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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 ...
- Elsevier BV,2016
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:kth-175601
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175601URI
- https://doi.org/10.1016/j.jlumin.2015.08.059DOI
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- Language:English
- Summary in:English
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- QC 20151103
- 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
- TEKNIK OCH TEKNOLOGIER Nanoteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Nano-technology hsv//eng
- Chemical synthesis
- Luminescence
- Microstructure
- Optical properties
- Phosphors
- Rare earth compounds
- Calcination
- Chemical compounds
- Crystallite size
- Electron microscopy
- Fluorescence
- Heavy metals
- High resolution transmission electron microscopy
- Light emission
- Photoluminescence
- Powder metals
- Scanning electron microscopy
- Structural properties
- Synthesis (chemical)
- Transmission electron microscopy
- Urea
- X ray powder diffraction
- Calcination temperature
- Luminescence properties
- Luminescence quenching
- Narrow size distributions
- Photoluminescence intensities
- Photoluminescence properties
- Structural characteristics
- Ultraviolet excitations
- Europium
Added entries (persons, corporate bodies, meetings, titles ...)
- Golestani-Fard, F. (author)
- Sarpoolaky, H. (author)
- Vogt, CarmenKTH,Biomedicinsk fysik och röntgenfysik(Swepub:kth)u1iann4b (author)
- Vasileva, ElenaKTH,Optik och Fotonik, OFO(Swepub:kth)u1l8jjyo (author)
- Mensi, MounirKTH,Material- och nanofysik(Swepub:kth)u1gtxrh3 (author)
- Popov, SergeiKTH,Optik och Fotonik, OFO(Swepub:kth)u1fs8je2 (author)
- Toprak, Muhammet S.KTH,Funktionella material, FNM(Swepub:kth)u1u3m5a2 (author)
- KTHMaterial- och nanofysik (creator_code:org_t)
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- In:Journal of Luminescence: Elsevier BV169, s. 1-80022-23131872-7883
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