Tuerxun·Ayinuremu, Lei Wang, Jilili·Subiyinuer, Sidike·Aierken. Effect of Charge-Compensator Li+ Doping on Luminescence Performance of CaMgSiO4∶Sm3+ Red-Emitting Phosphor[J]. Laser & Optoelectronics Progress, 2022, 59(13): 1316002
- Laser & Optoelectronics Progress
- Vol. 59, Issue 13, 1316002 (2022)
Fig. 1. Phase analysis of sample. (a) XRD patterns of CaMgSiO4∶2% Sm3+, y% Li+(y = 0, 0.5, 1, 1.5, 2); (b) crystal structure of CaMgSiO4
Fig. 2. Variation of unit cell parameters of CaMgSiO4∶2% Sm3+, y% Li+(y = 0, 0.5, 1, 1.5, 2) with doping concentration of Li+. (a) Variation of a; (b) variation of b; (c) variation of c; (d) variation of v
Fig. 3. Morphology analysis of CaMgSiO4∶2% Sm3+ phosphor. (a)~(b) SEM image; (c) EDS and mol fraction of atoms of each element
Fig. 4. Fluorescence spectra of CaMgSiO4∶x% Sm3+(x = 1, 1.5, 2, 2.5) phosphor samples. (a) Excitation spectra; (b) emission spectra
Fig. 5. Concentration quenching mechanism diagram of CaMgSiO4∶ x% Sm3+(x = 1, 1.5, 2, 2.5)
Fig. 6. Fluorescence performance of CaMgSiO4∶2% Sm3+, y% Li+. (a) Emission spectra of CaMgSiO4∶2% Sm3+ and CaMgSiO4∶2% Sm3+, 1.5% Li+ phosphors; (b) relationship between integrated area at 601 nm in emission spectrum of CaMgSiO4∶2% Sm3+, y% Li+ and concentration of Li+
Fig. 7. Life decay curves and emission mechanism. (a) Life decay curves of CaMgSiO4∶2% Sm3+, y% Li+ samples at 601 nm; (b) emission mechanism of CaMgSiO4∶Sm3+ phosphors
Fig. 8. Color coordinates of CaMgSiO4∶2% Sm3+, 1.5% Li+ sample, illustrated as photos of 365 nm excitation of fluorescent lamps and near-ultraviolet lamps
Fig. 9. Normalized peak intensities of CaMgSiO4∶2% Sm3+, 1.5% Li+ sample as a function of temperature
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Table 1. Main raw materials of CaMgSiO4∶Sm3+, Li+ phosphor
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Table 2. Test method and instrument parameters
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