Synthesis and optical properties of self-assembled flower-like CdS architectures by mixed solvothermal process |
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Authors: | Junhao Zhang Yuhui Wu Jia Zhu Shaoxing Huang Dongjing Zhang Qinghuan Yin |
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Institution: | (1) Department of Material Science and Engineering, Inha University, 253 Yonghyeondong, Incheon, 402-751, Republic of Korea; |
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Abstract: | 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°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 μm. 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.
![MediaObjects/11532_2010_75_Fig1_HTML.jpg](/content/820212NR506N591W/MediaObjects/11532_2010_75_Fig1_HTML.jpg) |
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