Improvement of the performance of Cu2ZnSn(S,Se)4 solar cells by annealing Li-doped Cu2ZnSnS4 precursor film in air

Puntos clave

• Increased power conversion efficiency in Cu2ZnSn(S,Se)4 solar cells is achieved through specific annealing.
• Annealing Li-doped Cu2ZnSnS4 precursor films improves both crystal quality and photoelectric properties.
• Observational analysis reveals critical factors affecting solar cell performance, suggesting improvements in manufacturing.
• These findings highlight the significance of annealing treatments for enhancing solar cell efficiency, pointing to future research.