Luminescence of Li6Gd(BO3)(3) crystals upon ultraviolet and inner-shell excitations / Ogorodnikov I. N.,Pustovarov V. A. // JOURNAL OF LUMINESCENCE. - 2013. - V. 134, l. . - P. 113-125.

ISSN/EISSN:

0022-2313 / 1872-7883

Type:

Article

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 Gd3+ host ions and Ce3+ impurity ions as well as the processes of energy transfer between them. The intrinsic ultraviolet emission at 3.95-3.97 eV due to P-6(j) -> S-8(7/2) transitions in the Gd3+ host ion and the fast luminescence at 2.8-3.0 eV due to 5d -> 4f(1) dipole-allowed transitions in the Ce3+ impurity ion were studied upon excitations through the intracenter, charge transfer, band-to-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 E-g=9.3 eV, the minimum energy of the 5d -> 4f(1) and charge transfer transitions were determined. The expected positions of the ground states of the 4f(n) and 4f(n-1).5d levels of trivalent lanthanide ions as well as the 4f(n+1) and 4(fn)5d levels of divalent ions were calculated for all the lanthanide ions in Li6Gd(BO3)(3) host crystal. (c) 2012 Elsevier B.V. All rights reserved.

Author keywords:

Optical crystal; Lithium-gadolinium orthoborate; Li6Gd(BO3)(3); Lanthanide ions; Absolute energy locations; Luminescence spectra RARE-EARTH IONS; SINGLE-CRYSTALS; ELECTRONIC-STRUCTURE; PHOTOLUMINESCENCE PROPERTIES; VUV SPECTROSCOPY; ENERGY-TRANSFER; PHOSPHORS; ABSORPTION; RADIATION; LOCATION

DOI:

10.1016/j.jlumin.2012.09.002

Web of Science ID:

ISI:000313393300020

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1872-7883
Keywords-Plus	RARE-EARTH IONS; SINGLE-CRYSTALS; ELECTRONIC-STRUCTURE; PHOTOLUMINESCENCE PROPERTIES; VUV SPECTROSCOPY; ENERGY-TRANSFER; PHOSPHORS; ABSORPTION; RADIATION; LOCATION
Research-Areas	Optics
Web-of-Science-Categories	Optics
Author-Email	i.n.ogorodnikov@gmail.com
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Funding-Acknowledgement	HASYLAB DESY {[}II-20080019, II-20080199EC]
Funding-Text	The authors are grateful to A.V. Tolmachev and R.P. Yavetskiy for providing the grown crystals for investigation. Many thanks to M. Kirm for his help in conducting the measurements at BW3 beamline. The work was supported partially by HASYLAB DESY, Project No. II-20080019 (SUPERLUMI station, beamline I) and Project No. II-20080199EC (beamline BW3).
Number-of-Cited-References	57
Usage-Count-Since-2013	13
Journal-ISO	J. Lumines.
Doc-Delivery-Number	068VC