Evolution of interfacial defects and energy losses during aging of organic photovoltaics

• Main Authors: Liu P., Huang Y., Wang Z., Liu W., Yap B., He Z., Wu H.
• Other Authors: 58862117000
• Format: Article
• Published: Elsevier B.V. 2025
• Subjects: Conducting polymers; Conversion efficiency; Defect states; Degradation; Electrochemical impedance spectroscopy; Organic solar cells; Quantum theory; Semiconductor quantum wells; Solar power generation; Tungsten compounds; Deep traps; Defect state; Device stability; Hole transport layers; Interfacial defect; Interfacial defect state; Nonradiative recombination; Organic photovoltaics; Recombination; Recombination loss; Work function

As the power conversion efficiencies of Organic Solar Cells (OSCs) approach 20 %, the stability of the device becomes an increasingly urgent issue. To enhance device stability, it is crucial to identify potential loss mechanisms. In this study, we investigated the trap-state-dependent degradation me...