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Microwave synthesis...
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Khachatourian, Malek AdrineKTH,Material- och nanofysik,Iran University of Science and Technology, Iran
(author)
Microwave synthesis of Y2O3:Eu3+ nanophosphors : A study on the influence of dopant concentration and calcination temperature on structural and photoluminescence properties
- Article/chapterEnglish2016
Publisher, publication year, extent ...
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Elsevier BV,2016
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-175601
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175601URI
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https://doi.org/10.1016/j.jlumin.2015.08.059DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20151103
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Red fluorescent emitting monodispersed spherical Y2O3 nanophosphors with different Eu3+ doping concentrations (0-13 mol%) are synthesized by a novel microwave assisted urea precipitation, which is recognized as a green, fast and reproducible synthesis method. The effect of Eu3+ doping and calcination temperature on the structural characteristics and luminescence properties of particles is investigated in detail. The as prepared powders have (Y,Eu)(OH)(CO3) structure which converts to Y2O3:Eu3+ from 500 °C and become crystalline at higher temperatures. The crystallite size of nanophosphors increased from 15 nm to 25 nm as the calcination temperature increased from 700 °C to 1050 °C. The efficient incorporation of Eu3+ ions in cubic Y2O3 host matrix is confirmed by the calculated X-ray Powder diffraction (XRPD) structural parameters. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) micrographs show that the as obtained and calcined particles are spherical, monodispersed and non-agglomerated. The overall size of particles increases from 61±8 nm to 86±9 nm by increasing Eu3+ concentration from 0 mol% to 13 mol%. High resolution TEM revealed polycrystalline nature of calcined particles. The particles exhibit a strong red emission under ultraviolet (UV) excitation. The photoluminescence (PL) intensity of the peaks increases proportionally with Eu3+ concentration and the calcination temperature with no luminescence quenching phenomenon observed even for Y2O3:13%Eu3+. The fluorescent emission properties combined with the monodispersity and narrow size distribution characteristics make the Y2O3:Eu3+ heavy metal free nanophosphors applicable in fluorescence cell imaging and as fluorescence biolabels.
Subject headings and genre
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TEKNIK OCH TEKNOLOGIER Nanoteknik hsv//swe
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ENGINEERING AND TECHNOLOGY Nano-technology hsv//eng
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Chemical synthesis
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Luminescence
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Microstructure
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Optical properties
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Phosphors
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Rare earth compounds
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Calcination
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Chemical compounds
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Crystallite size
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Electron microscopy
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Fluorescence
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Heavy metals
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High resolution transmission electron microscopy
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Light emission
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Photoluminescence
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Powder metals
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Scanning electron microscopy
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Structural properties
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Synthesis (chemical)
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Transmission electron microscopy
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Urea
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X ray powder diffraction
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Calcination temperature
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Luminescence properties
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Luminescence quenching
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Narrow size distributions
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Photoluminescence intensities
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Photoluminescence properties
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Structural characteristics
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Ultraviolet excitations
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Europium
Added entries (persons, corporate bodies, meetings, titles ...)
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Golestani-Fard, F.
(author)
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Sarpoolaky, H.
(author)
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Vogt, CarmenKTH,Biomedicinsk fysik och röntgenfysik(Swepub:kth)u1iann4b
(author)
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Vasileva, ElenaKTH,Optik och Fotonik, OFO(Swepub:kth)u1l8jjyo
(author)
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Mensi, MounirKTH,Material- och nanofysik(Swepub:kth)u1gtxrh3
(author)
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Popov, SergeiKTH,Optik och Fotonik, OFO(Swepub:kth)u1fs8je2
(author)
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Toprak, Muhammet S.KTH,Funktionella material, FNM(Swepub:kth)u1u3m5a2
(author)
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KTHMaterial- och nanofysik
(creator_code:org_t)
Related titles
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In:Journal of Luminescence: Elsevier BV169, s. 1-80022-23131872-7883
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