Electron field emission from amorphous carbon nitride nanotips

Carbon spheres for energy applications: Raman and X-ray photoemission spectroscopy studies

“…Spherical carbons have been prepared by various routes [17][18][19][20][21] such as chemical vapor deposition (CVD), arc discharge, laser ablation, autoclave processes, etc., and the different methods can produce quite different materials. The chemistry of the carbon material is also influenced by the N atoms since nitrogen is the best n-type dopant, due to its atomic size being similar to that of carbon [28]. While CSs are readily available (e.g.…”

“…NCSs) by the finding that the N-doped materials have found novel applications in energy-related topics, for example as catalyst supports, [18,19] electrodes for lithium secondary batteries [22,23], electric double layer capacitors (EDLCs) [24], dye-sensitized solar cells (DSSCs) [25][26][27], etc. The chemistry of the carbon material is also influenced by the N atoms since nitrogen is the best n-type dopant, due to its atomic size being similar to that of carbon [28]. The introduction of nitrogen into carbon materials is a useful method of altering their physical, chemical, mechanical and electronic properties.…”

The growth of nano-scale diamond tips on diamond/Si

“…First, the synthesis of diamond by plasma enhanced chemical vapor deposition (PECVD) is a high-temperature ($900 1C) process, at which temperature the synthesized diamond is always in the form of a film, rather than of nanotips. Second, a structure of nanotips can be successfully grown on various substrates, such as silicon, copper, and [10][11][12]. However, these nanotips consist of a great amount of sp 2 bonds, which should be treated as amorphous carbon nanotips rather than diamond ones.…”