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. 2020 Nov 20;6(47):eabb3095. doi: 10.1126/sciadv.abb3095

Fig. 1. Spectra from CQDs with a concentration of 1 × 10−8M on 3-μm SiO2/Si.

Fig. 1

(A) Spectral image. (B) Spectrum at an angle of 0°. (C) Spectrum at an angle of 14°. (D) Extracted spectral lines for angles ranging from 14° to 30.6°. The vertical dashed line represents the exciton transition energy, and the two curved dashed lines represent the peak energy trajectories. (E) Angular dispersion of the coupled exciton transition energies of the F-P cavities formed in SiO2/Si. The scattered symbols correspond to the experimental results of PL spectral peaks. The horizontal dotted line at 1.893 eV is the CQD exciton transition energy in a solvent. The dashed gray line and the dashed light gray line show the angular dispersion of the photon modes for the F-P cavities without CQDs. The solid lines are fits to the experimental results using the strong coupling formula (Eq. 2). The on-resonance Rabi splitting energy between the two transitions is marked by the arrow. a.u., arbitrary units.