fig5

Figure 5. (A) Energy levels of P3HT, PC₆₁BM and PCPDTBT. Reproduced with permission. Copyright, 2010 John Wiley and Sons^[96]. (B) Normalized enthalpy of PCPDTBT:P3HT and PCPDTBT:PC₆₁BM blends with various PCPDTBT contents. Reproduced with permission. Copyright, 2012 Royal Society of Chemistry^[98]. (C) X-ray spectra of P3HT:PC₆₁BM blends as a function of P3BT content. Reproduced with permission. Copyright, 2015 Royal Society of Chemistry^[99].