| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Optical Properties of Plate-Shaped ZnO Nanocrystals Grown by a Facile and Environmentally Friendly Molten Salt Method |
| WANG Wen-Zhong**, LIANG Yu-Jie, SHI Hong-Long, ZHANG Gu-Ling |
School of Science, Minzu University of China, Beijing 100081
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| Cite this article: |
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WANG Wen-Zhong, LIANG Yu-Jie, SHI Hong-Long et al 2014 Chin. Phys. Lett. 31 097802 |
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Abstract Plate-shaped ZnO nanocrystals are prepared by a facile and environmentally friendly molten salt method, in which Zn5(CO3)2(OH)6 nanorods are first synthesized via a facile one-step, solid-state reaction route at room temperature and then decomposed in NaCl flux. Photoluminescence property demonstrates that the as-prepared plate-shaped ZnO nanocrystals exhibit a strong blue emission centered at about 483 nm. Raman scattering spectrum reveals that the as-prepared plate-shaped ZnO nanocrystals have the oxygen deficiency, which can be confirmed by the appearance of oxygen-deficiency-related vibrational mode at 583 cm?1 in the Raman spectrum. The oxygen deficiency existing in the plate-shaped ZnO nanocrystals results in the formation of the oxygen vacancy, which is most likely responsible for the strong blue emission of the plate-shaped ZnO nanocrystals. These new plate-shaped ZnO nanocrystals with strong blue emission are expected to show considerable potential applications in luminescence, lasing and optoelectronic devices.
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| PACS: |
78.67.Bf
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(Nanocrystals, nanoparticles, and nanoclusters)
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81.07.Bc
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(Nanocrystalline materials)
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78.55.-m
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(Photoluminescence, properties and materials)
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