A degradation-resistant photovoltaic device is provided. The device includes an active area and at least one photovoltaic cell located in the active area. The photovoltaic cell has an elongated shape with a characteristic width and a characteristic length. The characteristic length is greater than the characteristic width and an average distance from the photovoltaic cell to any edge of the active area is greater than the characteristic width.

A degradation-resistant photovoltaic device is provided. The device includes an active area and at least one photovoltaic cell located in the active area. The photovoltaic cell has an elongated shape with a characteristic width and a characteristic length. The characteristic length is greater than the characteristic width and an average distance from the photovoltaic cell to any edge of the active area is greater than the characteristic width.

The present disclosure provides a preparation method of a thin film solar battery, including the following steps: a) performing a first etching of the back electrode layer to form a plurality of first grooves; b) forming an insulator in each of the plurality of first grooves, thereby forming a plurality of insulators; c) forming a light absorption layer and a buffer layer sequentially on a surface of the back electrode layer, performing a second etching of the light absorption layer and the buffer layer to form a plurality of second grooves; and d) forming an upper electrode layer on a surface of the buffer layer, the upper electrode layer extending to the plurality of second grooves, and performing a third etching of the upper electrode layer, the buffer layer, and the light absorption layer to form a plurality of third grooves passing through the upper electrode layer, the buffer layer, and the light absorption layer, so as to obtain a plurality of serially connected battery cells.

The present disclosure provides a preparation method of a thin film solar battery, including the following steps: a) performing a first etching of the back electrode layer to form a plurality of first grooves; b) forming an insulator in each of the plurality of first grooves, thereby forming a plurality of insulators; c) forming a light absorption layer and a buffer layer sequentially on a surface of the back electrode layer, performing a second etching of the light absorption layer and the buffer layer to form a plurality of second grooves; and d) forming an upper electrode layer on a surface of the buffer layer, the upper electrode layer extending to the plurality of second grooves, and performing a third etching of the upper electrode layer, the buffer layer, and the light absorption layer to form a plurality of third grooves passing through the upper electrode layer, the buffer layer, and the light absorption layer, so as to obtain a plurality of serially connected battery cells.

A thin film solar cell, including a substrate and a plurality of cell units disposed on the substrate, each cell unit includes a back electrode layer, a light absorbing layer, a buffer layer, and an upper electrode layer which are sequentially disposed. A first groove throughout the back electrode layer is disposed between the back electrode layers of any two adjacent cell units; the first groove is filled with an insulating portion. A second groove throughout the light absorbing layer and the buffer layer is disposed in each cell unit, the upper electrode layer of this cell unit extends to the second groove of this cell unit to contact the back electrode layer of the other cell unit of the two adjacent cell units. A third groove is disposed between the two adjacent cell units, the third groove insulate the upper electrode layers of the two adjacent cell units.

The invention relates a full-laser scribing method for a flexible stainless steel substrate solar cell module, comprising: preparing an insulating layer and a molybdenum layer on a stainless steel substrate in sequence; using a laser I to scribe the prepared insulating layer and molybdenum layer to form a first scribed line (P1); preparing the following film layers in sequence on the molybdenum layer in which P1 has been scribed: a CIGS layer, a cadmium sulfide layer and an intrinsic zinc oxide layer; using a laser II to make scribe and thus form a second scribed line (P2), wherein the second scribed line P2 is parallel with the first scribed line P1; and preparing an aluminum-doped zinc oxide layer on the intrinsic zinc oxide layer in which P2 has been scribed, and using a laser III to make scribe and thus form a third scribed line (P3), wherein the third scribed line P3 is parallel with the first scribed line P1. The invention may avoid disadvantages caused by the screen printing, such as large dead zone, expensive screen printing paste and frequent replacement of screens for screen printing, thereby improve efficiency and stability of the module and save cost and increase production efficiency.

The invention relates a full-laser scribing method for a flexible stainless steel substrate solar cell module, comprising: preparing an insulating layer and a molybdenum layer on a stainless steel substrate in sequence; using a laser I to scribe the prepared insulating layer and molybdenum layer to form a first scribed line (P1); preparing the following film layers in sequence on the molybdenum layer in which P1 has been scribed: a CIGS layer, a cadmium sulfide layer and an intrinsic zinc oxide layer; using a laser II to make scribe and thus form a second scribed line (P2), wherein the second scribed line P2 is parallel with the first scribed line P1; and preparing an aluminum-doped zinc oxide layer on the intrinsic zinc oxide layer in which P2 has been scribed, and using a laser III to make scribe and thus form a third scribed line (P3), wherein the third scribed line P3 is parallel with the first scribed line P1. The invention may avoid disadvantages caused by the screen printing, such as large dead zone, expensive screen printing paste and frequent replacement of screens for screen printing, thereby improve efficiency and stability of the module and save cost and increase production efficiency.

Thin-film solar cell modules and serial cell-to-cell interconnect structures and methods of fabrication are described. In an embodiment, a solar cell interconnect includes a bypass diode between adjacent solar cells to allow the flow of current around a single solar cell.

Thin-film solar cell modules and serial cell-to-cell interconnect structures and methods of fabrication are described. In an embodiment, a solar cell interconnect includes a bypass diode between adjacent solar cells to allow the flow of current around a single solar cell.

The invention relates to a photovoltaic mono cell that is semi-transparent to light, comprising a plurality of active photovoltaic zones that are separated by transparent zones, said active photovoltaic zones being formed from a stack of thin films arranged on a substrate that is transparent to light, said stack of thin films consisting at least of a transparent electrode, an absorber layer and a metal electrode, said transparent zones being apertures produced at least in the metal electrode and in the absorber layer in order to allow as much light as possible to pass, characterized in that it furthermore comprises an electrically conductive collecting gate arranged either making contact with the front electrode in order to decrease the electrical resistance of the transparent electrode, or making contact with the absorber in order to facilitate collection of the electrical current generated by said mono cell.