| Autor: |
Li, Chengren, Guo, Chunlai, Wang, Jianmin, Zhao, Fei, Zhang, Zhen, Zhao, Qianyun, Cui, Jinyi |
| Předmět: |
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| Zdroj: |
European Journal of Inorganic Chemistry; Jul2024, Vol. 27 Issue 19, p1-7, 7p |
| Abstrakt: |
A series of BaLaAl3O7 : xEu3+ nanophosphors have been prepared by the high‐temperature solid state reaction method. The XRD and SEM characterization results present that there exists a slight influence on the crystal structure and the average particle size of the nanophosphors while the Eu3+ ions are doped into the matrix. The intense and narrow red photoluminescence spectra have been measured under the ultraviolet excitation and there are two optimal Eu3+ concentrations of 0.8 and 12 mol %, respectively, and the intensity of the former is stronger than that of the latter. Furthermore, the mechanoluminescence phenomena with the same color are also observed when the samples are scratched with a pen. The calculated results based on the measurements of thermoluminescence spectra reveal that the total initial concentration of trapped carriers of BaLaAl3O7 : 12Eu3+ nanophosphors is larger than that of BaLaAl3O7 : 0.8Eu3+ sample, which causes the change trend of ML intensity to be opposite to that of PL intensity even though both have the same Eu3+ doping concentrations. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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