共查询到20条相似文献,搜索用时 687 毫秒
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MEMS THz滤波器的制作工艺 总被引:2,自引:0,他引:2
基于MEMS技术制作了太赫兹(THz)滤波器样品,研究了制作滤波器的工艺流程方案,其关键工艺技术包括硅深槽刻蚀技术、深槽结构的表面金属化技术、阳极键合和金-硅共晶键合技术。采用4μm的热氧化硅层作刻蚀掩膜,成功完成了800μm的深槽硅干法刻蚀;采用基片倾斜放置、多次离子束溅射和电镀加厚的方法完成了深槽结构的表面金属化,内部金属层厚度为3~5μm;用硅-玻璃阳极键合技术和金-硅共晶键合技术实现了三层结构、四面封闭的波导滤波器样品加工。测试结果表明,研制的滤波器样品中心频率138GHz,带宽15GHz,插损小于3dB。 相似文献
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介绍电感耦合等离子刻蚀(ICP)技术的基本概念,并结合英国STS公司高密度反应离子刻蚀机的刻蚀机理及刻蚀过程,对硅深槽刻蚀技术进行分析和研究,总结出满足不同工艺要求的硅深槽刻蚀方案。 相似文献
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1μm宽硅深槽刻蚀技术 总被引:1,自引:1,他引:0
介绍了硅深槽刻蚀的基本原理和影响刻蚀效果的几个主要工艺因素。提出了一种实现1μm宽的硅深槽刻蚀工艺途径;并给出了1μm宽、8μm深、侧壁及底部光洁的硅深槽刻蚀工艺条件。 相似文献
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Beta phase Gallium trioxide (β-Ga2O3) thin film was grown by metal organic chemical vapor deposition technology. Mixture gases of SF6 and Ar were used for dry etching of β-Ga2O3 thin film by inductively coupled plasma (ICP). The effect of SF6/Ar (etching gas) ratio on etch rate and film etching damage was studied. The etching rate and surface roughness were measured using F20-UN thin film analyzer and atomic force microscopy showing that the etching rate in the range between 30 nm/min and 35 nm/min with an improved surface roughness was obtained when the reactive mixed gas of SF6/Ar was used. The analysis of X-ray diffraction and transmission spectra further confirmed the non-destructive crystal quality. This work demonstrates that the properly proportioned mixture gases of SF6/Ar is suitable for the dry etching of β-Ga2O3 thin film by ICP and can serve as a guide for future β-Ga2O3 device processing. 相似文献
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综合了 Ga As和 In P基 HFET工艺中的选择腐蚀技术的有关报道 ,重点介绍了应用 ICP设备和气体组合 BCl3+ SF6 进行异质结材料组合的干法腐蚀实验 ,腐蚀后在显微镜和扫描电镜下观察窗口平整干净、作迁移率测试等与湿法腐蚀的片子相比较没有看出差别 ,适宜用于器件工艺。 相似文献
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微电子机械系统中关键工艺之一就是刻蚀出高深宽比的图形。本文对掺磷多晶硅反应离子刻蚀(RIE)进行了研究,采用两步刻蚀工艺,SF6,CF4,Cl2CF三种气体组合,从原来45度的各向同性刻蚀提高到73度以上的各向异性蚀。射频功率390瓦时,刻蚀速率每分钟200nm。对3.5微米厚的多晶硅,刻蚀时间在20分钟左右,基本上达到要求。 相似文献
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Experimental verification of a low temperature (<20 °C), reactive plasma etch process for copper films is presented. The plasma etch process, proposed previously from a thermochemical analysis of the Cu-Cl-H system, is executed in two steps. In the first step, copper films are exposed to a Cl2 plasma to preferentially form CuCl2, which is volatilized as Cu3Cl3 by exposure to a H2 plasma in the second step. Plasma etching of thin films (9 nm) and thicker films (400 nm) of copper has been performed; chemical composition of sample surfaces before and after etching has been determined by X-ray photoelectron and flame atomic absorption spectroscopies. 相似文献
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利用光刻胶作刻蚀掩模对半导体样品进行感应耦合等离子体干法刻蚀时发现光刻胶掩模在刻蚀后表面出现凸起和孔洞等异常现象, 等离子体会透过部分孔洞对样品表面产生刻蚀损伤。利用探针式表面轮廓仪和激光共聚焦显微镜对这些异常现象进行了分析, 认为是刻蚀时等离子体气氛中的紫外线对作为掩模的光刻胶进行了曝光作用而释放出一定量的氮气, 从而在光刻胶内外形成了压强差而使光刻胶局部表面产生微凸起; 当光刻胶的强度无法阻止内部氮气的膨胀时, 则会发生类似爆炸的效果, 在光刻胶表面形成孔洞状缺陷, 导致掩模保护作用的失效。 相似文献
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蚀刻在PCB生产中应用和工艺控制 总被引:1,自引:0,他引:1
本文以实验的方法确定蚀刻速度与各参数的关系,控制蚀刻质量的精确度,减少蚀刻过程中侧蚀现象,并详细介绍喷琳蚀刻液在复杂三维曲面上制作精细图形的工艺过程,阐述了在工艺操作过程中应注意的诸多因素,制作精细线宽/间距精度达到2mil/2mil。 相似文献
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V. Srivastav R. Pal B. L. Sharma A. Naik D. S. Rawal V. Gopal H. P. Vyas 《Journal of Electronic Materials》2005,34(11):1440-1445
Mesa structures were etched in HgCdTe using different Br2/HBr/Ethylene glycol (EG) formulations. Etch rate and degree of anisotropy (A) were studied in detail for all of the combinations.
Addition of EG to the conventional etchant gave A>0.5, with controllable etch rates. Optimum etchant composition was determined
to be 2% Br2 in a 3:1 mixture of EG:HBr. This composition resulted in a good anisotropy factor of ∼0.6 and a reasonably optimum etch rate
of ∼2.5 μm/min, with rms surface roughness of ∼2 nm. Kinetics of the etching reaction have also been studied for the optimum
etchant concentration and an etching mechanism has been proposed. 相似文献
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R. T. Green W. S. Tan P. A. Houston T. Wang P. J. Parbrook 《Journal of Electronic Materials》2007,36(4):397-402
Dry etching of GaN-based devices can introduce damage onto exposed layers of the semiconductor. In this paper, electrode-less
wet etching of nominally undoped GaN is investigated in terms of light intensity, solution concentration, and mask geometry
in order to determine the conditions required to obtain smooth surface morphologies. Using the results, surfaces were etched
with a root-mean-squared (RMS) surface roughness of 1.7 nm. Furthermore, the etch selectivity is used to gain access to buried
p-type layers allowing n-p diodes to be fabricated. Contact resistances to the exposed p-type layers were found to be superior to those obtained by dry etching. 相似文献