Tiwary, CS and Kumbhakar, P and Mitra, AK and Chattopadhyay, K (2009) Synthesis of wurtzite-phase ZnS nanocrystal and its optical properties. In: Journal of Luminescence, 129 (11). pp. 1366-1370.
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The wurtzite phase of ZnS nanocrystal has been prepared by annealing in 200-600 degrees C temperature range, its cubic phase of 2-3 nm size. prepared through soft chemical method. Results of isochronal experiments of 2 h at different temperatures indicate that visible transformation to wurtzite from cubic ZnS appears at a temperature of 400 degrees C, which is about three times smaller than that of bulk ZnS phase transition temperature. The phases, nanostructures, and optical absorption characteristics are obtained through X-ray diffraction. transmission electron microscopy, and UV-visible absorption spectroscopy. A stable and green photoluminescence emission peaked at 518 nm is observed from the 600 degrees C annealed samples, under ultraviolet light excitation.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier B. V., 2009|
|Keywords:||Zinc sulphide; Wurtzite phase; Nanostructures; Photoluminescence; Characterization|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||17 Dec 2009 11:15|
|Last Modified:||19 Sep 2010 05:49|
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