Synthesis and spectroscopic investigation of blue-emitting (SrCa)2La(PO4)3O: Eu2+ phosphors
| Autor: | Maryam Sardar, Zhangyin Zhai, Chunlin Ma, Xuyi Tang, Xintian Bian, Jin Shi, Hui Wang, Ju Cheng |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Photoluminescence Organic Chemistry Analytical chemistry Phosphor 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry Blue emitting Concentration quenching Thermal stability Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Absorption (electromagnetic radiation) Spectroscopy Excitation Diode |
| Zdroj: | Optical Materials. 107:110104 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2020.110104 |
| Popis: | A novel broadband (SrCa)2La(PO4)3O: Eu2+ phosphor was successfully synthesized by the conventional high-temperature solid-state reaction. The samples are of phase purity demonstrated by XRD analysis. The photoluminescence properties of the (SrCa)2La(PO4)3O: Eu2+ phosphor were investigated systematically. Under the excitation of 365 nm near-ultraviolet light, the phosphors exhibit absorption in the ultraviolet–visible spectral region of 280–420 nm and show an intense asymmetric broadband blue emission peaking at around 460 nm. The different crystallographic sites of Eu2+ in (SrCa)2La(PO4)3O: Eu2+ phosphors have been verified via the photoluminescence properties. The concentration quenching mechanism, decay property, and thermal stability of the phosphor have been discussed in detail. The investigation results indicate that the as-prepared (SrCa)2La(PO4)3O: Eu2+ phosphor will have application potential in near-ultraviolet pumped white light-emitting diodes. |
| Databáze: | OpenAIRE |
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