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The influence on intrinsic light emission of calcium tungstate and molybdate powders by multivalence Pr codoping

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Abstract

For trivalent praseodymium (Pr3+) and quadrivalent praseodymium (Pr4+) codoped CaMO4 (M = W, Mo) powders, the luminescence propriety of matrix is obviously influenced by carrier concentration. The light emission intensity of CaWO4 matrix decreases exponentially with increasing of Pr concentration because oxygen-deficient (\(\mathrm{WO}_{3}\cdot V_{\mathrm{O}}^{\bullet \bullet}\)) obtains an electron supplied by Pr3+ (5d). However, the light emission intensity of CaMoO4 is enhanced by Pr codoping because the quasi-free electrons increase the probability of radiative combination. The difference of photoluminescence properties in the two materials are attributed to the bonding character of M and O in the CaMO4 structure.

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Authors and Affiliations

  1. School of Physics and Nuclear Energy Engineering, Beihang University, Beijing, 100191, China

    Fang Zhu, Zhisong Xiao, Lu Yan, Feng Zhang & Anping Huang

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  1. Fang Zhu
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  2. Zhisong Xiao
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  3. Lu Yan
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  4. Feng Zhang
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  5. Anping Huang
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Correspondence to Zhisong Xiao.

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Zhu, F., Xiao, Z., Yan, L. et al. The influence on intrinsic light emission of calcium tungstate and molybdate powders by multivalence Pr codoping. Appl. Phys. A 101, 689–693 (2010). https://doi.org/10.1007/s00339-010-5950-3

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  • DOI: https://doi.org/10.1007/s00339-010-5950-3

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