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- W2012546908 abstract "In Al2O3 rich Ba-aluminate: Eu phosphors a green luminescence band involving Eu is found next to the blue Eu2+-luminescence. The green band is ascribed to associates of Eu and oxygen ions at Ba sites. These OBa ions also influence the concentration quenching behaviour of the Ba aluminate with high Eu content. The drop in the quantum efficiency of Ba-aluminate: Eu2+ on decreasing the Eu content of phosphors is not related to the presence of OBa. It is explained by the presence of Ba-vacancies. No green luminescence was observed in Mg-rich β-alumina type Eu2+ phosphors. Also, the quenching of the luminescence at higher Eu concentrations is less. Most probably, Mg2+ ions, positioned in between OBa and Eu2+, block the interaction between last-named ions." @default.
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- W2012546908 date "1978-06-01" @default.
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- W2012546908 title "Effect of non-stoichiometry on the luminescence of Eu2+-doped aluminates with the β-alumina-type crystal structure" @default.
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- W2012546908 doi "https://doi.org/10.1016/0022-2313(78)90032-7" @default.
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