Abstract
Here we report the influence of thermal annealing temperature on the nanostructure and the performance of polymer:polymer solar cells. The active layer was prepared with bulk heterojunction (BHJ) films of poly(3-hexylthiophene) (P3HT) and of poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) doped with (1S)-(+)-10-camphorsulfonic acid (CSA) (F8BT-CSA). The change in the nanostructure of the P3HT:F8BT-CSA films with thermal annealing temperature was investigated by employing a synchrotron radiation grazing-incidence-angle X-ray diffraction (GIXD) technique. Results showed that the power conversion efficiency (PCE) of the P3HT:F8BT-CSA solar cells was noticeably improved by thermal annealing at 150 °C, which could be attributed to the optimized nanostructure in the BHJ film at 150 °C, as suggested by the GIXD measurements.
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Nam, S., Park, S., Seo, J. et al. Influence of annealing temperature on the nanostructure and performance of polymer: Polymer solar cells. Journal of the Korean Physical Society 63, 1368–1372 (2013). https://doi.org/10.3938/jkps.63.1368
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DOI: https://doi.org/10.3938/jkps.63.1368