Journal
CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
Volume 8, Issue 5, Pages 1027-1033Publisher
DE GRUYTER POLAND SP Z O O
DOI: 10.2478/s11532-010-0075-2
Keywords
CdS; Flower-like architectures; Solvothermal synthesis; Field-emission scanning electron microscopy; Optical properties
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Funding
- National Natural Science Foundation of China [20901072]
- University in Jiangsu [09KJD430006]
- Jiangsu University of Science and Technology [35060810]
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Self-assembled CdS architectures with flower-like structures have been synthesized by a mixed solvothermal method using ethylene glycol and oleic acid as the mixed solvent at 160 degrees C for 12 h. The results of X-ray diffraction (XRD) patterns, field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) images indicate that the product exists as the hexagonal wurtzite phase and conatins of larger numbers of flower-like CdS architectures with diameters of 1.8-3 mu m. The selected-area electron diffraction (SAED) pattern and the high resolution transmission electron microscope (HRTEM) image reveal that the grain has better crystallinity. The optical properties of flower-like CdS architectures were also investigated by ultraviolet-visable (UV-vis) and photoluminescence spectroscopy at room temperature. A strong peak at 490 nm is shown in the UV-vis absorption, while an emission at 486 nm and another strong emission at 712 nm are shown in the PL spectrum.
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