硼扩散碳化硅表面氧化硼的化学清洗及机械抛光
首发时间:2020-05-21
摘要:采用蒸发溶剂法在碳化硅样品表面均匀涂覆一层氧化硼,然后在650℃(30min)-1250℃(60min)-1450℃(30min)阶梯温度条件下,在氧气氛围中对碳化硅进行硼扩散处理。由金相显微镜照片观察可见,高温扩散处理后在碳化硅表面存在一层玻璃化的氧化硼层。采用常规BOE或HF溶液化学清洗后样品表面仍有残留。需采用机械抛光的方法对表面做进一步处理。金相显微镜照片显示,处理后样品表面的残留物被去除。
关键词: 微电子学与固体电子学 碳化硅 硼扩散 机械抛光 表面处理
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Chemical cleaning and mechanical polishing of boron oxide on the surface of SiC after boron diffusion
Abstract:A layer of boron oxide was uniformly coated on the surface of silicon carbide by evaporation solvent method, and then boron diffusion treatment of silicon carbide was carried out in oxygen atmosphere at the step temperature of 650 ℃ (30min)-1250 ℃ (60min)-1450 ℃ (30min). From the metallographic microscope photos, it can be seen that there is a vitrified boron oxide layer on the surface of silicon carbide after high temperature diffusion treatment. There are still residues on the surface of the sample after chemical cleaning with conventional BOE or HF solution. The surface needs to be further treated by mechanical polishing. The metallographic microscope photos show that the residue on the treated sample surface is removed.
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硼扩散碳化硅表面氧化硼的化学清洗及机械抛光
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