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    • 3. 发明申请
    • SOLAR CELL HAVING A CONTACT STRUCTURE WITH LOW RECOMBINATION LOSSES, AND METHOD FOR THE PRODUCTION OF SUCH SOLAR CELLS
    • 具有低重建损耗的接触结构的太阳能电池和这种太阳能电池的制造工艺
    • WO2010142684A4
    • 2011-07-21
    • PCT/EP2010058016
    • 2010-06-08
    • INST SOLARENERGIEFORSCHUNGHARDER NILS-PETERSCHMIDT JANBRENDEL ROLF
    • HARDER NILS-PETERSCHMIDT JANBRENDEL ROLF
    • H01L31/0224H01L31/062H01L31/0747
    • H01L31/022441H01L31/02167H01L31/062H01L31/0682H01L31/0747Y02E10/547
    • A concept for a highly efficient solar cell, especially on the basis of high-quality crystalline silicon, as well as a method for producing such a solar cell are disclosed. In the solar cell (1), a contact structure (3) is formed using a layered stack arrangement that comprises a first layer (19) made of an electrically insulating material, a second layer (21) made of a semiconductor material, and a third layer (22) made of an electrically conductive material. The first (dielectric) layer is disposed between the substrate (17) and the second (semiconducting) layer (21) and is designed in such a way that a significant degree of charge carrier tunneling can occur between the substrate (17) and the second layer (21) through the first layer (19). The semiconductor material of the solar cell substrate and the semiconductor material of the second layer have different electrical properties as a result of different band structures such that the electron/hole selectivity of the tunneling process within the contact structure can be influenced, thus allowing the recombination losses caused by the contact structure to be significantly reduced.
    • 提出了特别基于高质量晶体硅的高效太阳能电池的概念以及用于这种太阳能电池的生产方法。 在太阳能电池(1)通过包括由电绝缘材料制成的第一层(19)的层堆叠排列的方式形成的,一个接触结构(3),由半导体材料制成的第二层(21)和一个第三层(22),其电 包括导电材料。 第一介电层是在所述基板(17)和(21),其设置和构造成在第二半导体层之间的这种情况下的电荷载流子在基板(17)和通过所述第一层的第二层(21)之间的显著隧穿 (19)成为可能。 由于不同的带结构,太阳能电池基板的半导体材料和第二层的半导体材料具有不同的电特性。 以这种方式,可以影响接触结构内的隧穿过程的电子/空穴选择性,由此可以通过导致复合损失的接触结构显着降低。
    • 8. 发明申请
    • REAR-CONTACT SOLAR CELL HAVING LARGE REAR SIDE EMITTER REGIONS AND METHOD FOR PRODUCING THE SAME
    • 配备了大BACK发射极面积及其方法背接触太阳能电池
    • WO2009074469A3
    • 2009-09-24
    • PCT/EP2008066445
    • 2008-11-28
    • INST SOLARENERGIEFORSCHUNGHARDER NILS-PETER
    • HARDER NILS-PETER
    • H01L31/0224H01L31/0352H01L31/068
    • H01L31/0682H01L31/022441Y02E10/547
    • The invention relates to a rear-contact solar cell and to a method for producing the same. The rear-contact solar cell comprises a semiconductor substrate (1) on the rear side surface (3) of which emitter regions (5), contacted by emitter contacts (11), and base regions (7), contacted by base contacts (13), are defined. The emitter regions and the base regions overlap at least in overlap regions (19), the emitter regions (5) in the overlap regions (19) reaching deeper into the semiconductor substrate (1) than the base regions (7), when seen from the rear side surface of the solar cell. As a result, a large area percentage of the rear side of the semiconductor substrate can be covered with a charge-collecting emitter, said emitter being at least partially buried in the interior of the semiconductor substrate (1) so that there is no risk of the base contacts (13) provoking a short circuit towards the buried emitter regions (5).
    • 中描述了一种背接触太阳能电池和用于其制备的方法。 背接触太阳能电池包括:半导体衬底(1),在其后方侧表面(3)发射极区域(5),其由发射器触点(11)和基座部分(7)相接触,将接触基极接触(13),形成 是。 发射极区域和基极区域中的重叠区域中,至少重叠,其中,所述发射极区域(5)在从太阳能电池的后侧表面看从更深的半导体衬底中的重叠区域(19)(1)延伸的基底部分(7)。 可通过发射器的半导体基板的背面侧的大面积比率来实现,在一方面,而是可以通过电荷载流子收集发射器在掩埋“”的半导体衬底(1)的内部被覆盖,至少部分,从而不存在风险,即基极接触 13挑起短路到掩埋发射极区(5)。