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    • 8. 发明申请
    • METHOD FOR PRODUCING A EWT SOLAR CELL
    • 一种用于生产EWT太阳能电池
    • WO2010149294A3
    • 2012-01-26
    • PCT/EP2010003583
    • 2010-06-15
    • FRAUNHOFER GES FORSCHUNGMINGIRULLI NICOLABIRO DANIELPREU RALF
    • MINGIRULLI NICOLABIRO DANIELPREU RALF
    • H01L31/0224H01L21/223H01L21/225H01L31/0216H01L31/068H01L31/18
    • H01L31/068H01L21/223H01L21/2255H01L31/022458H01L31/1804Y02E10/547Y02P70/521
    • The invention relates to a method for producing an EWT solar cell from a semiconductor substrate (1) of a first doping type, having a front and rear face and a plurality of recesses, each extending from the front to the rear face of the semiconductor substrate, comprising the following process steps: A) producing at least the follow emitter regions of a second doping type opposing the first doping type in the semiconductor substrate (1): a front face emitter, a rear face emitter, and a plurality of connecting emitters, each of which at least partially covers the wall of a recess, wherein the emitter regions each form a pn junction to the semiconductor substrate (1); B) applying at least one base contact structure and at least one emitter contact structure to the rear face of the semiconductor substrate. The invention is characterized in that a front face coating structure is applied to the front face of the semiconductor substrate prior to process step A, wherein the front face coating structure comprises at least one diffusion barrier coating and/or at least one front face doping coating containing the doping material of the second doping type, and in that a diffusion is performed in process step A by means of at least one doping material of the second doping type from the gas phase in order to produce at least the rear face emitter and the plurality of connecting emitters, wherein said diffusion is performed from the gas phase, and the front face emitter is produced in situ in a diffusion furnace.
    • 本发明涉及一种方法,用于制造EWT - 制成的第一掺杂类型与前和后侧和多个凹部,从前面到半导体衬底的背面上延伸的半导体衬底(1)的太阳能电池中,下面的方法步骤,其包括 :生成至少一个第二的下面发射极区域,相反的在半导体衬底中的第一掺杂类型的掺杂类型(1):前体,后侧发射器和多个连接发射极,其分别覆盖的凹部的壁至少部分地,每个所述发射极区具有pn结 在所述半导体衬底(1)上,将至少一种乙Basiskontaktierungsstruktur和至少一个Emitterkontaktierungsstruktur每种情况下在半导体衬底的背面。 重要的是,一个前层结构的方法步骤A之前施加到半导体衬底的前侧包含至少一个扩散阻挡层和/或至少一种含第二掺杂类型Vorderseitendotierschicht和在于,所述掺杂剂在方法步骤A中,至少一个在所述第二掺杂类型的掺杂剂的扩散装置 执行至少所述发射极和所述多个连接的后侧的气相以产生发射器,所述从气相和原位前侧发射器的生成扩散是在扩散炉中进行。
    • 9. 发明申请
    • PHOTOVOLTAIC SOLAR CELL AND METHOD FOR PRODUCING A PHOTOVOLTAIC SOLAR CELL
    • 光伏太阳能电池及生产光伏太阳能电池的方法
    • WO2012007143A2
    • 2012-01-19
    • PCT/EP2011003451
    • 2011-07-11
    • FRAUNHOFER GES FORSCHUNGTHAIDIGSMANN BENJAMINCLEMENT FLORIANBIRO DANIELWOLF ANDREASPREU RALF
    • THAIDIGSMANN BENJAMINCLEMENT FLORIANBIRO DANIELWOLF ANDREASPREU RALF
    • H01L31/0224
    • H01L31/02245H01L31/022425H01L31/022458H01L31/068H01L31/0682H01L31/18H01L31/1804Y02E10/547Y02P70/521
    • The invention relates to a method for producing a photovoltaic solar cell having a front side designed for coupling in light, comprising the following method steps: A Producing a plurality of cutouts in a semiconductor substrate of a base doping type, B Producing one or more emitter regions of an emitter doping type at least at the front side of the semiconductor substrate, wherein the emitter doping type is opposite to the base doping type, C Applying an electrically insulating insulation layer and D Producing metallic feed through structures in the cutouts, at least one metallic base contact structure at the rear side of the solar cell, which is formed in an electrically conductive manner with the semiconductor substrate in a base doping region, at least one metallic front-side contact structure at the front side of the solar cell, which is formed in an electrically conductive manner with the emitter region at the front side of the semiconductor substrate, and at least one rear-side contact structure at the rear side of the solar cell, which is formed in a manner electrically conductively connected to the feed through contact structure. The invention is characterized in that in method step B and/or a further method step in addition a feed through emitter region of the emitter doping type extending from the front side to the rear side is formed in each case in the semiconductor substrate on the walls of the cutouts, in that in method step C the insulation layer is applied in a manner covering the rear side of the semiconductor substrate, if appropriate further intervening intermediate layers, in that in method step D the rear-side contact structure is applied to the insulation layer, if appropriate to further intermediate layers, in such a way that the rear-side contact structure extends to regions of the semiconductor substrate having base doping and, in these regions, on account of the intervening insulation layer, an electrical insulation is formed between rear-side contact structure and semiconductor substrate, and the base contact structure is applied to the insulation layer, if appropriate to further intermediate layers, in such a way that the base contact structure penetrates through the insulation layer at least in regions, such that an electrically conductive connection is produced between base contact structure and semiconductor substrate. The invention furthermore relates to a photovoltaic solar cell.
