ZnO nanostructures grown by low temperature method

... possible cause of low doping concentration is the low solubility of the dopant in ZnO 1.1.3 Synthesis methods for ZnO nanostructures ZnO nanostructures have been fabricated by various methods Vapor ... 172 Figure 7-14 PL spectra of (a) ZnO nanotube arrays grown by ALD, (b) nanorod arrays grown by ECD, and (c) nanotube arrays grown by ECD and etching .173 17 Figur...

Ngày tải lên: 14/09/2015, 08:50

... Illustration of shape evolution of the bilayer nanodendrite—nanorod structure Conclusion In summary, nanoflower–nanorod structure, nanodendrite– nanorod structure and double nanorods layers structure ... that of sample A The higher ammonia content of sample B in initial solution could lead to the slight dissolution of the surface on the backbones of nanodendrite due to the...

Ngày tải lên: 06/05/2014, 13:24

... n- ZnO /p- ZnO MBE n- ZnO /p- ZnO MOCVD p- ZnO/ MgZnO /ZnO/ MgZnO/nZnO PLD Structure n- MgZnO /p- MgZnO n- ZnO /p- ZnO p- ZnO /n- ZnO substrate n- ZnO /p- ZnO p- ZnO /n- ZnO/ Si n- ZnO /p- ZNO/ GaAs substrate p- ZnO /n- ZnO /n- SiC ... p- ZnO/ MgZnO /ZnO: Ga/MgZnO/nZnO n- ZnO /n- Be0.3Zn0.7O/BeZnO -ZnO MQW /p- Be0.3Zn0.7O /p- ZnO Growth method...

Ngày tải lên: 09/09/2015, 10:14

... Visible emission from Ce-doped ZnO nanorods grown by hydrothermal method without a post thermal annealing process Yong-Il Jung1,2, Bum-Young Noh1,2, ... light-emitting Ce-doped ZnO NRs by hydrothermal method without a post thermal annealing process Experimental details Growth of undoped and Ce-doped ZnO NRs on Si (100) substrate The Ce-doped...

Ngày tải lên: 20/06/2014, 23:20

... ZnO film In this paper, a nondoped ZnO film and a nitrogen doped one are deposited by plasma-assisted metal-organic chemical vapor deposition (MOCVD) We have investigated their structural and optical ... of group theory imply the better crystal quality of nitrogen doped ZnO film In the Raman spectrum of nitrogen doped ZnO film, other peaks at 274, 508, 641.9, and 857 c...

Ngày tải lên: 05/03/2014, 21:20

... controls the molecular switching …………………………………………… 148 ⅹⅶ LIST OF ABBREVIATIONS 2D LT-STM Two- Dimensional Low Temperature Scanning Tunneling Microscopy STS Scanning Tunneling Spectroscopy MBE Molecular ... Field Ion Microscopy AFM Atomic Force Microscope SEM Scanning Electron Microscopy TEM Transmission Electron Microscopy NFSOM Near-Field Scanning Optical Mic...

Ngày tải lên: 11/09/2015, 09:58

... Fig – XPS Spectra of WO3 nanostructures: a) O1 s and b) W4 f axis with an inter-planar distance of 0.38 nm Raman, EDS and XPS analysis confirmed that the chemical structure and oxidation states ... procuring WO3 nanostructures is a modification of the method reported by Albiter et al for MoO3 nanorods [20] and Therese et al for WO3 nanostructures [18] The main d...

Ngày tải lên: 20/03/2014, 13:08

... sensitive to TMA at 50–85◦ C, but not sensitive to NH3 , gasoline, C2 H5 OH, CH4 and CO and water vapor These results indicate that the WO3 thin film sensor prepared by a sol–gel Fig X-ray photoelectron ... lie at 37.1 and 35.20 eV, respectively and are contributed to lattice tungsten in the WO3 crystal 3.2 Gas sensing properties of the thin film sensors Result...

Ngày tải lên: 20/03/2014, 13:12

... flowerlike ZnO nanostructures by combining laser direct writing and hydrothermal growth method The control of the as-fabricated ZnO flowerlike structures can be achieved by altering hydrothermal growth ... 100 °C for 10 2.2 Laser direct writing Micropatterning of the as-prepared substrate was conducted by a femtosecond laser system A commercial regenerative amplified...

Ngày tải lên: 06/05/2014, 13:22

Ngày tải lên: 18/05/2014, 20:33

... as -welded joint, welded joint spraying fused by conventional nickel base alloy powder (Conventional -joint) and welded joint spraying fused by low transformation temperature alloy powder (LTT -joint) ... welded joint spraying fused by conventional nickel base alloy powder (Conventionaljoint) Fig 12 is stress cloud chart of welded joint...

Ngày tải lên: 24/05/2014, 20:34

... Photoluminescence characteristics of Cd1-xMnxTe single crystals grown by the vertical Bridgman method Younghun Hwang1, Youngho Um*2, and Hyoyeol ... report a systematic investigation of band-edge photoluminescence for Cd1-xMnxTe crystals grown by the vertical Bridgman method The near-band-edge emissions of neutral acceptor-bound excitons ... crysta...

Ngày tải lên: 20/06/2014, 20:20

... micrographs of Pb(core)/ZnO(shell) nanowires (a) Low magnification FE-SEM micrographs of Pb(core)/ZnO(shell) nanowires obtained by the decomposition-assisted microwave synthesis of zinc ferrite (b) Nanowires ... 236:249-262 doi:10.1186/1556-276X-6-553 Cite this article as: Solis-Pomar et al.: Pb(core)/ZnO(shell) nanowires obtained by microwave-assisted method Nanoscale...

Ngày tải lên: 20/06/2014, 22:20

... of 3D changes produced by the atomic mobility To check a possible gold catalytic effect of the ZnO growth on gold, this was carried out for 2, and 10 nm thin gold thicknesses The morphology of ... hand, the ZnO structures grown on the 4-nm thickness gold are ‘XRD amorphous’ Conclusions In summary, experiments addressing a possible catalytic effect of gold on ZnO growth...

Ngày tải lên: 21/06/2014, 02:20

... composite target, a SiO2 (99.99%) plate partially covered by polycrystalline chips of Si and Ge, and a second target of pure SiO2 The surface ratio of the Si and Ge pieces in the SiO2 target was 2:1 ... narrow because of the self-ordering growth The annealing of those films caused the formation of crystalline Ge clusters with larger sizes Furthermore, the regular spatial...

Ngày tải lên: 21/06/2014, 04:20