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ELECTRONIC STRUCTURE AND OPTICAL PROPERTIES OF A PHOTOLUMINESCENT TANTALITE: EuKNaTaO5

Author

Listed:
  • XIAOLI ZHANG

    (Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, People's Republic of China)

  • GUOREN ZHANG

    (Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, People's Republic of China)

  • TING JIA

    (Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, People's Republic of China)

  • YING GUO

    (Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, People's Republic of China)

  • ZHI ZENG

    (Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, People's Republic of China)

Abstract

The electronic structure and linear optical properties of luminescent materialEuKNaTaO5are investigated by employing full-potential linear augmented plane wave method. Our results show highly localizedEu4fstates which pinned in the energy range below the unoccupiedTa5dstates and over the occupiedO2pstates. The optical spectra are analyzed and interpreted in terms of the electronic structure. It is found thatEuions absorb the major parts of the incident energy below 3.3 eV. This is in accordance with the experimental result thatEuKNaTaO5phosphor is efficient under the excitation of 535 nm (2.3 eV) visible part of the spectrum. The linear optical properties are found to be anisotropic.

Suggested Citation

  • Xiaoli Zhang & Guoren Zhang & Ting Jia & Ying Guo & Zhi Zeng, 2011. "ELECTRONIC STRUCTURE AND OPTICAL PROPERTIES OF A PHOTOLUMINESCENT TANTALITE: EuKNaTaO5," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 22(03), pages 263-269.
    • Handle: RePEc:wsi:ijmpcx:v:22:y:2011:i:03:n:s0129183111016208
    DOI: 10.1142/S0129183111016208
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