title: Influence of Y-doped induced defects on the optical and magnetic properties of ZnO nanorod arrays prepared by low-temperature hydrothermal process.
abstract: One-dimensional pure zinc oxide (ZnO) and Y-doped ZnO nanorod arrays have been successfully fabricated on the silicon substrate for comparison by a simple hydrothermal process at the low temperature of 90°C. The Y-doped nanorods exhibit the same c-axis-oriented wurtzite hexagonal structure as pure ZnO nanorods. Based on the results of photoluminescence, an enhancement of defect-induced green-yellow visible emission is observed for the Y-doped ZnO nanorods. The decrease of E2(H) mode intensity and increase of E1(LO) mode intensity examined by the Raman spectrum also indicate the increase of defects for the Y-doped ZnO nanorods. As compared to pure ZnO nanorods, Y-doped ZnO nanorods show a remarked increase of saturation magnetization. The combination of visible photoluminescence and ferromagnetism measurement results indicates the increase of oxygen defects due to the Y doping which plays a crucial role in the optical and magnetic performances of the ZnO nanorods.
authors: Department of Electrical Engineering, National Chung Hsing University, Taichung, 40227, Taiwan. cykung@dragon.nchu.edu.tw.
authors: Chung-Yuan
authors: CY
authors: Kung
authors: San-Lin
authors: SL
authors: Young
authors: Hone-Zern
authors: HZ
authors: Chen
authors: Ming-Cheng
authors: MC
authors: Kao
authors: Lance
authors: L
authors: Horng
authors: Yu-Tai
authors: YT
authors: Shih
authors: Chen-Cheng
authors: CC
authors: Lin
authors: Teng-Tsai
authors: TT
authors: Lin
authors: Chung-Jen
authors: CJ
authors: Ou