WO2013149757A1 - Mehrschicht-rückelektrode für eine photovoltaische dünnschichtsolarzelle, verwendung derselben für die herstellung von dünnschichtsolarzellen und -modulen, photovoltaische dünnschichtsolarzellen und -module enthaltend die mehrschicht-rückelektrode sowie ein herstellungsverfahren - Google Patents
Mehrschicht-rückelektrode für eine photovoltaische dünnschichtsolarzelle, verwendung derselben für die herstellung von dünnschichtsolarzellen und -modulen, photovoltaische dünnschichtsolarzellen und -module enthaltend die mehrschicht-rückelektrode sowie ein herstellungsverfahren Download PDFInfo
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- WO2013149757A1 WO2013149757A1 PCT/EP2013/053224 EP2013053224W WO2013149757A1 WO 2013149757 A1 WO2013149757 A1 WO 2013149757A1 EP 2013053224 W EP2013053224 W EP 2013053224W WO 2013149757 A1 WO2013149757 A1 WO 2013149757A1
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- layer
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- back electrode
- film solar
- molybdenum
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- 239000010409 thin film Substances 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 59
- 230000004888 barrier function Effects 0.000 claims abstract description 58
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 50
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 31
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 24
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 23
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 20
- 150000004770 chalcogenides Chemical class 0.000 claims abstract description 19
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
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- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
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- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
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- 239000004065 semiconductor Substances 0.000 claims description 59
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 39
- 239000011733 molybdenum Substances 0.000 claims description 39
- 239000002019 doping agent Substances 0.000 claims description 35
- 239000010955 niobium Substances 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 18
- 239000010937 tungsten Substances 0.000 claims description 17
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 14
- 239000011669 selenium Substances 0.000 claims description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052951 chalcopyrite Inorganic materials 0.000 claims description 11
- 239000011734 sodium Substances 0.000 claims description 11
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- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 8
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- -1 Co Inorganic materials 0.000 claims description 7
- 229910016001 MoSe Inorganic materials 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
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- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 6
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- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
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- 150000001787 chalcogens Chemical class 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
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- QMXBEONRRWKBHZ-UHFFFAOYSA-N [Na][Mo] Chemical compound [Na][Mo] QMXBEONRRWKBHZ-UHFFFAOYSA-N 0.000 claims description 2
- CZIMGECIMULZMS-UHFFFAOYSA-N [W].[Na] Chemical compound [W].[Na] CZIMGECIMULZMS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
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- 238000010894 electron beam technology Methods 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims description 2
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 claims description 2
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- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 229940065287 selenium compound Drugs 0.000 claims description 2
- 150000003343 selenium compounds Chemical class 0.000 claims description 2
- 125000003748 selenium group Chemical group *[Se]* 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 150000003464 sulfur compounds Chemical class 0.000 claims description 2
- 238000007736 thin film deposition technique Methods 0.000 claims description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 184
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000007772 electrode material Substances 0.000 description 6
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
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- 230000001976 improved effect Effects 0.000 description 4
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- 229910052979 sodium sulfide Inorganic materials 0.000 description 4
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 4
- 235000010265 sodium sulphite Nutrition 0.000 description 4
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 3
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- 230000001771 impaired effect Effects 0.000 description 2
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- SDDGNMXIOGQCCH-UHFFFAOYSA-N 3-fluoro-n,n-dimethylaniline Chemical compound CN(C)C1=CC=CC(F)=C1 SDDGNMXIOGQCCH-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
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- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- BKQMNPVDJIHLPD-UHFFFAOYSA-N OS(=O)(=O)[Se]S(O)(=O)=O Chemical compound OS(=O)(=O)[Se]S(O)(=O)=O BKQMNPVDJIHLPD-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
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- 238000009825 accumulation Methods 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000011109 contamination Methods 0.000 description 1
