A luminescence spectroscopy study of SrI2:Nd3+ single crystals / Ogorodnikov I. N.,Pustovarov V. A.,Goloshumova A. A.,Isaenko L. I.,Yelisseyev A. P.,Pashkov V. M. // JOURNAL OF LUMINESCENCE. - 2013. - V. 143, l. . - P. 101-107.

ISSN/EISSN:

0022-2313 / нет данных

Type:

Article

Abstract:

The paper presents the results of a study on the luminescence of SrI2:Nd3+ single crystals grown by the vertical Bridgman method. The photoluminescence (PL) spectra of SrI2:Nd crystals show characteristic lines corresponding to transitions in trivalent Nd3+ ions, the most intense line at ca. 1070 nm is due to the radiative F-4(3/2)-->I-4(11/2) transitions. Efficient PL excitation in a crystal transparency band occurs due to optical 4f-4f transitions from the ground I-4(9/2) state, or the charge transfer transitions I--->Nd3+. The paper discussed two new PL emission bands at 2.8 and 3.8 eV, associated with the lattice defects formed in SrI2 crystal at introducing Nd3+ impurity ions; two intense narrow PL excitation bands at 5.52 and 5.31 eV, originating from free and defect-bound excitons, respectively; an efficient channel of exciton energy transfer between the host lattice and defects. We calculated the H(k) functions of distribution of the elementary relaxations over the reaction rate constants and explained on this basis the nonexponential PL decay kinetics in SrI2:Nd3+ crystal. (C) 2013 Elsevier B.V. All rights reserved.

Author keywords:

Time-resolved luminescence spectroscopy; Strontium iodide SrI2; Trivalent Nd3+ ion; Exciton energy transfer; PL decay kinetics SELF-TRAPPED EXCITONS; ELECTRONIC EXCITATIONS; IMPURITY; LABR3; IONS; SCINTILLATOR; YAG

DOI:

10.1016/j.jlumin.2013.04.007

Web of Science ID:

ISI:000323912400019

Соавторы в МНС:

Другие поля

Поле	Значение
Month	NOV
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	SELF-TRAPPED EXCITONS; ELECTRONIC EXCITATIONS; IMPURITY; LABR3; IONS; SCINTILLATOR; YAG
Research-Areas	Optics
Web-of-Science-Categories	Optics
Author-Email	i.n.ogorodnikov@gmail.com
ResearcherID-Numbers	Pashkov, Viktor/A-5311-2014 Goloshumova, Alina/A-5356-2014 Ogorodnikov, Igor/B-4162-2011 Isaenko, Ludmila/A-5272-2014 Isaenko, Ludmila/H-7620-2013 Yelisseyev, Alexander/A-3846-2014
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Funding-Acknowledgement	Siberian Branch of the Russian Academy of Sciences {[}28]; HASYLAB DESY {[}20110843]
Funding-Text	This work was supported by the Siberian Branch of the Russian Academy of Sciences (Grant no. 28) and partially supported by HASYLAB DESY (Project no. 20110843).
Number-of-Cited-References	40
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	34
Journal-ISO	J. Lumines.
Doc-Delivery-Number	211MN