Micro-Raman and photoluminescence study of urchin-like ZnO structure assembled with nanorods synthesized by hydrothermal method |
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Authors: | Raghvendra S Yadav Avinash C Pandey |
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Institution: | (1) Nanophosphor Application Centre, University of Allahabad, Allahabad, 211002, India;(2) Physics Department, University of Allahabad, Allahabad, 211002, India |
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Abstract: | Urchin-like ZnO structures assembled with nanorods have been synthesized by cetyltrimethylammonium bromide-assisted hydrothermal
method. The as-obtained products were characterized by powder X-ray diffraction, field-emission scanning electron microscopy
for the study of crystal structure and morphology. The ZnO urchin is constructed of well-assembled nanorods of length ~3 μm
range and diameter ~20 nm. Micro-Raman study shows characteristic Raman-active mode of hexagonal ZnO at 439 cm−1 and also mode related to defects at ~581 cm−1. The ZnO urchin assembled with nanorods possessed band edge emission at 3.085 eV and defect related visible emission at 2.97,
2.57, and 2.36 eV. |
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