正交晶系
微晶
镧系元素
结晶
荧光粉
材料科学
发光
热稳定性
热液循环
钼酸盐
兴奋剂
纳米晶
分析化学(期刊)
镧系收缩
水热合成
晶体结构
结晶学
矿物学
化学
纳米技术
光电子学
化学工程
有机化学
冶金
色谱法
离子
工程类
作者
Zhixin Xu,Panpan Du,Qi Zhu,Xiaodong Li,Xudong Sun,Ji‐Guang Li
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:50 (47): 17703-17715
被引量:9
摘要
Systematic crystallization of KLn(MoO4)2 double molybdate micro/nanocrystals was achieved in this work for the family of lanthanide elements (excluding Pm) and Y via hydrothermal reaction under the optimized conditions of pH = 7, Mo/Ln molar ratio R = 5 and 200 °C, with which the intrinsic influence of lanthanide contraction on phase preference, crystallite morphology (size/shape) and crystal structure was clearly revealed. Extended synthesis also produced KLa1-xEux(MoO4)2 (KLM:xEu) and KY1-yEuy(MoO4)2 (KYM:yEu) red phosphors, and detailed spectral analysis found that the layered structure of orthorhombic KYM allows Eu3+ to have a high quenching content of ∼70 at% (y = 0.7) and higher quantum efficiency and thermal stability of luminescence. Application also indicated that the KYM:0.7Eu optimal phosphor has the potential for optical temperature sensing with the thermally coupled 5D0 and 5D1 energy levels of Eu3+.
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