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Published March 15, 2011 | public
Journal Article

Epitaxial growth of Cu_2O and ZnO/Cu_2O thin films on MgO by plasma-assisted molecular beam epitaxy


We report the epitaxial growth of Cu_2O (0 0 1) and m-plane (1 0 1¯ 0) ZnO/Cu_2O thin films on both bulk MgO (0 0 1) and biaxially textured thin films of MgO (0 0 1) via plasma-assisted molecular beam epitaxy. Cube on cube epitaxial growth of Cu_2O thin films on both bulk MgO (0 0 1) and biaxially textured thin films of MgO (0 0 1) was observed and confirmed via X-ray diffraction and reflection high energy electron diffraction measurements. In addition, epitaxial m-plane ZnO growth via plasma-assisted MBE was conducted on both MgO substrates and Cu_2O/MgO substrates. The ability to grow oriented, high-quality n-ZnO/p-Cu_2O heterostructures enables improved thin film morphology and may have important implications for optoelectronic and photovoltaic devices.

Additional Information

© 2011 Elsevier B.V. Received 13 December 2010; revised 14 January 2011; accepted 24 January 2011. Communicated by K.H. Ploog. Available online 1 February 2011. This work was supported by the Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy, under Grant DE-FG36-08GO18006 and Dow Chemical Company.

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