학술논문
Processes of energy migration in mixed europium–lanthanum magnesium borate nanocrystals.
Document Type
Article
Author
Source
Subject
*EUROPIUM
*LANTHANUM
*MAGNESIUM
*BORATES
*NANOCRYSTALS
*NEODYMIUM
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*
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Language
ISSN
0038-7010
Abstract
Processes of excitation energy migration in europium magnesium borate nanocrystals at different concentrations of neodymium and lanthanum ions were investigated by steady-state and time-resolved luminescence spectroscopy. Energy migration in neodymium doped mixed europium–lanthanum magnesium borate nanocrystals is well fitted by ∼t0.33dependence indicating one-dimensional transport to neodymium energy acceptors through europium chains. Variation of neodymium and lanthanum concentrations have shown that at room temperature excitation can migrate over the distances up to 100 nm that is comparable with the size of nanocrystal. [ABSTRACT FROM PUBLISHER]