Patents by Inventor Hiroaki Itoh
Hiroaki Itoh 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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Patent number: 9941422Abstract: Provided are a transparent conductive film having a simple manufacturing process and high transparency, high photoelectric conversion efficiency, and excellent durability and an organic photoelectric conversion element using this transparent conductive film. The transparent conductive film of the present invention is formed by laminating a ground layer which contains a nitrogen-containing organic compound and a metal thin film layer which contains a metal element of Group 11 of the periodic table and has a thickness of from 2 to 10 nm.Type: GrantFiled: April 4, 2013Date of Patent: April 10, 2018Assignee: KONICA MINOLTA, INC.Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hiroshi Ishidai
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Patent number: 9882072Abstract: Provided is a solar cell including a pair of electrodes, and a photoelectric conversion layer of chalcopyrite structure sandwiched between the pair of electrodes. At least one of the pair of electrodes, adapted to serve as a transparent electrode, has a nitrogen-containing layer composed with the use of an organic compound containing a nitrogen atom, and an electrode layer containing a metal of the Group 11 of the periodic table, which is provided to be laminated on the nitrogen-containing layer, thereby improving the photoelectric conversion efficiency.Type: GrantFiled: September 4, 2013Date of Patent: January 30, 2018Assignee: KONICA MINOLTA, INC.Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hidekane Ozeki, Kazuhiro Yoshida, Takeshi Hakii
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Patent number: 9871216Abstract: To provide an organic photoelectric conversion element whereby conversion efficiency is increased by morphology improvement in a power generation layer, and whereby short circuit current (Jsc) attenuation when irradiating light is simultaneously suppressed, and an organic solar cell using the same. An organic photoelectric conversion element having: a transparent first electrode; a power generation layer having a p-type organic semiconductor material and an n-type organic semiconductor material; and a second electrode, on a transparent substrate, in which the power generation layer is a bulk heterojunction power generation layer including the p-type organic semiconductor material and the n-type organic semiconductor material, and additionally includes a compound represented by either the following general formula (I) or general formula (II).Type: GrantFiled: August 6, 2012Date of Patent: January 16, 2018Assignee: KONICA MINOLTA, INC.Inventor: Hiroaki Itoh
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Patent number: 9666818Abstract: A tandem-type organic photoelectric conversion element has at least a first electrode, a second electrode, and a plurality of bulk heterojunction layers each comprising a p-type organic semiconductor material and an n-type organic semiconductor material. The tandem-type organic photoelectric conversion element and a solar battery are characterized in that when the absorption wavelengths of the bulk heterojunction layers are such that a second bulk heterojunction layer absorbs up to a longer wavelength than a first bulk heterojunction layer, the LUMO energy level (LUMO(n1)) of the film of the n-type semiconductor in the first bulk heterojunction layer and the LUMO energy level (LUMO(n2)) of the film of the n-type semiconductor in the second bulk heterojunction layer satisfy the following equation (1): 0.4 eV?LUMO(n1)?LUMO(n2)?0.1 eV??(1).Type: GrantFiled: September 8, 2010Date of Patent: May 30, 2017Assignee: KONICA MINOLTA HOLDINGS, INC.Inventors: Yasushi Okubo, Noriko Yasukawa, Hiroaki Itoh, Takamune Hattori
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Publication number: 20150364720Abstract: Provided is a gas barrier film with excellent storage stability, in particular, storage stability under harsh conditions (high temperature and high moisture conditions). The present invention provides a gas barrier film including, in order, a substrate, a first barrier layer which contains an inorganic compound, and a second barrier layer which contains at least silicon atoms and oxygen atoms, which has an abundance ratio of oxygen atoms to silicon atoms (O/Si) of 1.4 to 2.2, and which has an abundance ratio of nitrogen atoms to silicon atoms (N/Si) of 0 to 0.4.Type: ApplicationFiled: January 31, 2014Publication date: December 17, 2015Inventor: Hiroaki ITOH
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Publication number: 20150287844Abstract: A solar battery module that can decrease the reduction in output is provided. The solar battery module (1) includes a solar battery panel (30) which includes: a solar battery cell (2) that includes an insulating passivation film (22) on a light reception surface; a translucent substrate (5) which is arranged on the side of the light reception surface of the solar battery cell; and a sealing member (4) which adheres the solar battery cell and the translucent substrate. A cell upper portion (4a) arranged on the light reception surface of the solar battery cell has an area resistivity of 1.36×1014 ?·cm2 or more.Type: ApplicationFiled: December 10, 2012Publication date: October 8, 2015Inventors: Yasushi Sainoh, Yoshihisa Dotta, Hiroyuki Ikawa, Masatomo Tanahashi, Shinji Nishioka, Kohei Sawada, Kentaro Usui, Tomoo Imataki, Hiroaki Itoh
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Publication number: 20150221793Abstract: Provided is a solar cell including a pair of electrodes, and a photoelectric conversion layer of chalcopyrite structure sandwiched between the pair of electrodes. At least one of the pair of electrodes, adapted to serve as a transparent electrode, has a nitrogen-containing layer composed with the use of an organic compound containing a nitrogen atom, and an electrode layer containing a metal of the Group 11 of the periodic table, which is provided to be laminated on the nitrogen-containing layer, thereby improving the photoelectric conversion efficiency.Type: ApplicationFiled: September 4, 2013Publication date: August 6, 2015Applicant: Konica Minolta, Inc.Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hidekane Ozeki, Kazuhiro Yoshida, Takeshi Hakii
