270540.fig.004a
(a)
270540.fig.004b
(b)
270540.fig.004c
(c)
270540.fig.004d
(d)
270540.fig.004e
(e)
270540.fig.004f
(f)
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.