under high vacuum exhibits an unusual compression behavior during phase transitions and remains in the tetragonal phase even around 78 K. This phase stability is attributed to a substantial drop in thermal expansion coefficient under low pressure. The material achieves a superior carrier diffusion length (10.2-14.9 μm) in the simulated space environment, surpassing its performance in terrestrial settings. These results provide new insight into the structural stability of perovskites and highlight their applicability across various conditions.
Zhao et al. (2026) studied this question.
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