A composition comprising an ethylene/alpha-olefin interpolymer that comprises the following properties: a) a total unsaturation/1000C≥0.30; b) a molecular weight distribution (MWD)≤3.0; c) a TGIC broadness parameter B.sub.1/4≤8.0. A solution N polymerization process to prepare an ethylene/alpha-olefin/interpolymer, said process comprising polymerizing, in one reactor, at a reactor temperature ≥150° C., a reaction mixture comprising ethylene, an alpha-olefin, a solvent, and a metal complex as described herein. A method to determine the TGIC broadness parameter B.sub.1/x of a polymer composition comprising one or more olefin-based polymers.

A solar cell module is disclosed including, in sequence from a light-receiving surface side, a surface glass layer having a thickness of 0.4 mm or more and 1.6 mm or less, a first sealing layer, cells, a second sealing layer, and a back protective layer, wherein the back protective layer comprises, in sequence from a side closer to the second sealing layer, a first resin sheet layer having a flexural modulus of 1500 MPa or more and 5000 MPa or less, a second resin layer having a maximum bending load of 8N/10 mm or more and 100N/10 mm or less, wherein the maximum bending load is measured by a method in accordance with a bending test (JIS K7171) except that only the span between supports is changed to 48 mm, and a third resin sheet layer having a flexural modulus of 1500 MPa or more and 5000 MPa or less.

A solar cell module is disclosed including, in sequence from a light-receiving surface side, a surface glass layer having a thickness of 0.4 mm or more and 1.6 mm or less, a first sealing layer, cells, a second sealing layer, and a back protective layer, wherein the back protective layer comprises, in sequence from a side closer to the second sealing layer, a first resin sheet layer having a flexural modulus of 1500 MPa or more and 5000 MPa or less, a second resin layer having a maximum bending load of 8N/10 mm or more and 100N/10 mm or less, wherein the maximum bending load is measured by a method in accordance with a bending test (JIS K7171) except that only the span between supports is changed to 48 mm, and a third resin sheet layer having a flexural modulus of 1500 MPa or more and 5000 MPa or less.

A solar cell module is disclosed including, in sequence from a light-receiving surface side, a surface glass layer having a thickness of 0.4 mm or more and 1.6 mm or less, a first sealing layer, cells, a second sealing layer, and a back protective layer, wherein the back protective layer comprises, in sequence from a side closer to the second sealing layer, a first easy-adhesion resin layer having adhesiveness to the second sealing layer, a second resin sheet layer having a flexural modulus of 1500 MPa or more and 4000 MPa or less, a third resin layer being in a foam state and having a flexural modulus of 200 MPa or more and 1000 MPa or less, and a fourth resin layer having a flexural modulus of 10000 MPa or more and 45000 MPa or less.

A solar cell module is disclosed including, in sequence from a light-receiving surface side, a surface glass layer having a thickness of 0.4 mm or more and 1.6 mm or less, a first sealing layer, cells, a second sealing layer, and a back protective layer, wherein the back protective layer comprises, in sequence from a side closer to the second sealing layer, a first easy-adhesion resin layer having adhesiveness to the second sealing layer, a second resin sheet layer having a flexural modulus of 1500 MPa or more and 4000 MPa or less, a third resin layer being in a foam state and having a flexural modulus of 200 MPa or more and 1000 MPa or less, and a fourth resin layer having a flexural modulus of 10000 MPa or more and 45000 MPa or less.

A system includes a plurality of roofing modules and a plurality of photovoltaic modules. The roofing modules include a first layer and a second layer. The first layer has a first surface that is textured. The roofing modules are configured to be installed on the roof deck of a structure proximate to the photovoltaic modules. An appearance of the roofing modules aesthetically matches an appearance of the photovoltaic modules when viewed from a vantage point located at a ground level of the structure.

A double-glass photovoltaic assembly includes a laminate member, a junction box, and a first frame and a second frame disposed only at two long sides of the laminate member. The laminate member includes a cover plate glass, a first encapsulation adhesive film, a battery string, a second encapsulation adhesive film, a back plate glass, and a busbar. A through-hole is provided at the back plate glass. An end of the busbar is connected to the battery string. Another end of the busbar passes through the through-hole, and is bent to form a bent edge to be connected to the junction box. The bent edge of the busbar does not contact an edge of the through-hole. The double-glass photovoltaic assembly adopting a double-frame design can meet the requirements of load capacity.

A 12th solar cell and a 13th solar cell are provided to overlap in part as viewed from a side of a light receiving surface 22. A portion of a light receiving surface of the 12th solar cell and a portion of a back surface of the 13th solar cell face each other in an overlapping portion across a wire. The overlapping portion includes a part where a resin is located both between the light receiving surface of the 12th solar cell and the wire and between the back surface of the 13th cell and the wiring member.

A 12th solar cell and a 13th solar cell are provided to overlap in part as viewed from a side of a light receiving surface 22. A portion of a light receiving surface of the 12th solar cell and a portion of a back surface of the 13th solar cell face each other in an overlapping portion across a wire. The overlapping portion includes a part where a resin is located both between the light receiving surface of the 12th solar cell and the wire and between the back surface of the 13th cell and the wiring member.

Photovoltaic devices, and methods of making the same, are described. A photovoltaic device comprises a plurality of electrically connected photovoltaic cells, wherein the photovoltaic cells comprise a conducting layer having a first surface and a second surface, the first surface facing an absorber layer; an insulating material disposed on the second surface over at least one of the photovoltaic cells; a conductive member on the insulating material, wherein the insulating material is configured to electrically insulate the conductive member from the second surface; a bus member electrically coupled to the one of the plurality of photovoltaic cells and to the conductive member; and an edge seal comprising a sealant material extending over at least a portion of the one of the plurality of photovoltaic cells; wherein the bus member is disposed between the edge seal and the plurality of photovoltaic cells.