- 230000000779 depleting effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
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- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- SPVXKVOXSXTJOY-UHFFFAOYSA-N selane Chemical compound [SeH2] SPVXKVOXSXTJOY-UHFFFAOYSA-N 0.000 description 1
- 229910000058 selane Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
-
- 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
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
-
- 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
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
-
- 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
- H01L31/0248—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
- H01L31/0256—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 the material
- H01L31/0264—Inorganic materials
- H01L31/032—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
- H01L31/0322—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising only AIBIIICVI chalcopyrite compounds, e.g. Cu In Se2, Cu Ga Se2, Cu In Ga Se2
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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
- H01L31/0248—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
- H01L31/0256—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 the material
- H01L31/0264—Inorganic materials
- H01L31/032—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
- H01L31/0326—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising AIBIICIVDVI kesterite compounds, e.g. Cu2ZnSnSe4, Cu2ZnSnS4
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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 potential barriers
- H01L31/072—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 heterojunction type
- H01L31/0749—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 heterojunction type including a AIBIIICVI compound, e.g. CdS/CulnSe2 [CIS] heterojunction 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
- H01L31/0248—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
- H01L31/0256—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 the material
- H01L31/0264—Inorganic materials
- H01L31/032—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
- H01L31/0324—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising only AIVBVI or AIIBIVCVI chalcogenide compounds, e.g. Pb Sn Te
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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
- Y02E10/52—PV systems with concentrators
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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
- Y02E10/541—CuInSe2 material PV cells
-
- 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
Definitions
- the present invention relates to a multilayer back electrode for a photovoltaic thin-film solar cell, the use of this multilayer back electrode for the
- Suitable photovoltaic solar modules include on the one hand crystalline and amorphous
- Chalcopyrite semiconductor absorber layer used.
- These thin-film solar modules usually have a molybdenum back electrode layer on a glass substrate. This is in a process variant with a copper and indium and optionally
- CIS or CIGS system Provided with gallium comprehensive precursor metal thin layer and then reacted in the presence of hydrogen sulfide and / or hydrogen selenide at elevated temperatures to a so-called CIS or CIGS system.
- the back electrode layer has a high transverse conductivity to ensure low-loss series connection. Also, should from the
- Substrate and / or the semiconductor absorber layer migrating substances no effect on the quality and functional range of the back electrode layer have.
- the material of the back electrode layer must have a good adaptation to the thermal expansion behavior of the substrate and the overlying layers in order to avoid microcracks.
- the adhesion on the substrate surface should meet all common usage requirements.
- a solar cell with a morphologically well-formed absorber layer and good efficiencies should be obtained by treating the chalcopyrite semiconductor absorber layer with an element from the group of sodium, potassium and lithium in a dose of 10 14 to 10 16 atoms doped / cm 2 while providing a diffusion barrier between the substrate and the semiconductor absorber layer.
- an alkali-free substrate if it is desired to dispense with a diffusion barrier layer.
- Blösch et al. propose for the use of flexible thin-film solar cells also the use of a stainless steel substrate film on which a thin titanium layer is first applied for the purpose of improving the adhesion. Satisfactory results were obtained with such CIGS thin film solar cells equipped with a titanium / molybdenum / molybdenum triple layer. Improved thin-film solar cells are also sought after with the technical teaching of WO 2011/123869 A2.
- the solar cell disclosed therein comprises a sodium glass substrate, a molybdenum back electrode layer, a CIGS layer, a buffer layer, a layer of intrinsic zinc oxide, and a layer of aluminum-doped zinc oxide.
- a first separation trench extends over the molybdenum layer, the CIGS layer and the powder layer, a second separation trench begins above the molybdenum layer.
- An insulating material is deposited in the first separation trench, and a front electrode layer is obliquely deposited on the solar cell including the first separation trench.
- US 2004/014419 A1 seeks to provide a thin-film solar cell whose molybdenum back electrode layer has improved efficiency. This is to be achieved by providing a glass substrate with a back electrode layer of molybdenum whose thickness is not to exceed 500 nm.
