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Figure 2 | Nanoscale Research Letters

Figure 2

From: Ultrafast Dynamics of Localized and Delocalized Polaron Transitions in P3HT/PCBM Blend Materials: The Effects of PCBM Concentration

Figure 2

Transient absorption spectra for P3HT/PCBM blend materials with 1 (a), 10 (b), and 50 wt% (c) PCBM concentration. The spectra measured at 0 ps (open squares), 1 ps (full squares), 2 ps (open circles), 10 ps (full circles), 100 ps (open triangles), and 200 ps (full triangles), respectively, following the pulse excitation at 3.8 eV. The P2, DP2, and SF bands are assigned. The color curves represent the fits using a superposition of two Gaussian peaks centered at the reported values of polaron states in the literature [5]

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