Gustaaf Van Tendeloo

Antiphase Boundaries Regulate Phase Stability and Performance in DMA + ‐Assisted CsPbI 3 ‐Based Perovskites

ABSTRACT CsPbI 3 ‐based perovskites are promising absorbers for tandem solar cells owing to their optimal bandgap (∼1.7 eV). However, the phase transition from photoactive γ‐CsPbI 3 to non‐photoactive δ‐CsPbI 3 remains a major obstacle and is strongly governed by microstructural...