铋
材料科学
结晶度
无定形固体
氧化物
退火(玻璃)
制作
播种
化学工程
相(物质)
薄膜
图层(电子)
纳米技术
复合材料
冶金
结晶学
化学
有机化学
航空航天工程
病理
替代医学
工程类
医学
作者
Cheng‐Ching Yu,Ho Chang,Andy Sun,J. W. Chiou
出处
期刊:Vacuum
[Elsevier]
日期:2019-11-01
卷期号:169: 108918-108918
被引量:7
标识
DOI:10.1016/j.vacuum.2019.108918
摘要
The bismuth oxide films prepared by the physical evaporation of Bi2O3 or the thermal oxidation of Bi usually display amorphous or ploycrystalline structures. There has been only few reports on the fabrication of the pure β-phase Bi2O3 film which is accomplished under extreme conditions. In this study, an innovative method is introduced to fabricate the β-phase Bi2O3 film with (201) preferred orientation by utilizing an ultrathin Bi(001) seeding layer. The Bi/BiOx bylayers were prepared at room temperature first and then annealed in oxygen ambient. The formation of (201) orientation of Bi2O3 film was strongly related to the oxygen pressure during annealing. Compared with the bismuth oxide obtained directly from the thermal oxidation of the bismuth film, the β-phase Bi2O3(201) film displayed a smooth surface and well crystallinity.
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