Strategies for Enhancing Energy-Level Matching in Perovskite Solar Cells: An Energy Flow Perspective

• Energy transfer is systematically reviewed as a guiding principle for current materials and optimization strategies in perovskite solar cells. • Characteristic mechanisms are identified to classify energy-level optimization strategies into two categories. • Performance-enhancement strategies for perovskite solar cells are analyzed from a quantum-level perspective. • The review provides theoretical insights for reducing energy dissipation and guiding experimental design in PSCs.