用于暖白色发光二极管的具有高量子产率的高稳定性混合镧系有机框架材料。

Highly thermostable mixed lanthanide organic frameworks with high quantum yield for warm white light-emitting diodes.

作者信息

Shen Yanqiong, Pan Xianyong, Zhao Yaru, Gu Qingchuan, Li Qipeng

机构信息

College of Chemistry and Chemical Engineering, Zhaotong University, Zhaotong, China.

School of Physics and Information Engineering, Zhaotong University, Zhaotong, China.

出版信息

Front Chem. 2023 May 22;11:1204646. doi: 10.3389/fchem.2023.1204646. eCollection 2023.

DOI:10.3389/fchem.2023.1204646

PMID:37284579

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10239934/

Abstract

A mixed lanthanide organic framework was prepared hydrothermal methods using -phthalic acid (-HBDC), 1,10-phenanthroline (1,10-Phen), and Ln ions, formulated as [HNMe][EuTb(-BDC)(phen)] (). The structure and stability of were characterised by X-ray diffraction (XRD) and thermogravimetric analysis (TGA), which revealed a three-dimensional topology with high thermal stability. Fluorescence tests showed that emitted orange light with a high quantum yield of 79.15%, and it can be effectively encapsulated in a light-emitting diode (LED) device emitting orange light. In addition, was found to be compatible with BaMgAlO:Eu (BAM) blue powder and [(Sr,Ba)SiO:Eu] silicate yellow and green powder to create a warm white LED with a high colour rendering index (CRI) of 93.4, a correlated colour temperature (CCT) of 3908 K, and CIE coordinates of (0.38, 036).

摘要

采用水热法，以对苯二甲酸（-HBDC）、1,10-菲啰啉（1,10-Phen）和镧系离子制备了一种混合镧系有机框架，其化学式为[HNMe][EuTb(-BDC)(phen)]（）。通过X射线衍射（XRD）和热重分析（TGA）对其结构和稳定性进行了表征，结果表明其具有三维拓扑结构且热稳定性高。荧光测试表明，该框架发出橙色光，量子产率高达79.15%，并且可以有效地封装在发出橙色光的发光二极管（LED）器件中。此外，还发现该框架与BaMgAlO:Eu（BAM）蓝色粉末以及[(Sr,Ba)SiO:Eu]硅酸盐黄色和绿色粉末相容，从而制备出显色指数（CRI）高达93.4、相关色温（CCT）为3908 K且CIE坐标为（0.38, 0.36）的暖白色LED。