    • 本发明涉及一种用于制造具有,其步骤包括形成用于将光耦合前方开口的光伏太阳能电池:在碱性掺杂类型的半导体衬底中的产生的多个凹部,B至少在半导体衬底的前侧产生的发射极掺杂类型的一个或多个发射区,其特征在于,所述 发射极掺杂类型相反的基本掺杂型,C施加电绝缘的绝缘层和d在太阳能电池,其被设计成可导电地连接到一个Basisdotierbereich所述半导体基板的背面产生在至少一个金属基极接触结构的凹部的金属传导的结构,至少一个金属的 在太阳能电池的前其被导电地在Halbleitersubs的前面连接到所述发射极区域前侧接触结构 trates形成,并且在其上形成电连接到通过线接触结构的太阳能电池的背面的至少一个背接触结构。 本发明的特征在于,在方法步骤B和/或进一步的方法步骤被附加地形成在每种情况下一个来自前面延伸至后部通道发射极的发射极掺杂类型的区域中的凹部的侧壁上的半导体基板,在方法步骤C的绝缘层,的背面 半导体衬底,任选另外的中间夹层,是覆盖施加为使得背面接触结构被施加到绝缘层,如果合适的话其他中间层,在方法步骤d被施加,以使背侧接触结构延伸的半导体衬底的区域与基极掺杂并且因为中间绝缘层的在这些区域的电 如果背面接触结构和半导体衬底之间形成绝缘层,并且绝缘层上的基极接触结构形成 承滴盘是,施加到多个中间层,使得绝缘层的基极接触结构至少部分地渗透,从而产生基极接触结构和半导体衬底之间的导电连接。 本发明还涉及一种光伏太阳能电池。
    • 10. 发明申请
    • SOLAR CELL AND SOLAR CELL MODULE WITH ONE-SIDED CONNECTIONS
    • 太阳能电池和太阳能电池模块的一面接线
    • WO2010022911A3
    • 2011-02-17
    • PCT/EP2009006138
    • 2009-08-25
    • FRAUNHOFER GES FORSCHUNGBIRO DANIELMINGIRULLI NICOLACLEMENT FLORIANPREU RALFWOEHL ROBERT
    • BIRO DANIELMINGIRULLI NICOLACLEMENT FLORIANPREU RALFWOEHL ROBERT
    • H01L31/0224H01L31/042
    • H01L31/0516H01L31/022441Y02E10/50
    • The invention relates to a solar cell, in particular for connecting to a solar cell module, comprising at least one metallic base contact, at least one metallic emitter contact (5) and a semi-conductor structure having at least one base area and at least one emitter area (3). The base area and emitter area (2,3) are at least partially adjacent to each other forming a pn-junction, the base contact (6) being connected in an electrically conductive manner to the base area (2), the emitter contact (5) being connected in an electrically conductive manner to the emitter area (3) and the solar cells being arranged on the contact side (1) as a base and emitter contact (6,5). Essentially, the solar cell comprises several metallic emitter contacts which are connected in an electrically conductive manner to the emitter area (3) and several metallic base contacts which are connected in an electrically conductive manner to the base area (2). The emitter contacts (5) do not have an electrically conductive connection under each other on the side facing away from the emitter area (3) and the base contacts do not have an electrically conductive connection on the side facing away from the base area (2). The invention also relates to a solar cell module comprising at least two claimed solar cells.
    • 本发明涉及一种太阳能电池,尤其是用于太阳能电池组件中,其包括至少一个金属基极接触的互连,至少一个金属发射极接触(5)和包含至少一种碱和至少一个发射极区域的半导体结构(3),所述基极和发射极区(2 ,3)至少部分地彼此相邻,以形成pn结,基极接触(6)是导电的(与基区2)和发射极(5)接触导电连接到所述发射极区域(3)和基本的和 发射极触点(6.5)在所述太阳能电池的接触侧(1)被布置。 至关重要的是,所述太阳能电池包括多个金属发射极接触,其导电地连接到发射极区域(3)和多个金属基极触点,每个导电连接到基极区(2)连接,发射极触点(5)彼此上 发射极区域(3)的背离不具有导电的连接侧,并且在所述基区的基极触点(2)由不具有导电的连接背向侧。 本发明进一步涉及包含根据本发明的至少两个太阳能电池的太阳能电池模块。