Halide Segregation Governs Interfacial Charge-Transfer Pathways in Mixed-Halide Perovskites

Key Points

• The aim is to understand how halide segregation impacts charge-transfer pathways in mixed-halide perovskites.
• Directly probe charge-transfer pathways
• Analyze the effects of light-induced halide segregation
• Evaluate operational stability of perovskites
• Halide segregation significantly compromises charge-transfer efficiency
• Operative stability decreases under light exposure