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公开(公告)号：US20190013423A1
公开(公告)日：2019-01-10
申请号：US15749123
申请日：2016-11-15
发明人： Ryo MITTA , Takenori WATABE , Hiroyuki OHTSUKA
IPC分类号： H01L31/0224 , H01L31/05 , H01L31/18 , H01L31/068 , H01L31/0216
摘要： To Provide a back contact type solar cell with high photovoltaic-conversion efficiency which can be easily manufactured with good yield at low cost. The high photovoltaic-conversion efficiency solar cell of the present invention includes on a back surface, as a non-light receiving surface, of a first conductive type semiconductor substrate: a first conductive type diffusion layer where first conductive type impurities are diffused; a second conductive type diffusion layer where second conductive type impurities are diffused; and a high resistive layer or an intrinsic semiconductor layer formed between the first conductive type diffusion layer and the second conductive type diffusion layer.
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公开(公告)号：US20200274009A1
公开(公告)日：2020-08-27
申请号：US16872589
申请日：2020-05-12
IPC分类号： H01L31/0224 , H01L31/0236 , H01L31/068
摘要： A method for manufacturing a solar cell, including the steps of: forming unevenness on both of main surfaces of a semiconductor substrate of a first conductivity type; forming a base layer on a first main surface of the semiconductor substrate; forming a diffusion mask on the base layer; removing the diffusion mask in a pattern; forming an emitter layer on the portion of the first main surface where the diffusion mask have been removed; removing the remaining diffusion mask; forming a dielectric film on the first main surface; forming a base electrode on the base layer; and forming an emitter electrode on the emitter layer.
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公开(公告)号：US20200185547A1
公开(公告)日：2020-06-11
申请号：US16308294
申请日：2017-04-04
发明人： Ryo MITTA , Takenori WATABE , Hiroyuki OHTSUKA
IPC分类号： H01L31/0224 , H01B1/16 , H01B1/22 , H01B1/02 , H01L31/0216 , H01L31/068 , H01L31/18
摘要： An object of the present invention is to provide, at a low cost, a solar cell having high conversion efficiency. A solar cell according to the present invention is characterized by including a passivation film that protects a semiconductor substrate, a first finger electrode connected to the semiconductor substrate on a main surface of the semiconductor substrate, a first bus bar electrode that intersects the first finger electrode, and an intermediate layer provided in an intersecting position of the first finger electrode and the first bus bar electrode. The solar cell is characterized in that the first finger electrode and the first bus bar electrode are electrically connected to each other via the intermediate layer.
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公开(公告)号：US20230278907A1
公开(公告)日：2023-09-07
申请号：US18316243
申请日：2023-05-12
发明人： Ryo MITTA
IPC分类号： C03B37/012 , C03B37/014
CPC分类号： C03B37/01211 , C03B37/01251 , C03B37/01446 , Y10T428/2949 , C03B2201/12 , C03B2201/31 , C03C13/045
摘要： Provided is an optical fiber glass preform in which a starting rod and a dummy glass are hardly separated from each other, and a method for manufacturing the glass preform. In the optical fiber glass preform, the dummy glass is fitted into one end of the starting rod, and a part of the dummy glass and the starting rod are surrounded by a clad glass. In the manufacturing method, at the time of connecting the starting rod and the dummy glass, a shape is adjusted in such a manner that an iron is brought into contact with a connection portion and is moved from a starting rod side toward a dummy glass side with appliance of a load.
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公开(公告)号：US20230020384A1
公开(公告)日：2023-01-19
申请号：US17848367
申请日：2022-06-23
发明人： Ryo MITTA
IPC分类号： C03B37/012 , C03B37/014
摘要： Provided is an optical fiber glass preform in which a starting rod and a dummy glass are hardly separated from each other, and a method for manufacturing the glass preform. In the optical fiber glass preform, the dummy glass is fitted into one end of the starting rod, and a part of the dummy glass and the starting rod are surrounded by a clad glass. In the manufacturing method, at the time of connecting the starting rod and the dummy glass, a shape is adjusted in such a manner that an iron is brought into contact with a connection portion and is moved from a starting rod side toward a dummy glass side with appliance of a load.
