Synthesis and photoluminescence,field emission properties of stalactite-like ZnS-ZnO composite nanostructures |
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| Authors: | J Li GJ Fang C Li LY Yuan L Ai NS Liu DS Zhao K Ding GH Li XZ Zhao |
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| Institution: | (1) Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, and Department of Electronic Science and Technology, School of Physical Science and Technology, Wuhan University, Wuhan, 430072, P.R. China;(2) State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Shanghai, 200050, P.R. China;(3) National Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100081, P.R. China |
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| Abstract: | Wurtzite stalactite-like quasi-one-dimensional ZnS nanoarrays with ZnO protuberances were synthesized through a thermal evaporation
route. The structure and morphology of the samples are studied and the growth mechanism is discussed. X-ray diffraction (XRD)
results show both the ZnS stem and the ZnO protuberances have wurtzite structure and show preferred 001] oriented growth.
The photoluminescence and field emission properties have also been investigated. Room temperature photoluminescence result
shows it has a strong green light emission, which has potential application for green light emitter. Experimental results
also show that the stalactite arrays have a good field emission property, with turn-on field of 11.4 V/μm, and threshold field
of 16 V/μm. The ZnO protuberances on the ZnS stem might enhance the field emission notably.
PACS 81.05.Dz; 81.07.Bc; 81.16.-c; 78.60.Hk; 85.45.Db |
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