fig8
Figure 8. Comparison of structure and optoelectrical properties between RP and DJ phases. (A) Crystal structures of RP and DJ phase perovskites (n = 3). Reprinted with permission from ref.[53]: Copyright 2019, American Chemical Society. (B) Bandgap and (C) PL emission value depending on inorganic layer thickness (n) of (BA)2(MA)n-1PbnI3n+1, (PA)2(MA)n-1PbnI3n+1, (HA)2(MA)n-1PbnI3n+1, (3AMP)(MA)n-1PbnI3n+1, and (4AMP)(MA)n-1PbnI3n+1. Reprinted with permission from ref.[55]: Copyright 2021, American Chemical Society. (D) Absorption, (E) PL, and (F) photocurrent at 455 nm light source of (4AEPy)2PbI4 and (4AEPy)PbI4 perovskites. Reprinted with permission from ref.[56]: Copyright 2023, Wiley-VCH GmbH.