Patents Assigned to Shell Solar GmbH
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Patent number: 7217883Abstract: A solar cell involving a silicon wafer having a basic doping, a light-receiving front side and a backside, which is provided with an interdigital semiconductor pattern, which interdigital semiconductor pattern has a first pattern of at least one first diffusion zone having a first doping and a second pattern of at least one second diffusion zone, separated from the first diffusion zone(s) and having a second doping that differs from the first doping, wherein each second diffusion zone is arranged along the sides of at least one groove extending from the backside into the silicon wafer.Type: GrantFiled: November 26, 2002Date of Patent: May 15, 2007Assignee: Shell Solar GmbHInventor: Adolf Münzer
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Patent number: 7129109Abstract: The invention relates to a method for structuring an oxide layer applied to a substrate material. The aim of he invention is to provide an inexpensive method for structuring such an oxide layer. To this end, a squeegee paste that contains an oxide-etching component is printed on the oxide layer through a pattern stencil after silk screen printing and the printed squeegee paste is removed after a determined dwelling time.Type: GrantFiled: February 1, 2002Date of Patent: October 31, 2006Assignee: Shell Solar GmbHInventors: Adolf Münzer, Reinhold Schlosser
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Patent number: 6884968Abstract: A process for annealing large-area multilayer bodies by supplying a quantity of energy at an annealing rate of at least 1° C./s. To suppress temperature inhomogeneities during the annealing, different partial quantities of the quantity of energy are supplied to the layers of the multilayer body with a local and temporal resolution. The multilayer body is annealed in a container which has a base and a cover made from glass-ceramic. The process is used to produce a thin-film solar module.Type: GrantFiled: October 27, 2003Date of Patent: April 26, 2005Assignee: Shell Solar GmbHInventor: Volker Probst
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Patent number: 6787485Abstract: An appliance for the simultaneous tempering and processing of a plurality of process items with the aid of electromagnetic radiation. The appliance is a stack oven, the process items and the energy sources being arranged on one another in such a way that a process item is present between two energy sources and an energy source is present between two process items. The appliance is particularly suitable for tempering the process items in the presence of a process gas. Using the appliance, a variable heating and cooling profile with variable process parameters is possible. In particular, reliable tempering of a process item in the form of a large-area multilayer body with layers of different physical properties is possible.Type: GrantFiled: April 22, 2002Date of Patent: September 7, 2004Assignee: Shell Solar GmbHInventor: Volker Probst
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Publication number: 20040087172Abstract: A process for annealing large-area multilayer bodies by supplying a quantity of energy at an annealing rate of at least 1° C./s. To suppress temperature inhomogeneities during the annealing, different partial quantities of the quantity of energy are supplied to the layers of the multilayer body with a local and temporal resolution. The multilayer body is annealed in a container which has a base and a cover made from glass-ceramic. The process is used to produce a thin-film solar module.Type: ApplicationFiled: October 27, 2003Publication date: May 6, 2004Applicant: SHELL SOLAR GMBHInventor: Volker Probst
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Patent number: 6717112Abstract: A process for annealing large-area multilayer bodies by supplying a quantity of energy at an annealing rate of at least 1° C./s. To suppress temperature inhomogeneities during the annealing, different partial quantities of the quantity of energy are supplied to the layers of the multilayer body with a local and temporal resolution. The multilayer body is annealed in a container which has a base and a cover made from glass-ceramic. The process is used to produce a thin-film solar module.Type: GrantFiled: May 9, 2002Date of Patent: April 6, 2004Assignee: Shell Solar GmbHInventor: Volker Probst
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Patent number: 6703589Abstract: A method and for heat-treating at least one material being processed (3) under a specific process-gas atmosphere (111) of at least one process gas (4) with the aid of a heat-treatment unit (6). The heat-treatment unit has at least one energy source (5) for making the material being processed (3) take up an amount of energy, a heat-treatment container (11) with a heat-treatment space (16) for keeping the material being processed (3) under the process-gas atmosphere (111) during the heat treatment, a heat-treatment chamber (13), in which the heat-treatment container (11) is arranged at a distance (18) from the heat-treatment chamber (13), so that there is an intermediate space (14) between the heat-treatment container (11) and the heat-treatment chamber (13), and an element (19, 191) for producing in the intermediate space (14) a further gas atmosphere (141) of a further gas, different from the process-gas atmosphere (111).Type: GrantFiled: April 22, 2002Date of Patent: March 9, 2004Assignee: Shell Solar GmbHInventor: Volker Probst