- the present invention has the object to provide back electrode systems for thin-film solar cells or modules available, which are no longer subject to the disadvantages of the prior art and in particular in a cost effective and reliable manner reproducibly lead to thin film solar modules with high efficiencies.
- a multilayer back electrode for a thin film photovoltaic solar cell or module comprising, in that order,
- At least one bulk back electrode layer comprising or consisting essentially of V, Mn, Cr, Mo, Co, Zr, Ta, Nb and / or W and / or containing and consisting essentially of alloys containing V, Mn, Cr, Mo, Co , Zr, Fe, Ni, Al, Ta, Nb and / or W; at least one conductive barrier layer; at least one, in particular ohmic, contact layer,
- the barrier layer containing at least one first layer, adjacent to the barrier layer, containing or consisting essentially of Mo, W, Ta, Nb, Zr and / or Co, in particular Mo and / or W, and at least one second layer, not adjacent to the barrier layer, i. in any case, by the first layer separated from the barrier layer, containing or essentially of at least one metal chalcogenide.
- the bulk back electrode and the contact layer comprise molybdenum or tungsten or a molybdenum or tungsten alloy, in particular molybdenum or a molybdenum alloy, or essentially of molybdenum or tungsten or of a molybdenum or tungsten alloy, in particular molybdenum or a molybdenum alloy.
- the barrier layer forms a barrier for components migrating out of and / or over the bulk back electrode layer, in particular diffusing or diffusing components, and / or for migrating out of and / or over the contact layer, in particular diffusing or diffusing, Represents components.
- the barrier layer accordingly preferably constitutes a bidirectionally acting barrier.
- the barrier layer may also be provided in this context for the barrier layer to be a barrier for alkali ions, in particular sodium ions, selenium or selenium compounds, sulfur or sulfur compounds, metals, in particular Cu, In, Ga, Fe, Ni, Ti, Zr, Hf, V, Nb, Ta, Al and / or W, and / or compounds containing alkali metal ions, eg sodium ions.
- the barrier layer contains or is essentially formed from at least one metal nitride, in particular TiN, MoN, TaN, ZrN and / or WN, at least a metal carbide, at least one metal boride and / or at least one
- Metal silicon nitride in particular TiSiN, TaSiN and / or WSiN.
- the metal of the metal nitrides, metal silicon nitrides, metal carbides and / or metal borides preferably represents titanium, molybdenum, tantalum or tungsten. Such metal nitrides are preferred as
- Barrier materials in the sense of the present invention, for example TiN, in which the metal is deposited with respect to nitrogen stoichiometrically or more than stoichiometrically, ie with excess nitrogen.
- the conductive barrier layer provides a barrier for, in particular dopants, migrating out of and / or via the back electrode layer, in particular dopants, and for diffusing from and / or via the contact layer, in particular from the semiconductor absorber layer. Diffused component, in particular dopants, is. Due to the fact of the presence of a barrier layer, it is, for example possible to significantly reduce the purity of the bulk back electrode material.
- the bulk back electrode layer may be contaminated with at least one element selected from the group consisting of Fe, Ni, Ti, Zr, Hf, V, Nb, Ta, Al, W and / or Na and / or with compounds of said elements, without the efficiency of the thin-film solar cell or module having the back electrode according to the invention being permanently impaired.
- a further advantage of the use of a barrier layer with the multi-layer back electrodes according to the invention manifests itself, when used in thin-film solar cells and modules, in that the thickness of the semiconductor absorber layer, for example the semiconductor layer
- Chalcopyrite or kesterite layer compared to conventional system can be significantly reduced. Because by the barrier layer, in particular when in the form of metal nitrides, for example titanium nitride, or containing such metal or titanium nitrides present, the sunlight passing through the semiconductor absorber layer is reflected very effectively, so that achieve a very good quantum efficiency by way of the double passage through the semiconductor absorber layer leaves. Due to the presence of the said Barrier layer in the back electrode according to the invention or in thin-film solar cells or modules, containing this back electrode, the average thickness of the semiconductor absorber layer to z. B. values in the range of 0.4 ⁇ to 1.5 ⁇ , for example, be reduced to values in the range of 0.5 ⁇ to 1.2 ⁇ .
