Cao, C., Mao, H., Zhang, L., Qin, Z., Zhang, B., Yang, L., Zhao, Y., Wen, L., Zhai, Y., Tan, L., Chen, Y. (2026). Pressure‐Modulated Molecular Stacking Strategy Extends Exciton Diffusion Length for Thick‐Film (300 nm) Organic Photovoltaics Exceeding 19% Efficiency. Advanced Materials. https://doi.org/10.1002/adma.202514047