Constructing ternary double bulk heterojunction organic solar cells via layer-by-layer deposition method

Key Points

• The aim is to investigate the efficiency of ternary double bulk heterojunction organic solar cells using a specific deposition method.
• Utilized layer-by-layer (LbL) deposition method for construction.
• Combined PM1:BTP-eC9 and PM1:L8-BO as active materials.
• Assessed performance parameters including power conversion efficiency.
• Achieved a power conversion efficiency (PCE) of 19.62%.
• Demonstrated improved molecular arrangement order.
• Showed high crystallinity and effective interpenetrating networks.