Intergrated thin-film photovoltaic device and manufacturing method thereof

PURPOSE: An integrated thin film photoelectromotive device and a manufacturing method thereof are provided to improve energy conversion efficiency by reducing the reactive area of a unit cell. CONSTITUTION: Trenches are formed on a substrate(200). A first extrinsic polycrystalline semiconductor material layer(210) is continuously formed on one side of the trench and a substrate which is adjacent to the trench. A second extrinsic polycrystalline semiconductor material layer(230) is entirely overlapped in a space between the trenches and is partially overlapped with the inside of the trenches.