期刊
SOLID STATE COMMUNICATIONS
卷 151, 期 17, 页码 1182-1187出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2011.04.028
关键词
ZnO nanorods; Mn doping; Impedance spectroscopy; X-ray photoelectron spectroscopy
资金
- Council of Scientific and Industrial Research (CSIR)
- University Grants Commission, Government of India
The frequency-dependent properties of Mn-doped (3-5 at.%) aligned zinc oxide (Mn-ZnO) nanorods, synthesized by hybrid wet chemical route onto glass substrates, were investigated by bias-dependent impedance spectroscopy. No peak of Mn cluster/secondary phases was detected in the X-ray diffraction traces of the samples. XPS studies show the presence of oxygen vacancies in Mn-ZnO nanorods and Mn in Mn2+ and Mn4+ charge states. Although X-ray diffraction/X-ray photoelectron spectroscopy does not give any indication of the presence of metal clusters in the samples, bias-dependent impedance spectroscopy demonstrates significant sensitivity to the formation of Mn clusters in Mn-ZnO nanorods. (C) 2011 Elsevier Ltd. All rights reserved.
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