Synthesis and photoluminescence properties of La(Mg1-xNbx)O3:Mn4+ (x = 0.296 and 0.384) deep red-emitting phosphors
| Autor: | Yanshu Zhao, Renping Cao, Zuofu Hu, Wenhua Shao, Pan Liu, Fen Xiao, Ting Chen, Guotai Zheng |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Photoluminescence Doping Biophysics Analytical chemistry Phosphor 02 engineering and technology General Chemistry Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry Atomic and Molecular Physics and Optics 0104 chemical sciences Ion Emission spectrum Chromaticity 0210 nano-technology Luminescence |
| Zdroj: | Journal of Luminescence. 238:118248 |
| ISSN: | 0022-2313 |
| Popis: | In this work, we successfully synthesize La(Mg1-xNbx)O3:Mn4+ (x = 0.296 and 0.384) deep-red emitting phosphors by using high-temperature solid state method in air and investigate their crystal structures, morphologies, and luminescence properties. A broad excitation spectral band of La(Mg1-xNbx)O3:Mn4+ phosphors monitored at 705 nm can be observed in the region from 220 nm to 580 nm. La(Mg1-xNbx)O3:Mn4+ phosphors show a deep-red emission in the range of 640–760 nm with a peak at ~705 nm due to 2E → 4A2 transition of Mn4+ ions and the corresponding chromaticity coordinates are (0.7316, 0.22684). The concentration dependent emission spectra indicate that their optimal Mn4+ doping concentration is ~0.6 mol%. Their lifetime values decrease with increasing the Mn4+ doping concentration from 0.2 mol% to 1.0 mol%. The experimental results are helpful for the research on luminescence property of Mn4+ ions. |
| Databáze: | OpenAIRE |
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