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Journal of Materials Science
Erschienen in: Journal of Materials Science 4/2019

24.10.2018 | Chemical routes to materials

LaF3: Pr3+ hollow hexagon nanostructures via green and eco-friendly synthesis and their photoluminescence properties

Erschienen in: Journal of Materials Science | Ausgabe 4/2019

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Abstract

LaF3 nanocrystals (NCs) are usually used as good host matrix for down-conversion phosphors owing to their impressive photophysical properties. In this study, Pr3+-activated LaF3 with hollow hexagon nanostructures (HHNs) is achieved by a green and eco-friendly hydrothermal method without any catalyst, template, or surfactant. The pore structure of the LaF3 HHNs is greatly affected by the content of Pr3+ ions and hydrothermal reaction time. The LaF3: Pr3+ NCs excited by 467 nm light show strong emission peaks locating in visible light region (centered at 612 and 635 nm) and the first biological window region (existed in 689 and 721 nm), respectively. The relative photoluminescence (PL) intensity of LaF3: Pr3+ NCs from 20 to 60 °C (biological temperature) decreases slightly and decreases only 20% at 120 °C. The PL emission intensity could reach the maximal value with doping ~ 1.5% Pr3+ ions. Based on the outstanding photophysical properties, LaF3: Pr3+ NCs will be used for both warm white light-emitting diodes and bio-imaging.
Vorheriger Artikel Immobilization of new macrocyclic Schiff base copper complex on graphene oxide nanosheets and its catalytic activity for olefins epoxidation
Nächster Artikel In situ synthesis of energetic metal–organic frameworks [Cd5(Mtta)9]n film exhibiting excellent ignition capability

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Metadaten
Titel
LaF3: Pr3+ hollow hexagon nanostructures via green and eco-friendly synthesis and their photoluminescence properties
Publikationsdatum
24.10.2018
Erschienen in
Journal of Materials Science / Ausgabe 4/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-3042-5

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