Figure 3From: Ultrafast Dynamics of Localized and Delocalized Polaron Transitions in P3HT/PCBM Blend Materials: The Effects of PCBM ConcentrationTransient absorption decay profiles obtained from the films of P3HT/PCBM blend materials with 1 (a), 10 (b), and 50 wt% (c) PCBM concentration probed close to the P2and DP2bands. The pump energy is 3.8 eV and the excitation fluence 0.5 mJ/cm2 Back to article page