NDLI: Luminescence of Li 6 Gd ( BO 3 ) 3 crystals upon ultraviolet and inner-shell excitations

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Luminescence of Li 6 Gd ( BO 3 ) 3 crystals upon ultraviolet and inner-shell excitations

Content Provider	Semantic Scholar
Author	Ogorodnikov, Igor N.
Abstract	The paper presents the results of the study on luminescence and electronic excitations in Li6Gd(BO3)3 single crystals. The optical and luminescence spectroscopy with a sub-nanosecond time resolution upon selective photoexcitation in the energy range from 3.0 to 650 eV was used to investigate in detail the luminescence of both the Gd3þ host ions and Ce3þ impurity ions as well as the processes of energy transfer between them. The intrinsic ultraviolet emission at 3.95–3.97 eV due to Pj8S7=2 transitions in the Gd3þ host ion and the fast luminescence at 2.8–3.0 eV due to 5d-4f dipole-allowed transitions in the Ce3þ impurity ion were studied upon excitations through the intracenter, charge transfer, bandto-band, and inner-shell transitions. The specificity of the energy transfer upon excitation of photoluminescence in the energy range of absorption of the inner shells of different atoms of the crystal, as well as in the energy region of the giant resonance of 4d–4f transitions was revealed. On the basis of the experimental data, the bandgap Eg1⁄49.3 eV, the minimum energy of the 5d-4f and charge transfer transitions were determined. The expected positions of the ground states of the 4f and 4f 5d levels of trivalent lanthanide ions as well as the 4fnþ1 and 4f5d levels of divalent ions were calculated for all the lanthanide ions in Li6Gd(BO3)3 host crystal. & 2012 Elsevier B.V. All rights reserved.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://elar.urfu.ru/bitstream/10995/27208/1/scopus-2013-0378.pdf
Language	English
Access Restriction	Open
Subject Keyword	Anion Exchange Protein 1, Erythrocyte Boron Bronchiolitis Obliterans Cerium Crystal Space Crystal oscillator Electrons Energy Transfer Energy, Physics Excitation Exhibits as Topic Extended Validation Certificate Femtometer GD-ROM Gadolinium Ions Kinetics Internet Protocol Lanthanoid Series Elements Lithium Oxygen Photoelectrochemical process Photoluminescence Photons Resonance Sensitivity and specificity Software bug luminescence nanosecond
Content Type	Text
Resource Type	Article

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