| 纳米ZnO的制备及发光特性研究 |
| Preparation of Nano-size ZnO and its Luminescent Spectrum |
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| 摘要: |
| 关键词: 纳米氧化锌 制备 光致发光 |
| 基金项目: |
| Abstract: The samples of nano-size ZnO were prepared by precipitation, hydrolysis, sol-gel method and characterized by X-ray diffraction, Uv-Vis diffuse reflection spectrum, and time resolved luminescent spectrum. The results showed that the crystallite dimensions of all ZnO samples were coarsening with increasing annealing temperature and the grain sizes prepared by sol-gel method were obviously smaller than the others prepared by precipitation and hy-drolysis method. Under excitation of monochromatic light of wavelength 300nm, a strong and broad photolumines-cence (PL) emissions were observed in the wavelength range of 420～780nm. As the grain size decreased, the PL peak positions moved to shorter wavelengths. And as the annealing temperature increased, the peak intensity de-creased. The photoluminescence decay profile of ZnO was well described by three decay components of 46ns, 330ns and 1630ns. |
| Keywords: nano-size ZnO preparation photoluminescence |
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| 李旦振,陈亦琳,林熙,王绪绪,付贤智.纳米ZnO的制备及发光特性研究[J].无机化学学报,2002,18(12):1229-1232. |
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