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Up-conversion luminescence of Er3+ doped and Er3+/Yb3+ co-doped YTaO4

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  • Condensed Matter Physics
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Chinese Science Bulletin

Abstract

The synthesis and up-conversion luminescent properties of YTaO4:Er3+ and YTaO4:Er3+/Yb3+ are reported for the first time. According to the measurement results of up-conversion spectra, Yb3+ co-doping can remarkably enhance the green (2H11/2/4S3/2→4I15/2) and red (4F9/2→4I15/2) emissions, but depress the infrared emission (4I9/2→4I15/2). With the increase of the Yb3+ concentration, the intensity of green emission increases, after that, when the Yb3+ concentration increases continuously, the intensity of green emission decreases, while those of the red and infrared emissions increase and decrease alternately. In addition, the up-conversion mechanisms of Er3+ doped and Er3+/Yb3+ co-doped YTaO4 are also discussed. It is found that the transform of up-conversion mechanism from two-step energy transfer to cooperating sensitization takes place when Yb3+ concentration is increased up to 12 mol%. With the further increase of Yb3+ concentration, the energy-back-transfer gradually becomes the dominant up-conversion mechanism, which results in the quenching of the green emission and slight increasing of the red and infrared emissions.

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Authors and Affiliations

  1. Optoelectronic Technology Institute, Dalian Maritime University, Dalian, 116026, China

    Pang Tao & Cao WangHe

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  1. Pang Tao
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  2. Cao WangHe
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Correspondence to Cao WangHe.

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Supported by the National Natural Science Foundation of China (Grant No. 10374011)

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Pang, T., Cao, W. Up-conversion luminescence of Er3+ doped and Er3+/Yb3+ co-doped YTaO4 . Chin. Sci. Bull. 53, 178–182 (2008). https://doi.org/10.1007/s11434-008-0024-z

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  • DOI: https://doi.org/10.1007/s11434-008-0024-z

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