fig7
Figure 7. Structures and optical properties of 2D DJ phase perovskites. (A) XRD patterns of (mPDA)(MA)n-1PbnI3n+1 (with n = 1-3), (B) optical absorption, and (C) PL spectrum (λex = 510 nm) of (mPDA)(MA)n-1PbnI3n+1 (n = 1-3) single crystals. Reprinted with permission from ref.[49]: Copyright 2021, American Chemical Society. (D) Optical absorption, (E) PL, and (F) TRPL spectra of PDA, BDA, PeDA, and HAD-based DJ perovskites compared to 3D MAPbI3 perovskites. Reprinted with permission from ref.[50]: Copyright 2019, Wiley-VCH GmbH.
