Analysis of Raman modes in Mn-doped ZnO nanocrystals

Shuxia Guo; Zuliang Du; Shuxi Dai

doi:10.1002/pssb.200945192

Analysis of Raman modes in Mn-doped ZnO nanocrystals

Materials Science 2010-09-16 v1 Mesoscale and Nanoscale Physics

Authors: Shuxia Guo , Zuliang Du , Shuxi Dai

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Abstract

Mn-doped ZnO was synthesized using a co-precipitation technique. X-ray diffraction (XRD) measurements and photoluminescence (PL) spectra show that Mn ions are doped into the lattice positions of ZnO. The modes at 202, 330, and 437 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 vibrational mode related to Mn. The mode at 580 cm-1 should be an intrinsic mode of ZnO and assigned to E1 longitudinal optical (LO). Its reinforcement should result from a combination of resonance at the excitation wavelength and impurity-induced scattering.

Keywords

Mn-doped ZnO Raman modes nanocrystals local vibrational mode X-ray diffraction photoluminescence

Cite

@article{arxiv.1009.2870,
  title  = {Analysis of Raman modes in Mn-doped ZnO nanocrystals},
  author = {Shuxia Guo and Zuliang Du and Shuxi Dai},
  journal= {arXiv preprint arXiv:1009.2870},
  year   = {2010}
}

Comments

4 pages, 4 figures

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