Tunable emission from solid-solution phosphors Ba3(Sb,Ta)Ga3Si2O14:Bi3+, Eu3+for diverse optical applications

被引：1

作者：

Wang, Ying ^{[1
,2
,3
]}

Lyu, Zeyu ^{[2
,3
]}

Luo, Pengcheng ^{[2
,3
]}

Lu, Zheng ^{[1
,2
,3
]}

Sun, Dashuai ^{[2
,3
]}

Tan, Taixing ^{[2
,3
]}

Wei, Shuai ^{[2
,3
]}

Zhang, Hongyang ^{[1
,2
,3
]}

Hu, Hanyu ^{[1
,2
,3
]}

You, Hongpeng ^{[1
,2
,3
]}

机构：

[1] Univ Sci & Technol China, Sch Rare Earths, Hefei 230026, Peoples R China

[2] Chinese Acad Sci, Key Lab Rare Earths, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China

[3] Chinese Acad Sci, Inst Mat & Chem, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China

来源：

MATERIALS TODAY CHEMISTRY | 2025年 / 44卷

基金：

中国国家自然科学基金;

关键词：

Bi 3+luminescence; Tunable emission; Thermal stability; Anti-counterfeiting; LUMINESCENCE PROPERTIES; ENERGY-TRANSFER; CRYSTAL-STRUCTURE; BI3+;

D O I：

10.1016/j.mtchem.2025.102524

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of solid-solution phosphors Ba3Sb1-yTayGa3Si2O14:Bi3+ (0.0 <= y <= 1.0) were created using the hightemperature solid-state reaction. The crystal structure of Ba3Sb1-yTayGa3Si2O14 belongs to trigonal crystal system with space group P321 (150). The Rietveld refinements indicate that the Bi3+ ions occupy the Ba2+ sites. Ba3Sb1-yTayGa3Si2O14:0.03Bi3+ has tunable luminescence property peaking from 531 to 492 nm as the Sb5+ ions are gradually replaced by Ta5+ ions, which are correlated with the crystal field strength variation causing by the substitution of Sb5+ by Ta5+. The thermal stability of the emission at 423 K was improved from 5.4 to 49.9 %. When the obtained Ba3SbGa3Si2O14:0.03Bi3+/Ba3SbGa3Si2O14:0.03Bi3+,0.015Eu3+ was used as green light component, white LED devices were achieved with low CCT of 4613/4748 K and high Ra of 90.9/95.5. Moreover, multicolor luminescence was constructed by introducing red-emitting Eu3+ ions to create Ba3SbGa3Si2O14:0.03Bi3+,0.015Eu3+ and Ba3TaGa3Si2O14:0.03Bi3+,0.015Eu3+ phosphors. Under different excitation conditions, the multicolor emissions provide multi-modal and easily distinguishable anti-counterfeiting patterns. Our work demonstrates the feasible construct of tunable emission from Bi3+-doped solid-solution phosphors, providing a valuable candidate for diverse optical applications.

引用

页数：7

共 35 条

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