標題: Excellent piezoelectric and electrical properties of lithium-doped ZnO nanowires for nanogenerator applications
作者: Chang, Yu-Tsui
Chen, Jul-Yuan
Yang, Tzu-Ping
Huang, Chun-Wei
Chiu, Chung-Hua
Yeh, Ping-Hung
Wu, Wen-Wei
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: ZnO;Lithium-doped;Piezoelectric property;Hydrothermal method;Magnetization
公開日期: 1-Sep-2014
摘要: The well-aligned Li-doped zinc oxide nanowires (ZnO NWs) were successfully grown on Si substrates with seed layer by the hydrothermal method. The presence of Li in ZnO NWs is confirmed through EELS spectrum analysis. The acceptor energy level of the Li dopant is estimated to be 93.6 meV from the temperature-dependent PL spectra. From the SQUID measurements, the coercivity and saturation magnetization of the Li-doped ZnO NWs at room temperature are found to be 166 Oe and 9.64 memu/g, respectively. Additionally, the Li-doped ZnO NWFET confirms that the NWs were p-type with a high carrier mobility of 14.59 cm(2/)V s and an effective hole carrier concentration of 1.13 x 10(17) CM-3. The piezoelectric response of the Li-doped ZnO NWs produces much higher piezoelectric output current, voltage, and power than pure ZnO NWs. These results indicated that p-type ZnO NWs are a promising candidate for nanogenerator devices. (C) 2014 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.nanoen.2014.06.014
http://hdl.handle.net/11536/25028
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2014.06.014
期刊: NANO ENERGY
Volume: 8
Issue: 
起始頁: 291
結束頁: 296
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