EP2319071A1 - Verfahren zur herstellung von keramischen passivierungsschichten auf silizium für solarzellenfertigung - Google Patents
Verfahren zur herstellung von keramischen passivierungsschichten auf silizium für solarzellenfertigungInfo
- Publication number
- EP2319071A1 EP2319071A1 EP09778103A EP09778103A EP2319071A1 EP 2319071 A1 EP2319071 A1 EP 2319071A1 EP 09778103 A EP09778103 A EP 09778103A EP 09778103 A EP09778103 A EP 09778103A EP 2319071 A1 EP2319071 A1 EP 2319071A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polysilazane
- silicon
- hydrogen
- passivation
- layers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
- H10F71/129—Passivating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1229—Composition of the substrate
- C23C18/1245—Inorganic substrates other than metallic
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/65—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials
- H10P14/6516—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed after formation of the materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/69—Inorganic materials
- H10P14/692—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses
- H10P14/6921—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon
- H10P14/6922—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon the material containing Si, O and at least one of H, N, C, F or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6326—Deposition processes
- H10P14/6342—Liquid deposition, e.g. spin-coating, sol-gel techniques or spray coating
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/66—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials
- H10P14/668—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials
- H10P14/6681—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si
- H10P14/6687—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si the compound comprising silicon and nitrogen
- H10P14/6689—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si the compound comprising silicon and nitrogen the compound being a silazane
-
- 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
-
- 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 method for producing a passivation layer on crystalline silicon for producing solar cells by converting a thin (10 - 200 nm) coating containing as a main component perhydropolysilazane (hereinafter called PHPS) or an organic polysilazane and during the conversion as a hydrogen source for volume passivation.
- PHPS perhydropolysilazane
- the conversion takes place at temperatures of 200 to 1000 ° C.
- photovoltaics as an alternative technology for energy supply is very important.
- the production costs of photovoltaic modules must be minimized.
- the efficiency of solar modules must be increased and more cost-effective production technologies developed.
- dielectric layers of thermally grown SiO 2 or PECVD SiNx are applied.
- the application takes place on the n-type silicon layer and can additionally take place on the p-type silicon layer (backside passivation).
- hydrogen offers the possibility to deactivate volume defects such as strained bonds or charged impurities and thus to improve the electrical properties of solar cells.
- the volume passivation of silicon solar cells takes place by diffusion from hydrogen-rich layers.
- JP 05243212 A describes polysilazane films with good covering properties and their use for coating semiconductor devices. By sintering and oxidation at relatively low temperatures, a passivation layer consisting of a fine hygroscopic silicon oxide film is formed.
- JP-A-2005033063 polysilazane which is applied to Silikoneinkristallsubstraten at normal temperatures with the spin-coating method and then at 600 - 800 0 C are fired in an atmosphere containing nitrogen. In this way, it is possible to produce a low-reflection film on a silicon nitride solar cell as a main component.
- the present invention solves the problem and relates to a method for the passivation of crystalline silicon with polysilazanes, by
- R 1 , R ", R” 1 are the same or different and are independently hydrogen or an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl) alkyl radical, wherein n is an integer and n is so dimensioned that the polysilazane has a number-average molecular weight of 150 to 150,000 g / mol,
- R ', R ", R'" independently of one another represent a radical from the group hydrogen, methyl, ethyl, propyl, iso-propyl, butyl, iso-butyl, tert-butyl, phenyl , ToIyI, vinyl or 3- (triethoxysilyl) -propyl, 3- (trimethoxysilylpropyl).
- the coating according to the invention contains polysilazanes of the formula (2)
- R ', R ", R” 1 , R *, R * * and R * * * independently represent hydrogen or an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl) alkyl radical, where n and p are so dimensioned that the polysilazane has a number average molecular weight of 150 to 150,000 g / mol.
- R ', R'"and R *** are hydrogen and R", R * and R ** are methyl;
- R ', R' "and R *** are hydrogen and R", R * is methyl and R ** is vinyl;
- R ', R " ⁇ R * and R * ** are hydrogen and R" and R ** are methyl.
- R ", R”, R '", R *, R **, R * **, R 1 , R 2 and R 3 independently of one another represent hydrogen or an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl) alkyl radical, where n, p and q are dimensioned such that the 5
- Polysilazane has a number average molecular weight of 150 to 150,000 g / mol.
