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首页> 外文期刊>Journal of Micromechanics and Microengineering >Optimum reactive ion etching of x-cut quartz using SF_6 and Ar
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Optimum reactive ion etching of x-cut quartz using SF_6 and Ar

机译:使用SF_6和Ar对x切割石英进行最佳反应性离子刻蚀

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In this paper we investigate the effect of Ar concentration and shadow mask material on the etch rate, surface roughness, and micromask pit density and depth for reactive ion etching (RIE) of x-cut alpha quartz. The ratio of SF_6 to Ar is varied at constant power and pressure to find an optimum Ar concentration for thinning x-cut quartz while maintaining good surface quality. The recipe is used with an STS320 RIE system to produce smooth, through-hole-free, insulating quartz membranes of 7 μm thickness in selective locations on 100 μm thick x-cut quartz wafers. We demonstrate that surface quality is much improved by replacing at least 75% of the SF_6 by volume with Ar, and that for non-inductively coupled plasma RIE the standard mask material nickel is detrimental to surface quality for long etch times.
机译:在本文中,我们研究了Ar浓度和荫罩材料对x切割alpha石英的反应离子蚀刻(RIE)的蚀刻速率,表面粗糙度以及微孔密度和深度的影响。 SF_6与Ar的比例在恒定功率和压力下变化,以找到最佳的Ar浓度,以稀薄x切石英,同时保持良好的表面质量。该配方与STS320 RIE系统一起使用,可在100μm厚的X切石英晶片上的特定位置生产厚度7μm的光滑,无通孔的绝缘石英膜。我们证明,通过用Ar代替体积至少75%的SF_6可以大大改善表面质量,并且对于非电感耦合等离子体RIE,标准的掩模材料镍对于长时间的刻蚀不利于表面质量。

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