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Synthesis and characterization of aligned ZnO/MgO core–shell nanorod arrays on ITO substrate

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Abstract

ZnO/MgO core–shell nanorod arrays were synthesized successfully by the hydrothermal growth method. Photoluminescence (PL) emission from the nanorods showed remarkable enhancement after the growth of the MgO layer. The ZnO/MgO core–shell nanorods are type-I heterostructures, the electrons and holes of which are both confined in the core of the nanorods, as a result, leading to the increase of the photoluminescence intensity in this system. In addition, another reason for the enhancement of PL emission was the deposition of MgO shell suppression of surface defects. In addition, the activation energy (E a) of 63 meV in the ZnO/MgO core–shell nanorods was obtained from temperature-dependent PL.

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Acknowledgments

This work is supported by Program for the National Natural Science Foundation of China (Grant Nos. 61008051, 61178074), Program for the development of Science and Technology of Jilin province (Item Nos. 201215225, 201105084, 201205078 and 201215223).

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Authors and Affiliations

  1. Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, South Nanhu Street No. 3888, Changchun, 130033, People’s Republic of China

    M. Gao, B. Feng, Y. F. Sun & H. Song

  2. Graduate School of the Chinese Academy of Sciences, Sanlihe Road No. 52, Bei**g, 100049, People’s Republic of China

    M. Gao, B. Feng & Y. F. Sun

  3. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Institute of Condensed State Physics, Jilin Normal University, Haifeng Street No. 1301, Si**, 136000, People’s Republic of China

    M. Gao, J. H. Yang, L. L. Yang, Y. J. Zhang, H. L. Liu, H. G. Fan, J. H. Lang, Y. R. Sui, B. Feng, Y. F. Sun & Z. Q. Zhang

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  1. M. Gao
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Correspondence to J. H. Yang.

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Gao, M., Yang, J.H., Yang, L.L. et al. Synthesis and characterization of aligned ZnO/MgO core–shell nanorod arrays on ITO substrate. Appl. Phys. B 112, 539–545 (2013). https://doi.org/10.1007/s00340-013-5436-z

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  • DOI: https://doi.org/10.1007/s00340-013-5436-z

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