- the barrier layer of the back electrode according to the invention has barrier properties, in particular bidirectional barrier properties, to dopants, in particular to dopants for the semiconductor absorber layer and / or from the semiconductor absorber layer, to chalcogens such as selenium and / or sulfur and chalcogen compounds, compared to the metallic constituents of Semiconductor absorber layer such as Cu, In, Ga, Sn and / or Zn, to impurities such as iron and / or nickel from the bulk back electrode layer and / or to components and / or impurities from the substrate.
- the bidirectional barrier properties to dopants from the substrate are intended, on the one hand, to enrich for the interface of the back electrode or contact layer to the semiconductor absorber layer with alkali ions, e.g. out diffusing from a glass substrate, prevent. Such accumulations are known as a reason for semiconductor layer separations.
- the conductive barrier layer is said to help avoid adhesion problems.
- the barrier property for dopants, which can be diffused or diffused out of the semiconductor absorber should prevent dopant from being lost to the bulk back electrode in this way, thus depleting the semiconductor absorber of dopant, which would significantly reduce the efficiency of the solar cell or of the solar module.
- molybdenum back electrodes can absorb significant amounts of sodium dopant.
- the bidirectional conductive barrier layer is therefore intended to enable the conditions for a targeted metering of dopant into the semiconductor absorber layer in order to be able to achieve reproducibly high efficiencies of the solar cells and modules.
- the barrier property with respect to chalcogens is intended to prevent them from reaching the back electrode and forming metal chalcogenide compounds there.
- tradi- These chalcogenide compounds eg MoSe
- Impurities of the bulk back electrode material, such as Fe and Ni are so-called deep impurities for chalcopyrite semiconductors (semiconductors) and are therefore to be kept away from the semiconductor absorber layer via the barrier layer.
- the metal of the first layer and the metal of the second layer of the contact layer coincide and / or that the metal of the first layer and / or the metal of the second layer of the contact layer coincide with the metal of the bulk back electrode.
- the contact layer, the first and / or the second layer of the contact layer at least one dopant for a semiconductor absorber layer of a thin film solar cell, in particular at least one element selected from the group sodium, potassium and lithium and / or at least a compound of these elements, preferably with oxygen, selenium, sulfur, boron and / or halogens, for example iodine or fluorine, and / or at least one alkali metal bronze, in particular sodium and / or potassium bronze, preferably with a metal selected from molybdenum, tungsten, tantalum and / or niobium.
- Suitable bronzes include mixed oxides or mixtures of mixed oxides and oxides, for example Na 2 MoO 2 + WO.
- the doped contact layer is obtainable, for example, by applying the metal chalcogenide doped with the dopant in the metal chalcogenide source.
- the average thickness of the bulk back electrode layer is in the range from 50 nm to 500 nm, in particular in the range from 80 nm to 250 nm, and / or the average thickness of the barrier layer in the range from 10 nm to 250 nm nm, in particular in the range of 20 nm to 150 nm, and / or the average thickness of the contact layer in the range of 2 nm to 200 nm, in particular in the range of 5 nm to 100 nm.
- the total thickness of the multilayer back electrode is preferably to be set such that the specific total resistance of the back electrode according to the invention is 50 micro ohm * cm, preferably 10
- microOhm * cm does not exceed. Under these conditions, ohmic losses can be reduced even further in a series-connected module.
- the bulk back electrode layer contains molybdenum and / or tungsten, in particular molybdenum, or is essentially formed from molybdenum and / or tungsten, in particular molybdenum, which contains conductive barrier layer TiN or essentially consists of TiN is, and contains, in particular dopant (s) containing, contact layer MoSe 2 or substantially of MoSe 2 is formed.