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Publication number: 20150096610Abstract: Provided are a transparent conductive film having a simple manufacturing process and high transparency, high photoelectric conversion efficiency, and excellent durability and an organic photoelectric conversion element using this transparent conductive film. The transparent conductive film of the present invention is formed by laminating a ground layer which contains a nitrogen-containing organic compound and a metal thin film layer which contains a metal element of Group 11 of the periodic table and has a thickness of from 2 to 10 nm.Type: ApplicationFiled: April 4, 2013Publication date: April 9, 2015Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hiroshi Ishidai
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Patent number: 8967848Abstract: Provided is a lightweight flexible lighting device with excellent durability and stable performance over repeated use that combines an organic electroluminescent element, an organic photoelectric conversion element, and a secondary cell. The lighting device has a control means for controlling the electrical connections of the organic electroluminescent element, the organic photoelectric conversion element, and the secondary cell. The control means controls the electrical connections such that a reverse bias voltage is applied to the organic electroluminescent element when the organic electroluminescent element receives light, generates power, and charges the secondary cell, and such that a reverse bias voltage is applied to the organic photoelectric conversion element when the organic electroluminescent element is supplied with power from the secondary cell and emits light.Type: GrantFiled: November 16, 2009Date of Patent: March 3, 2015Assignee: Konica Minolta Holdings, Inc.Inventors: Yasushi Okubo, Takahiko Nojima, Hiroaki Itoh, Ayako Wachi
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Patent number: 8912435Abstract: Disclosed is an organic photoelectric conversion element which has excellent photoelectric conversion efficiency and excellent temperature stability with respect to power generation. The organic photoelectric conversion element comprises at least one photoelectric conversion layer and at least one carrier transport layer between a first electrode and a second electrode, and is characterized in that the carrier transport layer contains the salt of an alkali metal or an alkaline earth metal or the complex thereof of an alkali metal or an alkaline earth metal.Type: GrantFiled: December 1, 2010Date of Patent: December 16, 2014Assignee: Konica Minolta Holdings, Inc.Inventors: Ayako Wachi, Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh
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Publication number: 20140190566Abstract: To provide an organic photoelectric conversion element whereby conversion efficiency is increased by morphology improvement in a power generation layer, and whereby short circuit current (Jsc) attenuation when irradiating light is simultaneously suppressed, and an organic solar cell using the same. An organic photoelectric conversion element having: a transparent first electrode; a power generation layer having a p-type organic semiconductor material and an n-type organic semiconductor material; and a second electrode, on a transparent substrate, in which the power generation layer is a bulk heterojunction power generation layer including the p-type organic semiconductor material and the n-type organic semiconductor material, and additionally includes a compound represented by either the following general formula (I) or general formula (II).Type: ApplicationFiled: August 6, 2012Publication date: July 10, 2014Applicant: KONICA MINOLTA, INC.Inventor: Hiroaki Itoh
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Patent number: 8729387Abstract: Disclosed is an organic photoelectric conversion element having high photoelectric conversion efficiency and high durability. Also disclosed are a solar cell and an optical sensor array, each using the organic photoelectric conversion element. The organic photoelectric conversion element comprises a bulk heterojunction layer wherein an n-type semiconductor material and a p-type semiconductor material are mixed. The organic photoelectric conversion element is characterized in that the n-type semiconductor material is a polymer compound and the p-type semiconductor material is a low-molecular-weight compound.Type: GrantFiled: August 21, 2009Date of Patent: May 20, 2014Assignee: Konica Minolta Holdings, Inc.Inventors: Yasushi Okubo, Takahiko Nojima, Hiroaki Itoh, Ayako Wachi
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Patent number: 8664518Abstract: Provided is an organic photoelectric conversion element containing: a first electrode; a second electrode; and an organic photoelectric conversion layer sandwiched between the first electrode and the second electrode, wherein the first electrode comprises: a conductive fiber layer; and a transparent conductive layer containing a conductive polymer comprising a ? conjugated conductive polymer and a polyanion, and an aqueous binder, and at least a part of the transparent conductive layer containing the conductive polymer and the aqueous binder is cross-linked therein.Type: GrantFiled: December 7, 2010Date of Patent: March 4, 2014Assignee: Konica Minolta Holdngs, Inc.Inventors: Ayako Wachi, Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh
