| 熔盐法生长ZnO单晶颗粒的机制与光学性能研究 |
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| 引用本文： | 苏海林,唐少龙,陈翌庆,贾冲,石敏,许育东,都有为. 熔盐法生长ZnO单晶颗粒的机制与光学性能研究[J]. 合肥工业大学学报(自然科学版), 2009, 32(5) |
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| 作者姓名： | 苏海林 唐少龙 陈翌庆 贾冲 石敏 许育东 都有为 |
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| 作者单位： | 合肥工业大学,材料科学与工程学院,安徽,合肥,230009;南京大学,固体微结构物理国家重点实验室,江苏,南京,210093;南京大学,固体微结构物理国家重点实验室,江苏,南京,210093;合肥工业大学,材料科学与工程学院,安徽,合肥,230009 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，高等学校博士学科点专项科研(新教师)基金，合肥工业大学博士学位专项基金 |
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| 摘 要： | 文章采用熔盐法生长ZnO颗粒,研究了颗粒生长机制以及合成条件对于颗粒晶体质量和光学性能的影响.研究发现:熔盐法生长的ZnO颗粒为单晶,具有六角纤锌矿结构,其生长机制由Ostwald熟化生长和取向联结生长2种机制组成;此外,煅烧条件对于颗粒的晶体质量和发光性能均具有很大影响;Ar气负压条件下的高温煅烧有助于提高颗粒整体的结晶质量,但同时也会在颗粒内引入氧空位缺陷,从而使其具有较强的绿光发射性能;而ZnO颗粒在空气常压条件下煅烧虽然可以减少氧空位缺陷,但是其较快的生长速率却会在颗粒内引入应力和其他缺陷,从而降低颗粒的晶体质量,造成其发光性能很弱.
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| 关 键 词： | 熔盐法 ZnO颗粒 生长机制 拉曼光谱 光致发光 |
Growth mechanism of single-crystal ZnO nanoparticles by molten salt synthesis and their optical properties |
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| SU Hai-lin,TANG Shao-long,CHEN Yi-qing,JIA Chong,SHI Min,XU Yu-dong,DU You-wei. Growth mechanism of single-crystal ZnO nanoparticles by molten salt synthesis and their optical properties[J]. Journal of Hefei University of Technology(Natural Science), 2009, 32(5) |
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| Authors: | SU Hai-lin TANG Shao-long CHEN Yi-qing JIA Chong SHI Min XU Yu-dong DU You-wei |
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| Affiliation: | 1.School of Material Science and Engineering;Hefei University of Technology;Hefei 230009;China;2.National Key Laboratory of Solid State Microstructure and Physics;Nanjing University;Nanjing 210093;China |
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| Abstract: | ZnO particles were prepared by the molten salt method.Their growth mechanism and the influences of the preparation conditions on their crystal quality and optical properties were studied in detail.It was found that the ZnO particles prepared were single crystals with a hexagonal wurtzite structure.Their growth mechanism comprises Ostwald ripening and oriented attachment.Moreover,the calcining condition had great influence on both the crystal quality and the photoluminescence property of the particles.High-c... |
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| Keywords: | molten salt method ZnO particle growth mechanism Raman spectrum photoluminescence |
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