- the dopant in particular sodium ions
- the contact layer and / or in the semiconductor absorber layer of the thin-film solar cell or module having the return electrode in a dose in the range of 10 13 to 10 atoms / cm, preferably in one dose is present in the range from 10 to 10 atoms / cm 2 .
- the multilayer back electrode of the invention has proven itself.
- temperatures above 300 or above 350 ° C are used regularly. Frequently, these temperatures are also in the range of 500 ° C to 600 ° C. At such temperatures migrate, in particular diffuse, dopants, in particular sodium ions or sodium compounds from the doped contact layer in the
- the selected layers of the multilayer back electrode in particular the bulk back electrode and / or the conductive barrier layer, to be composed such that their linear thermal expansion coefficient matches that of the semiconductor absorber and / or the semiconductor Substrates are adjusted. Therefore, in particular, the bulk back electrode and / or the barrier layer of the thin film solar cells and modules according to the invention should preferably be composed so that a linear thermal expansion coefficient of 14 * 10 "6" K, preferably 9 * 10 "6" K is not exceeded.
- the object underlying the invention is also achieved by photovoltaic thin-film solar cells and modules containing the multilayer back electrode according to the invention.
- the thin-film solar cell according to the invention has, in this order, at least one substrate layer, at least one back electrode layer according to the invention, at least one conductive barrier layer, at least one, in particular directly adjacent to the contact layer,
- Semiconductor absorber layer in particular a chalcopyrite or kesterite semiconductor absorber layer, and at least one front electrode.
- those thin film solar cells or modules are advantageous in which between the semiconductor absorber layer and the front electrode at least one buffer layer (also called first buffer layer), in particular at least one layer containing or substantially formed of CdS or a CdS-free layer, in particular containing or substantially of Zn (S, OH) or ln 2 S 3 , and / or at least one layer (also called second buffer layer) containing and essentially formed from intrinsic zinc oxide and / or high-resistance zinc oxide.
- buffer layer also called first buffer layer
- second buffer layer also called at least one layer containing and essentially formed from intrinsic zinc oxide and / or high-resistance zinc oxide.
- the semiconductor absorber layer comprises a quaternary IB-IIIA-VIA chalcopyrite layer, in particular a Cu (ln, Ga) Se 2 layer, a pentameric IB-IIIA-VIA chalcopyrite layer, in particular a Cu (In, Ga) (Sei_ x, S x) 2 layer, or a Kesterit- layer, in particular a Cu 2 ZnSn (Se x, Si_ x) 4 film, wherein x has any value from 0 to 1 represents or includes.
- the kesterite layers are generally based on an I Bl IA-1 VA-VIA structure. By way of example, mention may be made of Cu 2 ZnSnSe 4 and Cu 2 ZnSnS 4 .
- the average thickness of the semiconductor absorber layer is usually in the range of 400 nm to 2500 nm, more preferably in the range of 500 nm to 1500 nm, and preferably in the range of 800 nm to 1200 nm.
- Photovoltaic thin-film solar modules according to the invention comprise at least two, in particular a plurality of, in particular monolithically integrated series-connected, thin-film solar cells according to the invention.
- a thin-film solar module according to the invention 20 to 150 or 50 to 100 thin-film solar cells connected in series according to the invention may be present.
- the specific total resistance of the multilayer back electrode according to the invention should, in a suitable embodiment, not exceed 50 micro Ohm * cm, preferably not over 10 microohms * cm. In this way, a low-loss, monolithically integrated series connection should be ensured.
- the object on which the invention is based is furthermore achieved by a method for producing a thin-film photovoltaic solar cell according to the invention or a thin-film photovoltaic solar module according to the invention, comprising the steps:
- such an embodiment is advantageous in which the bulk back electrode layer, the barrier layer, the contact layer, the metals of the semiconductor absorber layer and / or the dopant (s) are applied by sputtering (sputter coating), in particular DC magnetron sputtering.
