Mn-doped ZnO was synthesized using a co-precipitationtechnique. X-ray diffraction (XRD) measurements andphotoluminescence (PL) spectra show that Mn ions are dopedinto the lattice positions of ZnO. The modes at 202, 330, and437 cm-1 in the Raman spectrum are assigned as 2E2 (low), E2(high)-E2 (low), and E2 (high) modes of ZnO base, respectively.The mode at 528 cm-1 is ascribed to a local vibrationalmode related to Mn. The mode at 580 cm-1 should be anintrinsic mode of ZnO and assigned to E, longitudinal optical(LO). Its reinforcement should result from a combination ofresonance at the excitation wavelength and impurity-inducedscattering.
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