Fig. 4: Exciton binding energies measurement.

Temperature-dependent PL spectra with excitation wavelength at 380 nm and extracted exciton binding energies of a, b BD-CON and c, d CYANO-CON.

Temperature-dependent PL spectra with excitation wavelength at 380 nm and extracted exciton binding energies of a, b BD-CON and c, d CYANO-CON.