Epitaxial Growth and Microstructure of Cu2O Nanoparticle/thin Films on SrTiO3(100)

Yu, Zhongqing; Wang, Chong M; Engelhard, Mark H; Nachimuthu, Ponnusamy; McCready, David E; Lyubinetsky, Igor; Thevuthasan, Suntharampillai

doi:10.1088/0957-4484/18/11/115601

Title: Epitaxial Growth and Microstructure of Cu2O Nanoparticle/thin Films on SrTiO3(100)

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Abstract

Cuprous oxide (Cu2O) was grown on SrTiO3 (STO)(100) by oxygen plasma assisted molecular beam epitaxy. Microstructure of the grown layer and Cu valence state were analyzed using x-ray diffraction (XRD), x-ray photo-electron spectroscopy (XPS), atomic force microscopy (AFM), and cross-sectional transmission electron microscopy (TEM) as well as electron diffractions. The grown layer was dominated by Cu2O phase, possessing an epitaxial orientation with the substrate such that: Cu2O[001]//STO[001] and Cu2O(100)//STO(100). Cu2O film morphologically shows dependence on the growth rate. Typically, a fast growth will lead to the formation of a thin film with a relatively smooth surface. A slow growth will lead to the development of nanoparticles, featuring the formation of Cu2O pyramid. The pyramids are invariantly defined by the Cu2O {111} planes. Given the fact that the {111} planes correspond to the lowest surface energy of Cu2O, a slow growth will lend the system enough time to allow it to adopt the pyramid configuration by which the overall energy of the system was minimized.

Authors:: Yu, Zhongqing; Wang, Chong M; Engelhard, Mark H; Nachimuthu, Ponnusamy; McCready, David E; Lyubinetsky, Igor; Thevuthasan, Suntharampillai

Publication Date:: Wed Feb 07 00:00:00 EST 2007

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)

Sponsoring Org.:: USDOE

OSTI Identifier:: 909245

Report Number(s):: PNNL-SA-53321
5105; KP1704020; TRN: US200722%%1172

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: Nanotechnology, 18:Art. No. 115601

Additional Journal Information:: Journal Volume: 18

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; ATOMIC FORCE MICROSCOPY; CONFIGURATION; ELECTRON DIFFRACTION; MICROSTRUCTURE; MOLECULAR BEAM EPITAXY; ORIENTATION; OXIDES; OXYGEN; SPECTROSCOPY; SUBSTRATES; SURFACE ENERGY; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; VALENCE; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY; Environmental Molecular Sciences Laboratory

Citation Formats


                    Yu, Zhongqing, Wang, Chong M, Engelhard, Mark H, Nachimuthu, Ponnusamy, McCready, David E, Lyubinetsky, Igor, and Thevuthasan, Suntharampillai. Epitaxial Growth and Microstructure of Cu2O Nanoparticle/thin Films on SrTiO3(100).  United States: N. p., 2007. 
        Web.  doi:10.1088/0957-4484/18/11/115601.

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                    Yu, Zhongqing, Wang, Chong M, Engelhard, Mark H, Nachimuthu, Ponnusamy, McCready, David E, Lyubinetsky, Igor, & Thevuthasan, Suntharampillai. Epitaxial Growth and Microstructure of Cu2O Nanoparticle/thin Films on SrTiO3(100).  United States.  https://doi.org/10.1088/0957-4484/18/11/115601

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                    Yu, Zhongqing, Wang, Chong M, Engelhard, Mark H, Nachimuthu, Ponnusamy, McCready, David E, Lyubinetsky, Igor, and Thevuthasan, Suntharampillai. 2007.  
        "Epitaxial Growth and Microstructure of Cu2O Nanoparticle/thin Films on SrTiO3(100)".  United States.  https://doi.org/10.1088/0957-4484/18/11/115601.

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@article{osti_909245,

  title        = {Epitaxial Growth and Microstructure of Cu2O Nanoparticle/thin Films on SrTiO3(100)},

  author       = {Yu, Zhongqing and Wang, Chong M and Engelhard, Mark H and Nachimuthu, Ponnusamy and McCready, David E and Lyubinetsky, Igor and Thevuthasan, Suntharampillai},

  abstractNote = {Cuprous oxide (Cu2O) was grown on SrTiO3 (STO)(100) by oxygen plasma assisted molecular beam epitaxy. Microstructure of the grown layer and Cu valence state were analyzed using x-ray diffraction (XRD), x-ray photo-electron spectroscopy (XPS), atomic force microscopy (AFM), and cross-sectional transmission electron microscopy (TEM) as well as electron diffractions. The grown layer was dominated by Cu2O phase, possessing an epitaxial orientation with the substrate such that: Cu2O[001]//STO[001] and Cu2O(100)//STO(100). Cu2O film morphologically shows dependence on the growth rate. Typically, a fast growth will lead to the formation of a thin film with a relatively smooth surface. A slow growth will lead to the development of nanoparticles, featuring the formation of Cu2O pyramid. The pyramids are invariantly defined by the Cu2O {111} planes. Given the fact that the {111} planes correspond to the lowest surface energy of Cu2O, a slow growth will lend the system enough time to allow it to adopt the pyramid configuration by which the overall energy of the system was minimized.},

  doi          = {10.1088/0957-4484/18/11/115601},

  url          = {https://www.osti.gov/biblio/909245},
  journal      = {Nanotechnology, 18:Art. No. 115601},
number       = ,

  volume       = 18,

  place        = {United States},

  year         = {Wed Feb 07 00:00:00 EST 2007},

  month        = {Wed Feb 07 00:00:00 EST 2007}

}

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