Patents by Inventor Erik Sauar
Erik Sauar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20150068597Abstract: The surface recombination velocity of a silicon sample is reduced by deposition of a thin hydrogenated amorphous silicon or hydrogenated amorphous silicon carbide film, followed by deposition of a thin hydrogenated silicon nitride film. The surface recombination velocity is further decreased by a subsequent anneal. Silicon solar cell structures using this new method for efficient reduction of the surface recombination velocity is claimed.Type: ApplicationFiled: November 14, 2014Publication date: March 12, 2015Applicants: REC SOLAR PTE, LTD., INSTITUTT FOR ENERGITEKNIKK, UNIVERSITETET I OSLOInventors: Alexander ULYASHIN, Andreas BENTZEN, Bengt SVENSSON, Arve HOLT, Erik SAUAR
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Patent number: 8916768Abstract: The surface recombination velocity of a silicon sample is reduced by deposition of a thin hydrogenated amorphous silicon or hydrogenated amorphous silicon carbide film, followed by deposition of a thin hydrogenated silicon nitride film. The surface recombination velocity is further decreased by a subsequent anneal. Silicon solar cell structures using this new method for efficient reduction of the surface recombination velocity is claimed.Type: GrantFiled: April 12, 2006Date of Patent: December 23, 2014Assignees: Rec Solar Pte. Ltd., Universitetet I Oslo, Instititt for EnergiteknikkInventors: Alexander Ulyashin, Andreas Bentzen, Bengt Svensson, Arve Holt, Erik Sauar
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Publication number: 20140238463Abstract: This invention relates to a method for producing solar cells, and photovoltaic panels thereof. The method for producing solar panels comprises employing a number of semiconductor wafers and/or semiconductor sheets of films prefabricated to prepare them for back side metallization, which are placed and attached adjacent to each other and with their front side facing downwards onto the back side of the front glass, before subsequent processing that includes depositing at least one metal layer covering the entire front glass including the back side of the attached wafers/sheets of films. The metallic layer is then patterned/divided into electrically isolated contacts for each solar cell and into interconnections between adjacent solar cells.Type: ApplicationFiled: May 2, 2014Publication date: August 28, 2014Applicant: REC SOLAR PTE. LTD.Inventors: Martin NESE, Erik SAUAR, Andreas BENTZEN, Paul Alan BASORE
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Patent number: 8753957Abstract: This invention relates to a method for producing solar cells, and photovoltaic panels thereof. The method for producing solar panels comprises employing a number of semiconductor wafers and/or semiconductor sheets of films prefabricated to prepare them for back side metallization, which are placed and attached adjacent to each other and with their front side facing downwards onto the back side of the front glass, before subsequent processing that includes depositing at least one metal layer covering the entire front glass including the back side of the attached wafers/sheets of films. The metallic layer is then patterned/divided into electrically isolated contacts for each solar cell and into interconnections between adjacent solar cells.Type: GrantFiled: April 2, 2009Date of Patent: June 17, 2014Assignee: Rec Solar Pte. Ltd.Inventors: Martin Nese, Erik Sauar, Andreas Bentzen, Paul Alan Basore
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Publication number: 20140096819Abstract: A rear contact heterojunction solar cell and a fabricating method. The solar cell comprises a silicon substrate having a passivating layer and an intrinsic amorphous silicon layer. At a back side of the intrinsic amorphous silicon layer, an emitter layer and a base layer are provided. Interposed between these emitter and base layers is a separation layer comprising an electrically insulating material. This separation layer as well as the base layer and emitter layer may be generated by vapour deposition. Due to such processing, adjacent regions of the emitter layer and the separating layer and adjacent regions of the base layer and the separating layer partially laterally overlap in overlapping areas in such a way that at least a part of the separating layer is located closer to the substrate than an overlapping portion of the respective one of the emitter layer and the base layer.Type: ApplicationFiled: May 25, 2012Publication date: April 10, 2014Applicant: REC Modules Pte., Ltd.Inventors: Martin Kirkengen, Erik Sauar
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Publication number: 20130228160Abstract: The present invention relates to a method for production of photovoltaic wafers and abrasive slurries for multi-wire sawing of wafers for photovoltaic applications, and more specific to abrasive slurries which are easy to remove from the wafers after sawing, where the abrasive slurry comprises one part recycled abrasive slurry, an alkali in sufficient amount to provide a pH in the abrasive slurry mixture in the range from 6.0 to 9.0, and one part novel abrasive slurry in an amount sufficient to provide an ion content in the abrasive slurry mixture to provide an electric conductivity of less than 50 ?S/cm.Type: ApplicationFiled: October 5, 2011Publication date: September 5, 2013Applicant: REC WAFER PTE. LTD.Inventors: Mohan Menon, Anne Lohne, Erik Sauar, Stian Sannes
