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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Nanopowder synthesis of aluminum doped cadmium oxide via sol-gel calcination processing
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Nanopowder synthesis of aluminum doped cadmium oxide via sol-gel calcination processing

机译：溶胶-凝胶煅烧工艺纳米粉体掺杂铝的氧化镉

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摘要

The structural, optical and electrical properties of undoped and Al-doped CdO powder nanostructures prepared by sol-gel calcinations method have been investigated. X-ray diffraction (XRD) results revealed that pure and Al-doped CdO have the polycrystalline with face centered cubic (FCC) structure. The crystallite size for undoped and 5,10, 15, 20% of Al-doped CdO samples were found to be 17.2, 15.9, 16.1, 16.3 and 16.8 nm, respectively. The optical band gap of the samples were determined from the diffused reflectance spectra and E_g values for undoped and 5,10,15,20% of Al-doped CdO samples were found to be 1.89,2.07,2.03,2.07 and 2.12 eV, respectively. The electrical conductivities of pure and Al-doped CdO were measured in the temperature range (290-420 K) and their temperature dependence was analyzed according to Arrhenius relation. The electrical conductivity results indicate that the electrical conductivity mechanism is controlled by thermally activated processes. The results showed that sol-gel calcinations technique can be effectively used to produce undoped and doped nanopowders.
机译：研究了通过溶胶-凝胶煅烧法制备的未掺杂和铝掺杂的CdO粉末纳米结构的结构，光学和电学性质。 X射线衍射（XRD）结果表明，纯铝掺杂的CdO具有面心立方（FCC）结构的多晶。发现未掺杂和5,10,15,20％的Al掺杂的CdO样品的微晶尺寸分别为17.2、15.9、16.1、16.3和16.8 nm。由漫反射光谱确定样品的光学带隙，未掺杂的和掺铝的CdO样品的5,10,15,20％的E_g值分别为1.89、2.07、2.03、2.07和2.12 eV。 。在290-420 K的温度范围内测量了纯CdO和Al掺杂CdO的电导率，并根据Arrhenius关系分析了它们的温度依赖性。电导率结果表明，电导率机制受热激活过程控制。结果表明，溶胶-凝胶煅烧技术可以有效地用于生产未掺杂和掺杂的纳米粉体。

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