Sökning: onr:"swepub:oai:DiVA.org:kth-175601" >
Microwave synthesis...
-
Khachatourian, Malek AdrineKTH,Material- och nanofysik,Iran University of Science and Technology, Iran
(författare)
Microwave synthesis of Y2O3:Eu3+ nanophosphors : A study on the influence of dopant concentration and calcination temperature on structural and photoluminescence properties
- Artikel/kapitelEngelska2016
Förlag, utgivningsår, omfång ...
-
Elsevier BV,2016
-
printrdacarrier
Nummerbeteckningar
-
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
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:ref swepub-contenttype
-
Ämneskategori:art swepub-publicationtype
Anmärkningar
-
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.
Ämnesord och genrebeteckningar
-
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
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Golestani-Fard, F.
(författare)
-
Sarpoolaky, H.
(författare)
-
Vogt, CarmenKTH,Biomedicinsk fysik och röntgenfysik(Swepub:kth)u1iann4b
(författare)
-
Vasileva, ElenaKTH,Optik och Fotonik, OFO(Swepub:kth)u1l8jjyo
(författare)
-
Mensi, MounirKTH,Material- och nanofysik(Swepub:kth)u1gtxrh3
(författare)
-
Popov, SergeiKTH,Optik och Fotonik, OFO(Swepub:kth)u1fs8je2
(författare)
-
Toprak, Muhammet S.KTH,Funktionella material, FNM(Swepub:kth)u1u3m5a2
(författare)
-
KTHMaterial- och nanofysik
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Journal of Luminescence: Elsevier BV169, s. 1-80022-23131872-7883
Internetlänk
Hitta via bibliotek
Till lärosätets databas