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White‐ and blue‐light‐emitting dysprosium(III) and terbium(III)‐doped gadolinium titanate phosphors
Author(s) -
Antić Ž.,
Kuzman S.,
Đorđević V.,
Dramićanin M. D.,
Thundat T.
Publication year - 2017
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3210
Subject(s) - photoluminescence , phosphor , terbium , dysprosium , doping , materials science , gadolinium , blue light , analytical chemistry (journal) , ultraviolet , ultraviolet light , luminescence , optoelectronics , chemistry , inorganic chemistry , chromatography , metallurgy
Here we report the synthesis and structural, morphological, and photoluminescence analysis of white‐ and blue‐light‐emitting Dy 3 + ‐ and Tm 3 + ‐doped Gd 2 Ti 2 O 7 nanophosphors. Single‐phase cubic Gd 2 Ti 2 O 7 nanopowders consist of compact, dense aggregates of nanoparticles with an average size of ~25 nm for Dy 3 + ‐doped and ~50 nm for Tm 3 + ‐doped samples. The photoluminescence results indicated that ultraviolet (UV) light excitation of the Dy 3 + ‐doped sample resulted in direct generation of white light, while a dominant yellow emission was obtained under blue‐light excitation. Intense blue light was obtained for Tm 3 + ‐doped Gd 2 Ti 2 O 7 under UV excitation suggesting that this material could be used as a blue phosphor.