Conductive Nanowire Grid for Solar Cell Mechanical Integrity

The patent applies composite materials by integrating a network of conductive nanowires into the solar cell structure. The nanowire network forms a composite with the crystalline silicon substrate, creating a hybrid structure that combines the high efficiency of crystalline silicon with the mechanical flexibility and crack resistance of the nanowire mesh. This composite approach allows the solar cell to maintain high power conversion efficiency while gaining improved mechanical integrity and flexibility.

The patent employs flexible thin films by using a network of conductive nanowires that form a flexible grid pattern on the solar cell surface. These nanowires are arranged in a thin, flexible layer that can bend and flex without causing damage to the underlying crystalline silicon structure. This flexible nanowire network acts as a reinforcement layer that prevents crack propagation while maintaining the cell's flexibility and mechanical integrity.

The patent utilizes pneumatic methods by employing spray deposition techniques to apply the nanowire solution onto the solar cell surface. The solution containing suspended conductive nanowires is sprayed through a mask in a controlled manner, allowing for simple and scalable application of the nanowire network. This pneumatic spray approach avoids complex manufacturing processes such as vacuum deposition or chemical vapor deposition, thereby reducing device complexity while achieving effective mechanical reinforcement.

The patent applies parameter changes by controlling the drying or evaporation process of the solvent after spray deposition. By adjusting parameters such as drying time, temperature, or airflow conditions, the nanowires are caused to self-assemble into the desired grid pattern on the solar cell surface. This simple parameter-controlled approach eliminates the need for complex patterning processes, reducing overall device complexity while achieving the desired mechanical integrity improvement.

The patent employs self-service by utilizing the self-assembly behavior of conductive nanowires during the drying or evaporation process. When the nanowire solution is sprayed onto the solar cell surface, the nanowires naturally organize themselves into a grid pattern as the solvent evaporates. This self-organizing behavior eliminates the need for precise external control or complex alignment procedures, thereby reducing manufacturing precision requirements while still achieving a well-defined grid pattern that provides effective mechanical reinforcement.

The patent uses an intermediary medium by employing a solvent or carrier liquid that suspends the conductive nanowires during application. This intermediary fluid allows the nanowires to be evenly distributed and deposited onto the solar cell surface through spray deposition. As the intermediary solvent dries or evaporates, it leaves behind the nanowire grid pattern. This intermediary approach simplifies the manufacturing process by enabling easy application and self-organization of nanowires without requiring high precision positioning or complex deposition equipment.