Contribution of structural order-disorder to the green photoluminescence of $\mathrm{Pb}\mathrm{W}{\mathrm{O}}_{4}$

Contribution of structural order-disorder to the green photoluminescence of $Pb W O_{4}$

M. Anicete-Santos, E. Orhan, M. A. M. A. de Maurera, L. G. P. Simões, A. G. Souza, P. S. Pizani, E. R. Leite, J. A. Varela, Juan Andrés, A. Beltrán, and E. Longo

Phys. Rev. B 75, 165105 – Published 11 April 2007

Abstract

An intense and broad visible photoluminescence (PL) band was observed at room temperature in structurally disordered $Pb W O_{4}$ thin films. The scheelite lead tungstate $(Pb W O_{4})$ films prepared by the polymeric precursor method and annealed at different temperatures were structurally characterized by means of x-ray diffraction and atomic force microscopy analysis. Quantum-mechanical calculations showed that the local disorder of the network modifier (Pb) has a very important role in the charge transfer involved in the green PL emission. The experimental and theoretical results are in good agreement, both indicating that the generation of the intense visible PL band is related to simultaneous structural order and disorder in the scheelite $Pb W O_{4}$ lattice.

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Received 25 September 2006

DOI:https://doi.org/10.1103/PhysRevB.75.165105

Authors & Affiliations

M. Anicete-Santos^1,2,*, E. Orhan³, M. A. M. A. de Maurera⁴, L. G. P. Simões¹, A. G. Souza⁴, P. S. Pizani⁵, E. R. Leite¹, J. A. Varela⁶, Juan Andrés², A. Beltrán², and E. Longo⁶

¹LIEC, Department of Chemistry, Federal University of São Carlos (UFSCAR), P.O. Box 676, 13565-905, São Carlos, São Paulo, Brazil
²Departament de Ciències Experimentals, Universitat Jaume I, P.O. Box 224, 12080, Castelló, Spain
³Science des Procédés Céramiques et de Traitements de Surface, UMR CNRS 6638, Faculté des Sciences et Techniques, Université de Limoges, 87060 Limoges Cedex, France
⁴Department of Chemistry, Federal University of Paraíba, 58059-900, João Pessoa, Paraíba, Brazil
⁵Department of Physics, UFSCAR, P.O. Box 676, 13565-905, São Carlos, São Paulo, Brazil
⁶LIEC, Institute of Chemistry, UNESP, P.O. Box 355, 14801-907, Araraquara, São Paulo, Brazil

^*Electronic address: marcos@liec.ufscar.br

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Vol. 75, Iss. 16 — 15 April 2007

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Physical Review B

covering condensed matter and materials physics

Contribution of structural order-disorder to the green photoluminescence of $Pb W O_{4}$

M. Anicete-Santos, E. Orhan, M. A. M. A. de Maurera, L. G. P. Simões, A. G. Souza, P. S. Pizani, E. R. Leite, J. A. Varela, Juan Andrés, A. Beltrán, and E. Longo

Phys. Rev. B 75, 165105 – Published 11 April 2007

Abstract

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Physical Review B

covering condensed matter and materials physics

Contribution of structural order-disorder to the green photoluminescence of PbWO4

M. Anicete-Santos, E. Orhan, M. A. M. A. de Maurera, L. G. P. Simões, A. G. Souza, P. S. Pizani, E. R. Leite, J. A. Varela, Juan Andrés, A. Beltrán, and E. Longo

Phys. Rev. B 75, 165105 – Published 11 April 2007

Abstract

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Contribution of structural order-disorder to the green photoluminescence of $Pb W O_{4}$