Electron field emission from semiconducting nanowires

Chemical vapor deposition and atomic layer deposition for advanced lithium ion batteries and supercapacitors

“…152 In another example of CVD deposition of Si on the surface of a thick (1 mm) CNT forest grown by CVD, the authors demonstrated B10 times higher electrode capacity loading and electrical and thermal conductivities that were several orders of magnitude higher compared to electrodes traditionally prepared (by slurry casting). 153 CVD-grown Si and Ge nanowires or their alloys with other materials are often produced for fundamental studies of various electrochemical processes 154,155 and were initially considered for use in Li-ion battery anodes. 148 Gold (Au) is the most commonly used catalyst, but other catalysts such as Pt-Au, gallium (Ga), 157 Ti, 158 Al 159 and Ni, 160 as well as autocatalytic growth, have also been explored.…”

Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism

“…Decorated ZnO materials are promising candidates as conductors with the absorption of visible light being enhanced and the combination of photogenerated electron-holes being suppressed [23,24]. Recently, varieties of metal-doped or decorated semiconductor compounds nanostructures morphologies [5,[25][26][27][28][29][30][31], such as nanowires, nanotubes, nanorods, nanoflowers, nanorings, nanobelts, nanosheets, nanowalls, nanograsses, and heterostructures, have been successfully synthesized using multiple methods, including chemical vapor deposition (CVD) [32,33], screen printing technologies [34,35], hydrothermal method [36,37], hydrothermal and chemical method [38], the thermal evaporation process [39], thermal evaporation method [40], and a template-free single-step hydrothermal method [41]. However, CVD and magnetron sputtering (MS) methods are very common methods for growth of nanomaterial with different morphologies.…”

Uniform ZnO nanowire arrays: Hydrothermal synthesis, formation mechanism and field emission performance

“…Among various applications, field emission have great prospects owing to its applications in a wide range of field emission (FE) devices such as flat panel displays [8], X-ray sources [9], cold cathode microwave amplifier. Especially, 1D wide band gap nanomaterials including carbon [10], AlN [11], SiC [12], and ZnO [12,13], have been widely studied as promising candidates for FE applications due to their high aspect ratios, high mechanical stability, and physical characteristic, among which the electron field emission from ZnO has attracted more attention due to its better controllable morphology, chemical stability and structural rigidity as compared to carbon nanotubes. Therefore, ZnO nanomaterials have attracted much attention in FE performances.…”