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Structural and photophysical studies of tungsten phosphate glasses doped with rare earth ions and metallic nanoparticles

Grant number: 13/24064-8
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): June 01, 2014
Effective date (End): May 31, 2016
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Andrea Simone Stucchi de Camargo Alvarez Bernardez
Grantee:Mohammad Reza Dousti
Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass, AP.CEPID


The binary system NaPO3-WO3 has been widely studied for its specific properties of photochromism and non-linear absorption. The controlled growth of metallic nanoparticles in glasses is also a very interesting, innovative and current research theme since they can aggregate new properties to the glasses due to their characteristic surface plasmon resonance (SPR). For instance, SPR can enhance the non-linear optical properties and the luminescence efficiency of trivalent rare earth ions - important laser emitters, increase the intensity of Raman scattering and add different thermal properties to the samples. Recently, some collaborators have successfully prepared homogeneous and transparent glasses of sodium polyphosphate and tungsten oxide, in the binary system NaPO3-WO3, with WO3 concentrations of 30, 40 and 50 mol% and containing Au, Pt and Ag nanoparticles. The characteristic SPR bands of each nanoparticle were observed in the UV-VIS spectral region for all the studied samples. The samples presented different thermal behavior when compared to those undoped, such as lower glass transition temperature Tg values and the shift of crystallization peak Tx to lower temperatures suggesting that the nanoparticles act as seeds for volumetric crystallization. Raman studies suggested that the sample doped with Au nanoparticles could be potential candidates for Surface Enhanced Raman Spectroscopy (SERS) due to overlap of Raman and SPR bands. In this project, we intend to further explore these systems with the addition of trivalent rare earth (RE) ions to the glasses. On one side, we intend to investigate the structure of the undoped NaPO3-WO3 samples as a function of composition through solid state NMR of the component nuclei 23Na and 31P (183W has very low sensitivity, but if possible will also be measured). Once selection can be made of the most favorable composition to host the metallic nanoparticle and rare-earth ions, different sets of samples with varying concentration of NPs and RE will be prepared, so as to allow systematic photophysical studies. The phenomenon of luminescence enhancement by SPR will be investigated for samples doped with different ions (Eu3+, Er3+, Nd3+).

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Scientific publications (14)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DOUSTI, MOHAMMAD REZA; AMJAD, RAJA JUNAID. Enhanced green emission of terbium-ions-doped phosphate glass embedding metallic nanoparticles. JOURNAL OF NANOPHOTONICS, v. 9, . (13/24064-8)
REZA DOUSTI, M.; AMJAD, RAJA J.. Spectroscopic properties of Tb3+-doped lead zinc phosphate glass for green solid state laser. Journal of Non-Crystalline Solids, v. 420, p. 21-25, . (13/24064-8)
MOLLA, ATIAR R.; RODRIGUES, ALISSON M.; SINGH, SHIV PRAKASH; LANCELOTTI, RICARDO FELIPE; ZANOTTO, EDGAR D.; RODRIGUES, ANA C. M.; DOUSTI, MOHAMMAD REZA; DE CAMARGO, ANDREA S. S.; MAGON, CLAUDIO JOSE; ALMEIDA SILVA, IGOR D'ANCIAES. Crystallization, mechanical, and optical properties of transparent, nanocrystalline gahnite glass-ceramics. Journal of the American Ceramic Society, v. 100, n. 5, p. 1963-1975, . (14/20865-9, 13/24064-8, 13/07793-6)
REZA DOUSTI, M.; AMJAD, R. J.; HOSSEINIAN, R. S.; SALEHI, M.; SAHAR, M. R.. Photoluminescence study of Sm3+-Yb3+ co-doped tellurite glass embedding silver nanoparticles. Journal of Luminescence, v. 159, p. 100-104, . (13/24064-8)
DA SILVA, L. N. LINDOLFO; TORQUATO, ALISSON; DE ASSIS JR, I. NUNES; DOUSTI, M. REZA. Spectroscopic study of Er3+-doped zinc-tellurite glass and opaque glass-ceramic. SOLID STATE SCIENCES, v. 112, . (13/24064-8)
DOUSTI, M. R.; POIRIER, G. Y.; DE CAMARGO, A. S. S.. Tungsten sodium phosphate glasses doped with trivalent rare earth ions (Eu3+, Tb3+, Nd3+ and Er3+) for visible and near-infrared applications. Journal of Non-Crystalline Solids, v. 530, . (13/24064-8, 13/07793-6)
REZA DOUSTI, M.; MOLLA, ATIAR R.; RODRIGUES, ANA CANDIDA M.; DE CAMARGO, ANDREA S. S.. Eu3+ and Ce3+ co-doped aluminosilicate glasses and transparent glass-ceramics containing gahnite nanocrystals. Optical Materials, v. 69, p. 372-377, . (13/24064-8, 13/07793-6)
AMJAD, RAJA J.; DOUSTI, M. R.; IQBAL, AZMAT; HUSSAIN, SYED ZAJIF; SAHAR, M. R.; SHAUKAT, S. F.. Influence of silver nanoparticles on the luminescence dynamics of Dy3+ doped amorphous matrix. MEASUREMENT, v. 74, p. 87-91, . (13/24064-8)
REZA DOUSTI, M.; POIRIER, GAEL YVES; STUCCHI DE CAMARGO, ANDREA SIMONE. Structural and spectroscopic characteristics of Eu3+-doped tungsten phosphate glasses. Optical Materials, v. 45, p. 185-190, . (13/24064-8, 13/07793-6)
REZA DOUSTI, M.; POIRIER, GAEL Y.; AMJAD, RAJA J.; DE CAMARGO, ANDREA S. S.. Luminescence quenching versus enhancement in WO3-NaPO3 glasses doped with trivalent rare earth ions and containing silver nanoparticles. Optical Materials, v. 60, p. 331-340, . (13/24064-8, 15/08434-5, 13/07793-6)
AMJAD, RAJA J.; DOUSTI, M. R.; SAHAR, M. R.. Spectroscopic investigation and Judd-Ofelt analysis of silver nanoparticles embedded Er3+-doped tellurite glass. CURRENT APPLIED PHYSICS, v. 15, n. 1, p. 1-7, . (13/24064-8)
DOUSTI, M. R.; AMJAD, R. J.; SAHAR, M. R.; ZABIDI, Z. M.; ALIAS, A. N.; DE CAMARGO, A. S. S.. Er3+-doped zinc tellurite glasses revisited: Concentration dependent chemical durability, thermal stability and spectroscopic properties. Journal of Non-Crystalline Solids, v. 429, p. 70-78, . (13/24064-8, 13/07793-6)
REZA DOUSTI, M.. Origins of the broadening in 1.5 mu m emission of Er3+-doped glasses. Journal of Molecular Structure, v. 1100, p. 415-420, . (13/24064-8)

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