JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | |
Facet-Selective Growth Rates of Doped Diamond Crystals Prepared by Microwave Plasma-Assisted Chemical Vapor Deposition | |
Akira Sobana2  Hirotomo Taniguchi2  Ken-Ichiro Sotowa2  Katsuki Kusakabe2  Toshiki Tsubota1  | |
[1] Material Development Department, Kumamoto Industrial Research Institute;Department of Applied Chemistry, Kyushu University | |
关键词: Diamond; Microwave Plasma; CVD; Epitaxial Growth; Doping; Facet; | |
DOI : 10.1252/jcej.35.996 | |
来源: Maruzen Company Ltd | |
【 摘 要 】
References(25)In order to produce a highly oriented diamond layer on a silicon (100) substrate, reaction conditions should be controlled so as to achieve an initial selective growth on the (111) face, followed by the (100) face. In the present study, cubo-octahedral diamond crystals were formed by the microwave plasma-assisted chemical vapor deposition of methane and hydrogen on a silicon (100) wafer. Trimethylboron and dimethylsulfur as the boron or sulfur sources, respectively, were added to the gas phase and diamond was homoepitaxially deposited on the {100} and {111} of the crystals. The growth rate determined from geometrical changes in the crystals, was affected by the type of diamond faces used, the boron to carbon (B/C) and sulfur to carbon (S/C) ratios in the gas phase, the methane concentration, and the substrate temperature. The growth rate decreased with increasing B/C and S/C ratios, but the relative growth rate of [100] to [111] remained nearly independent of the dopant concentration. The [111] preferred growth was realized under lower methane concentrations and higher substrate temperatures.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201912080695025ZK.pdf | 19KB | download |