The Effect of Intrinsic Defects in Grain Boundaries on Non-Radiative Recombination in CsPbI3 and CsPbBr3

Key Points

• This research investigates how intrinsic defects at grain boundaries affect non-radiative recombination in halide perovskites.
• Conducted spatially resolved photoluminescence measurements around grain boundaries in CsPbI3 and CsPbBr3 materials.
• Analyzed variations in emission intensity related to the presence of intrinsic defects.
• Observed significant variations in photoluminescence intensity near grain boundaries, indicating strong influence of defects.
• Identified a correlation between defect density and levels of non-radiative recombination, highlighting implications for device efficiency.