Research Article
Origin of Ferromagnetism in Ru and N Codoped TiO2 Nanotubes: Experiments and Theory Investigations
Figure 3
PL emission spectra of undoped TiO2, Ru doped TiO2, N doped TiO2, and Ru-N codoped TiO2 (a) at 300 K and (b) at 250 K.
(a) |
(b) |