Zinc oxide （ZnO） nanopillars on a ZnO seed layer and ZnO nanoflowers were synthesized by electrochemical deposition on linear wires. The morphologies and crystal orientation of the ZnO nanostructures were investigat...Zinc oxide （ZnO） nanopillars on a ZnO seed layer and ZnO nanoflowers were synthesized by electrochemical deposition on linear wires. The morphologies and crystal orientation of the ZnO nanostructures were investigated by a scanning electron microscopy and an X-ray diffraction pattern, respectively. Detailed study on the field-emission properties of ZnO nanostructures indicates that nanopillars with a high aspect ratio show good performance with a low turn-on field of 0.16 V/#m and a high field enhancement factor of 2.86 x 104. A luminescent tube with ZnO nanopillars on a linear wire cathode and a transparent anode could reach a luminance of about 1.5 x l04 cd/m2 under an applied voltage of 4 kV.展开更多
基金Project supported by the National High Technology Research and Development Program of China(No.2008AA03A313)the National Natural Science Foundation of China(No.61106053)the State Key Laboratory of Electronic Thin Films and Integrated Devices, China(No.KFJJ200916)
文摘Zinc oxide （ZnO） nanopillars on a ZnO seed layer and ZnO nanoflowers were synthesized by electrochemical deposition on linear wires. The morphologies and crystal orientation of the ZnO nanostructures were investigated by a scanning electron microscopy and an X-ray diffraction pattern, respectively. Detailed study on the field-emission properties of ZnO nanostructures indicates that nanopillars with a high aspect ratio show good performance with a low turn-on field of 0.16 V/#m and a high field enhancement factor of 2.86 x 104. A luminescent tube with ZnO nanopillars on a linear wire cathode and a transparent anode could reach a luminance of about 1.5 x l04 cd/m2 under an applied voltage of 4 kV.
