Large-Area Single Wall Carbon Nanotubes:  Synthesis, Characterization, and Electron Field Emission

Abstract

Large-area, high-uniformity, and high-density single wall carbon nanotubes (SWNTs) were fabricated by ethanol at 900°C in a tubular furnace. The Fe(NO 3 ) 3 ‚9H 2 O and the ICP/DCP standard solution of Mo were reacted to deposit SWNTs on the surface of the MgO sol-gel nanopowders. SWNTs have diameters in the range of 0.6-1.6 for SWNTs in bundles, and diameters in the range of 2-6 nm for isolated SWNTs were identified by the high-resolution transmission electron microscope and the breathing mode of the Raman spectrrum. A high yield of the as-synthesized SWNTs is over 500 wt % relative to the Fe-Mo metal in the catalyst. The extremely low turn-on field E to ) 0.008 V/µm and threshold field E thr ) 0.07 V/µm show that the SWNTs have an excellent performance on the electron field emission.

Inorganic semiconductor nanostructures and their field-emission applications

“…35 Therefore, a fair amount of recent literature and reviews has dealt with CNTs and their field-emission applications. [46][47][48] However, we are not discussing CNTs here. Instead, we provide a comprehensive review on the state-of-the-art research that focuses on several kinds of inorganic semiconductor nanostructures, such as ZnO, ZnS, Si, WO 3 , AlN, SiC, and their corresponding field-emission applications in detail, and briefly discuss some other inorganic semiconductors.…”

Asymmetric tungsten oxide nanobrushes via oriented attachment and Ostwald ripening

“…49 Amongst various nanostructures, field emission properties of carbon nanotubes and ZnO have been most widely investigated. 33,50 WO 3 , also known as tungstic anhydride, is unique because its composition can be tuned with respect to oxygen content by performing their synthesis under reducing or oxidizing conditions. However, despite comparable electronic properties, stability and work with ZnO, their FE properties have not been studied at length so far.…”

Study of J-E Curve with Hysteresis of Carbon Nanotubes Field Emitters

“…CNTs as electron field emitter source in various fields have been widely studied such as cold cathodes for field emission displays (FEDs) [5], scanning probe for atomic force microscope (AFM) [6], electron source for vacuum microelectronics (VME), X-ray source for computed tomography (CT) scanners. CNT-based vacuum microelectronic and display devices have also been already proposed [7][8][9][10][11][12][13][14].…”