Fig. 2: Recombination dynamics of quasi-2D films with different Eb.
From: Reducing the impact of Auger recombination in quasi-2D perovskite light-emitting diodes
a PL intensity at t = 0 (IPL0) as a function of carrier density. b Film’s PLQYs as a function of carrier density for PEA and p-FPEA quasi-2D films, respectively. Time- and wavelength-dependent photoluminescence (PL) mapping under a pump fluence of 2.3 μJ cm−2 for c PEA and d p-FPEA films. e TRPL decay transients for PEA and p-FPEA perovskite films under a low pump fluence of 10 nJ cm−2. f Simulated radiative efficiency as a function of kexciton and ktrap for quasi-2D films.
