Deposition of nanocrystalline translucent h-BN films by chemical vapor deposition at high temperature

被引:16
|
作者
Younes, Ghassan [2 ]
Ferro, Gabriel [1 ]
Soueidan, Maher [3 ,4 ]
Brioude, Arnaud [1 ]
Souliere, Veronique [1 ]
Cauwet, Francois [1 ]
机构
[1] Univ Lyon 1, Lab Multimat & Interfaces, UMR 5615, FR-69622 Villeurbanne, France
[2] Beirut Arab Univ, Fac Sci, Dept Chem, Beirut, Lebanon
[3] Lebanese Atom Energy Commissioncph CNRS, Beirut 11072260, Lebanon
[4] Univ Lyon, INSA Lyon, AMPERE UMR 5005, F-69621 Villeurbanne, France
关键词
Boron nitride; Chemical vapor deposition; High temperature; Translucent coatings; Nano-crystallinity; Silicon carbide; Sapphire; BORON-NITRIDE FILMS; THICK-FILM; CRYSTALS;
D O I
10.1016/j.tsf.2011.09.082
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
h-BN layers were deposited on alpha-SiC and sapphire substrates by chemical vapor deposition at high temperature (1500-1900 degrees C) using B2H6 and NH3 diluted in Ar. Growth rates were in the 6-10 mu m/h range. In all the conditions studied, the as deposited BN layers were found to be translucent to light, some having a light whitish aspect and other a more yellowish one. It was also observed that the deposit was not always adhesive. Characterizations showed that the layers were nano-crystalline with crystallite size <10 nm. The growth rate was found to be temperature and N/B ratio dependent due to an N limited growth regime which is more pronounced above 1700 degrees C. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:2424 / 2428
页数:5
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