- sputtering sputter coating
- DC magnetron sputtering DC magnetron sputtering
- the dopant (s) are applied together with at least one component of the contact layer and / or the absorber layer, in particular from a common mixing or sintering target.
- the mixed or sintered target comprises at least one dopant selected from a sodium compound, a sodium molybdenum bronze and a sodium tungsten bronze, in particular in a matrix component selected from MoSe 2 , WSe contains 2 , Mo, W, copper and / or gallium.
- a Molybdenum selenide target with sodium sulfite or sodium sulfide be added as a dopant.
- the present invention is accompanied by the surprising finding that with the structure of the multilayer back electrode according to the invention, relatively thin layer thicknesses of the semiconductor absorber layer can be realized in thin-film solar cells or modules without having to accept losses in efficiency. With the systems according to the invention often even higher efficiencies set. In this regard, it has been found that the sunlight-reflecting barrier layers contribute to further electricity generation. The sunlight passes through the semiconductor absorber layer twice here. Surprisingly, it has also been found that an improved effect is also associated with the fact that the semiconductor absorber layer, e.g. based on a chalcopyrite or kesterite system, deposited directly on a molybdenum contact layer.
- Semiconductor absorber layer influenced.
- the systems according to the invention can also be used to reduce the efficiency losses due to uncontrolled reactions of the chalcogen, in particular selenium, during the formation of the semiconductor absorber layer with the bulk metal oxide. Avoid return electrode.
- the multilayer back electrodes of the present invention allow the use of contaminated bulk back electrode material without adversely affecting the efficiency of the thin film solar cell.
- Semiconductor absorber layer forming components can be more selectively adjusted and maintained.
- Figure 1 is a schematic cross-sectional view through a subsystem of a thin film solar cell, comprising a first embodiment of a multi-layer back electrode according to the invention
- Figure 2 is a schematic cross-sectional view through a subsystem of a thin film solar cell, comprising a second embodiment of a multi-layer back electrode according to the invention
- Figure 3 is a schematic cross-sectional view through a subsystem of a thin film solar cell, comprising a third embodiment of a multi-layer back electrode according to the invention.
- a bulk back electrode layer 4 made of molybdenum is present in the embodiment of a multilayer back electrode 1 according to the invention depicted in FIG.
- the contact layer 8a may also be admixed with at least one dopant, for example sodium ions or a sodium compound, in particular sodium sulfite or sodium sulfide.
- the contact layer 8b in the second embodiment of a multilayer electrode 1 according to the invention shown in FIG. 2, represents a metal layer, for example a molybdenum or tungsten layer.
- this contact layer 8b is also provided with at least one dopant be, for example, sodium ions or a sodium compound, in particular sodium sulfite or sodium sulfide.
- the contact layer 8c constitutes a two-layer system comprising a first layer 10 of a metal, for example molybdenum or tungsten, which adjoins or adjoins the barrier layer 6, and a second layer Layer 12 of a metal chalcogenide, for example, molybdenum selenide and / or tungsten selenide, which is adjacent to the first layer 10 and thus not adjacent to the barrier layer 6.
- a metal for example molybdenum or tungsten
- a metal chalcogenide for example, molybdenum selenide and / or tungsten selenide
- the contact layer 8c preferably at least one dopant before, for example, sodium ions or one Sodium compound, in particular sodium sulfite or sodium sulfide.
- the dopant may be present in the first and / or the second layer.
