公开(公告)号：US20100269897A1

公开(公告)日：2010-10-28

申请号：US12672868

申请日：2009-01-09

申请人： Satoshi Sakai ,  Yuji Asahara ,  Yasuyuki Kobayashi ,  Masafumi Mori ,  Shigenori Tsuruga ,  Nobuki Yamashita

发明人： Satoshi Sakai ,  Yuji Asahara ,  Yasuyuki Kobayashi ,  Masafumi Mori ,  Shigenori Tsuruga ,  Nobuki Yamashita

IPC分类号： H01L31/0352 ,  H01L31/18 ,  H01L31/0224

CPC分类号： H01L31/1884 ,  H01L31/022425 ,  H01L31/0236 ,  H01L31/02366 ,  H01L31/046 ,  H01L31/0463 ,  H01L31/056 ,  H01L31/076 ,  Y02E10/52 ,  Y02E10/548

摘要： A photovoltaic device that exhibits improved light absorption properties for the electric power generation layer and a process for producing such a photovoltaic device are provided by optimizing the surface shape of the back surface structure. A photovoltaic device 100 comprising a first transparent electrode layer 2, an electric power generation layer 3, a second transparent electrode layer 6 and a back electrode layer 4 provided sequentially on a substrate 1, wherein the back electrode layer 4 comprises a thin film of silver, and the surface of the second transparent electrode layer 6 on the surface of the back electrode layer 4 has a fine uneven texture, for which the surface area magnification ratio relative to the projected surface area is not less than 10% and not more than 32%. Also, a photovoltaic device comprising a first transparent electrode layer 2, an electric power generation layer 3, a second transparent electrode layer 6 and a back electrode layer 4 provided sequentially on a substrate 1, wherein the back electrode layer 4 comprises a thin film of silver, the back electrode layer-side surface of the second transparent electrode layer 6 has a fine uneven texture, and the second transparent electrode layer 6 comprises needle-like crystals.

摘要翻译： 通过优化后表面结构的表面形状，提供了表现出对于发电层的改善的光吸收性能的光电器件和用于制造这种光伏器件的工艺。 光电器件100包括依次设置在基板1上的第一透明电极层2，发电层3，第二透明电极层6和背面电极层4，其中背面电极层4包括银的薄膜 并且背面电极层4的表面上的第二透明电极层6的表面具有微细的凹凸纹理，相对于投影表面积的表面积倍率不小于10％且不大于32 ％。 另外，包括依次设置在基板1上的第一透明电极层2，发电层3，第二透明电极层6和背面电极层4的光电器件，其中背面电极层4包括： 银，第二透明电极层6的背面电极层侧表面具有微细的凹凸纹理，第二透明电极层6包括针状晶体。