Ultrafast charge-generation dynamics through interfacial energetic modulation for high-performance single-component organic photovoltaics with 14.8% efficiency (opens in new tab)

Bulk heterojunction (BHJ) organic solar cells (OSCs) have achieved high efficiencies but suffer from poor morphological stability due to phase separation after long-term operation. Single-component OSCs (SCOSCs) based on double-cable polymers (DCP), offer improved stability through covalently linked donor and acceptor units. However, their efficiency remains limited by inefficient charge generation arising from extensive intermixed morphologies. Here, we report a fluorinated double-cable poly...