Research / 2020 / Article / Fig 2

Research Article

Ultrathin Hematite Photoanode with Gradient Ti Doping

Figure 2

(a, b) SEM images of the surface of the PAD hematite film. The PAD film is composed of hematite nanoparticles with 30-60 nm in size. (c–f) Cross-section-viewed images of hematite electrode composed of 1-4-layered PAD films. The thicknesses are 30, 70, 100, and 125 nm, respectively.