Polymer Nanowire/Fullerene Bulk Heterojunction Solar Cells: How Nanostructure Determines Photovoltaic Properties

We report studies of bulk heterojunction solar cells composed of self-assembled poly(3-butylthiophene) nanowires as the donor component with a fullerene acceptor

Hao Xin; Obadiah G. Reid; Guoqiang Ren; Felix Sunjoo Kim; David S. Ginger; Samson A. Jenekhe

2010

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  • We report studies of bulk heterojunction solar cells composed of self-assembled poly(3-butylthiophene) nanowires as the donor component with a fullerene acceptor
  • Films with a dense random web of nanowires cause the fullerene to aggregate in the interstices, giving a quasi-ordered interpenetrating heterojunction with high short-circuit current density, but relatively low open circuit voltage
  • Films with a low density of nanowires result in a random bulk heterojunction composed of small crystalline PCBM and P3BT phases
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