高温氨预处理对单晶硅衬底上镍薄膜显微结构的影响Effect of thermal ammonia pretreatment on nanostructure of nickel thin films on single crystal silicon substrates
李刚,周明,马伟伟,蔡兰
摘要(Abstract):
采用K575X高分辨率溅射仪在单晶硅衬底上制备镍纳米催化剂薄膜。研究了高温氨气刻蚀对镍催化剂由连续薄膜转变成纳米颗粒的影响。探讨了预处理时间、温度和催化剂薄膜原始厚度等工艺参数对镍薄膜微结构的影响,得到了镍催化剂薄膜的氨预处理规律,并初步分析了氨气对其形貌变化的影响机理。研究结果表明,获得均匀、细小和高密度过渡镍金属催化剂颗粒的工艺条件是预处理时间、温度和催化剂薄膜原始厚度分别为12min8、00℃和10nm。
关键词(KeyWords): 氨气刻蚀;溅射;纳米颗粒;硅衬底
基金项目(Foundation): 国家自然科学基金重点资助(50435030)
作者(Author): 李刚,周明,马伟伟,蔡兰
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