Rear contact solar cell and method for making same
    6.
    发明申请
    Rear contact solar cell and method for making same 审中-公开
    后接触太阳能电池及其制造方法

    公开(公告)号:US20090211628A1

    公开(公告)日:2009-08-27

    申请号:US11918271

    申请日:2006-04-11

    IPC分类号: H01L31/0224 H01L21/28

    摘要: The invention concerns a solar cell (1) and a method for making same, said solar cell (1) comprising on its rear surface (3) both the emission contact (43) and the base contact (45), those two contacts (43, 45) being electrically isolated from each other by flanks (5) whereof the metal coating has been removed. The emitting zones (4) of the rear surface (3) of the cell are connected by channels to the transmitter (9) of the front face (8) of the cell. The emitting zones (4) of the rear surface (3) of the cell and the channels (7) consist of a laser. The metal coating of the side walls is removed by selective etching, said metal coating being removed only in the zone of the flanks (5) where the etching barrier layer (11) is insufficient.

    摘要翻译: 本发明涉及一种太阳能电池(1)及其制造方法,所述太阳能电池(1)在其后表面(3)上包括发射触点(43)和基底触点(45),这两个触点(43 ,45)通过已经去除了金属涂层的侧面(5)彼此电隔离。 电池的后表面(3)的发射区(4)通过通道连接到电池的正面(8)的发射器(9)。 电池的后表面(3)的发射区(4)和通道(7)由激光器组成。 通过选择性蚀刻去除侧壁的金属涂层,所述金属涂层仅在蚀刻阻挡层(11)不足的侧面(5)的区域中被去除。

    Method for chemically treating a substrate
    7.
    发明授权
    Method for chemically treating a substrate 失效
    化学处理基材的方法

    公开(公告)号:US08563440B2

    公开(公告)日:2013-10-22

    申请号:US13059560

    申请日:2009-09-29

    IPC分类号: H01L21/302

    摘要: A method for chemically treating a disc-shaped substrate having a bottom surface, a top surface and side surfaces by contacting a process medium that is fluid-chemically active with at least the bottom surface of the substrate. The substrate is moved relative to the process medium while forming a triple line between the substrate, the substrate medium and the atmosphere surrounding the substrate and medium. In order to chemically remove errors, particularly in the side surfaces, relative motion should be carried out while avoiding a contacting of the process medium with the top surface of the substrate, where the triple line is formed at a desired height of the side surface facing away from the process medium flow side in relation to the relative motion between the substrate and the process medium.

    摘要翻译: 一种用于通过使具有流体化学活性的处理介质与至少底物的底表面接触来化学处理具有底表面,顶表面和侧表面的盘形基底的方法。 衬底相对于处理介质移动,同时在衬底,衬底介质和围绕衬底和介质的气氛之间形成三线。 为了化学去除错误,特别是在侧表面中,应当进行相对运动,同时避免处理介质与基板的顶表面的接触,其中三线形成在面向侧面的所需高度 相对于衬底和处理介质之间的相对运动而离开工艺介质流动侧。

    METHOD FOR CHEMICALLY TREATING A SUBSTRATE
    8.
    发明申请
    METHOD FOR CHEMICALLY TREATING A SUBSTRATE 失效
    化学处理基材的方法

    公开(公告)号:US20110183524A1

    公开(公告)日:2011-07-28

    申请号:US13059560

    申请日:2009-09-29

    IPC分类号: H01L21/306

    摘要: A method for chemically treating a disc-shaped substrate having a bottom surface, a top surface and side surfaces by contacting a process medium that is fluid-chemically active with at least the bottom surface of the substrate. The substrate is moved relative to the process medium while forming a triple line between the substrate, the substrate medium and the atmosphere surrounding the substrate and medium. In order to chemically remove errors, particularly in the side surfaces, relative motion should be carried out while avoiding a contacting of the process medium with the top surface of the substrate, where the triple line is formed at a desired height of the side surface facing away from the process medium flow side in relation to the relative motion between the substrate and the process medium. In this way, the atmosphere can be adjusted in relation to the partial pressures of the components in the process medium such that the top surface preserves hydrophobic characteristics.

    摘要翻译: 一种用于通过使具有流体化学活性的处理介质与至少底物的底表面接触来化学处理具有底表面,顶表面和侧表面的盘形基底的方法。 衬底相对于处理介质移动,同时在衬底,衬底介质和围绕衬底和介质的气氛之间形成三线。 为了化学去除错误,特别是在侧表面中,应当进行相对运动,同时避免处理介质与基板的顶表面的接触,其中三线形成在面向侧面的所需高度 相对于衬底和处理介质之间的相对运动而离开工艺介质流动侧。 以这种方式,可以相对于处理介质中的组分的分压来调整气氛,使得顶表面保持疏水特性。

    METHOD FOR THE CONTACT SEPARATION OF ELECTRICALLY-CONDUCTING LAYERS ON THE BACK CONTACTS OF SOLAR CELLS AND CORRESPONDING SOLAR CELL
    9.
    发明申请
    METHOD FOR THE CONTACT SEPARATION OF ELECTRICALLY-CONDUCTING LAYERS ON THE BACK CONTACTS OF SOLAR CELLS AND CORRESPONDING SOLAR CELL 审中-公开
    太阳能电池和相关太阳能电池背面接触电导体层的接触分离方法

    公开(公告)号:US20110053312A1

    公开(公告)日:2011-03-03

    申请号:US12881714

    申请日:2010-09-14

    IPC分类号: H01L31/0224

    摘要: A method for fabricating a solar cell comprising a semiconductor substrate is proposed where electrical contacting is made on the back side of the semiconductor substrate. The back side of the semiconductor substrate has locally doped regions. The adjacent regions exhibit different doping from the region. The two regions are initially coated with electrically conductive material over the entire area. So that the conductive material does not short-circuit the solar cell, the two regions are covered with a thin electrically insulating layer at least at the region boundaries.The electrically conductive layer is separated by applying an etch barrier layer over the entire surface which is then removed free from masking and selectively e.g. by laser ablation, locally above the insulating layer. The conductive layer is locally removed in the area of the openings of the etch barrier layer by subsequent action of an etching solution.

    摘要翻译: 提出一种制造包括半导体衬底的太阳能电池的方法,其中在半导体衬底的背侧进行电接触。 半导体衬底的背面具有局部掺杂区域。 相邻区域表现出与该区域不同的掺杂。 这两个区域最初在整个区域上涂覆有导电材料。 因此,导电材料不会使太阳能电池短路,至少在区域边界处,两个区域被薄的电绝缘层覆盖。 通过在整个表面上施加蚀刻阻挡层来分离导电层,然后将其去除而不被掩蔽,并且选择性地例如被除去。 通过激光烧蚀局部在绝缘层上方。 通过蚀刻溶液的后续作用,在蚀刻阻挡层的开口的区域中局部去除导电层。