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    • 9. 发明授权
    • Photovoltaic element and solar cell module
    • 光伏元件和太阳能电池组件
    • US06252158B1
    • 2001-06-26
    • US09333002
    • 1999-06-15
    • Makoto Higashikawa
    • Makoto Higashikawa
    • H01L3100
    • H01L31/0725Y02E10/50
    • A photovoltaic element has a first conduction type semiconductor layer 103 of the n+-type or the p+-type, an intrinsic semiconductor layer 108 of the i-type, and a second conduction type semiconductor layer 105 of the p+-type or the n+-type successively stacked on a substrate 101. When a unit 107 is defined as a set of a first microcrystal silicon base semiconductor layer 103 and a second microcrystal silicon base semiconductor layer 104 of mutually different absorption coefficients at 800 nm, the i-type layer 108 includes at least two such units. This makes it possible to provide the photovoltaic element that can absorb the light efficiently with avoiding the light degradation phenomenon (Staebler-Wronski effect) specific to amorphous semiconductors and that has good electric characteristics (mobility &mgr;, lifetime &tgr;) and the like.
    • 光电元件具有n +型或p +型的第一导电型半导体层103,i型的本征半导体层108和p +型或n +型的第二导电型半导体层105。 当单元107被定义为在800nm处具有相互不同的吸收系数的第一微晶硅基底半导体层103和第二微晶硅基底半导体层104的集合时,i型层108 包括至少两个这样的单元。 这使得可以提供能够有效地吸收光的光电元件,同时避免特定于非晶半导体的光劣化现象(Staebler-Wronski效应)并且具有良好的电特性(迁移率μ,寿命)等。