Magnetic-field annealing of inverted polymer:fullerene hybrid solar cells with FePt nanowires as additive

Chiang Ting Chen, Fang Chi Hsu, Cheng Hung Li, Chia Chun Chen, Yang Fang Chen

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Abstract

We demonstrate a facile annealing method to improve the polymer chain ordering of poly(3-hexythiophene) (P3HT):fullerene blend triggered by a small amount of FePt nanowires (FePt NWs). By applying a magnetic field perpendicular to the substrate during the solvent drying process, the resulting P3HT:fullerene:FePt NWs film becomes highly optical anisotropy and exhibits a much stronger X-ray diffraction intensity of P3HT. We hypothesize that the coupling force between the FePt NWs and P3HT can assist the polymer chain alignment leading to an improved device performance. The proposed approach is simple and can be applied to other polymer blend systems as well.

Original languageEnglish
Article number253305
JournalApplied Physics Letters
Volume103
Issue number25
DOIs
Publication statusPublished - 2013 Dec 16

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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