• • DHHB integrates UV shielding, dynamic strain regulation, and defect passivation in a single molecule, addressing multi-mode degradation pathways simultaneously, a significant advancement over single-function additives.
• • The flexible octyl alkyl chain in OPVB enables reversible conformational changes, providing in situ stress relief at buried interfaces under temperature cycling, mitigating lattice distortion and maintaining device integrity.
• • The molecular design achieves defect passivation via hydroxyl and carbonyl groups, reducing trap states and enhancing carrier extraction, contributing to the >27% certified efficiency benchmark.
• • This strategy offers a scalable solution for improving operational stability of PSCs, potentially accelerating market growth projected to $6.6 billion by 2030.