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Assembly of Layered Rare‐Earth Hydroxide Nanosheets and SiO 2 Nanoparticles to Fabricate Multifunctional Transparent Films Capable of Combinatorial Color Generation
Author(s) -
Lee ByungIl,
Lee Eunsu,
Byeon SongHo
Publication year - 2012
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201200295
Subject(s) - materials science , luminescence , hydroxide , transmittance , nanoparticle , phosphor , doping , nanotechnology , layer (electronics) , colloid , optoelectronics , chemical engineering , engineering
Abstract Colloidal solutions of layered rare‐earth hydroxide nanosheets provide a simple route to deposit ultra thin luminescence films. The antireflection and antifogging properties were integrated into transparent luminescent films by the layer‐by‐layer assembly of Eu 3+ , Tb 3+ , Dy 3+ doped‐hydroxocation nanosheets and negatively‐charged SiO 2 nanoparticles. Resulting multifunctional films exhibited efficient red, green, and blue emissions with controllable intensity. Highly improved transmittance enabled us to display combinatorial color luminescence, which can be achieved by multiply overlapping individual films with different combinations, without significant loss of transparency. Triple overlap of red/green/blue films generated an excellent white‐light under 254 nm UV irradiation.