共查询到19条相似文献,搜索用时 31 毫秒
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硅烷气体分别和氮气、氧化亚氮(N_2O)通过射频电场产生辉光放电等离子体,以此增强化学反应降低淀积温度,在常温至350℃的条件下淀积了氮化硅和二氧化硅。 本文给出了在不同射频功率,淀积温度和硅烷气浓度条件下所得的淀积速率,薄膜腐蚀速率、折射率等主要实验数据以及红外透射光谱、俄歇电子能谱分析结果。 相似文献
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本文介绍了一种生长磷硅玻璃(PSG)的新方法,即等离子体化学汽相淀积(PCVD),给出了一些基本试验数据,并与一般采用的常规CVD工艺作了对比. 相似文献
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在减压和等离子体辉光放电情况下,使用SiCl_4,在700℃以下发现外延层不按衬底取向淀积,而强烈的按[110]晶向有序生长。认为分子自由路程可以影响生长活化能,减压和使用分子直径小的载气可以降低外延温度。由于SiCl_4和SiH_4反应机构不同,SiCl_4易于有序生长。 相似文献
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本文介绍在电容耦合射频放电中用碳氢化合物、如CH_4、C_2H_4及C_6H_6来制备硬碳膜。这种硬碳膜呈电绝缘(电阻率为10~(12)Ωcm),透红外,很硬(克氏硬度为1400kp/mm~2),折射率为1.8~2.0,可淀积于玻璃、石英、硅、锗、SiC、GaAs、Gd_3Ga_5O_(12)上,淀积速率很高(1000/min)。锗衬底上的这种单层膜在10.6μm处的反射小于0.2%。 相似文献
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文章介绍制备光化学气相淀积氮化硅薄膜的原理、设备及实验结果。 相似文献
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Z. H. Ye W. D. Hu W. T. Yin J. Huang C. Lin X. N. Hu R. J. Ding X. S. Chen W. Lu L. He 《Journal of Electronic Materials》2011,40(8):1642-1646
A novel mask technique utilizing patterned silicon dioxide films has been exploited to perform mesa etching for device delineation
and electrical isolation of HgCdTe third-generation infrared focal-plane arrays (IRFPAs). High-density silicon dioxide films
were deposited at temperature of 80°C, and a procedure for patterning and etching of HgCdTe was developed by standard photolithography
and wet chemical etching. Scanning electron microscopy (SEM) showed that the surfaces of inductively coupled plasma (ICP)
etched samples were quite clean and smooth. Root-mean-square (RMS) roughness characterized by atomic force microscopy (AFM)
was less than 1.5 nm. The etching selectivity between a silicon dioxide film and HgCdTe in the samples masked with patterned
silicon dioxide films was greater than 30:1. These results show that the new masking technique is readily available and promising
for HgCdTe mesa etching. 相似文献
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DA Xiao-li XU Chen GUAN Bao-lu SHEN Guang-di 《半导体光子学与技术》2007,13(2):141-145
SiN, films are deposited on silicon wafers through plasma enhanced chemical vapor deposition (PECVD). The relationship between the film stress and deposition factors is investigated. It is found that low stress films would be obtained by adjusting the ratio of low frequency(LF) power to high frequency(HF) power pulse time or the chamber pressure. The best of the two methods to control stress in the film is changing the percentage of LF power pulse time. The low stress condition is achieved when the percentage of low frequency power pulse time in total time(LF and HF pulse time) is close to 40%, The low stress cantilever of tunable vertical cavity surface emitting laser is obtained by using this deposition condition, 相似文献
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衬底温度对直接光CVD SiO2薄膜特性的影响 总被引:2,自引:2,他引:0
采用以低压氙(Xe)气激发真空紫外光作光源,以SiH4和O2作反应气体的直接光CVD技术淀积SiO2薄膜.通过椭圆偏振法、红外光谱法、C-V特性法对不同衬底温度下淀积的SiO2薄膜的特性进行研究.结果表明: 衬底温度在40~200℃范围内,薄膜的折射率在1.40~1.46之间,在沉积膜的红外光谱中未出现与Si-H、Si-OH相对应的红外吸收峰.SiO2薄膜中固定氧化物电荷密度受衬底温度影响较大,其最小值可达1.73×1010cm-2. 相似文献
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The planar process also made it easy to interconnect neighboring transistors on a wafer, paving the way to another Fairchild achievement: the first commercial integrated circuits. As other companies realized the great advantages of planar technology and began adopting it on their own production lines, Hoerni's elegant idea helped to establish Silicon Valley as the microelectronics epicenter of the world. 相似文献
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用高频感应石墨条作为红外辐射热源,对淀积在二氧化硅衬底上的多晶硅进行了区熔再结晶.再结晶后硅膜晶粒宽度可达几百微米甚至几毫米以上,长度可在区熔扫描方向延伸到样品尺度.在晶粒中存在大量间隔约10-50μm的亚晶界.采用热沉技术及多晶硅膜厚调制技术对亚晶界进行了定域限制,达到了非常好的效果.TEM分析表明再结晶后硅膜呈[100]晶向.SEM观察表明再结晶后样品具有平整的表面及界面.Raman谱测量表明区熔再结晶后硅膜中张应力很小,约为0.9×10~9 dyne/cm~2. 相似文献
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