摘要
本文研究了在100℃~400℃下溅射制备的40nm铜薄膜的氧化行为。利用原子力显微镜(AFM)观察了铜薄膜氧化前期的微观形貌,并利用X射线衍射(XRD)和能量分散X射线谱(EDX)分析了其晶相结构和成份。随着温度的升高,铜薄膜氧化速率明显加快。在100℃下,Cu薄膜表面生成岛状非晶氧化物,温度升高至200℃后,生成Cu2O相的同时Cu薄膜表面产生重构现象,呈现疏松的网状结构。300℃和400℃下Cu薄膜几乎全部氧化,分别形成均匀分布的Cu2O和CuO晶粒。结果表明,利用AFM和XRD能灵敏地跟踪纳米尺度Cu薄膜的氧化过程。
Variations in microstructures and compositions at the initial oxidation stage in 100℃~400℃ of copper film, grown by magnetron sputtering on Si(100) substrate, were characterized with atomic force microscopy (AFM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX). The results show that as temperature rises, the oxidation rate increases. Below 100℃, islands of amorphous Cu oxides form on Cu surface. As the temperature reaches 200℃, Cu2O formation and reconstruction of Cu surface with a loose mesh texture, can be simultaneously observed. In the temperature range of 300℃~400℃, complete oxidation of Cu results in a uniform compact films of Cu2O and CuO grains.
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2006年第4期268-271,共4页
Chinese Journal of Vacuum Science and Technology
关键词
铜薄膜
氧化
原子力显微镜
微观表征
Cu thin films, Oxidation, AFM, Micro characterization