Limin Fang, Zhendong Hao, Liangliang Zhang, Hao Wu, Huajun Wu, Guohui Pan, Jiahua Zhang. Luminescence Properties of Broadband Near-Infrared δ-Sc4Zr3O12∶Cr3+ Phosphors[J]. Laser & Optoelectronics Progress, 2021, 58(15): 1516008
- Laser & Optoelectronics Progress
- Vol. 58, Issue 15, 1516008 (2021)
Fig. 1. Crystal structure and characterization of Sc4Zr3O12∶Cr. (a)(b) XRD patterns; (c) crystal structure of Sc4Zr3O12
Fig. 2. Diffuse reflectance spectra of Sc4Zr3O12∶xCr
Fig. 3. Luminescence of Sc4Zr3O12∶Cr. (a) Excitation spectra; (b) emission spectra; (c) relationship between Cr mole fraction and emission intensity; (d) Gaussian fitting resluts for the PLE and PL spectra
Fig. 4. Dependence of crystal field parameters and Stokes shift of 4T1 level on ratio of C/B
Fig. 5. Crystal field parameters and Tanabe-Sugano diagram
Fig. 6. Luminescence decay curves of Sc4Zr3O12∶Cr
Fig. 7. Temperature characteristic of Sc4Zr3O12∶Cr. (a) Temperature-dependent emission spectra; (b) emission peak position of temperature-dependent spectra ; (c) integral intensity of temperature-dependent emission spectra; (d) plot of ln(I0/I-1) versus 1/T
Fig. 8. NIR pc-LED fabricated by CaMgSi2O6∶Cr. (a) Luminescent spectra of pc-LED; (b) NIR luminescent spectra of pc-LED; (c) photoelectric efficiency of pc-LED; (d) output power ratio of pc-LED
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Table 1. Peak position of excitation spectra and emission spectra
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Table 2. Zero phonon line position of energy level 4T2 and 2E
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