👉 A phototropic is a type of photovoltaic (PV) cell that utilizes light as an electrical current source. Phototropics are widely used in solar energy systems due to their high efficiency and low cost, making them suitable for large-scale applications such as residential and commercial buildings. Phototropics consist of two layers of materials: the anode and cathode. The anode is typically made of a metal (such as copper or aluminum) that allows light to pass through it without