标题: | ZnO nanowires hydrothermally grown on PET polymer substrates and their characteristics |
作者: | Lee, CY Li, SY Lin, P Tseng, TY 材料科学与工程学系 电子工程学系及电子研究所 Department of Materials Science and Engineering Department of Electronics Engineering and Institute of Electronics |
关键字: | ZnO;nanowires;polymer substrate;hydrothermal method;photoluminescence;field emission |
公开日期: | 1-七月-2005 |
摘要: | Zinc oxide nanowires (ZnO NWs) were successfully synthesized on the]TO/PET polymer substrates by a hydrothermal method. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy investigations were carried out to characterize the crystallinity, surface morphologies, and orientations of these NWs, respectively, The influence of NW surface morphologies on the optical and electrical properties of ZnO NWs was studied, The hydrothermally grown ZnO NWs with direct band gap of 3.21 eV emitted ultraviolet photoluminescence of 406 nm at room temperature. Field emission measurements revealed that the threshold electric fields (E-th, current density of 1 mA/cm(2)) of ZnO NWs/ITO/PET and ZnO NWs/ZnO/ITO/PET are 1.6 and 2,2 V/mu m with the enhancement factors, beta values, of 3275 and 4502, respectively. Furthermore, the field emission performance of ZnO NWs deposited on the ITO/PET substrate can be enhanced by illumination with E-th of 1.3 V/mu m and displays a maximum emission current density of 18 mA/cm(2). The ZnO NWs successfully grown on polymer substrate with high transmittance, low threshold electric field, and high emission current density may be applied to a flexible field emission display in the future. |
URI: | http://dx.doi.org/10.1166/jnn.2005.164 http://hdl.handle.net/11536/13515 |
ISSN: | 1533-4880 |
DOI: | 10.1166/jnn.2005.164 |
期刊: | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY |
Volume: | 5 |
Issue: | 7 |
起始页: | 1088 |
结束页: | 1094 |
显示于类别: | Articles |