Abstract
Strong blue cooperative up-conversion emission around 475 nm has been observed in Yb3+-doped hexagonal NaYF4. The influence of concentration of the Yb3+ ion on the luminescence intensity is investigated. It is found that the sample shows the strongest cooperative luminescence when the Yb3+ ion concentration is 75%. The investigation shows that hexagonal NaYbF4 is an efficient blue up-converted phosphor, which might be potentially applicable in three-dimensional solid-state fluorescence display.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (No.: 10674113), Program for New Century Excellent Talents in University (NCET-06-0707), Hunan Provincial Natural Science Foundation of China (No.: 06JJ50006), and partially by Scientific Research Fund of Hunan Provincial Education Department (Nos.: 06A071 and 07B073) and the Open Project Program of Low Dimensional Materials &Application Technology (Xiangtan University) of Ministry of Education of China (No. KF0713).
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Wang, X., Xiao, S., Yang, X. et al. Highly efficient cooperative up-conversion of Yb3+ in NaYF4 . J Mater Sci 43, 1354–1356 (2008). https://doi.org/10.1007/s10853-007-2266-6
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DOI: https://doi.org/10.1007/s10853-007-2266-6