Figure 2: Spectra of P3HT homopolymer.
From: An insight into non-emissive excited states in conjugated polymers

Normalized absorption (solid) and fluorescence (dashed) spectra of homopolymer P3HT (10 kDa) toluene solution (black) and bulk film (red). The fluorescence spectra were taken under excitation at the wavelength with maximum absorbance.