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首页> 外文期刊>Physica, B. Condensed Matter >Synthesis and characterisation: Zinc oxide-sulfide nanocomposites
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Synthesis and characterisation: Zinc oxide-sulfide nanocomposites

机译：合成与表征：硫化锌纳米复合材料

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摘要

A novel synthesis method is presented for the preparation of nanosized-semiconductor zincoxide-sulphide (ZnO/ZnS) core-shell nanocomposites, both formed sequentially from a single-sourcesolid precursor. ZnO nanocrystals were synthesized by a simple co-precipitation method andZnO/ZnS core-shell nanocomposites were successfully fabricated by sulfidation of ZnO nano-crystals via a facile chemical synthesis at room temperature. The as-obtained samples werecharacterized by X-ray diffraction and transmission electron microscopy. The results showed thatthe pure ZnO nanocrystals were hexagonal wurtzite crystal structures and the ZnS nanoparticleswere sphalerite structure with the size of about 10 nm grown on the surface of the ZnO nanocrystals.Optical properties measured reveal that ZnO/ZnS core-shell nanocomposites have integratedthe photoluminescent effect of ZnO and ZnS. Based on the results of the experiments, a possibleformation mechanism of ZnO/ZnS core-shell nanocomposites was also suggested. This treatment issuggested to improve various properties of optoelectronically valuable ZnO/ZnS nanocomposites. Thesenanosized semiconductor nanocomposites can form a new class of luminescent materials for variousapplications.
机译：提出了一种新的合成方法，用于制备由单一来源的固体前体依次形成的纳米尺寸的半导体硫化锌（ZnO / ZnS）核壳纳米复合材料。采用简单的共沉淀法合成了ZnO纳米晶体，并在室温下通过简便的化学合成方法对ZnO纳米晶体进行硫化，成功制备了ZnO / ZnS核壳纳米复合材料。通过X射线衍射和透射电子显微镜表征所获得的样品。结果表明，纯ZnO纳米晶为六方纤锌矿型晶体结构，ZnS纳米晶为闪锌矿结构，在ZnO纳米晶表面生长约10 nm。光学性能表明ZnO / ZnS核壳纳米复合材料具有光致发光作用。 ZnO和ZnS。根据实验结果，提出了ZnO / ZnS核壳纳米复合材料可能的形成机理。建议采用这种处理方法来改善光电子有价值的ZnO / ZnS纳米复合材料的各种性能。纳米尺寸的半导体纳米复合材料可形成用于各种应用的新型发光材料。

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