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Triangular ZnO nanosheets: synthesis, crystallography and cathodoluminescence.

Journal Article


Abstract


  • ZnO nanosheets with triangular morphology have been synthesized on an Au-coated silicon substrate through a facile thermal evaporation process. The morphologies and microstructures of the nanosheets were studied by a scanning electron microscope (SEM) and a high-resolution transmission electron microscope (HR-TEM). These studies show that a nanosheet is commonly composed of two parts: a triangular ZnO sheet and an Au nanoparticle attached on its tip-end. Detailed crystallography analyses conclude that the formation of the highly crystalline nanostructures can be assigned to a combination of a vapor-liquid-solid (VLS) process that is believed to be responsible for its initial nucleation and subsequent crystallization along the growth direction, and a vapor-solid (VS) process that is responsible for its further radial growth. The spatially-resolved cathodoluminescence (CL) spectra exhibit a sharp strong near-band-edge (NBE) emission in the ultraviolet range and a negligible green emission.

Publication Date


  • 2013

Citation


  • Hu, T., Liu, B., Yuan, F., Wang, Z., Huang, N., Zhang, G., . . . Jiang, X. (2013). Triangular ZnO nanosheets: synthesis, crystallography and cathodoluminescence.. Journal of nanoscience and nanotechnology, 13(8), 5744-5749. doi:10.1166/jnn.2013.7563

Web Of Science Accession Number


Start Page


  • 5744

End Page


  • 5749

Volume


  • 13

Issue


  • 8

Place Of Publication


Abstract


  • ZnO nanosheets with triangular morphology have been synthesized on an Au-coated silicon substrate through a facile thermal evaporation process. The morphologies and microstructures of the nanosheets were studied by a scanning electron microscope (SEM) and a high-resolution transmission electron microscope (HR-TEM). These studies show that a nanosheet is commonly composed of two parts: a triangular ZnO sheet and an Au nanoparticle attached on its tip-end. Detailed crystallography analyses conclude that the formation of the highly crystalline nanostructures can be assigned to a combination of a vapor-liquid-solid (VLS) process that is believed to be responsible for its initial nucleation and subsequent crystallization along the growth direction, and a vapor-solid (VS) process that is responsible for its further radial growth. The spatially-resolved cathodoluminescence (CL) spectra exhibit a sharp strong near-band-edge (NBE) emission in the ultraviolet range and a negligible green emission.

Publication Date


  • 2013

Citation


  • Hu, T., Liu, B., Yuan, F., Wang, Z., Huang, N., Zhang, G., . . . Jiang, X. (2013). Triangular ZnO nanosheets: synthesis, crystallography and cathodoluminescence.. Journal of nanoscience and nanotechnology, 13(8), 5744-5749. doi:10.1166/jnn.2013.7563

Web Of Science Accession Number


Start Page


  • 5744

End Page


  • 5749

Volume


  • 13

Issue


  • 8

Place Of Publication