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Publication number: 20130206206Abstract: A method is provided of fabricating a photo voltaic generator panel (15) including a polymer back sheet (24) with at least one attachment feature (21) so as to provide means of attaching the panel to a structural support (25) upon subsequent installation. At least one polymer attachment feature (21) is applied to the outer side of the polymer back sheet of the panel during the manufacturing process for the panel whereby the attachment feature projects with respect to the back sheet. The application may be in conjunction with a lamination process, or subsequent to the lamination process, or as an integral part of the back sheet manufacturing process. The attachment feature is adapted to engage with a corresponding feature (26) or features to be found on a support structure (25) located at a site for the installation of the panel. The said at least one polymer attachment feature and said outer side of the polymer back sheet have a similar thermal expansion coefficient.Type: ApplicationFiled: April 27, 2011Publication date: August 15, 2013Applicant: REC SOLAR ASInventors: Borge Bjorneklett, Oystein Holm, Erik Sauar
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Publication number: 20120085403Abstract: Method for providing at least one contact on a back surface of a solar cell comprising a silicon substrate comprising depositing a passivating layer onto the silicon substrate and thereafter providing at least one contact site and further providing a patterned exposed silicon surface. Then depositing a metal layer and annealing the structure to form metal silicide. Thereafter the process involves optionally removing excess metal and finally applying metal onto the silicide to form at least one contact. A solar cell comprising a back surface, the back surface comprising a contact, produced by the above mentioned method. A contact for back surface of a solar cell comprising a silicon substrate, an amorphous silicon layer deposited onto the silicon substrate, a reflective layer with at least one opening deposited onto the amorphous silicon layer, in the at least one opening there resides silicide, with additional metal covering the silicide.Type: ApplicationFiled: January 27, 2010Publication date: April 12, 2012Applicant: RENEWABLE ENERGY CORPORATION ASAInventors: Erik Sauar, Andreas Bentzen, Karl Ivar Lundahl
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Publication number: 20120024368Abstract: Method for producing back contacts on silicon solar cells and an interconnection between silicon solar cells where the front surface has been fully treated and the back surface has been processed to the point where the said solar cells can be contacted on the back surface. The method further includes: a) attaching the solar cells onto a transparent superstrate, thereby forming a structure, b) depositing a passivating layer onto the back surface of the structure, c) depositing a silicon material layer onto the back surface of the structure, d) separating the silicon material layer by first areas, e) providing contact sites in areas, f) depositing a metal layer onto the back surface of the structure, g) heating the structure to form silicide, h) optionally opening the metal layer in areas, and i) depositing metal onto the silicide. Device includes solar cells with back contacts and interconnections produced by the method.Type: ApplicationFiled: January 20, 2010Publication date: February 2, 2012Applicant: RENEWABLE ENERGY CORPORATION ASAInventors: Erik Sauar, Andreas Bentzen
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Patent number: 7967915Abstract: A method for reducing attraction forces between wafers (4) is provided. This method includes the step of, after sawing and before dissolution of the adhesive (5), introducing spacers (6) between wafers (4). A wafer singulation method and an agent for use in the method are also provided.Type: GrantFiled: June 26, 2006Date of Patent: June 28, 2011Assignee: REC Scanwafer ASInventors: Erik Sauar, Per Arne Wang
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Publication number: 20110120531Abstract: This invention relates to a method for producing solar cells, and photovoltaic panels thereof. The method for producing solar panels comprises employing a number of semiconductor wafers and/or semiconductor sheets of films prefabricated to prepare them for back side metallization, which are placed and attached adjacent to each other and with their front side facing downwards onto the back side of the front glass, before subsequent processing that includes depositing at least one metal layer covering the entire front glass including the back side of the attached wafers/sheets of films. The metallic layer is then patterned/divided into electrically isolated contacts for each solar cell and into interconnections between adjacent solar cells.Type: ApplicationFiled: April 2, 2009Publication date: May 26, 2011Applicant: Renewable Energy Corporation ASAInventors: Martin Nese, Erik Sauar, Andreas Bentzen, Paul Alan Basore
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Patent number: 7920738Abstract: The invention regards a method and a system for establishing correspondence between wafers and solar cells produced from said wafers. The method comprises for each wafer and each solar cell, providing an image of the wafer, providing an image of the cell, comparing the wafer image to the cell image, upon match between a cell image and a wafer image, assigning the current cell to the current wafer. The system comprises at least one imaging device for providing images of the wafers and the cells, a processing unit for comparing a wafer image to a cell image, and upon match between a cell image and a wafer image, assigning the current cell to the current wafer, and a memory unit.Type: GrantFiled: February 18, 2005Date of Patent: April 5, 2011Assignee: Renewable Energy Corporation ASAInventors: Erik Sauar, Tor Christian Tuv
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Publication number: 20110005569Abstract: Method for manufacturing an solar cell device, characterized in that the method comprises among others the following steps: arranging solar cell units (1) and electrically insulating units (2) alternatingly next to each other; applying rear soldering ribbons (3) to the rear side of the solar cell units (1) and the electrically insulating units (2); applying front soldering ribbons (4) to the front side of the solar cell units (1) and the electrically insulating units (2); soldering the rear soldering ribbons (3) and the front soldering ribbons (4) to the solar cell units (1), thereby providing an assembled solar cell. The invention also comprises a solar cell manufactured by means of the method.Type: ApplicationFiled: October 15, 2008Publication date: January 13, 2011Applicant: Renewable Energy Corporation ASAInventors: Erik Sauar, Eckehard Hofmüller
