中国物理B ›› 2012, Vol. 21 ›› Issue (7): 76401-076401.doi: 10.1088/1674-1056/21/7/076401

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Temperature dependence of Cu2O orientations in oxidation of Cu (111)/ZnO (0001) by oxygen plasma

李俊强a, 梅增霞a, 叶大千a, 侯尧楠a, 刘尧平a, A. Yu. Kuznetsovb, 杜小龙a   

  1. a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b Department of Physics, University of Oslo, P.O. Box 1048 Blindern, NO-0316 Oslo, Norway
  • 收稿日期:2012-02-14 修回日期:2012-03-09 出版日期:2012-06-01 发布日期:2012-06-01
  • 基金资助:
    Project supported by the Ministry of Science and Technology of China (Grant Nos. 2011CB302002, 2009CB929400 and 2009AA033101), the National Natural Science Foundation of China (Grant Nos. 11174348 and 61076007), the Chinese Academy of Sciences, and the National Synchrotron Radiation Laboratory in the University of Science and Technology of China.

Temperature dependence of Cu2O orientations in oxidation of Cu (111)/ZnO (0001) by oxygen plasma

Li Jun-Qiang(李俊强)a), Mei Zeng-Xia(梅增霞) a)†, Ye Da-Qian(叶大千)a), Hou Yao-Nan(侯尧楠)a), Liu Yao-Ping(刘尧平) a), A. Yu. Kuznetsovb), and Du Xiao-Long(杜小龙) a)‡   

  1. a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b Department of Physics, University of Oslo, P.O. Box 1048 Blindern, NO-0316 Oslo, Norway
  • Received:2012-02-14 Revised:2012-03-09 Online:2012-06-01 Published:2012-06-01
  • Contact: Mei Zeng-Xia, Du Xiao-Long E-mail:zxmei@aphy.iphy.ac.cn;xldu@aphy.iphy.ac.cn
  • Supported by:
    Project supported by the Ministry of Science and Technology of China (Grant Nos. 2011CB302002, 2009CB929400 and 2009AA033101), the National Natural Science Foundation of China (Grant Nos. 11174348 and 61076007), the Chinese Academy of Sciences, and the National Synchrotron Radiation Laboratory in the University of Science and Technology of China.

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摘要： The role of temperature on the oxidation dynamics of Cu2O on ZnO (0001) was investigated during the oxidation of Cu (111)/ZnO (0001) by using the oxygen plasma as oxidant. A transition from single crystalline Cu2O (111) orientation to micro-zone phase separation with multiple orientations was revealed when the oxidation temperature increased from 300 ℃ to higher. The experimental results clearly showed the effect of oxidation temperature with the assistance of oxygen plasma on changing the morphology of Cu (111) film and enhancing the lateral nucleation and migration abilities of cuprous oxides. A vertical top-down oxidation mode and a lateral migration model were proposed to explain the different nucleation and growth dynamics of the temperature-dependent oxidation process in the oxidation of Cu (111)/ZnO (0001).

关键词: Cu2O, oxidation, plasma, molecular beam epitaxy

Abstract: The role of temperature on the oxidation dynamics of Cu2O on ZnO (0001) was investigated during the oxidation of Cu (111)/ZnO (0001) by using the oxygen plasma as oxidant. A transition from single crystalline Cu2O (111) orientation to micro-zone phase separation with multiple orientations was revealed when the oxidation temperature increased from 300 ℃ to higher. The experimental results clearly showed the effect of oxidation temperature with the assistance of oxygen plasma on changing the morphology of Cu (111) film and enhancing the lateral nucleation and migration abilities of cuprous oxides. A vertical top-down oxidation mode and a lateral migration model were proposed to explain the different nucleation and growth dynamics of the temperature-dependent oxidation process in the oxidation of Cu (111)/ZnO (0001).

Key words: Cu2O, oxidation, plasma, molecular beam epitaxy

中图分类号:  (Phase separation and segregation in oxidation)

  • 64.75.Lm
68.55.-a (Thin film structure and morphology) 81.15.Hi (Molecular, atomic, ion, and chemical beam epitaxy)