Fig. 4: Size-quantized acoustic phonons in a single CsPbI3 NC.
From: Exciton-acoustic phonon coupling revealed by resonant excitation of single perovskite nanocrystals
a Resonantly-excited higher-energy peak (green), the associated side peaks from size-quantized acoustic photons (orange), and the down-converted lower-energy peak (red). Inset: Amplified view of the low-signal region. See Supplementary Fig. 7 and related discussions in the Supplementary Information for theoretical fit of this resonantly-excited PL spectrum. b Resonantly-excited lower-energy peak (red), the associated side peaks from size-quantized acoustic photons (orange), and the up-converted higher-energy peak (green). Inset: Amplified view of the low-signal region.