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Publication number: 20100319767Abstract: The present invention relates to a solar cell which includes a silicon layer (1), and a method for providing a contact on the back surface of such a solar cell. The method comprises the following steps: a) adding a passivation layer (2) over the back surface of the silicon layer (1); b) adding a plating seed layer (4) over the passivation layer (2); c) separating the plating seed layer (4) by a first area (A) into first and second electrode areas; d) opening a second area (B) of the plating seed layer (4); e) opening the second area (B) of the passivation layer (2); f) applying a contact plating (3) to the opening of the second area (B) of the passivation layer (2) as well as to the plating seed layer (4) surrounding the second area (B).Type: ApplicationFiled: July 25, 2008Publication date: December 23, 2010Applicant: RENEWABLE ENERGY CORPORATION ASAInventor: Erik Sauar
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Publication number: 20100307926Abstract: Method and device for supplying electrical power to a wafer that is at least partially submerged in a liquid. The device comprises: —a container filled with the liquid; —a transportation device comprising a wafer carrier device for transporting the wafer at least partially submerged through the liquid; —a power supply device for supplying electrical power to the wafer.Type: ApplicationFiled: October 9, 2008Publication date: December 9, 2010Applicant: Renewable Energy Corporation ASAInventors: Erik Sauar, Robertus Antonius Steeman, Karl Ivar Lundahl
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Publication number: 20100200046Abstract: The present invention relates to photovoltaic modules with a plurality of separated photovoltaic elements (3). There is provided a product which utilizes the incident light in the areas in between the elements and a method for production thereof. The area in between the elements is covered by a liquid polymer (2) which is formed into V-grooves and cured and may be covered by a reflective layer.Type: ApplicationFiled: May 23, 2008Publication date: August 12, 2010Applicant: Renewable Energy Corporation ASAInventors: Erik Sauar, Eckehard Hofmüller
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Publication number: 20100108123Abstract: A solar cell module comprises a light receiving structure with a substantially transparent front cover and a plurality of active elements placed behind the said front cover. At least one interconnector is situated between adjacent active elements, the interconnectors having a reflective structure facing towards said front cover.Type: ApplicationFiled: January 30, 2008Publication date: May 6, 2010Applicant: Renewable Energy Corporation ASAInventors: Ingemar Åsberg, Erik Sauar, Eckehard Hofmüller
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Publication number: 20100032011Abstract: This invention relates to a cost effective method of producing a back contacted silicon solar cell and the cell made by the method, where the method comprises applying a silicon substrate, wafer or thin film, doped on the back side with alternating P-type and N-type conductivity in an interdigitated pattern and optionally a layer of either P- or N-type on the front side of the wafer, depositing one or more surface passivation layers on both sides of the substrate, creating openings in the surface passivation layers on the back side of the substrate, depositing a metallic layer covering the entire back side and which fills the openings in the surface passivation layers, and creating openings in the deposited metallic layer such that electric insulated contacts with the doped regions on the back side of the substrate is obtained.Type: ApplicationFiled: September 27, 2007Publication date: February 11, 2010Inventor: Erik SAUAR
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Publication number: 20090314338Abstract: This invention relates to a method for producing thin film solar cells with a back-side reflective layer, wherein the solar module is a silicon thin film device placed in-between a back side planar substrate and a front side planar glass superstrate placed in parallel and a distance from the back side planar substrate, wherein the silicon thin film device comprises in successive order from the front side: a front side transparent conductive (TCO) layer, a multi junction thin-film solar conversion layer comprising amorphous and microcrystalline silicon or alloys thereof, a back side TCO-layer, a diffuse reflective layer with one or more local through-going apertures, and a metal layer covering the reflective layer and which is in contact with the back side TCO-layer through the one or more apertures in the reflective layer. The invention also relates to a method for forming the solar cell.Type: ApplicationFiled: June 18, 2009Publication date: December 24, 2009Applicant: Renewable Energy Corporation ASAInventors: Paul Alan BASORE, Andreas BENTZEN, Erik SAUAR
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Publication number: 20090283141Abstract: This invention relates to a method for contacting solar wafers containing one or more layers of temperature sensitive passivation layers by first creating local openings in the passivation layer(s) and then fill the openings with an electric conducting material. In this way, it becomes possible to avoid the relatively high temperatures needed in the conventional method for contacting solar wafers containing one or more passivation layer(s), and thus maintain the excellent passivation properties of newly developed temperature sensitive passivation layer(s) during and after the contacting.Type: ApplicationFiled: April 12, 2007Publication date: November 19, 2009Applicant: Renewable Energy Corporation ASAInventors: Andreas Bentzen, Erik Sauar