Stoichiometry-Driven Structural Superiority and Crossover from Intrinsic Band-like to Hopping Transport in Mixed Cation Perovskite Single Crystals

Key Points

• The aim is to understand how stoichiometry influences the charge transport properties in mixed cation perovskite single crystals.
• Analyzed charge transport characteristics in perovskite materials
• Investigated the role of ion migration in transport behaviors
• Utilized structural and electrical measurements to assess transport mechanisms
• Identified a crossover from intrinsic band-like to hopping transport modes
• Found that stoichiometric variations significantly impact charge mobility
• Demonstrated the influence of extrinsic charge disorder on transport efficiency