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首页> 外文期刊>Electrochemical and solid-state letters >Low Alkaline Contamination Bilayer Bottom Antireflective Coatings in F_2 Excimer Laser Lithography
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Low Alkaline Contamination Bilayer Bottom Antireflective Coatings in F_2 Excimer Laser Lithography

机译:F_2准分子激光平版印刷中的低碱性污染双层底层抗反射涂层

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摘要

A bilayer bottom antireflective coating (BARC) structure composed of tetraethoxysilane (TEOS) oxide and silicon nitride film stacks is demonstrated for F_2 excimer laser (157 nm) lithography. The top TEOS oxide film is an NH_3 contaminant-free material that can be used as an NH_3 capping layer. After an oxygen plasma treatment, the bilayer structure is shown to have high thermal stability by thermal desorption spectrometry. The measured swing effect is significantly reduced by adding the bilayer BARC structure. This BARC structure could also reduce the reflectance of various highly reflective substrates to less than 2 percent at 157 nm.
机译:由F_2受激准分子激光(157 nm)光刻演示了由四乙氧基硅烷(TEOS)氧化物和氮化硅薄膜叠层组成的双层底部抗反射涂层(BARC)结构。顶部的TEOS氧化膜是可用作NH_3覆盖层的无NH_3污染物的材料。在氧等离子体处理之后,通过热解吸光谱法显示双层结构具有高的热稳定性。通过添加双层BARC结构,可以显着降低测得的摆动效果。这种BARC结构还可以将各种高反射性基材在157 nm处的反射率降低到小于2%。

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