Fig. 2From: Bi5FeTi3O15 nanofibers/graphene nanocomposites as an effective counter electrode for dye-sensitized solar cells a Representative SEM images of unsintered nanofibers. b Gives the diameter of BFTO nanofibers after calculation. c–e SEM images of the BFTO, Gr, and typical BGr films as CEs. f Typical TEM micrograph of BGr. g, h HRTEM images of BFTO and Gr. i SAED patterns of BGrBack to article page