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Nano Convergence
Fig. 1 | Nano Convergence

Fig. 1

From: Design and application of carbon nanomaterials for photoactive and charge transport layers in organic solar cells

Fig. 1

Transmission electron microscopy (TEM) images of poly-3-hexylthiophene (P3HT):6,6-phenyl-C61-butyric acid methyl ester (PCBM) a before thermal annealing, b after annealing at 150 °C for 30 min, and c after annealing at 150 °C for 2 h. Bright features correspond to PCBM, and dark features correspond to P3HT. PCBM and P3HT are clearly separated within 10 nm after thermal annealing. Reprinted with permission from Ma et al. [29], © 2005, Wiley

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