JP6068028B2 - 太陽電池及びその製造方法 - Google Patents
太陽電池及びその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 claims description 117
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
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- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical class [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
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- 239000010703 silicon Substances 0.000 description 7
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 5
- 229910010413 TiO 2 Inorganic materials 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
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- 238000007650 screen-printing Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
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- 229910052698 phosphorus Inorganic materials 0.000 description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
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- 239000003245 coal Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 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
- 239000003921 oil Substances 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- H01L31/0236—Special surface textures
- H01L31/02366—Special surface textures of the substrate or of a layer on the substrate, e.g. textured ITO/glass substrate or superstrate, textured polymer layer on glass substrate
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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
- H01L31/04—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
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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
- H01L31/02—Details
- H01L31/0216—Coatings
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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
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
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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
- H01L31/02—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
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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
- H01L31/0236—Special surface textures
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- H—ELECTRICITY
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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
- H01L31/02—Details
- H01L31/0236—Special surface textures
- H01L31/02363—Special surface textures of the semiconductor body itself, e.g. textured active layers
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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
- H01L31/04—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 at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier 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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- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/547—Monocrystalline silicon PV cells
Description
半導体基板10の前面12側には、第2の導電型不純物を有するエミッタ層20が形成され得る。本実施形態においてエミッタ層20は、断面ドーピングにより形成されるが、これについては、後述する。
半導体基板10の前面において、エミッタ層20の上に第1のパッシベーション膜21、反射防止膜22、及び第1の電極24が形成される。
半導体基板10の後面14にレーザーを照射して第1の部分340aが形成される部分で第2のパッシベーション膜32に貫通孔を形成する。その後、第2のパッシベーション膜32の上に第2の電極層340をメッキ、蒸着、スクリーン印刷などの方法により形成することができる。
10 半導体基板
20 エミッタ層
30 後面電界層
21 第1のパッシベーション膜
22 反射防止膜
32 第2のパッシベーション膜
24 第1の電極
34 第2の電極
Claims (11)
- 第1の導電型不純物を有する半導体基板の前面をドライエッチングによりテクスチャリングするステップと、
前記半導体基板の前面にイオン注入法を利用して第2の導電型不純物を注入してエミッタ層を形成するステップと、
前記半導体基板の後面に後面パッシベーション膜を形成するステップと、
前記エミッタ層に電気的に接続される第1の電極及び前記後面パッシベーション膜に形成された貫通孔を貫通することによって前記半導体基板の後面と部分的に接触する第2の電極を形成する電極形成ステップと、
を含み、
前記第2の電極を形成するステップは、
前記後面パッシベーション膜の上に第2の電極膜を形成するステップと、
前記第2の電極膜を前記半導体基板と電気的に接続するステップと、
前記第2の電極膜を焼成するステップと、を含み、
前記焼成するステップにおいて、前記後面パッシベーション膜及び前記第2の電極を構成する物質が前記半導体基板内に拡散されて前記半導体基板の後面の全体に後面電界層を形成することを特徴とする太陽電池の製造方法。 - 前記テクスチャリングするステップにおいて、前記ドライエッチングが反応性イオンエッチングによりなされることを特徴とする、請求項1に記載の太陽電池の製造方法。
- 前記半導体基板の前面が、前記テクスチャリングするステップにより1μm以下の表面粗さを有することを特徴とする、請求項1に記載の太陽電池の製造方法。
- 前記半導体基板の前面が、前記テクスチャリングするステップにより300〜600nmの表面粗さを有することを特徴とする、請求項3に記載の太陽電池の製造方法。
- 前記テクスチャリングするステップの前に、前記半導体基板の前面及び後面を鏡面研磨するステップをさらに含み、
前記テクスチャリングするステップの後に、前記半導体基板の前記後面より前記前面がさらに大きい表面粗さを有することを特徴とする、請求項3に記載の太陽電池の製造方法。 - 前記半導体基板の後面が、前記鏡面研磨により100nm以下の表面粗さを有することを特徴とする、請求項5に記載の太陽電池の製造方法。
- 前記第1の導電型不純物がp型であり、前記第2の導電型不純物がn型であり、
前記後面パッシベーション膜を形成するステップにおいて、前記後面パッシベーション膜はp型酸化膜を含むことを特徴とする、請求項1に記載の太陽電池の製造方法。 - 前記p型酸化膜は、希土類酸化物、アルミニウム酸化物、及びジルコニウム酸化物からなる群より選ばれた物質を少なくとも1つ含むことを特徴とする、請求項7に記載の太陽電池の製造方法。
- 前記エミッタ層を形成するステップの後に、前記半導体基板の前記前面に前面パッシベーション膜を形成するステップをさらに含み、
前記前面パッシベーション膜を形成するステップにおいて、前記前面パッシベーション膜は、シリコン酸化膜を含むことを特徴とする、請求項6に記載の太陽電池の製造方法。 - 前記エミッタ層を形成するステップの後且つ前記焼成するステップの前に、前記半導体基板の前記前面に前面パッシベーション膜を形成するステップ及び前記前面パッシベーション膜の上に第1の電極膜を形成するステップをさらに含み、
前記第2の電極膜を前記半導体基板と電気的に接続するステップは、レーザー焼成コンタクトにより実行され、
前記第1の電極膜及び前記第2の電極膜は、前記第2の電極膜を焼成するステップにおいて同時に焼成されることを特徴とする請求項1に記載の太陽電池の製造方法。 - 前記第2の電極は、前記貫通孔を通して前記後面電界層に点接触する第1の部分と、前記第1の部分に接続され、前記後面パッシベーション膜の上の全体に形成された第2の部分とを有し、
前記第2の電極は、前記半導体基板と点接触することを特徴とする、請求項10に記載の太陽電池の製造方法。
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EP (1) | EP2605290B1 (ja) |
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KR20200005537A (ko) * | 2017-03-03 | 2020-01-15 | 광둥 아이코 솔라 에너지 테크놀로지 컴퍼니., 리미티드. | P형 perc 양면 태양 전지 및 그 모듈, 시스템과 제조 방법 |
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Cited By (2)
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KR20200005537A (ko) * | 2017-03-03 | 2020-01-15 | 광둥 아이코 솔라 에너지 테크놀로지 컴퍼니., 리미티드. | P형 perc 양면 태양 전지 및 그 모듈, 시스템과 제조 방법 |
KR102323458B1 (ko) | 2017-03-03 | 2021-11-08 | 광둥 아이코 솔라 에너지 테크놀로지 컴퍼니., 리미티드. | P형 perc 양면 태양 전지 및 그 모듈, 시스템과 제조 방법 |
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US9634160B2 (en) | 2017-04-25 |
US20150129033A1 (en) | 2015-05-14 |
KR101860919B1 (ko) | 2018-06-29 |
JP6449210B2 (ja) | 2019-01-09 |
EP2605290B1 (en) | 2019-02-27 |
US20130153018A1 (en) | 2013-06-20 |
US8969125B2 (en) | 2015-03-03 |
JP2013128095A (ja) | 2013-06-27 |
JP2017017364A (ja) | 2017-01-19 |
EP2605290A1 (en) | 2013-06-19 |
KR20130068968A (ko) | 2013-06-26 |
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