Efficiency Advancements and Mechanical Durability of Ultrathin Flexible Organic Photovoltaics

抄録

Ultrathin flexible organic photovoltaics （OPVs） have attracted growing attention as lightweight and conformable energy harvesters for wearable and soft electronic systems. Unlike conventional photovoltaics, ultrathin OPVs, typically below 10 μm in total thickness, exhibit remarkable bendability and mechanical durability, enabling integration with curved and dynamic surfaces. This review highlights recent advances in device architecture, efficiency improvement strategies, and mechanical durability against repeated deformation. Particular emphasis is placed on structural design principles, such as neutral mechanical plane engineering and alternative flexible electrodes, as well as evaluation protocols for bending stability and fatigue resistance. By focusing on efficiency and mechanical durability, this paper maps a pathway toward practical deployment of ultrathin OPVs as conformable and reliable power sources, bridging materials innovation with system-level design for flexible energy technologies.