制备工艺对ZnO薄膜的结构与光学性质的影响

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制备工艺对ZnO薄膜的结构与光学性质的影响
9 _( b* J0 Z% Z! \【摘要】 利用射频磁控反应溅射技术生长出具有高度晶面(0002)取向的ZnO外延薄膜。通过AFM、XRD、吸收光谱和荧光光谱等测试手段,分别研究分析了不同衬底、不同溅射气氛和退火对ZnO薄膜结构及光学性质的影响。研究表明,在200℃低温生长的硅基ZnO薄膜具有几百纳米的氧化锌准六角结构外形;当氧氩比为4:1(质量流量比)时,吸收谱激子峰最佳;退火后,激子峰(363 nm)加强,同时出现了402 nm的本征氧空位紫光发射。
【英文摘要】 Low temperature epitaxial growth of highly c-axis(0002) oriented ZnO thin films were achieved on n-Si(001)and quartz glass substrates separately by reactive radio frequency(RF) magneto co-sputtering technique.The properties of the samples were studied by XRD,AFM,ABS and PL.It is found that the structure and optical properties of ZnO thin films are influenced by the sputtering atmosphere and the anneal procedure.A quasi-hexagonal structure of ZnO thin film is observed by AFM when it was deposited on n-Si(001...