Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 112, Issue 5, Pages 1312-1315Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp711699c
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High photoactivator concentration nanosheets Eu0.56Ta2O7 have been prepared by the soft chemical exfoliation reaction of the layered perovskite Li2-xHxEu0.56Ta2O7 with a tetrabutyl ammonium hydroxide aqueous solution. In-plane X-ray diffraction and TEM and AFM observation results indicate that the Eu0.56Ta2O7 nanosheet is crystalline and retains the layered perovskite structural feature of the bulk precursors. The most intense emission is observed from the D-5(0) -> F-7(2) transition of Eu3+. The intensity of this emission by the host excitation exceeds 18 times that by the direct Eu3+ excitation.
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