On the mechanisms of non-radiative energy transfer between lanthanide ions: centrosymmetric systems
authors Neto, ANC; Moura, RT; Malta, OL
nationality International
journal JOURNAL OF LUMINESCENCE
author keywords Energy transfer; Lanthanide intensity parameters; Center of inversion; Theoretical approach
keywords ORDER REGULAR APPROXIMATION; UN TUNGSTATE MIXTE; INTENSITY PARAMETERS; SPECTROSCOPIC PROPERTIES; OPTICAL-ABSORPTION; VISIBLE CONVERSION; 4F-4F TRANSITIONS; QUANTUM-DOT; LUMINESCENCE; FLUORESCENCE
abstract In this work the aim is three-fold: 1) to call attention for shielding effects in the energy transfer rates between lanthanide ions. 2) to use a new model for treating the Judd-Ofelt Omega(K) intensity parameters in centrosymmetric systems by using a thermal root mean squared displacement around each ligating atom (ion) in the analysis of the intensity parameters. This might have an important role in ion-ion energy transfer processes, particularly when the lanthanide ions occupy a center of inversion. 3) To call attention to the fact that the quadrupole-quadrupole mechanism is dominant for ion-ion distances as far as 20 angstrom, provided shielding effects are taken into account. An illustrating comparison with respect to the weak quadrupole mechanism of 4f-4f transition rates is made.
publisher ELSEVIER SCIENCE BV
issn 0022-2313
isbn 1872-7883
year published 2019
volume 210
beginning page 342
ending page 347
digital object identifier (doi) 10.1016/j.jlumin.2019.02.049
web of science category Optics
subject category Optics
unique article identifier WOS:000462774900042
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 3.28
5 year journal impact factor 2.824
category normalized journal impact factor percentile 78.866
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