Electrical resistivity, structure and composition of dc sputtered WNx films

被引:40
作者
Boukhris, L [1 ]
Poitevin, JM [1 ]
机构
[1] Inst Mat Nantes, Lab Plasmas & Couches Minces, Unite Mixte Rech CNRS 10, F-44322 Nantes 03, France
关键词
sputtering; WNx; XRD;
D O I
10.1016/S0040-6090(97)00348-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
WNx films have been deposited by reactive d.c. diode sputtering in an Ar-N-2 gas mixture on Si substrates. The electrical resistivity, structure. microstructure and composition of the films were investigated. The parameters were the total and partial pressures, the discharge current and the negative bias voltage applied to the substrate. We have found that good W2N films are obtainable with a dense structure and a resistivity of near 200 mu Omega cm, but either the resistivity or the composition and structure suffer great variations with the discharge parameters. Defending on the nitrogen partial pressure and the bias voltage, the deposited layers are W2N films, W2N-W mixtures or W films. (C) 1997 Elsevier Science S.A.
引用
收藏
页码:222 / 227
页数:6
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