Hexametavanadates M (4) (+) M2+(VO3)(6): Thermal stability and luminescent characteristics / Slobodin B. V.,Surat L. L.,Shulgin B. V.,Cherepanov A. N.,Ishchenko A. V.,Samigullina R. F.,Neshov F. G. // RUSSIAN JOURNAL OF INORGANIC CHEMISTRY. - 2009. - V. 54, l. 10. - P. 1543-1550.

ISSN/EISSN:

0036-0236 / нет данных

Type:

Article

Abstract:

Rhombohedral hexametavanadates K4Sr(VO3)(6), K4Ba(VO3)(6), Rb-4 Ba(VO3)(6), and Cs4Ba(VO3)(6) melt incongruently in the temperature range of 491 to 600A degrees C. Cooling of peritectic melts yields mixtures of compounds typical of M (2) (+) O-M2+O-V2O5 systems, far from equilibrium and depending on the cooling kinetics. The vanadate Cs4Ba(VO3)(6) undergoes reversible polymorphic transformation at 360A degrees C. All compounds show broad-band luminescence with a maximum of the luminescence spectrum at 490-590 nm with three types of excitation. The vanadates K4Sr(VO3)(6) and Rb4Ba(VO3)(6) show the highest luminescence intensity at room temperature. The latter is also most efficient at liquid nitrogen temperatures. The luminescence spectra depend on the excitation of vanadates. Three hypotheses were put forward to interpret this finding. The nature of luminescence is attributed to the relaxation of electronic excitation in {[}VO4](3-) structural tetrahedra present in the vanadates. The performance characteristics of luminophores were determined. These luminophores may be promising as X-ray luminescent screens, radioluminescence indicators, and light-emitting diode devices.

Author keywords:

нет данных

DOI:

10.1134/S0036023609100076

Web of Science ID:

ISI:000270744000007

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear
ResearcherID-Numbers	Ishchenko, Aleksey/E-1017-2014
ORCID-Numbers	Ishchenko, Aleksey/0000-0002-9883-6652
Number-of-Cited-References	11
Usage-Count-Since-2013	2
Journal-ISO	Russ. J. Inorg. Chem.
Doc-Delivery-Number	506AH