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Photoluminescence Enhancement of (La 0.95 Eu 0.05 ) 2 Ti 2 O 7 Nanophosphors via Li + Doping
Author(s) -
Yang H. H.,
Cheng H.,
Tang Y. G.,
Lu Z. G.
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.02939.x
Subject(s) - photoluminescence , doping , analytical chemistry (journal) , materials science , ion , citric acid , luminescence , emission intensity , europium , nuclear chemistry , mineralogy , chemistry , optoelectronics , organic chemistry , chromatography
Li + ions have been successfully doped into the La sites of (La 0.95 Eu 0.05 ) 2 Ti 2 O 7 nanocrystals through a facile citric acid sol–gel method. The doping concentration of Li + ions can be as high as 15 mol%. Photoluminescence (PL) performances of the obtained samples have been investigated. The results showed that a doping with small number of Li + ions improves the PL intensity of the synthesized La 2 Ti 2 O 7 :Eu 3+ nanophosphors. The highest emission intensity was observed using the formula of (La 0.92 Eu 0.05 Li 0.03 ) 2 Ti 2 O 7 , whose brightness was increased by almost 20% in comparison with that of (La 0.95 Eu 0.05 ) 2 Ti 2 O 7 .