Theoretical and Experimental Investigation of the Tb3+ -> Eu3+ Energy Transfer Mechanisms in Cubic A(3)Tb(0.90)Eu(0.10)(PO4)(3 )(A = Sr, Ba) Materials
authors Neto, ANC; Jr, RTM; Shyichuk, A; Paterlini, V; Piccinelli, F; Bettinelli, M; Malta, OL
nationality International
journal JOURNAL OF PHYSICAL CHEMISTRY C
keywords ORDER REGULAR APPROXIMATION; LANTHANIDE IONS; CHEMICAL-BOND; SPECTROSCOPIC PROPERTIES; INTENSITY PARAMETERS; TB3+-DOPED KPB2BR5; TRANSFER RATES; UP-CONVERSION; STATE ENERGY; LUMINESCENCE
abstract In this study the optical spectroscopy, the excited state dynamics, and in particular the Tb3+ -> Eu3+ energy transfer, have been investigated in detail both from the theoretical and experimental point of view in eulytite double phosphate hosts A(3)Tb(PO4)(3) (A = Sr, Ba) doped with Eu3+. It has been found that the energy transfer is strongly assisted by fast migration in the donor Tb3+ subset. Moreover, the transfer rates and efficiencies depend significantly on the nature of the divalent elements present in the structure and hence on the distances between Tb3+-Eu3+ nearest neighbors. It is shown that the competition between quadrupole-quadrupole and exchange interaction is crucial in accounting for the transfer rates.
publisher AMER CHEMICAL SOC
issn 1932-7447
isbn 1932-7455
year published 2020
volume 124
issue 18
beginning page 10105
ending page 10116
digital object identifier (doi) 10.1021/acs.jpcc.0c00759
web of science category Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000535175400048


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