- R ', R " 1 and R *** are hydrogen and R"
- R * , R ** and R 2 are methyl
- R 3 is (triethoxysilyl) propyl and R 1 is alkyl or hydrogen
- the proportion of polysilazane in the solvent is 1-80% by weight of polysilazane, preferably 2-50% by weight, particularly preferably 3-10% by weight.
- Particularly suitable solvents are organic, preferably aprotic, solvents which contain no water and no reactive groups such as hydroxyl or amino groups and which are inert to the polysilazane.
- examples are aromatic or aliphatic hydrocarbons and mixtures thereof.
- aliphatic or aromatic hydrocarbons such as aliphatic or aromatic hydrocarbons, halogenated hydrocarbons, esters such as ethyl acetate or butyl acetate, ketones such as acetone or methyl ethyl ketone, ethers such as tetrahydrofuran or dibutyl ether, and mono- and polyalkylene glycol dialkyl ethers (glymes) or mixtures of these solvents.
- Additional constituents of the polysilazane solution may be catalysts, such as organic amines, acids and metals or metal salts or mixtures of these compounds, which accelerate the film formation process.
- the catalysts are preferably used in amounts of 0.001 to 10%, in particular 0.01 to 6%, particularly preferably 0.1 to 3%, based on the weight of the polysilazane.
- Further constituents may be additives for substrate wetting and film formation or inorganic nanoparticles such as, for example, SiO 2 , TiO 2 , ZnO, ZrO 2 or Al 2 O 3 .
- the layers produced preferably have a layer thickness of 10 to 200 nm.
- the layers produced have a hydrogen content which is driven out of the layer with increasing ceramization temperature.
- the inventive method it is possible from the applied amorphous polysilazane in a first step at temperatures of 200 - 1000 0 C to drive within 0.1 to 30 minutes the hydrogen from the layer and to convert it into a transparent ceramic phase.
- the resulting ceramic phase has a different composition.
- the release of the passivating hydrogen can take place in an air atmosphere and in a nitrogen atmosphere individually, consecutively or alternately.
- the heat input can be carried out by a heatable furnace, which is operated under nitrogen or air and which is controllable from 200 to 1000 ° C.
- the coatings according to the invention are thus suitable in addition to the surface passivation in addition to the hydrogen passivation of the silicon substrate. With the method known hitherto in the prior art, complicated vacuum processes are necessary for this purpose.
- Substrates p-type silicon: The substrate used was 1 ⁇ cm FZ p-type silicon wafer with a thickness of 250 ⁇ m. After standard RCA cleaning, the different polysilazane layers were applied.
- n-type silicon The POCI emitter diffusion on FZ silicon wafers of 250 nm thickness in a standard oven resulted in emitter layer resistances of 40 ⁇ / sq.
- the lifetime was determined on the basis of the photoconductivity decrease (QSSPC) on a Sinton WCT-100 apparatus. The longer the life, the better the passivation.
- the layer composition was carried out on a polysilazane powder which was ceramified under the same conditions as those on the silicon, respectively.
- Table 1 :
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008044769A DE102008044769A1 (de) | 2008-08-28 | 2008-08-28 | Verfahren zur Herstellung von keramischen Passivierungsschichten auf Silizium für die Solarzellenfertigung |
| PCT/EP2009/006160 WO2010022916A1 (de) | 2008-08-28 | 2009-08-26 | Verfahren zur herstellung von keramischen passivierungsschichten auf silizium für solarzellenfertigung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2319071A1 true EP2319071A1 (de) | 2011-05-11 |
Family
ID=41258872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09778103A Ceased EP2319071A1 (de) | 2008-08-28 | 2009-08-26 | Verfahren zur herstellung von keramischen passivierungsschichten auf silizium für solarzellenfertigung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8482106B2 (de) |
