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首页> 外文期刊>Journal of Crystal Growth >Synthesis and optical properties of Ce-doped ZnO hexagonal nanoplatelets
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Synthesis and optical properties of Ce-doped ZnO hexagonal nanoplatelets

机译：Ce掺杂ZnO六角形纳米片的合成及光学性质

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摘要

Single crystalline Ce-doped ZnO hexagonal nanoplatelets are successfully synthesized. Zinc acetate, cerium nitrate, potassium hydroxide and poly vinyl alcohol were mixed together and transferred to a 100 mL Teflon-lined stainless steel autoclave kept at 150 ℃ for 24 h. The obtained precipitant is calcined at 600 ℃. The morphology and microstructure were determined by field emission scanning electron microscopy (FE-SEM), X-ray diffraction transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and photoluminescence (PL) spectroscopy. The investigation confirmed that the products were of the wurtzite structure of ZnO. The doped hexagonal nanoplatelets have edge length 25 nm and thickness 11 nm. EDX result showed that the amount of Ce in the product is about 15%. Photoluminescence of these doped hexagonal nanoplatelets exhibits a blue shift and weak ultraviolet (UV) emission peak, compared with pure ZnO, which may be induced by Ce-doping. The growth mechanism of the doped hexagonal nanoplatelets was also discussed.
机译：成功地合成了单晶掺Ce的ZnO六角形纳米片。将乙酸锌，硝酸铈，氢氧化钾和聚乙烯醇混合在一起，并转移到保持在150℃的100 mL特氟龙衬里不锈钢高压釜中24小时。将获得的沉淀剂在600℃下煅烧。通过场发射扫描电子显微镜（FE-SEM），X射线衍射透射电子显微镜（TEM），能量色散X射线光谱（EDX）和光致发光（PL）光谱来确定形态和微观结构。研究证实，产物具有ZnO的纤锌矿结构。掺杂的六角形纳米片具有25nm的边缘长度和11nm的厚度。 EDX结果表明，产品中Ce的含量约为15％。与纯ZnO相比，这些掺杂的六角形纳米片的光致发光表现出蓝移和弱的紫外线（UV）发射峰，这可能是由铈掺杂引起的。还讨论了掺杂的六角形纳米片的生长机理。

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