Instability of Two-dimensional Hybrid Perovskites Underpinned by Organic Molecule Loss under Light Illumination

The photodegradation mechanism involves light-driven loss of organic molecules in 2D (BA) 2 (MA) n −1 Pb n Br 3 n +1 perovskites. It reveals a faster loss rate for BA compared to MA molecules and higher photostability in samples with greater n values.