Figure 3From: Improvement in the photoelectrochemical responses of PCBM/TiO2 electrode by electron irradiationDiffuse reflectance UV-VIS spectra. (a) TiO2 and (b) PCBM/TiO2. PCBM/TiO2 irradiated at (c) 3.6 × 1016, (d) 7.2 × 1016, and (e) 1.44 × 1017 cm-2.Back to article page