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Enhanced electron field emission from CuO nanoplate arrays decorated with Au nanoparticles

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Abstract

A simple and controllable method was reported for the decoration of CuO nanoplate arrays with Au nanoparticles. It had been achieved through the reaction between Sn2+ and AuCl4 − in the presence of CuO nanoplate arrays. The structure and electron field emission properties of CuO nanoplate arrays decorated with different amounts of Au nanoparticles were investigated. The results demonstrated a remarkable enhancement of field emission performance of CuO nanoplate arrays decorated with Au nanoparticles. The effect of Au amount on the field emission performance was studied in detail, and excellent field emission properties such as a low turn-on electric field of 6.7 V/μm and a high field enhancement factor of 516 could be realized from the optimized sample. On the basis of experimental results, a possible mechanism for the formation of the CuO nanoplate arrays decorated with Au nanoparticles was speculated.

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Acknowledgments

This work was supported by National Natural Science Foundation of China (21201156) and the Fundamental Research Founds for National University, China University of Geosciences (Wuhan, CUG130401). The financial support is gratefully appreciated.

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Authors and Affiliations

  1. Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, People’s Republic of China

    Fei Li, Shumao Wu, Liangji Zhang & Zhen Li

  2. Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, People’s Republic of China

    Fei Li & Zhen Li

Authors
  1. Fei Li
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  2. Shumao Wu
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  4. Zhen Li
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Correspondence to Fei Li.

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Li, F., Wu, S., Zhang, L. et al. Enhanced electron field emission from CuO nanoplate arrays decorated with Au nanoparticles. Appl. Phys. A 120, 1383–1389 (2015). https://doi.org/10.1007/s00339-015-9321-y

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  • DOI: https://doi.org/10.1007/s00339-015-9321-y

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