Abstract
Three-dimensional (3D) sphere-like Eu3+-doped white light lutetium tungstate phosphors have been fabricated by the cationic surfactant cetyltrimethyl ammonium bromide (CTAB)-assisted hydro-thermal method, which presents a diameter of ~2-μm morphology assembled by nanoflakes with a length of 100 to ~200 nm. The results demonstrate that CTAB, suitable pH values, reaction time, and reaction temperature are all essential for the formation of lutetium tungstate microspheres. Photoluminescence measurement indicates that lutetium tungstate microspheres show a broad O-W Charge transfer state (CTS) transition and the characteristic emission of Eu3+ at ~591 and ~611 nm.
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The authors gratefully acknowledge the financial support from the National Science Foundation of China (No. 209 1100) and Program for New Century Excellent Talents in University (NCET-08-0398).
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Lei, F., Yan, B. Surfactant-assisted hydrothermal process, shape-control, and photoluminescence of Eu3+-doped lutetium tungstate microspheres. Journal of Materials Research 26, 88–95 (2011). https://doi.org/10.1557/jmr.2010.42
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DOI: https://doi.org/10.1557/jmr.2010.42