Abstract
Polymer solar cells have attracted world attention due to their great potential for new energy strategy. Solar cells based on bulk heterojunction of conjugated polymers and fullerene derivatives exhibit the best device performance up till today. However, excitons generation and dissociation processes in bulk heterojunction systems remain great challenges. Here, large-area, well-defined nanotubes of regioregular poly(3-hexylthiophene) and fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester were prepared facilely. And photovoltaic effect of individual nanotube was examined carefully. The high energy conversion efficiency provided tips of understanding excitons generation and dissociation processes at nanometer scale in the bulk heterojunction system.
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