Effect of lattice softness on nonradiative defect capture

Determine whether lattice softness in lead-halide perovskites suppresses or enhances nonradiative carrier capture by defects.

Background

The soft, anharmonic lattice modifies the multiphonon processes involved in nonradiative recombination, but its net effect is uncertain. This issue is central to evaluating whether lattice dynamics contributes materially to the apparent defect tolerance of lead-halide perovskites.

References

Whether lattice softness suppresses or enhances capture remains an open question addressed by the first-principles calculations of Section 9.3.

— Band-like Carriers in a Soft, Anharmonic Lattice: Lead-Halide Perovskites  (2608.28104 - Lee et al., 28 Aug 2026) in Section 9.4, What the lattice adds: screening, capture, and disorder