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Reports Outline Ceramics Study Results from University of Agriculture (Effects of Er3+ :Ag codoping on structural and spectroscopic properties of...

July 8, 2014



Reports Outline Ceramics Study Results from University of Agriculture (Effects of Er3+ :Ag codoping on structural and spectroscopic properties of lead tellurite glass ceramics)

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators discuss new findings in Ceramics. According to news originating from Cluj Napoca, Romania, by VerticalNews correspondents, research stated, "Structural, spectroscopic and optical properties of lead tellurite glass ceramics doped with variable amounts of erbium ions and codoped with fixed amounts of silver (Ag2O or Ag metallic nanoparticles, AgNPs) have been studied. The investigation of the samples was performed by X-ray diffraction (XRD), Fourier transform infrared (FTIR), diffuse reflectance ultraviolet visible (DR-UV-vis) and photoluminescence (PL) spectroscopies."

Our news journalists obtained a quote from the research from the University of Agriculture, "The average unit-cell parameter, crystallite size and the quantitative ratio of the crystallographic phases in the samples were evaluated from the XRD data. FTIR spectroscopy data show that the glass ceramics network mainly consists of TeO3 and TeO4 structural units. The increase of the Er2O3 content determines a TeO3 ? TeO4 conversion but the process is also influenced by the nature of the codopant (Ag2O or AgNPs) present in the samples. The optical band gap (E-g(opt)) values, determined from the DR-UV vis spectra, decrease with increasing the erbium content of the samples. Photoluminescence spectroscopy measurements evidenced the important peaks located at around 430 nm and 708 nm due to the Pb2+ ions and at 525 and 547 nm due to the Er3+ ions present in the studied samples."

According to the news editors, the research concluded: "The Er3+:Ag codoping was found to produce antagonistic effects (quenching/enhancement) of the luminescence emission of Er3+ ions in the studied samples."

For more information on this research see: Effects of Er3+ :Ag codoping on structural and spectroscopic properties of lead tellurite glass ceramics. Ceramics International, 2014;40(7):11001-11007. Ceramics International can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Ceramics International - www.elsevier.com/wps/product/cws_home/405926)

The news correspondents report that additional information may be obtained from E. Culea, Univ Agr Sci & Vet Med, Cluj Napoca 400372, Romania. Additional authors for this research include I. Vida-Simiti, G. Borodi, E.N. Culea, R. Stefan and P. Pascuta.

Keywords for this news article include: Europe, Romania, Ceramics, Cluj Napoca

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Technology


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