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Publication number: 20130298825Abstract: A cleaning method comprises first cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the cleaning-liquid discharge opening, and second cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the optical fiber passing hole of the second die.Type: ApplicationFiled: July 15, 2013Publication date: November 14, 2013Inventors: Kiyoshi ARIMA, Hiroaki Itoh, Tatsuya Taniguchi
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Patent number: 8546684Abstract: Provided is an organic photoelectric conversion element having a high photoelectric conversion ratio. Provided is also a method for manufacturing an organic photoelectric conversion element which can significantly reduce the manufacturing cost by forming a transparent electrode and an organic generation layer portion by coating a material. The organic photoelectric conversion element includes on a transparent substrate, a first electrode unit having a transparent conductive layer, an organic generation unit, and a second electrode unit which are successively arranged in this order when viewed from the transparent substrate. The transparent conductive layer constituting the first electrode unit contains conductive fiber and transparent conductive material.Type: GrantFiled: October 7, 2009Date of Patent: October 1, 2013Assignee: Konica Minolta Holdings, Inc.Inventors: Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh, Ayako Wachi
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Patent number: 8491725Abstract: A cleaning method comprises first cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the cleaning-liquid discharge opening, and second cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the optical fiber passing hole of the second die.Type: GrantFiled: September 29, 2010Date of Patent: July 23, 2013Assignee: Furukawa Electric Co., Ltd.Inventors: Kiyoshi Arima, Hiroaki Itoh, Tatsuya Taniguchi
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Publication number: 20120241003Abstract: Disclosed is an organic photoelectric conversion element which has excellent photoelectric conversion efficiency and excellent temperature stability with respect to power generation. The organic photoelectric conversion element comprises at least one photoelectric conversion layer and at least one carrier transport layer between a first electrode and a second electrode, and is characterized in that the carrier transport layer contains the salt of an alkali metal or an alkaline earth metal or the complex thereof of an alkali metal or an alkaline earth metal.Type: ApplicationFiled: December 1, 2010Publication date: September 27, 2012Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Ayako Wachi, Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh
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Publication number: 20120199186Abstract: A tandem-type organic photoelectric conversion element has at least a first electrode, a second electrode, and a plurality of bulk heterojunction layers each comprising a p-type organic semiconductor material and an n-type organic semiconductor material. The tandem-type organic photoelectric conversion element and a solar battery are characterized in that when the absorption wavelengths of the bulk heterojunction layers are such that a second bulk heterojunction layer absorbs up to a longer wavelength than a first bulk heterojunction layer, the LUMO energy level (LUMO(n1)) of the film of the n-type semiconductor in the first bulk heterojunction layer and the LUMO energy level (LUMO(n2)) of the film of the n-type semiconductor in the second bulk heterojunction layer satisfy the following equation (1): 0.4 eV?LUMO(n1)?LUMO(n2)?0.1 eV . . .Type: ApplicationFiled: September 8, 2010Publication date: August 9, 2012Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Yasushi Okubo, Noriko Yasukawa, Hiroaki Itoh, Takamune Hattori
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Publication number: 20110233566Abstract: Provided is a lightweight flexible lighting device with excellent durability and stable performance over repeated use that combines an organic electroluminescent element, an organic photoelectric conversion element, and a secondary cell. The lighting device has a control means for controlling the electrical connections of the organic electroluminescent element, the organic photoelectric conversion element, and the secondary cell. The control means controls the electrical connections such that a reverse bias voltage is applied to the organic electroluminescent element when the organic electroluminescent element receives light, generates power, and charges the secondary cell, and such that a reverse bias voltage is applied to the organic photoelectric conversion element when the organic electroluminescent element is supplied with power from the secondary cell and emits light.Type: ApplicationFiled: November 16, 2009Publication date: September 29, 2011Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Yasushi Okubo, Takahiko Nojima, Hiroaki Itoh, Ayako Wachi
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Publication number: 20110197966Abstract: Provided is an organic photoelectric conversion element having a high photoelectric conversion ratio. Provided is also a method for manufacturing an organic photoelectric conversion element which can significantly reduce the manufacturing cost by forming a transparent electrode and an organic generation layer portion by coating a material. The organic photoelectric conversion element includes on a transparent substrate, a first electrode unit having a transparent conductive layer, an organic generation unit, and a second electrode unit which are successively arranged in this order when viewed from the transparent substrate. The transparent conductive layer constituting the first electrode unit contains conductive fiber and transparent conductive material.Type: ApplicationFiled: October 7, 2009Publication date: August 18, 2011Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh, Ayako Wachi