Journal
NANOSCALE RESEARCH LETTERS
Volume 5, Issue 7, Pages 1124-1127Publisher
SPRINGEROPEN
DOI: 10.1007/s11671-010-9612-3
Keywords
ZnS; Core-shell nanostructures; Optical properties
Funding
- Foundation of National Laboratory of Solid State Microstructures, Nanjing University [2010ZZ18]
- National High Technology Research and Development Program of China [2007AA021805]
- National Key Project for Basic Research [2005CB623605]
- People's Republic of China
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Novel core-shell nanostructures comprised of cubic sphalerite and hexagonal wurtzite ZnS have been synthesized at 150 degrees C by a simple hydrothermal method. The results of HR-TEM and SAED investigation reveal that the cores of hexagonal wurtzite ZnS (ca. 200 nm in average diameter) are encapsulated by a shell of cubic sphalerite ZnS. The FE-SEM image of the nanomaterials shows a surface tightly packed with nanoparticles (<10 nm in size). The optical properties of the fabricated material have been studied in terms of ultraviolet-visible absorption and photoluminescence. Furthermore, a possible mechanism for the fabrication of the core-shell nanostructures has been presented.
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