Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/10814
Title: Structural characterization and photoluminescence in the rare earth-free oxy-fluoride anti-perovskites Sr3−xBi2x/3AlO4F and Sr3−xBi2x/3GaO4F
Authors: Quilty, CD
Avdeev, M
Driskell, JD
Sullivan, E
Keywords: Perovskites
Rare earths
Photoluminescence
X-ray diffraction
Neutron diffraction
Phosphors
Issue Date: 1-Mar-2017
Publisher: Royal Society of Chemistry
Citation: Quilty, C. D., Avdeev, M., Driskell, J. D., & Sullivan, E. (2017). Structural characterization and photoluminescence in the rare earth-free oxy-fluoride anti-perovskites Sr3−xBi2x/3AlO4F and Sr3−xBi2x/3GaO4F. Dalton Transactions, 46(12), 4055-4065. doi:10.1039/C7DT00310B
Abstract: The activator Bi3+ has been successfully incorporated into the anti-perovskite oxy-fluoride host lattice Sr3MO4F (M = Al, Ga) to form rare earth-free phosphors of the composition Sr3−xBi2x/3AlO4F, 0 ≤ x ≤ 0.1, and Sr3−xBi2x/3GaO4F, 0 ≤ x ≤ 0.048. These phases absorb in the UV region (λex = 240–326 nm) and exhibit broad emission in the blue region of the visible spectrum (λem = 446.5–455 nm). The optimum compositions for maximum photoluminescent intensity were determined to be Sr2.976Bi0.016AlO4F and Sr2.976Bi0.016GaO4F before concentration quenching occurs. Full structural characterization based upon PXRD and NPD data were performed with DFT calculations suggesting that Bi3+ ions are preferentially incorporated on the ten coordinate Sr(1) site. © The Royal Society of Chemistry 2017
URI: https://doi.org/10.1039/C7DT00310B
https://apo.ansto.gov.au/dspace/handle/10238/10814
ISSN: 1477-9234
Appears in Collections:Journal Articles

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