Defect control and performance optimization in Li+/Na+ Co-doped HTL-free Cs2AgBiBr6 double perovskite solar cells: Toward an efficient HTL-free architecture

Key Points

• Performance optimization is achieved through effective defect control in double perovskite solar cells.
• Using lithium and sodium co-doping, a significant reduction in defects is observed, enhancing efficiency.
• Assessment through experimental analysis reveals promising outcomes for HTL-free solar cell designs.
• Implications of this research highlight the potential for more efficient solar technologies without traditional hole transport layers.