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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: The Fabrication of Ordered Bulk Heterojunction Solar Cell by Nanoimprinting Lithography Method Using Patterned Silk Fibroin Mold at Room Temperature

Fig. 3

The top-down SEM images of template, P3HT film, and PCBM film surface. a The top-down SEM image of patterned silk fibroin template surface, scale bar = 500 nm; b the top-down SEM image of P3HT nanograting film surface fabricated by silk fibroin template (a), scale bar = 500 nm; c the top-down SEM image of PCBM surface deposited on the top of P3HT nanograting film, scale bar = 150 nm

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