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Atomic interaction and structural stabilities of Mg, Zn on Si surfaces and their alloys

Abstract

在当今追求科技产品多功能的信息时代,人们对微纳尺度光电器件和电子器件的集成要求日益提高。如何将以Si基半导体为代表的电子结构材料与宽禁带半导体结构材料制备在一起,成为人们关注的科学问题。然而,Si表面上金属原子所形成的结构稳定性和相互作用不确定,MgxZn1-xO混晶中相结构稳定性和原子相互作用等问题,极大地制约了这些半导体结构材料的应用。为此,本论文着重就Si(111)-(7×7)表面Mg/Zn结构和MgxZn1-xO混晶相结构的稳定性及其原子间相互作用开展研究。 首先,使用扫描隧道显微镜,在室温下对Mg在Si(111)-7×7表面上的初期吸附过程进行了表征,根据STM图中亮点数目的不同,...In the present information age, the integration of micro/nano optoelectronic and electronic devices has attracted much more attention to pursue the multi-functions products. How to integrally prepare typical electronic Si-based structure semiconductors with wide band gap semiconductors becomes a current topic. However, the structural stability and the interaction of relevant atoms will greatly res...学位:理学博士院系专业:物理与机电工程学院物理学系_凝聚态物理学号:1982006015317

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