Site Occupancies, Electron-Vibration Interaction and Energy Transfer of CaMgSi2O6: Eu2+, Mn2+ Phosphors for Potential Temperature-Sensing and Anti-counterfeiting Applications

被引：10

作者：

Su, Fang ^{[1
]}

Yang, Yunlin ^{[1
]}

Ou, Yiyi ^{[1
]}

Zhou, Weijie ^{[1
]}

Ma, Fengkai ^{[1
]}

Zhang, Jianhui ^{[1
]}

Brik, Mikhail G. ^{[2
,3
,4
,5
]}

Liang, Hongbin ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem, KLGHEI Environm & Energy Chem, MOE Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Peoples R China

[2] Chongqing Univ Posts & Telecommun, Coll Sci, Chongqing 400065, Peoples R China

[3] Chongqing Univ Posts & Telecommun, CQUPT BUL Innovat Inst, Chongqing 400065, Peoples R China

[4] Univ Tartu, Inst Phys, EE-50411 Tartu, Estonia

[5] Jan Dlugosz Univ, Inst Phys, PL-42200 Czestochowa, Poland

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2022年 / 28卷 / 30期

基金：

中国国家自然科学基金;

关键词：

anti-counterfeiting; CaMgSi2O6; Eu2+; Mn2+; temperature sensing; LUMINESCENCE PROPERTIES; SINGLE-PHASE; PHOTOLUMINESCENCE; EMISSION; IONS;

D O I：

10.1002/chem.202200381

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Eu2+-, Mn2+- and Eu2+-Mn2+-doped CaMgSi2O6 phosphors have been prepared by a high-temperature solid-state reaction. Systematic investigation of the concentration- and temperature-dependent luminescence of Mn2+ showed that Mn2+ ions occupy two distinct sites in CaMgSi2O6. Electron-vibration interaction (EVI) analyses of Mn2+ ions revealed Huang-Rhys factors of 4.73 and 2.82 as well as effective phonon energies of 313 and 383 cm(-1) for the two sites. Eu2+-Mn2+ energy transfer is also discussed, and its efficiency is estimated by lifetime and luminescence spectra. The different thermal quenching behaviours of Eu2+ and Mn2+, the distinct emission colours of Eu2+ (blue, band peak at similar to 451 nm) and Mn2+ (yellow-red range, band peaks at similar to 583 and 693 nm) endow the co-doped samples with potential applications in luminescence thermometry and temperature-/excitation wavelength-responsive dual anti-counterfeiting.

引用

页数：9

共 40 条

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