National Changhua University of Education Institutional Repository : Item 987654321/15446
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題名: Structural Dependence of Photoluminescence and Room-Temperature Ferromagnetism in Lightly Cu-Doped ZnO Nanorods
作者: Lin, C. C.;Young, S. L.;Kung, C. Y.;Chen, H. Z.;Kao, M. C.;Horng, Lance;Shih, Y. T.
貢獻者: 物理學系
關鍵詞: Nanostructure;Photoluminescence;Saturation magnetization
日期: 2011-10
上傳時間: 2013-02-05T02:20:43Z
出版者: IEEE
摘要: Well-defined 1-D ZnO and ZnO:Cu semiconductor nanostructures have been fabricated by a low temperature solution process. Cu (0.073 nm) is chosen as a dopant due to the similar ionic radius with Zn (0.074 nm). The radius of ZnO:Cu nanorods observed by FE-SEM is lager than that of pure ZnO which indicates the growth rate of the nanorods can be obviously enhanced by the light doping of Cu. The XRD patterns of both compositions with single diffraction peak (002) show the same wurtzite hexagonal structure. Photoluminescence spectra show a red-shift of the UV emission peak position and a decrease of the luminescence intensity in green-yellow region. From the room temperature hysteresis loop, ferromagnetism is observed and the saturation magnetization decreases with the increase of the Cu concentration for ZnO:Cu nanorods.
關聯: IEEE Trans. on Magnetics, 47(10): 3366-3368
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