Journal of Inorganic Materials, Volume. 37, Issue 6, 676(2022)
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3. Excitation spectra of LiCaEu(WO4)3, NaCaEu(WO4)3 and KCaEu(WO4)3 phosphors monitored at 617 nm
4. Emission spectra of phosphors and intensity contrast diagram of phosphors
5. CIE chromaticity diagram of NaCaEu(WO4)3, Na0.7K0.3CaEu(WO4)3 and LiCaEu(WO4)3 phosphors
6. Decay curves of NaCaEu(WO4)3, Na0.7K0.3CaEu(WO4)3 and LiCaEu(WO4)3 phosphors (λ ex=395 nm, λ em=617 nm)
7. Emission spectra of phosphors at different temperatures (λ ex=395 nm) (a-c), plot of ln(I 0/IT- 1) versus 1/(kT ) (d) and schematic illustration of a configuration coordinate diagram of the thermal quenching process (e)
Table 1. Structure parameters of LiCaEu(WO4)3, NaCaEu(WO4)3 and KCaEu(WO4)3
View tableView in ArticleTable 1. Structure parameters of LiCaEu(WO4)3, NaCaEu(WO4)3 and KCaEu(WO4)3
Materials Crystal system Space group a=b/nm c/nm V/nm3 α=β=γ Rwp/% R/%p χ2 LiCaEu(WO4)3 Tetragonal I41/a 0.5230570(26) 1.1319686(43) 0.309694(8) 90° 8.61 7.66 2.438 NaCaEu(WO4)3 Tetragonal I41/a 0.5255477(32) 1.1393990(48) 0.314702(5) 90° 7.68 5.95 1.468 KCaEu(WO4)3 Tetragonal I41/a 0.5273337(35) 1.1479226(52) 0.319357(6) 90° 7.94 6.17 1.315
Table 2. CIE chromaticity coordinates and color purities of NaCaEu(WO4)3, Na0.7K0.3CaEu(WO4)3 and LiCaEu(WO4)3 phosphors
View tableView in ArticleTable 2. CIE chromaticity coordinates and color purities of NaCaEu(WO4)3, Na0.7K0.3CaEu(WO4)3 and LiCaEu(WO4)3 phosphors
Material CIE chromaticity coordinate Color purity/% x y NaCaEu(WO4)3 0.6580 0.341 96.07 Na0.7K0.3CaEu(WO4)3 0.661 0.338 96.83 LiCaEu(WO4)3 0.665 0.334 97.87
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Xufeng GUAN, Guifang LI, Yunge WEI.
Paper Information
Category: RESEARCH ARTICLE
Received: Jul. 7, 2021
Accepted: --
Published Online: Jan. 10, 2023
The Author Email: LI Guifang (gfli@mail.xidian.edu.cn)
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