Abstract
Eu3+-doped Sr3Ga2O5Cl2 phosphors were synthesized successfully via a two-step solid-state reaction method. Phase purity and morphology of the phosphor were confirmed by XRD and SEM techniques. In the excitation spectra of Sr3Ga2O5Cl2:Eu3+ phosphor, the broad excitation band centering at 310 nm is due to the combination of charge transfer from Eu3+→O2− and host absorption. And it matches well the emission wavelength from UV LEDs. Sr3Ga2O5Cl2:Eu3+ phosphors show a bright orange–red luminescence under excitation with 301 nm. However, concentration quenching of Eu3+ in Sr3Ga2O5Cl2:Eu3+ occurs at a low content of 0.07 in this work. The quenching mechanism of Sr3Ga2O5Cl2:Eu3+ was discussed in detail on the basis of the experimental results.
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This work is supported by the National Natural Science Foundation of China (No. 21271049).
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Wang, Z., Hu, Y., Zhang, S. et al. Photoluminescence properties of a novel red phosphor Sr3Ga2O5Cl2:Eu3+ . Appl. Phys. A 122, 76 (2016). https://doi.org/10.1007/s00339-015-9587-0
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DOI: https://doi.org/10.1007/s00339-015-9587-0