| EP (1) | EP2319071A1 (de) |
| CN (1) | CN102017097B (de) |
| DE (1) | DE102008044769A1 (de) |
| WO (1) | WO2010022916A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5670777B2 (ja) * | 2011-02-10 | 2015-02-18 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
| US20150303318A1 (en) * | 2012-01-06 | 2015-10-22 | Hitachi Chemical Company, Ltd. | Composition for forming passivation film, semiconductor substrate provided with passivation film and production method therefor, and photovoltaic cell element and production method therefor |
| TW201417319A (zh) | 2012-08-24 | 2014-05-01 | Ind Tech Res Inst | 矽晶太陽能電池及其矽晶太陽能電池模組 |
| FI20125986A7 (fi) * | 2012-09-24 | 2014-03-25 | Optitune Oy | Menetelmä funktionaalisten kerrosten muodostamiseksi piisubstraateille |
| FI20125987A7 (fi) | 2012-09-24 | 2014-03-25 | Optitune Oy | Menetelmä valosähköisessä laitteessa käytettävän piisubstraatin passivoimiseksi |
| FI20125988A7 (fi) * | 2012-09-24 | 2014-03-25 | Optitune Oy | Menetelmä n-tyypin piisubstraatin modifioimiseksi |
| US9991182B2 (en) | 2013-07-19 | 2018-06-05 | Az Electronic Materials (Luxembourg) S.A.R.L. | Encapsulation material for light emitting diodes |
| CN107731731B (zh) * | 2017-10-11 | 2020-04-21 | 苏州研材微纳科技有限公司 | 陶瓷体上硅衬底的制备方法 |
| DE102018206452A1 (de) * | 2018-04-26 | 2019-10-31 | Evonik Degussa Gmbh | Siliciumbasierte Schutzschichten für Bauteile photoelektrochemischer Zellen |
| CN108878287A (zh) * | 2018-06-29 | 2018-11-23 | 苏州研材微纳科技有限公司 | 硅衬底的加工钝化保护方法 |
| JP7140040B2 (ja) * | 2019-04-17 | 2022-09-21 | 信越化学工業株式会社 | アルコキシシリル基含有有機シラザン化合物及びその製造方法並びにこれを含む組成物及び硬化物 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005033063A (ja) * | 2003-07-08 | 2005-02-03 | Sharp Corp | 太陽電池用反射防止膜およびその作製方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395460A (en) * | 1981-09-21 | 1983-07-26 | Dow Corning Corporation | Preparation of polysilazane polymers and the polymers therefrom |
| US4540803A (en) * | 1983-11-28 | 1985-09-10 | Dow Corning Corporation | Hydrosilazane polymers from [R3 Si]2 NH and HSiCl3 |
| US4842888A (en) * | 1988-04-07 | 1989-06-27 | Dow Corning Corporation | Ceramic coatings from the pyrolysis in ammonia of mixtures of silicate esters and other metal oxide precursors |
| JP3015104B2 (ja) * | 1991-07-16 | 2000-03-06 | 触媒化成工業株式会社 | 半導体装置およびその製造方法 |
| JPH05243212A (ja) | 1992-02-28 | 1993-09-21 | Fujitsu Ltd | 半導体装置の製造方法 |
| KR100307839B1 (ko) * | 1995-07-13 | 2002-11-22 | 토넨제네랄세키유 가부시키가이샤 | 세라믹스질물질형성용조성물및세라믹스질물질의제조방법 |
| JP2000012536A (ja) * | 1998-06-24 | 2000-01-14 | Tokyo Ohka Kogyo Co Ltd | シリカ被膜形成方法 |
| DE102004054661A1 (de) * | 2004-11-12 | 2006-05-18 | Clariant International Limited | Verwendung von Polysilazanen zur Beschichtung von Metallbändern |
-
2008
- 2008-08-28 DE DE102008044769A patent/DE102008044769A1/de not_active Withdrawn
-
2009
- 2009-08-26 CN CN200980114020.9A patent/CN102017097B/zh not_active Expired - Fee Related
- 2009-08-26 EP EP09778103A patent/EP2319071A1/de not_active Ceased
- 2009-08-26 WO PCT/EP2009/006160 patent/WO2010022916A1/de not_active Ceased
- 2009-08-26 US US13/060,324 patent/US8482106B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005033063A (ja) * | 2003-07-08 | 2005-02-03 | Sharp Corp | 太陽電池用反射防止膜およびその作製方法 |
Non-Patent Citations (2)
| Title |
|---|
| CLARIANT: "AQUAMICA Hydrophilic Super Hard Coating", INTERNET CITATION, 10 June 2004 (2004-06-10), pages 1 - 12, XP002732000, Retrieved from the Internet <URL:http://www.probaf.co.kr/images/service/PRO%20GUARD%20GLASS%20COATING.pdf> [retrieved on 20141104] * |
| See also references of WO2010022916A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8482106B2 (en) | 2013-07-09 |
| US20110156221A1 (en) | 2011-06-30 |
| DE102008044769A1 (de) | 2010-03-04 |
| CN102017097A (zh) | 2011-04-13 |
| CN102017097B (zh) | 2015-03-11 |
| WO2010022916A1 (de) | 2010-03-04 |
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