Perovskite Solar Cells (PSCs) represent a class of photovoltaic devices that employ perovskite-structured materials as the light-harvesting active layer. These materials, typically hybrid organic-inorganic lead or tin halide-based compositions, are renowned for their excellent light absorption, charge-carrier mobilities, and flexible tunability. With conversion efficiencies that have seen unprecedented increases, reaching over 25% within a few years of development, PSCs stand at the forefront of solar technology research.
The architecture of these cells can vary from simple planar structures to more complex multi-layered configurations, often incorporating materials like metal oxides, organometal halides, and conductive polymers to enhance performance and stability. The efficiency of PSCs comes from their broad absorption spectrum and high carrier transport properties, making them highly effective even in low-light conditions. Critical challenges include long-term durability and lead toxicity, with ongoing research focusing on lead-free alternatives and new encapsulation techniques to address these issues. PSCs are poised to play a crucial role in the transition towards more sustainable energy solutions, potentially revolutionising solar energy applications due to their low production costs and superior photovoltaic properties.