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Patent number: 6650031Abstract: The invention relates to a system for protecting a solar module against theft or unauthorized use by an authorized consumer. Said system comprises an interruption device on the solar module side and a release device on the consumer side. The interruption device transmits a first signal to the release device via a power line and interrupts the transfer, via a power line, of energy generated by the solar module to the consumer if the interruption device does not receive, via said power line, a second signal from the release device within a specified first period. This permits the secure and economical protection of the solar module, since a solar module protected in the manner described above is of no value without the second signal.Type: GrantFiled: July 5, 2001Date of Patent: November 18, 2003Assignee: Siemens and Shell Solar GmbHInventor: Daniel Goldack
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Patent number: 6576866Abstract: The invention relates to a method for structuring transparent, conductive layers, especially for structuring transparent electrode layers in thin-layer components. The selected wavelength (&lgr;) of the laser used for structuring should fall substantially within the plasma absorption range of the transparent electrode layer and should fulfill following three requirements: a) the wavelength &lgr; of the laser must be greater than the cut-off wavelength &lgr;gopt for optical absorption in the base absorber, b) the wavelength &lgr; of the laser must be greater than the cut-off wavelength for free substrate absorption (plasma absorption) &lgr;gpla in the transparent electrode layer, and c) the wavelength &lgr; of the laser must be less than the cut-off wavelength for metallic reflection &lgr;gmet on the transparent front electrode.Type: GrantFiled: June 28, 2001Date of Patent: June 10, 2003Assignee: Siemens and Shell Solar GmbHInventor: Franz Karg
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Patent number: 6566628Abstract: A method and device for thin-film ablation of a substrate of a workpiece, more particularly, for surface layer ablation of a thin-film solar cell. The device comprises a laser resonator for generating a light pulse machining beam having pulse durations smaller than 100 ns and a pulse energy density between 0.1 and 10 J/cm2, and a controllable positioner for positioning the workpiece relative to the machining beam such that an amount of energy impinging the surface to be machined is substantially constant for each unit of surface area. The device further includes an optical system arranged in a path of the machining beam, including an optical fiber cable and an optical imaging member for imaging an output of the optical fiber cable on a surface of the workpiece, the optical system being configured such that, in a plane of the surface to be machined, the power distribution is substantially homogenous.Type: GrantFiled: October 5, 2001Date of Patent: May 20, 2003Assignee: Siemens and Shell Solar GmbHInventors: Helmut Vogt, Franz Karg
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Patent number: 6486391Abstract: The invention relates to a diode structure, especially for thin film solar cells. The aim of the invention is to provide a diode structure for thin film solar cells. Said structure allows for an assembly of a thin film solar cell, whereby said assembly is as flexible as possible, efficiency is high, and utilizing materials that are as environmentally friendly as possible. A diode structure comprising a p-conducting layer, which consists of a chalcopyrite compound, and a n-conducting layer, which is adjacent to the p-conducting layer and consists of a compound that contains titanium and oxygen, is provided.Type: GrantFiled: July 25, 2001Date of Patent: November 26, 2002Assignee: Siemens and Shell Solar GmbHInventor: Franz Karg
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Patent number: 6448105Abstract: A method for doping one side of a semiconductor substrate, such as in a silicon wafer, wherein an oxide layer is deposited on both the side to be doped and the non-doped side of the semiconductor substrate. A doping layer, containing a doping agent, is deposited onto the oxide layer on the side to be doped. The doping agent passes through the oxide layer on the side to be doped and into the semiconductor substrate. The oxide layer on the non-doped side serves as a protective layer, preventing diffusion of the doping agent into the undoped side of the substrate.Type: GrantFiled: November 22, 2000Date of Patent: September 10, 2002Assignee: Siemens and Shell Solar GmbHInventor: Steffen Sterk