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    • 1. 发明授权
    • Thin-film solar cell
    • 薄膜太阳能电池
    • US5828117A
    • 1998-10-27
    • US859687
    • 1997-05-21
    • Masataka KondoKatsuhiko HayashiAtsuo IshikawaShinichiro KurataHideo Yamagishi
    • Masataka KondoKatsuhiko HayashiAtsuo IshikawaShinichiro KurataHideo Yamagishi
    • H01L31/0224H01L31/0392H01L31/052H01L31/075H01L31/18H01L31/105H01L31/117
    • H01L31/1884H01L31/022466H01L31/0392H01L31/03925H01L31/056H01L31/075Y02E10/52Y02E10/548
    • The invention provides two kinds of structures for a thin-film solar cell that is improved in the adhesive strength and reflectance of a back surface electrode layer. According to the first structure, in a thin-film solar cell in which a transparent electrode layer, a thin-film semiconductor layer, and a back surface electrode layer are laid in stated order on an insulative transparent substrate, the back surface electrode layer consists of a first transparent conductive metal compound layer having a smaller refractive index than a semiconductor that constitutes the thin-film semiconductor layer, a second transparent conductive metal compound layer, and a metal layer. The second transparent conductive metal compound layer contains at least one of components of the first transparent conductive metal compound layer and a component of the metal layer. According to the second structure, in a thin-film solar cell in which a transparent electrode layer, a thin-film semiconductor layer, and a back surface electrode layer are laid in order on an insulative transparent substrate, the back surface electrode layer is a layered body consisting of a silver thin film, and an intermediate thin layer containing silver, oxygen, and a metal element constituting a transparent conductive metal oxide.
    • 本发明提供两种用于提高背面电极层的粘合强度和反射率的薄膜太阳能电池的结构。 根据第一结构,在透明电极层,薄膜半导体层和背面电极层以绝缘性的透明基板依次配置的薄膜太阳能电池中,背面电极层由 具有比构成薄膜半导体层的半导体的折射率小的第一透明导电金属化合物层,第二透明导电金属化合物层和金属层。 第二透明导电金属化合物层包含第一透明导电金属化合物层和金属层的成分中的至少一种。 根据第二结构,在绝缘性透明基板上依次层叠透明电极层,薄膜半导体层和背面电极层的薄膜太阳能电池中,背面电极层为 由银薄膜构成的层状体,以及含有银,氧,构成透明导电性金属氧化物的金属元素的中间薄层。