Enhanced Charge Separation and Prolonged Carrier Lifetime in Mixed Sn-Ge Halide Perovskite Enabled by Spontaneous Symmetry Breaking and Moderate Disorder

Constructing metal halide perovskites with intrinsic ferroelectric properties represents an effective strategy to enhance the performance of perovskite-based optoelectronic devices. For the most common ferroelectric hybrid organic-inorganic halide perovskites, the...