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公开(公告)号：US20220352396A1
公开(公告)日：2022-11-03
申请号：US17864886
申请日：2022-07-14
发明人： Ryo MITTA , Takenori WATABE , Hiroyuki OHTSUKA
IPC分类号： H01L31/0224 , H01B1/02 , H01B1/16 , H01B1/22 , H01L31/0216 , H01L31/068 , H01L31/18
摘要： An object of the present invention is to provide, at a low cost, a system and a method for manufacturing a solar cell having high conversion efficiency. A solar cell according to the present invention is characterized by including a passivation film that protects a semiconductor substrate, a first finger electrode connected to the semiconductor substrate on a main surface of the semiconductor substrate, a first bus bar electrode that intersects the first finger electrode, and an intermediate layer provided in an intersecting position of the first finger electrode and the first bus bar electrode . The solar cell is characterized in that the first finger electrode and the first bus bar electrode are electrically connected to each other via the intermediate layer.
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7.发明申请公开(公告)号：US20190221700A1
公开(公告)日：2019-07-18
申请号：US15575339
申请日：2016-12-13
IPC分类号： H01L31/068 , H01L31/0224 , H01L31/0236 , H01L31/18 , H01L31/05
CPC分类号： H01L31/0682 , H01L31/022458 , H01L31/02366 , H01L31/0516 , H01L31/068 , H01L31/18 , H01L31/1804 , Y02E10/547 , Y02P70/521
摘要： In a back contact type solar cell in which an impurity diffusion layer where second conductive type impurities are diffused is formed on a back surface, as a non-light receiving surface, of a first conductive type semiconductor substrate, and an electrode in contact with the impurity diffusion layer is provided, a surface concentration of the impurities in the impurity diffusion layer is not less than 5×1017 atms/cm3 and not more than 5×1019 atms/cm3, and a diffusion depth of the impurities in the impurity diffusion layer is not smaller than 1 μm and not larger than 2.9 μm from a top of the back surface. It is thereby possible to provide a high efficiency back contact type solar cell which can be manufactured by a simple method at low cost.
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公开(公告)号：US20220055939A1
公开(公告)日：2022-02-24
申请号：US17403807
申请日：2021-08-16
发明人： Ryo MITTA
IPC分类号： C03B37/012
摘要： Provided is an optical fiber glass preform, in a preliminary step of a final drawing step, in which the optical fiber glass preform is undergone one or more drawing steps to be drawn to a final target diameter, wherein as an outer diameter of an effective portion of the glass preform is continuously measured in a longitudinal direction, and from outer diameter measurement results obtained, a regression line of y=ax+b is obtained using the least squares method with y as the outer diameter and x as a length, an absolute value of a slope a is less than or equal to 0.005 mm/mm; and a maximum value of an obtained absolute value of a curvature of the outer diameter at any given point, in the outer diameter measurement results obtained, is 0.003 or less.
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公开(公告)号：US20210061701A1
公开(公告)日：2021-03-04
申请号：US17009793
申请日：2020-09-02
发明人： Ryo MITTA
IPC分类号： C03B37/014
摘要： Provided is a glass particulate deposit manufacturing method for manufacturing a glass particulate deposit comprising mounting a fixing jig on an outer periphery of an outermost pipe of a burner; inserting a burner cover from a tip end of the outermost pipe of the burner; and sandwiching and compressing a part of the fixing jig between the burner cover and the outermost pipe of the burner to fix the burner cover to the burner, wherein an outer diameter of a part of the fixing jig that is not compressed is greater than an inner diameter of a part of the burner cover inserted to the tip end of the outermost pipe of the burner.
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公开(公告)号：US20190157478A1
公开(公告)日：2019-05-23
申请号：US15753630
申请日：2016-10-25
IPC分类号： H01L31/0224 , H01L31/0236 , H01L31/068
摘要： A method for manufacturing a solar cell, including the steps of: forming unevenness on both of main surfaces of a semiconductor substrate of a first conductivity type; forming a base layer on a first main surface of the semiconductor substrate; forming a diffusion mask on the base layer; removing the diffusion mask in a pattern; forming an emitter layer on the portion of the first main surface where the diffusion mask have been removed; removing the remaining diffusion mask; forming a dielectric film on the first main surface; forming a base electrode on the base layer; and forming an emitter electrode on the emitter layer. This provides a method for manufacturing a solar cell that can bring high photoelectric conversion efficiency while decreasing the number of steps.
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