A new rare-earth orthoborate Ba2CdSm2(BO3)4: Synthesis, crystal structure, vibrational spectra, and luminescent properties

被引：5

作者：

Yuan, Xuyang ^{[1
]}

Chen, Xuean ^{[1
]}

Xiao, Weiqiang ^{[2
]}

Song, Xiaoyan ^{[1
]}

机构：

[1] Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China

[2] Beijing Univ Technol, Beijing Key Lab Microstruct & Property Solids, Beijing 100124, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2023年 / 321卷

基金：

中国国家自然科学基金;

关键词：

Ba2CdSm2(BO3)4; Rare-earth borate; Crystal structure; Luminescence; ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; PHOSPHOR; GROWTH; TB3+; EU3+; SM3+; LN; PHOTOLUMINESCENCE; EFFICIENCIES;

D O I：

10.1016/j.jssc.2023.123934

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new rare-earth orthoborate Ba2CdSm2(BO3)4 was prepared using the high temperature molten salt method and structurally characterized by single-crystal XRD analysis with following crystallographic data: Pna21, a = 7.6621(1) angstrom, b = 26.2866(4) angstrom, c = 16.4563(3) angstrom, V = 3314.47(9) angstrom 3, and Z = 12. It exhibits a complicated three-dimensional framework constructed from (Cd/Sm)On (n = 7, 8, and 9) distorted polyhedra and BO3 planar tri-angles, with the open channels and the pockets on the wall of the channels hosting Ba2+ and Ba2+/Sm3+ cations. In addition, the phase purity, morphology, IR, Raman, XPS, UV-vis absorption spectra and luminescent properties of this compound were studied. Upon excitation at 401 nm, Ba2CdSm2(BO3)4 displays the orange-red emission with CIE coordinates of (0.5869, 0.4122), which is associated with the characteristic transitions from the excited state 4G5/2 to the ground state 6HJ (J = 5/2, 7/2, 9/2, 11/2) of Sm3+ ion. The phosphor shows the stable luminescence at elevated temperature, and its room temperature fluorescent decay profile exhibits a biexpo-nential shape with the average lifetime of 0.7297 ms. As it is expected, Ba2CdSm2(BO3)4 may be a potential orange-red phosphor under near-UV light excitation.

引用

页数：11

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