記ドープポリシリコンの上記第一の領域は、P型ポリシリコンを有し、上記ドープポリシリコンの上記第二の領域は、N型ポリシリコンを有する、項目1に記載の太陽電池。
[項目5]
上記ドープポリシリコンの上記第一の領域は、ホウ素ドーパントを有し、上記ドープポリシリコンの上記第二の領域は、燐ドーパントを有する、項目4に記載の太陽電池。
[項目6]
上記第一の誘電体層は、上記第一の金属グリッドと上記第二の金属グリッドとの間に配置される、項目1に記載の太陽電池。
[項目7]
通常動作中、太陽に向いている表面と、太陽から離れる方を向いている裏面とを有する太陽電池であって、
表面及び裏面を有するシリコン基板と、
上記シリコン基板の裏面に形成された第一のドープポリシリコン領域と、
上記シリコン基板の裏面に形成された第二のドープポリシリコン領域であって、上記第一のドープポリシリコン領域と上記第二のドープポリシリコン領域とは、反対の極性である、第二のドープポリシリコン領域と、
上記シリコン基板の裏面に、かつ上記第一のドープポリシリコン及び上記第二のドープポリシリコン領域の各々の下に形成された第一の誘電体層と、
少なくとも[1×10 16 cm −2 ]の酸素濃度を有し、上記第一のドープポリシリコン領域と上記第二のドープポリシリコン領域との間の抵抗領域と、
上記第二のドープポリシリコン領域を覆って配設され、少なくとも上記第二のドープポリシリコン領域に電気的に接続される第一の金属グリッドと、
上記第一の金属グリッドと上記第二のドープポリシリコン領域との間の第二の誘電体層と、
上記第一のドープポリシリコン領域に電気的に接続される第二の金属グリッドと
を備え、
上記第一の金属グリッドは、上記第二の誘電体層を通る少なくとも1つのコンタクトホールを通して上記第二のドープポリシリコン領域に電気的に接続され、
上記第一の金属グリッド及び上記第二の金属グリッドは、上記太陽電池の裏面に形成される、太陽電池。
[項目8]
上記第一の誘電体層は、二酸化ケイ素を備え、50オングストローム未満の厚さを有する、項目7に記載の太陽電池。
[項目9]
上記抵抗領域は、上記シリコン基板の中に少なくとも部分的に延在する、項目7に記載の太陽電池。
[項目10]
上記抵抗領域は、上記第一の誘電体層の中に少なくとも部分的に延在する、項目9に記載の太陽電池。
[項目11]
上記第一の誘電体層は、上記第一のドープポリシリコン領域と上記第二のドープポリシリコン領域との間の上記シリコン基板の裏面に延在する、項目7に記載の太陽電池。
[項目12]
上記第一の誘電体層は、上記第一のドープポリシリコン領域と上記第二のドープポリシリコン領域との間に開口を有し、上記抵抗領域を露出させる、項目7に記載の太陽電池。
[項目13]
上記抵抗領域の露出部分は、ランダムにテクスチャー付与された表面を有する、項目12に記載の太陽電池。
[項目14]
上記第二の誘電体層は、上記抵抗領域の露出部分を覆って配設される、項目13に記載の太陽電池。
[項目15]
上記第二の誘電体層は、上記第一の金属グリッドと上記第二の金属グリッドとの間に配置される、項目7に記載の太陽電池。
[項目16]
通常動作中、太陽に向いている表面と、太陽から離れる方を向いている裏面とを有する太陽電池であって、
表面及び裏面を有するシリコン基板と、
上記シリコン基板の裏面に形成された第一のドープポリシリコン領域と、
上記シリコン基板の裏面に形成された第二のドープポリシリコン領域であって、上記第一のドープポリシリコン領域と上記第二のドープポリシリコン領域とは、反対の極性である、第二のドープポリシリコン領域と、
少なくとも[1×10 16 cm −2 ]の酸素濃度を有し、上記第一のドープポリシリコン領域と上記第二のドープポリシリコン領域との間に少なくとも部分的に延在している抵抗領域と、を備える、太陽電池。
[項目17]
上記第一のドープポリシリコン領域は、上記シリコン基板の裏面の表面を覆って形成される、項目16に記載の太陽電池。
[項目18]
上記シリコン基板と上記第一のドープポリシリコン領域との間に第一の中間層を更に備える、項目17に記載の太陽電池。
[項目19]
上記第一のドープポリシリコン領域及び第二のドープポリシリコン領域は、上記シリコン基板の中に形成される、項目16に記載の太陽電池。
[項目20]
上記シリコン基板の裏面は、ランダムにテクスチャー付与された表面を有する、項目16に記載の太陽電池。
Claims (6)
- 通常動作中、太陽に向いている表面と、太陽から離れる方を向いている裏面とを有する太陽電池であって、
表面及び裏面を有するシリコン基板と、
前記シリコン基板の裏面に形成された第一のドープポリシリコン領域と、
前記シリコン基板の裏面に形成された第二のドープポリシリコン領域であって、前記第一のドープポリシリコン領域と前記第二のドープポリシリコン領域とは、反対の極性である、第二のドープポリシリコン領域と、
前記シリコン基板の裏面に、かつ前記第一のドープポリシリコン及び前記第二のドープポリシリコン領域の各々の下に形成された第一の誘電体層と、
前記第一のドープポリシリコン領域と前記第二のドープポリシリコン領域との間の抵抗領域であって、酸素を有し、前記第一の誘電体層の中に少なくとも部分的に延在する抵抗領域と、
前記第二のドープポリシリコン領域を覆って配設され、少なくとも前記第二のドープポリシリコン領域に電気的に接続される第一の金属グリッドと、
前記第一の金属グリッドと前記第二のドープポリシリコン領域との間の第二の誘電体層と、
前記第一のドープポリシリコン領域に電気的に接続される第二の金属グリッドと
を備え、
前記第一の金属グリッドは、前記第二の誘電体層を通る少なくとも1つのコンタクトホールを通して前記第二のドープポリシリコン領域に電気的に接続され、
前記第一の金属グリッド及び前記第二の金属グリッドは、前記太陽電池の裏面に形成される、太陽電池。 - 前記第一の誘電体層は、二酸化ケイ素を備え、50オングストローム未満の厚さを有する、請求項1に記載の太陽電池。
- 前記シリコン基板は、N型シリコン基板を有し、前記第一のドープポリシリコン領域は、N型ポリシリコンを有し、前記第二のドープポリシリコン領域は、P型ポリシリコンを有する、請求項1又は2に記載の太陽電池。
- 前記第一のドープポリシリコン領域は、燐ドーパントを有し、前記第二のドープポリシリコン領域は、ホウ素ドーパントを有する、請求項3に記載の太陽電池。
- 前記シリコン基板は、P型シリコン基板を有し、前記第一のドープポリシリコン領域は、P型ポリシリコンを有し、前記第二のドープポリシリコン領域は、N型ポリシリコンを有する、請求項1又は2に記載の太陽電池。
- 前記第一のドープポリシリコン領域は、ホウ素ドーパントを有し、前記第二のドープポリシリコン領域は、燐ドーパントを有する、請求項5に記載の太陽電池。
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