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    • 2. 发明专利
    • Método de fabricación de célula solar
    • ES2764073T3
    • 2020-06-02
    • ES06731542
    • 2006-04-11
    • SHINETSU HANDOTAI KKNAOETSU ELECTRONICS CO LTDSHINETSU CHEMICAL CO
    • OHTSUKA HIROYUKITAKAHASHI MASATOSHIISHIKAWA NAOKISAISU SHIGENORIUEGURI TOYOHIROOJIMA SATOYUKIWATABE TAKENORIAKATSUKA TAKESHIONISHI TSUTOMU
    • H01L31/0224H01L21/225H01L31/04H01L31/06H01L31/068H01L31/18
    • Un método de fabricación de una célula solar (100) formando una unión p-n en un sustrato semiconductor (1) que tiene un primer tipo de conductividad, en el que, al menos: un primer material de recubrimiento (8) que contiene un dopante del segundo tipo de conductividad y un agente para impedir que se disperse un dopante, incluyendo dicho agente un compuesto de silicio, está recubierto sobre el sustrato semiconductor que tiene el primer tipo de conductividad mediante serigrafía, y un segundo material de recubrimiento (9) que contiene un dopante del segundo tipo de conductividad está recubierto sobre el sustrato semiconductor que tiene el primer tipo de conductividad y el primer material de recubrimiento mediante recubrimiento por centrifugación, de modo que el segundo material de recubrimiento puede entrar en contacto con al menos el primer material de recubrimiento; y, una primera capa de difusión (2) formada recubriendo el primer material de recubrimiento, y una segunda capa de difusión (3) formada recubriendo el segundo material de recubrimiento, teniendo la segunda capa de difusión una conductividad inferior a la de la primera capa de difusión, se forman simultáneamente mediante un tratamiento térmico de difusión que da como resultado la formación de dicha unión p-n, en el que, además: el primer material de recubrimiento y el segundo material de recubrimiento difieren entre sí en cualquiera de al menos, el porcentaje de un contenido de dopante, una viscosidad, el contenido del agente para impedir que se disperse un dopante y un agente para impedir autodopaje, incluyendo dicho agente un compuesto de silicio, un tipo de dopante y/o grosores de película de recubrimiento del primer material de recubrimiento y el segundo material de recubrimiento durante el recubrimiento; y en el que el porcentaje del contenido de dopante del primer material de recubrimiento es 4 o más veces mayor que el porcentaje del contenido de dopante del segundo material de recubrimiento.
    • 5. 发明专利
    • NO20076104L
    • 2008-01-25
    • NO20076104
    • 2007-11-26
    • NAOETSU ELECTRONICS CO LTD
    • OHTSUKA HIROYUKITAKAHASHI MASATOSHIISHIKAWA NAOKISAISU SHINGENORIUEGURI TOYOHIROOJIMA SATOYUKIWATABE TAKENORIAKATSUKA TAKESHIONISHI TSUTOMU
    • H01L21/225H01L31/18
    • The present invention is a method for manufacturing a solar cell by forming a p-n junction in a semiconductor substrate having a first conductivity type, wherein, at least: a first coating material containing a dopant and an agent for preventing a dopant from scattering, and a second coating material containing a dopant, are coated on the semiconductor substrate having the first conductivity type so that the second coating material may be brought into contact with at least the first coating material; and, a first diffusion layer formed by coating the first coating material, and a second diffusion layer formed by coating the second coating material the second diffusion layer having a conductivity is lower than that of the first diffusion layer are simultaneously formed by a diffusion heat treatment; a solar cell manufactured by the method; and a method for manufacturing a semiconductor device. It is therefore possible to provide the method for manufacturing the solar cell, which can manufacture the solar cell whose photoelectric conversion efficiency is improved at low cost and with a simple and easy method by suppressing surface recombination in a portion other than an electrode of a light-receiving surface and recombination within an emitter while obtaining ohmic contact; the solar cell manufactured by the method; and the method for manufacturing the semiconductor device.
