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    • 10. 发明授权
    • Solar cell buffer layer having varying composition
    • 具有不同组成的太阳能电池缓冲层
    • US08318530B2
    • 2012-11-27
    • US12843778
    • 2010-07-26
    • Bulent M. BasolMustafa PinarbasiJames Freitag
    • Bulent M. BasolMustafa PinarbasiJames Freitag
    • H01L21/00
    • H01L31/206C23C18/12C23C18/1204C23C18/125H01L31/022475H01L31/022483H01L31/0322H01L31/0749H01L31/1884Y02E10/541Y02P70/521
    • Described is a continuous electroless deposition method and a system to form a solar cell buffer layer with a varying composition through its thickness are provided. The composition of the buffer layer is varied by varying the composition of a chemical bath deposition solution applied onto an absorber surface on which the buffer layer with varying composition is formed. In one example, the buffer layer with varying composition includes a first section containing CdS, a second section containing CdZnS formed on top of the already deposited CdS, and a third section containing ZnS is formed on the second section All the process steps are applied in a roll-to-roll fashion. In another example, a transparent conductive layer including a first transparent conductive film such as aluminum doped zinc oxide and a second transparent conductive film such as indium tin oxide is deposited over the buffer layer with the varying composition.
    • 描述了一种连续的无电沉积方法,并且提供了通过其厚度形成具有不同组成的太阳能电池缓冲层的系统。 通过改变施加到其上形成有不同组成的缓冲层的吸收体表面上的化学浴沉积溶液的组成来改变缓冲层的组成。 在一个实例中,具有不同成分的缓冲层包括含有CdS的第一部分,在已经沉积的CdS的顶部上形成的包含CdZnS的第二部分,在第二部分上形成包含ZnS的第三部分。所有的工艺步骤都应用于 一对一的滚动时尚。 在另一个实例中,包括第一透明导电膜如铝掺杂氧化锌和第二透明导电膜如氧化铟锡的透明导电层沉积在具有不同组成的缓冲层上。