Figure 1From: Photocurrent response and semiconductor characteristics of Ce-Ce2O3-CeO2-modified TiO2 nanotube arraysSEM images. Of (A) TNTs with inset cross section image, (B) TNTs-Ce, (C) TNTs-0.00025 C with inset cross section image, (D) TNTs-0.01 C, (E) and (F) corresponding EDX spectra of e and f in (C).Back to article page