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Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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KR1020147027726A KR20140148407A (ko) | 2012-04-02 | 2013-02-19 | 광전 박막 태양 전지용 다층 후면 전극, 박막 태양 전지 및 모듈을 제조하기 위한 다층 후면 전극의 사용, 다층 후면 전극을 포함한 광전 박막 태양 전지 및 모듈, 및 그 제조 방법 |
JP2015503793A JP2015514325A (ja) | 2012-04-02 | 2013-02-19 | 光起電性薄膜太陽電池セル用の多層裏面電極、該多層裏面電極を薄膜太陽電池セル及びモジュールの製造に使用する方法、多層裏面電極を含んだ光起電性薄膜太陽電池セル及びモジュール並びにその製造方法 |
US14/389,894 US20150068579A1 (en) | 2012-04-02 | 2013-02-19 | Multilayer back electrode for a photovoltaic thin-film solar cell, use thereof for manufacturing thin-film solar cells and modules, photovoltaic thin-film solar cells and modules containing the multilayer back electrode and a manufacturing method |
CN201380028772.XA CN104335357A (zh) | 2012-04-02 | 2013-02-19 | 用于光伏薄层太阳能电池的多层背电极、用于制造薄层太阳能电池和薄层太阳能模块的多层背电极的应用、包含多层背电极的光伏薄层太阳能电池和模块及制造方法 |
AU2013242990A AU2013242990A1 (en) | 2012-04-02 | 2013-02-19 | Multi-layer back electrode for a photovoltaic thin-film solar cell, use of the same for producing thin-film solar cells and modules, photovoltaic thin-film solar cells and modules containing the multi-layer back electrode and method for the production thereof |
EP13705161.1A EP2834852B8 (de) | 2012-04-02 | 2013-02-19 | Mehrschicht-rückelektrode für eine photovoltaische dünnschichtsolarzelle, verwendung derselben für die herstellung von dünnschichtsolarzellen und -modulen, photovoltaische dünnschichtsolarzellen und -module enthaltend die mehrschicht-rückelektrode sowie ein verfahren zu deren herstellung |
IN8077DEN2014 IN2014DN08077A (de) | 2012-04-02 | 2014-09-26 |
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DE102012205375A DE102012205375A1 (de) | 2012-04-02 | 2012-04-02 | Mehrschicht-Rückelektrode für eine photovoltaische Dünnschichtsolarzelle, Verwen-dung der Mehrschicht-Rückelektrode für die Herstellung von Dünnschichtsolarzellen und -modulen, photovoltaische Dünnschichtsolarzellen und -module enthaltend die Mehrschicht-Rückelektrode sowie ein Verfahren zur Herstellung photovoltaischer Dünnschichtsolarzellen und -module |
DE102012205375.1 | 2012-04-02 |
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US (1) | US20150068579A1 (de) |
EP (1) | EP2834852B8 (de) |
JP (1) | JP2015514325A (de) |
KR (1) | KR20140148407A (de) |
CN (2) | CN104335357A (de) |
AU (1) | AU2013242990A1 (de) |
DE (1) | DE102012205375A1 (de) |
IN (1) | IN2014DN08077A (de) |
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- 2013-02-19 KR KR1020147027726A patent/KR20140148407A/ko not_active Application Discontinuation
- 2013-02-19 EP EP13705161.1A patent/EP2834852B8/de active Active
- 2013-02-19 CN CN201380028772.XA patent/CN104335357A/zh active Pending
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- 2013-02-19 JP JP2015503793A patent/JP2015514325A/ja active Pending
- 2013-02-19 US US14/389,894 patent/US20150068579A1/en not_active Abandoned
- 2013-02-19 WO PCT/EP2013/053224 patent/WO2013149757A1/de active Application Filing
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AU2013242990A1 (en) | 2014-11-20 |
EP2834852B8 (de) | 2020-03-04 |
EP2834852B1 (de) | 2019-12-25 |
JP2015514325A (ja) | 2015-05-18 |
EP2834852A1 (de) | 2015-02-11 |
DE102012205375A1 (de) | 2013-10-02 |
CN111509059A (zh) | 2020-08-07 |
IN2014DN08077A (de) | 2015-05-01 |
CN104335357A (zh) | 2015-02-04 |
KR20140148407A (ko) | 2014-12-31 |
US20150068579A1 (en) | 2015-03-12 |
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