Diamond synthesis with a DC plasma jet: control of the substrate temperature

Influence of Ar/C2H2 ratio on the structure of hydrogenated carbon films

“…According to this, the longer distance will lower the plasma jet temperature and velocity. Other authors [14,20,26] also found that the growth rate of the coatings decreases by decreasing the substrate temperature.…”

“…Zhou et al [25] presumed that C 2 H x is helpful to the growth of (1 1 1) crystalline surface, while CH y to that of non (1 1 1) surface. Breiter et al [26] observed that the grain size and deposition rate increase with the substrate temperature. Huang et al [19] found that the increase of the argon-to-hydrogen ratio stipulated the same effect.…”

“…Benedikt et al [22,23] determined that the variation of acetylene gas flow in the argon plasma stipulated different growth species; due to which a-C:H film properties could be controlled. Most of the authors agree that the content of hydrocarbon gases in plasma, the power of the arc, the pressure, the plasma velocity and temperature influence the composition and densities of various species in plasma jet and as a consequence the properties of carbon film [14][15][16][17][18][19][20][21][22][23][24][25][26]. However, most of the research of these scientists was focused on the films deposited from CH 4 gas, while there is a lack of information about the structure and properties of carbon films formed from the acetylene gas using PJCVD.…”

Geometric and electromagnetic characterization of electron beams produced by nanodiamond photocathodes

“…A NEA means that the vacuum level shifts beneath of conduction band minimum and therefore the electrons injected in the conduction band are emitted directly into the vacuum, enhancing the photoemission. The technology of diamond films is today based on chemical vapour deposition (CVD) methods [15][16][17][18][19], which work at high substrate temperatures (> 600 • C). In the last years, new techniques have been developed, to overcome the limit of the high deposition temperature and to allow different possibilities in terms of materials used as carbon sources.…”

Fabrication and thermal analysis of a copper/diamond/copper thermal spreading device

“…Microwave assisted plasma CVD or DC plasma jet systems [3], and hot filament CVD [4] allow diamond layers to be synthesized with high growth rates.…”