Synthesis of Hexagonal Yb3+,Er3+-Doped NaYF4 Nanocrystals at Low Temperature
DC Element | Wert | Sprache |
---|---|---|
dc.contributor.author | Schaefer, Helmut | |
dc.contributor.author | Ptacek, Pavel | |
dc.contributor.author | Eickmeier, Henning | |
dc.contributor.author | Haase, Markus | |
dc.date.accessioned | 2021-12-23T16:05:17Z | - |
dc.date.available | 2021-12-23T16:05:17Z | - |
dc.date.issued | 2009 | |
dc.identifier.issn | 1616301X | |
dc.identifier.uri | https://osnascholar.ub.uni-osnabrueck.de/handle/unios/6898 | - |
dc.description.abstract | Nanocrystals of NaYF4 doped with Yb3+ and Er3+ are synthesized in oleylamine using Y-2(CO3)(3), Yb-2(CO3)(3), Er-2(CO3)(3), Na2CO3, a NH4F as precursors. in contrast to other starting materials normally used for such syntheses, these precursors react even at room temperature to form hexagonal-phase (beta-phase) NaYF4:ErYb nanoparticles. Cubic-phase (alpha-phase) NaYF4:Yb,Er particles are formed only at elevated temperatures (>250 degrees C). The formation of the cubic phase at high temperatures can be suppressed by replacing pure oleylamine with oleic acid/oleylamine mixture. Under optimized reaction conditions, particles with an average particle size of about 7 nm are generated in 84% yield. Heat treatment (30 min, 280 degrees C) of the particles significantly increases the luminescence efficiency. A transparent solution of the heat-treated, nanometer-sized phosphor in toluene shows intense visible light emission upon excitation in the near infrared. | |
dc.language.iso | en | |
dc.publisher | WILEY-V C H VERLAG GMBH | |
dc.relation.ispartof | ADVANCED FUNCTIONAL MATERIALS | |
dc.subject | Chemistry | |
dc.subject | Chemistry, Multidisciplinary | |
dc.subject | Chemistry, Physical | |
dc.subject | CORE | |
dc.subject | ENHANCEMENT | |
dc.subject | ER3+ | |
dc.subject | Materials Science | |
dc.subject | Materials Science, Multidisciplinary | |
dc.subject | NANOPARTICLES | |
dc.subject | Nanoscience & Nanotechnology | |
dc.subject | NAYF4-YB,ER | |
dc.subject | PHASE | |
dc.subject | PHOSPHORS | |
dc.subject | Physics | |
dc.subject | Physics, Applied | |
dc.subject | Physics, Condensed Matter | |
dc.subject | QUANTUM DOTS | |
dc.subject | Science & Technology - Other Topics | |
dc.subject | SPECTROSCOPY | |
dc.subject | UP-CONVERSION LUMINESCENCE | |
dc.title | Synthesis of Hexagonal Yb3+,Er3+-Doped NaYF4 Nanocrystals at Low Temperature | |
dc.type | journal article | |
dc.identifier.doi | 10.1002/adfm.200900642 | |
dc.identifier.isi | ISI:000271132700009 | |
dc.description.volume | 19 | |
dc.description.issue | 19 | |
dc.description.startpage | 3091 | |
dc.description.endpage | 3097 | |
dc.contributor.orcid | 0000-0001-5906-3354 | |
dc.contributor.orcid | 0000-0002-9686-8810 | |
dc.contributor.researcherid | D-7919-2011 | |
dc.identifier.eissn | 16163028 | |
dc.publisher.place | POSTFACH 101161, 69451 WEINHEIM, GERMANY | |
dcterms.isPartOf.abbreviation | Adv. Funct. Mater. | |
crisitem.author.dept | Institut für Chemie neuer Materialien | - |
crisitem.author.deptid | institute11 | - |
crisitem.author.orcid | 0000-0002-9686-8810 | - |
crisitem.author.parentorg | FB 05 - Biologie/Chemie | - |
crisitem.author.grandparentorg | Universität Osnabrück | - |
crisitem.author.netid | HaMa954 | - |
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geprüft am 05.06.2024