Synthesis, characterization, and electrical conductivity of ZnO with different morphologies
Synthesis, characterization, and electrical conductivity of ZnO with different morphologies
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DOI：
10.1016/j.powtec.2012.12.045
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发表时间：
2013-05
影响因子：
5.2
通讯作者：
Hongqiang Wang;Caihong Li;Haigang Zhao;Ru Li;Jinrong Liu
中科院分区：
文献类型：
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作者：
Hongqiang Wang;Caihong Li;Haigang Zhao;Ru Li;Jinrong Liu
以Zn（NO3）2·6H2O和NH3·6H2O为原料，采用简单的直接沉淀法制备了不同形貌的ZnO样品。通过扫描电子显微镜、X射线能谱仪和X射线衍射仪研究了ZnO粉体的形貌和纯度。研究了NH3·H2O浓度、陈化温度等因素对ZnO形貌的影响。光致发光光谱和拉曼光谱也被用来分析ZnO样品的原生晶体缺陷。结果表明，所制备的ZnO样品具有六方纤锌矿结构，纯度较高。另外，NH3·H2O浓度和陈化温度对ZnO形貌的控制也是至关重要的。不同形貌ZnO的电导率不同，这主要取决于ZnO样品中不同的原生晶体缺陷。
ZnO samples with different morphologies were prepared using a simple direct precipitation method with Zn (NO3)2⋅6H2O and NH3⋅H2O as raw materials. The morphology and purity of the ZnO powders were studied via scanning electron microscopy, energy dispersive X-ray spectrometry, and X-ray diffraction. Factors influencing the morphology of ZnO, such as NH3⋅H2O concentration and aging temperature, were studied. Photoluminescence spectra and Raman spectra were also used to analyze the native crystal defects of the ZnO samples. The results showed that the ZnO samples prepared in this work possessed a hexagonal wurtzite structure with high purity. In addition, NH3⋅H2O concentration and aging temperature were essential in controlling the morphologies of ZnO. The electrical conductivities of ZnO with different morphologies were different, which mainly depends on the different native crystal defects of the ZnO samples.