Fig. 4: Composition-dependent exciton lifetime.
From: Single-photon superradiance in individual caesium lead halide quantum dots
a, Representative photoluminescence spectrum of a 30-nm CsPbBr3 QD (red line) and a 30-nm CsPb(Br/Cl)3 QD (blue line). b, TRPL decay for the QDs shown in a. c, Statistics over many different single QDs showing a net decrease in the radiative lifetime in CsPb(Br/Cl)3 QDs (blue points) compared with CsPbBr3 QDs (red points). For CsPb(Br/Cl)3 QDs, a minimum lifetime of 80 ps was achieved.
