Synthesis and luminescent properties of Sr2Gd6.8Eu1.2Si6(1-x)P6xO26 oxyapatites / Ishchenko A. V.,Zuev M. G.,Vasin A. A.,Yagodin V. V.,Viktorov L. V.,Shulgin B. V. // JOURNAL OF LUMINESCENCE. - 2016. - V. 169, l. A. - P. 137-142.

ISSN/EISSN:

0022-2313 / 1872-7883

Type:

Article

Abstract:

The solid solutions Sr2Gd6.8Eu1.2Si6(1-x)P6xO26-delta (where x=0-0.15 and delta is oxygen nonstoichiometry) were synthesized. The structural properties of the crystal lattice of the solid solutions and the peculiarities of Eu3+ and P5+ dopants substitution for matrix ions have been considered. The photo-, X-ray and pulsed cathode luminescence properties have been studied. It has been found that substitution of (SiO4)(4-) by (PO4)(3-) tetrahedron in Eu3+-doped oxyapatites does not bring significant changes to bands structure Eu3+ in luminescence spectra under different excitation (UV, X-ray, pulse cathode beam). However, the increase of P5+ concentration in Sr2Gd6.8Eu1.2Si6(1-x)P6xO26-delta compounds leads to a decrease of integral intensity of Eu3+ luminescence bands due to local environment symmetry modifications and covalency degree changes. Two nonequivalent optical Eu3+ centers have been found. These compounds are of interest for efficient X-ray phosphors, display devices and LED engineering material creation. (C) 2015 Elsevier B.V. All rights reserved.

Author keywords:

Apatite-type structure; Strontium phosphatosilicates; X-ray diffraction; Luminescence; Charge transfer band; f-f transitions LASER SPECTROSCOPY; EU3+ LUMINESCENCE; PHOSPHOR; CRYSTAL

DOI:

10.1016/j.jlumin.2015.09.003

Web of Science ID:

ISI:000365604700021

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1872-7883
Keywords-Plus	LASER SPECTROSCOPY; EU3+ LUMINESCENCE; PHOSPHOR; CRYSTAL
Research-Areas	Optics
Web-of-Science-Categories	Optics
Author-Email	a-v-i@mail.ru
ResearcherID-Numbers	Ishchenko, Aleksey/E-1017-2014
ORCID-Numbers	Ishchenko, Aleksey/0000-0002-9883-6652
Funding-Acknowledgement	UrFU under the Framework Program of development of UrFU through the Young scientists UrFU competition {[}12-M-23-2007]; {[}SP-3142.2015.1]
Funding-Text	The work was supported by the interdisciplinary project No. 12-M-23-2007, UrFU under the Framework Program of development of UrFU through the Young scientists UrFU competition and grant of President of Russia (SP-3142.2015.1). The authors are thankful to Dr. A.S. Tyutyunnik for help in the analysis of the diffraction patterns of the samples.
Number-of-Cited-References	30
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	12
Journal-ISO	J. Lumines.
Doc-Delivery-Number	CX3NC