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ELECTRONIC STRUCTURE AND OPTICAL PROPERTIES OF A PHOTOLUMINESCENT TANTALITE: EuKNaTaO₅

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

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GUOREN ZHANG

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

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TING JIA

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

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YING GUO

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

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, and

ZHI ZENG

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

Corresponding author.

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https://doi.org/10.1142/S0129183111016208Cited by:0 (Source: Crossref)

Abstract

The electronic structure and linear optical properties of luminescent material EuKNaTaO₅ are investigated by employing full-potential linear augmented plane wave method. Our results show highly localized Eu4f states which pinned in the energy range below the unoccupied Ta5d states and over the occupied O 2p states. The optical spectra are analyzed and interpreted in terms of the electronic structure. It is found that Eu ions absorb the major parts of the incident energy below 3.3 eV. This is in accordance with the experimental result that EuKNaTaO₅ phosphor 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.

Keywords:

PACS: 71.20.-b, 42.70.-a, 71.20.Eh, 42.79.Kr

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References

Appl. Phys. Lett. 85, 4187 (2004). Crossref, Web of Science, Google Scholar
M. Thomaset al., J. Solid State Chem. 182, 203 (2009). Crossref, Web of Science, ADS, Google Scholar
M. Nymanet al., J. Am. Chem. Soc. 131, 11652 (2009). Crossref, Web of Science, Google Scholar
Y. Zhouet al., J. Phys. Chem. 111, 10190 (2007). Web of Science, Google Scholar
B. Liuet al., Solid State Commun. 144, 484 (2007). Crossref, Web of Science, ADS, Google Scholar
C. H. Wenet al., J. Alloys Compd. 459, 107 (2008). Crossref, Web of Science, Google Scholar
C. C. Yuet al., J. Solid State Chem. 180, 3058 (2007). Crossref, Web of Science, ADS, Google Scholar
X. M. Liu and J. J. Lin, Lumin. 122-123, 700 (2007). Crossref, Web of Science, ADS, Google Scholar
V. Sivakumar and U. V. Varadaraju, J. Solid State Chem. 181, 3344 (2008). Crossref, Web of Science, ADS, Google Scholar
Y. Y. Hui and C.-F. Lin, Mater. Lett. 61, 3802 (2007). Crossref, Web of Science, Google Scholar
G. Gasparottoet al., J. Lumin. 128, 1606 (2008). Crossref, Web of Science, Google Scholar
I. P. Roofet al., J. Am. Chem. Soc. 131, 1607 (2009). Web of Science, Google Scholar
I. P. Roofet al., Chem. Mater. 21, 1955 (2009). Crossref, Web of Science, Google Scholar
P. Blaha et al. , WIEN2k: An Augmented Plane Wave Local Orbitals Program for Calculating Crystal Properties , ed. K. Schwarz ( Technische Universität Wien , Austria , 2001 ) . Google Scholar
S. Gao, Comput. Phys. Commun. 153, 190 (2003). Crossref, Web of Science, ADS, Google Scholar
K. Schwarz, J. Solid State Chem. 176, 319 (2003). Crossref, Web of Science, ADS, Google Scholar
A. Rubio-Ponce, A. Conde-Gallardo and D. Olguín, Phys. Rev. B 78, 035107 (2008). Crossref, Web of Science, Google Scholar
L. Wanget al., Solid State Commun. 148, 331 (2008). Crossref, Web of Science, ADS, Google Scholar
J. P. Perdew and Y. Wang, Phys. Rev. B 45, 13244 (1992); J. P. Perdew, K. Burke and M. Ernzerhof, Phys. Rev. Lett. 77, 3865 (1996) . Google Scholar
J. D. Jackson , Classical Electrodynamics , 2nd edn. ( John Wiley and Sons, Inc , New York , 1975 ) . Google Scholar