A Controlled Growth of ZnO Nanostructures on ZnS
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ZnO nanostructures were developed on a microsphere of ZnS:Cu,Cl phosphor (ZC) for a potential application to a new light source. The growth mechanisms of these nano-structures are very different from those of previously reported methods due to the difference in the zinc ion source of ZnO on the micro-sphere ZC. In this report, ZnO plays two different roles: provision of a seed site and a zinc ion source during the swelling and hydrothermal reaction. In building nanostructures, nano-wires appeared nano-wires first appeared and played a key role in the growth of seed sites of nano-flowers. Additionally, a significant luminance enhancement in the CL spectrum is observed from the emission of the flowers/ZC apparently caused by secondary excitation due to the emission from ZnO nanoflowers.
KeywordsZnO nanostructure Coreshell ZnO–ZnS Hydrothermal synthesis Phosphors Cathodoluminescence
This research was financially supported by the Ministry of Education (MOE) and National Research Foundation of Korea (NRF) through Research Programs (Nos. 2016R1D1A1B03930387 and 2013M3C1A3065469).
- 13.G. Li, Y. Jiang, Y. Zhang, X. Lan, T. Zhai, G.-C. Yi, J. Mater. Chem. C 2, 8252 (2014)Google Scholar