3LI-8 : Material engineering strategies to realize efficient and stable quantum dot solar cells

Colloidal quantum dots (CQDs) have been considered as promising semiconducting materials for various optoelectronic applications owing to their unique characteristics including size-tunable optical and electrical properties, solution processability. An intensive effort to improve performance of CQD solar cells has led to certified device efficiencies over 12%. Recent advances in CQD PV have relied on lead iodide (PbI2) passivated lead sulfide (PbS) CQD solids fabricated using solution-based ligand exchanges. However, several remained issues in this field such as low open-circuit voltage, lack of interfacial materials for infrared CQD solar cells, and device stability should be improved further. In this presentation, I’ll introduce several recent advanced strategies to address these issues, and discuss next direction for CQD solar cells.