Bulk Heterojunction Solar Cells from Poly(3-butylthiophene)/Fullerene Blends: In Situ Self-Assembly of Nanowires, Morphology, Charge Transport, and Photovoltaic Properties

These results demonstrate that in situ self-assembly of polymer semiconductor nanowires as active blend component is a promising approach to the rational control of the film morphology of bulk heterojunction solar cells

Hao Xin; Guoqiang Ren; Felix Sunjoo Kim; Samson A. Jenekhe

2008

Scholarcy highlights

  • The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online
  • Bulk heterojunction solar cells based on blends of regioregular poly(3-butylthiophene) and phenyl-C61-butyric acid methyl ester were created by in situ self-assembly of P3BT nanowires and the morphology and photovoltaic properties were investigated as a function of the blend composition
  • Transmission electron microscopy imaging of the blends revealed an interconnected network of P3BT nanowires of 11−15 nm width and 5−10 μm length and an amorphous continuous PC61BM phase
  • The hole mobilities in the P3BT nanowire/PC61BM blends measured by space-charge limited current and field-effect transistors were on the order of 1 × 10−3 cm2/V s and a linear dependence of current density on light intensity was observed in the blend solar cells
  • These results demonstrate that in situ self-assembly of polymer semiconductor nanowires as active blend component is a promising approach to the rational control of the film morphology of bulk heterojunction solar cells

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