Figure 1From: A maskless synthesis of TiO2-nanofiber-based hierarchical structures for solid-state dye-sensitized solar cells with improved performanceImages and XRD spectra of TiO 2 nanofibers. FESEM images of the calcined TiO2 nanofibers on FTO substrate (a) low magnification and (b) high magnification. (c) XRD spectra of as-spun nanofibers and calcined nanofibers (NF). Blue solid squares denote anatase phase. (d) TEM image of the as-spun nanofibers.Back to article page