| Preparation and Luminescent Properties of ZnO Microrods and Microtubes |
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| 作者姓名： | CHENJian-Gang GUOChang-Xin ZHANGLin-Li HUJun-Tao |
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| 作者单位： | [1]DepartmentofPhysics,UniversityofScienceandTechnologyofChina,Hefei230026 [2]StructureResearchLaboratory,UniversityofScienceandTechnologyofChina,Hefei230026 |
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| 摘 要： | Hexagonal ZnO microrods and sub-microrods have been prepared through thermal decomposition of an equimolar (0.1 M) aqueous solution of Zn(NO3)2.4H20 and (CH2)6N4 a~t 90~C for different times (10-46h). The microrods were transformed into hollow hexagonal ZnO microtubes when the growth time reached 46 h. The Raman spectra and the photoluminescent (PL) spectra were measured. The PL spectra of microrods consist of two strong narrow near-UV bands at 380 nm and 400 nm assigned to free exciton emission and exciton-exciton collision, respectively.The PL spectrum of ZnO microtubes show only one peak in the near-UV region with peak located at 380nm with FWHM of about 20nm assigned to free exciton emission. When the growth time increased, the peak intensity of near-UV band decreased.
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| 关 键 词： | 氧化锌微杆 氧化锌微管 发光性能 热分解 化学气相沉积 X光衍射分析 |
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