Recent progress in organic solar cells (Part II device engineering)

Organic solar cells (OSCs) have gained a rapid development in the past two decades and the power conversion efficiency (PCE) of single-junction OSC has recently approached 20%. The novel materials and device engineering are two key factors of this evolution. In this review, the device engineering, including morphology characterization and optimization, device physics, flexible and large-area OSCs, and stability of OSCs are systematically summarized. In addition, the current challenges, problems and future developments are also discussed.

Automated summary

This review examines the rapid development of organic solar cells and highlights the importance of device engineering in achieving high power conversion efficiency. The challenges, problems, and future developments in this field are also discussed.