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Ionic Liquid Based Approach to Luminescent LaPO 4 :Ce,Tb Nanocrystals: Synthesis, Characterization and Application
Author(s) -
Zharkouskaya Aksana,
Feldmann Claus,
Trampert Klaus,
Heering Wolfgang,
Lemmer Uli
Publication year - 2008
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200700892
Subject(s) - oleylamine , luminescence , chemistry , phosphor , nanocrystal , ionic bonding , nanotechnology , ionic liquid , polymer , phase (matter) , chemical engineering , quantum dot , optoelectronics , organic chemistry , materials science , ion , catalysis , engineering
LaPO 4 :Ce,Tb as a nanoscale phosphor is prepared via a microwave‐accelerated synthesis in ionic liquids. The underlying approach results in non‐agglomerated nanocrystals, 9–12 nm in size, and exhibiting quantum yields of 70 % (Tb‐related emission) and 90 % (Ce/Tb‐related emission). Based on the underlying concept of synthesis, application‐oriented aspects are focused. Driven by the addition of oleylamine, first, phase transfer from the polar phase of synthesis to non‐polar alkanes can be initiated. As a second aspect, dispersions of the title compound in ethanol are applied for ink‐jet printing of transparent luminescent layers on polymer substrates. Finally, ethanolic dispersions of LaPO 4 :Ce,Tb are used to realize a fully transparent dielectric barrier discharge (DBD) lamp as a prototype of a “luminescent window”. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)