    • 8. 发明专利
    • Solar cell element and method for fabricating the same
    • 太阳能电池元件及其制造方法
    • JP2008204967A
    • 2008-09-04
    • JP2005159509
    • 2005-05-31
    • Naoetsu Electronics Co LtdShin Etsu Chem Co Ltd信越化学工業株式会社直江津電子工業株式会社
    • ONISHI TSUTOMUAKATSUKA TAKESHIIGARASHI SHUNICHI
    • H01L31/04H01L21/28H01L29/40
    • H01L31/02167Y02E10/52
    • PROBLEM TO BE SOLVED: To provide a solar cell element that can realize BSF effect and passivation effect, using a simple structure. SOLUTION: Since the rear surface side of a semiconductor substrate 1 is covered entirely with a BSF layer 2, only a part of the BSF layer 2 on the rear-surface side is brought into contact with a first rear surface electrode 4; a larger part on the rear-surface side is covered with a passivation film 3, excepting these contact portions 4a; and surface recombination loss is reduced in the great part of the semiconductor substrate 1 on the rear-surface side and the performance of a solar cell is enhanced. Furthermore, when the rear-surface side of the passivation film is covered with a second rear-surface electrode 5 having a resistance lower than that of the first rear surface electrode 4 and the first rear-surface electrode 4 is brought into contact with the second rear-surface electrode 5; power loss due to resistance at the second rear-surface electrode 5, having a resistance lower than that of the first rear-surface electrode 4, is reduced; and moreover light of a long wavelength, arriving at the rear surface from the front surface, is reflected on the second rear surface electrode 5 toward the inside of the semiconductor substrate 1, thus power generation effect is improved. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供可以实现BSF效应和钝化效果的太阳能电池元件,使用简单的结构。 解决方案:由于半导体衬底1的后表面侧全部被BSF层2覆盖,所以后表面侧的仅BSF层2的一部分与第一后表面电极4接触; 除了这些接触部分4a之外,背面侧的较大部分被钝化膜3覆盖。 并且在背面侧的半导体衬底1的大部分中表面复合损失减小,并且太阳能电池的性能得到提高。 此外,当钝化膜的背面侧被具有比第一后表面电极4的电阻低的第二背面电极5覆盖,并且第一后表面电极4与第二背面电极5接触时 背面电极5; 具有比第一背面电极4的电阻低的第二背面电极5的电阻引起的功率损耗减少; 此外,从前表面到达后表面的长波长的光在第二背面电极5上朝向半导体基板1的内部反射,从而提高发电效果。 版权所有(C)2008,JPO&INPIT
    • 9. 发明专利
    • Method for forming diffusion layer on substrate
    • 在基底上形成扩散层的方法
    • JP2010027744A
    • 2010-02-04
    • JP2008185313
    • 2008-07-16
    • Naoetsu Electronics Co LtdShin-Etsu Chemical Co Ltd信越化学工業株式会社直江津電子工業株式会社
    • MURAKAMI TAKASHIAKATSUKA TAKESHITSUKIGATA SHINTAROISHIKAWA NAOKIOTSUKA HIROYUKI
    • H01L21/223H01L21/22
    • PROBLEM TO BE SOLVED: To provide a method for forming diffusion layers on substrates for suppressing the variations of sheet resistance values of the substrates where diffusion layers are formed, and of improving yield in solar cell production, even if the number of substrate sheets to be processed for thermal treatment at a time is increased for the purpose of improving productivity of solar cell. SOLUTION: This diffusion layer forming method includes a step to stand a plurality of semiconductor substrates 1 in a traverse boat 2, a step to arrange at least one traverse boat 1 inside a traverse heat treatment furnace 3, a step to form diffusion layers on the substrates by thermal diffusion of impurities, and a step to form PN junctions on the substrates. In this method, when the traverse boat is disposed inside the heat treatment furnace, it is arranged so that the height of a contact position between the substrate and the supporting lower edge surface may gradually make a leaning variation in a longitudinal direction. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种在基板上形成扩散层的方法,用于抑制形成扩散层的基板的薄层电阻值的变化,并且提高太阳能电池制造的成品率,即使基板数量 为了提高太阳能电池的生产率,增加了一次要进行热处理的片材。 解决方案:这种扩散层形成方法包括在横动舟皿2中放置多个半导体衬底1的步骤,在横向热处理炉3内布置至少一个横动舟1的步骤,形成扩散的步骤 通过杂质的热扩散在衬底上的层,以及在衬底上形成PN结的步骤。 在该方法中,当横动舟布置在热处理炉内部时,其布置使得基板和支撑下边缘表面之间的接触位置的高度可以在纵向方向上逐渐地倾斜变化。 版权所有(C)2010,JPO&INPIT