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    MULTI-JUNCTION SOLAR CELL WITH DILUTE NITRIDE SUB-CELL HAVING GRADED DOPING
    6.
    发明申请
    MULTI-JUNCTION SOLAR CELL WITH DILUTE NITRIDE SUB-CELL HAVING GRADED DOPING 有权
    多功能太阳能电池与具有分级掺杂的稀释氮化物细胞

    公开(公告)号：US20120103403A1

    公开(公告)日：2012-05-03

    申请号：US12914710

    申请日：2010-10-28

    申请人： Pranob Misra ,  Rebecca Elizabeth Jones ,  Ting Liu ,  Ilya Fushman ,  Homan Bernard Yuen

    发明人： Pranob Misra ,  Rebecca Elizabeth Jones ,  Ting Liu ,  Ilya Fushman ,  Homan Bernard Yuen

    IPC分类号： H01L31/0288 ,  H01L31/18

    CPC分类号： H01L31/0735 ,  H01L31/03042 ,  H01L31/03048 ,  H01L31/065 ,  H01L31/0687 ,  H01L31/0725 ,  H01L31/1844 ,  Y02E10/544

    摘要： A lattice-matched solar cell having a dilute nitride-based sub-cell has exponential doping to thereby control current-carrying capacity of the solar cell. Specifically a solar cell with at least one dilute nitride sub-cell that has a variably doped base or emitter is disclosed. In one embodiment, a lattice matched multi junction solar cell has an upper sub-cell, a middle sub-cell and a lower dilute nitride sub-cell, the lower dilute nitride sub-cell having doping in the base and/or the emitter that is at least partially exponentially doped so as to improve its solar cell performance characteristics. In construction, the dilute nitride sub-cell may have the lowest bandgap and be lattice matched to a substrate, the middle cell typically has a higher bandgap than the dilute nitride sub-cell while it is lattice matched to the dilute nitride sub-cell. The upper sub-cell typically has the highest bandgap and is lattice matched to the adjacent sub-cell. In further embodiments, a multi junction solar cell according to the invention may comprise four, five or more sub-cells in which the one or more sub-cells may each comprise exponentially doped dilute nitride alloys.

    摘要翻译： 具有稀氮化物基子电池的晶格匹配太阳能电池具有指数掺杂，从而控制太阳能电池的载流能力。 具体地说，公开了具有至少一个具有可变掺杂的基极或发射极的稀氮氮化物子电池的太阳能电池。 在一个实施例中，晶格匹配多结太阳能电池具有上部子电池，中间子电池和下部稀的氮化物子电池，下部稀土氮化物子电池在基极和/或发射极中具有掺杂， 至少部分地指数地掺杂，以便改善其太阳能电池性能特征。 在构造中，稀氮氮化物子电池可能具有最低的带隙并且与衬底晶格匹配，中间电池通常在稀氮化物子电池与氮化稀土子电池晶格匹配时具有较高的带隙。 上部子单元通常具有最高的带隙并且与相邻的子单元格子匹配。 在另外的实施例中，根据本发明的多结太阳能电池可以包括四个，五个或更多个子电池，其中一个或多个子电池可以各自包含指数掺杂的稀氮化物合金。