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首页> 外文期刊>Journal of theoretical and applied physics >Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method
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Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method

机译：共沉淀法制备纯ZnO和Co掺杂的ZnO纳米粒子的合成，结构和光学性质

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Pure ZnO and Cobalt (Co) doped ZnO nanoparticles (NPs) were synthesized by the co-precipitation method. The synthesized nanoparticles retained the wurtzite hexagonal structure, which was confirmed by X-ray diffraction studies. From FESEM studies, ZnO and Co doped ZnO NPs showed Spherical and nanorod mixed phase and Spherical like morphology, respectively. The amount of dopant (Co_(2+)) incorporated into ZnO sample was determined by EDAX. The FT-IR spectra confirmed the Zn–O stretching bands at 438 and 427?cm_(?1) for ZnO and Co doped ZnO NPs. From the UV–VIS spectroscopic measurements, the excitonic pecks were found around 376 and 370?nm for the respective samples. The photoluminescence measurements revealed that the broad emission was composed of seven different bands due to zinc vacancies, oxygen vacancies and surface defects. The dynamic light scattering (DLS) and Zeta potential measurements were used to find out the size and surface charges.
机译：通过共沉淀法合成了纯ZnO和钴（Co）掺杂的ZnO纳米颗粒（NPs）。合成的纳米粒子保留了纤锌矿的六边形结构，这通过X射线衍射研究得到了证实。根据FESEM研究，ZnO和Co掺杂的ZnO NP分别显示出球形和纳米棒混合相以及类似于球形的形态。通过EDAX确定掺入ZnO样品中的掺杂剂（Co_（2+））的量。 FT-IR光谱证实了ZnO和Co掺杂的ZnO NP在438和427？cm _（？1）处的Zn-O拉伸带。通过UV-VIS光谱测量，分别发现了在376和370nm附近的激子啄。光致发光测量结果表明，由于锌空位，氧空位和表面缺陷，宽发射由七个不同的带组成。使用动态光散射（DLS）和Zeta电位测量来找出尺寸和表面电荷。

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