Fig. 1: Emission line-broadening in nanomaterials: the case of perovskite compounds.
From: Ultra-narrow room-temperature emission from single CsPbBr3 perovskite quantum dots
a A sketch of different emission line-broadening mechanisms (\({\varGamma }_{{{\mathrm {PL}}}}\) is the linewidth, \({k}_{\mathrm {{B}}}T\) the thermal energy, and FSS the fine structure splitting). b Schematic of the CsPbBr3 crystal structure with two HAADF-STEM images, representing the two studied QD batches with mean edge lengths of 7 and 14 nm, respectively. c Room-temperature emission spectra at the ensemble and single particle levels. Both PL spectra feature similar emission line-broadening. Solid lines are best fits of a Lorentzian function to the experimental data (colored open circles).
