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Effects of Solvent Ratio on the Morphology, Growth, and Photoluminescence of Hexagonal Pyramidal β‐NaYF4:Eu3+ Microrods
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-05-08 , DOI: 10.1002/pssa.202000099 Tianxiang Zhao 1 , Zihui Xu 1 , Nan Chen 1 , Jinpeng Liu 1 , Guoping Du 1
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-05-08 , DOI: 10.1002/pssa.202000099 Tianxiang Zhao 1 , Zihui Xu 1 , Nan Chen 1 , Jinpeng Liu 1 , Guoping Du 1
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Hexagonal pyramidal β‐NaYF4:Eu3+ are synthesized with a facile solvothermal method using the mixture of ethylene glycol and deionized water (DIW) as the reaction solvents. The solvent ratio has a strong effect on the morphology, growth, and photoluminescence (PL) properties of β‐NaYF4:Eu3+. Both the particle size and the aspect ratio of length/diameter of the β‐NaYF4:Eu3+ increase with the proportion of DIW in the reaction solvents, and their crystallinity is also enhanced. The growth behavior of the β‐NaYF4:Eu3+ has been analyzed and explained based on the intrinsic crystal structures, the surface free energy, and the interactions between the reacting ions. The PL of the β‐NaYF4:Eu3+ greatly increases with the proportion of DIW in the reaction solvents, and this is attributed to their enhanced crystallinity with lower density of nonradiative defects. Herein, a useful basis for preparation of luminescent materials with adjustable morphology and strong PL is provided.
中文翻译：
溶剂比例对六方金字塔形β-NaYF4：Eu3 +微棒的形态，生长和光致发光的影响
六角锥体β-NaYF 4：Eu的3+与使用乙二醇和去离子水（DIW）作为反应溶剂的混合物中的溶剂热容易的方法合成。溶剂比例对形态学，生长和光致发光（PL）β-NaYF的性能有很强的影响4：Eu的3+。无论是颗粒大小和长度/直径的β-NaYF的纵横比4：Eu的3+与DIW在反应溶剂中的比例增加，并且其结晶性也提高。β‐NaYF 4：Eu 3+的生长行为已经根据本征晶体结构，表面自由能以及反应离子之间的相互作用进行了分析和解释。β型NaYF的PL 4：Eu的3+与DIW在反应溶剂中的比例大大增加，这是由于他们的强化结晶性与非辐射性缺陷的较低的密度。在此，提供了制备具有可调节形态和强PL的发光材料的有用基础。
更新日期：2020-05-08
中文翻译：
溶剂比例对六方金字塔形β-NaYF4：Eu3 +微棒的形态，生长和光致发光的影响
六角锥体β-NaYF 4：Eu的3+与使用乙二醇和去离子水（DIW）作为反应溶剂的混合物中的溶剂热容易的方法合成。溶剂比例对形态学，生长和光致发光（PL）β-NaYF的性能有很强的影响4：Eu的3+。无论是颗粒大小和长度/直径的β-NaYF的纵横比4：Eu的3+与DIW在反应溶剂中的比例增加，并且其结晶性也提高。β‐NaYF 4：Eu 3+的生长行为已经根据本征晶体结构，表面自由能以及反应离子之间的相互作用进行了分析和解释。β型NaYF的PL 4：Eu的3+与DIW在反应溶剂中的比例大大增加，这是由于他们的强化结晶性与非辐射性缺陷的较低的密度。在此，提供了制备具有可调节形态和强PL的发光材料的有用基础。
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