NOVELTY - A series interconnected photovoltaic module comprises two adjacent photovoltaic devices, each having a light-receiving side and a non-light-receiving side; and a metal in contact with the non-light-receiving side of one photovoltaic device, and electrically connected to the light-receiving side of the other photovoltaic device through an electrode that wraps around an edge portion of its light-receiving side and an edge portion of its non-light-receiving side.    USE - Series interconnected photovoltaic module for solar cells.    ADVANTAGE - The series interconnected photovoltaic module preserves the edge portions of photovoltaic devices while providing an effective interconnection. It enables flexibility in solar cell placement such that solar cells may be closely packed to provide increased energy generation per area.    DETAILED DESCRIPTION - A series interconnected photovoltaic module comprises two adjacent photovoltaic devices, each having a light-receiving side and a non-light-receiving side; and a metal in contact with the non-light-receiving side of one photovoltaic device, and electrically connected to the light-receiving side of the other photovoltaic device through an electrode that wraps around an edge portion of its light-receiving side and an edge portion of its non-light-receiving side. The two photovoltaic devices are less than 1 mm apart. It comprises a substrate (101), a layer of semiconductor material (103, 104, 105) over the substrate, a back reflecting layer (102) between the substrate and the layer of semiconductor material, and a transparent conductor layer (106) on the semiconductor material. The substrate comprises elemental metal(s). The transparent conductor layer comprises metal oxide(s). INDEPENDENT CLAIMS are included for:    (1) a photovoltaic unit;    (2) a photovoltaic module;    (3) a solar cell for a photovoltaic module;    (4) a method of forming a photovoltaic module; and    (5) a method for forming a series interconnected photovoltaic module.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a photovoltaic sheet.    Substrate (101)    Back reflecting layer (102)    Layer of semiconductor material (103, 104, 105)    Transparent conductor layer (106)    Etching material (107)