Fig. 3: Phase distribution and crystal orientation for effective energy funneling.
From: High-performance quasi-2D perovskite light-emitting diodes: from materials to devices
a TA spectra at different timescales for a quasi-2D perovskite film with a flat energy landscape. Time-dependent TA spectral traces for b an <n> = 3 perovskite film with an engineered energy landscape and c an <n> = 5 film with a graded energy landscape. d Pump power density-dependent PLQYs for different perovskite systems. Time-dependent TA spectral traces of different quasi-2D perovskite films obtained from e DMSO and f NMP solvents. Panels a–d are reprinted from ref. 75 with permission from the American Chemical Society. Panels e and f are reprinted from ref. 77 with permission from Wiley
