Research Article
Bandgap Engineering in ZnO By Doping with 3d Transition Metal Ions
Figure 4
Diffuse Reflectance Spectrum of (a) bulk undoped ZnO in comparison with Zn0.95TM0.05O (TM = Cr, Mn, Fe, Co, & Ni) samples and ((b–f)) bulk Zn0.95TM0.05O (TM = Cr, Mn, Fe, Co, & Ni) samples.